Hyper fast Audio and Video encoder
usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfile}...

Getting help:
    -h      -- print basic options
    -h long -- print more options
    -h full -- print all options (including all format and codec specific options, very long)
    See man ffmpeg for detailed description of the options.

Print help / information / capabilities:
-L                  show license
-h topic            show help
-? topic            show help
-help topic         show help
--help topic        show help
-version            show version
-formats            show available formats
-codecs             show available codecs
-decoders           show available decoders
-encoders           show available encoders
-bsfs               show available bit stream filters
-protocols          show available protocols
-filters            show available filters
-pix_fmts           show available pixel formats
-layouts            show standard channel layouts
-sample_fmts        show available audio sample formats

Global options (affect whole program instead of just one file:
-loglevel loglevel  set libav* logging level
-v loglevel         set libav* logging level
-debug flags        set debug flags
-fdebug flags       set debug flags
-report             generate a report
-max_alloc bytes    set maximum size of a single allocated block
-y                  overwrite output files
-n                  do not overwrite output files
-stats              print progress report during encoding
-bits_per_raw_sample number  set the number of bits per raw sample
-croptop size       Removed, use the crop filter instead
-cropbottom size    Removed, use the crop filter instead
-cropleft size      Removed, use the crop filter instead
-cropright size     Removed, use the crop filter instead
-padtop size        Removed, use the pad filter instead
-padbottom size     Removed, use the pad filter instead
-padleft size       Removed, use the pad filter instead
-padright size      Removed, use the pad filter instead
-padcolor color     Removed, use the pad filter instead
-vol volume         change audio volume (256=normal)

Advanced global options:
-cpuflags flags     force specific cpu flags
-benchmark          add timings for benchmarking
-benchmark_all      add timings for each task
-progress url       write program-readable progress information
-stdin              enable or disable interaction on standard input
-timelimit limit    set max runtime in seconds
-dump               dump each input packet
-hex                when dumping packets, also dump the payload
-vsync              video sync method
-async              audio sync method
-adrift_threshold threshold  audio drift threshold
-copyts             copy timestamps
-copytb mode        copy input stream time base when stream copying
-dts_delta_threshold threshold  timestamp discontinuity delta threshold
-dts_error_threshold threshold  timestamp error delta threshold
-xerror error       exit on error
-filter_complex graph_description  create a complex filtergraph
-debug_ts           print timestamp debugging info
-intra              deprecated use -g 1
-vdt n              discard threshold
-sameq              Removed
-same_quant         Removed
-deinterlace        this option is deprecated, use the yadif filter instead
-psnr               calculate PSNR of compressed frames
-vstats             dump video coding statistics to file
-vstats_file file   dump video coding statistics to file
-dc precision       intra_dc_precision
-qphist             show QP histogram
-vc channel         deprecated, use -channel
-tvstd standard     deprecated, use -standard
-isync              this option is deprecated and does nothing
-default            generic catch all option

Per-file main options:
-f fmt              force format
-i filename         input file name
-c codec            codec name
-codec codec        codec name
-pre preset         preset name
-map_metadata outfile[,metadata]:infile[,metadata]  set metadata information of outfile from infile
-t duration         record or transcode "duration" seconds of audio/video
-fs limit_size      set the limit file size in bytes
-ss time_off        set the start time offset
-timestamp time     set the recording timestamp ('now' to set the current time)
-metadata string=string  add metadata
-target type        specify target file type ("vcd", "svcd", "dvd", "dv", "dv50", "pal-vcd", "ntsc-svcd", ...)
-frames number      set the number of frames to record
-filter filter_list  set stream filterchain
-reinit_filter      reinit filtergraph on input parameter changes

Advanced per-file options:
-map [-]input_file_id[:stream_specifier][,sync_file_id[:stream_s  set input stream mapping
-map_channel file.stream.channel[:syncfile.syncstream]  map an audio channel from one stream to another
-map_chapters input_file_index  set chapters mapping
-itsoffset time_off  set the input ts offset
-itsscale scale     set the input ts scale
-dframes number     set the number of data frames to record
-re                 read input at native frame rate
-shortest           finish encoding within shortest input
-copyinkf           copy initial non-keyframes
-copypriorss        copy or discard frames before start time
-tag fourcc/tag     force codec tag/fourcc
-q q                use fixed quality scale (VBR)
-qscale q           use fixed quality scale (VBR)
-profile profile    set profile
-attach filename    add an attachment to the output file
-dump_attachment filename  extract an attachment into a file
-muxdelay seconds   set the maximum demux-decode delay
-muxpreload seconds  set the initial demux-decode delay
-bsf bitstream_filters  A comma-separated list of bitstream filters
-fpre filename      set options from indicated preset file
-dcodec codec       force data codec ('copy' to copy stream)

Video options:
-vframes number     set the number of video frames to record
-r rate             set frame rate (Hz value, fraction or abbreviation)
-s size             set frame size (WxH or abbreviation)
-aspect aspect      set aspect ratio (4:3, 16:9 or 1.3333, 1.7777)
-bits_per_raw_sample number  set the number of bits per raw sample
-croptop size       Removed, use the crop filter instead
-cropbottom size    Removed, use the crop filter instead
-cropleft size      Removed, use the crop filter instead
-cropright size     Removed, use the crop filter instead
-padtop size        Removed, use the pad filter instead
-padbottom size     Removed, use the pad filter instead
-padleft size       Removed, use the pad filter instead
-padright size      Removed, use the pad filter instead
-padcolor color     Removed, use the pad filter instead
-vn                 disable video
-vcodec codec       force video codec ('copy' to copy stream)
-timecode hh:mm:ss[:;.]ff  set initial TimeCode value.
-pass n             select the pass number (1 to 3)
-vf filter list     video filters
-b bitrate          video bitrate (please use -b:v)
-dn                 disable data

Advanced Video options:
-pix_fmt format     set pixel format
-intra              deprecated use -g 1
-vdt n              discard threshold
-rc_override override  rate control override for specific intervals
-sameq              Removed
-same_quant         Removed
-passlogfile prefix  select two pass log file name prefix
-deinterlace        this option is deprecated, use the yadif filter instead
-psnr               calculate PSNR of compressed frames
-vstats             dump video coding statistics to file
-vstats_file file   dump video coding statistics to file
-intra_matrix matrix  specify intra matrix coeffs
-inter_matrix matrix  specify inter matrix coeffs
-top                top=1/bottom=0/auto=-1 field first
-dc precision       intra_dc_precision
-vtag fourcc/tag    force video tag/fourcc
-qphist             show QP histogram
-force_fps          force the selected framerate, disable the best supported framerate selection
-streamid streamIndex:value  set the value of an outfile streamid
-force_key_frames timestamps  force key frames at specified timestamps
-vc channel         deprecated, use -channel
-tvstd standard     deprecated, use -standard
-vbsf video bitstream_filters  deprecated
-vpre preset        set the video options to the indicated preset

Audio options:
-aframes number     set the number of audio frames to record
-aq quality         set audio quality (codec-specific)
-ar rate            set audio sampling rate (in Hz)
-ac channels        set number of audio channels
-an                 disable audio
-acodec codec       force audio codec ('copy' to copy stream)
-vol volume         change audio volume (256=normal)
-af filter list     audio filters

Advanced Audio options:
-atag fourcc/tag    force audio tag/fourcc
-sample_fmt format  set sample format
-channel_layout layout  set channel layout
-absf audio bitstream_filters  deprecated
-apre preset        set the audio options to the indicated preset

Subtitle options:
-s size             set frame size (WxH or abbreviation)
-sn                 disable subtitle
-scodec codec       force subtitle codec ('copy' to copy stream)
-stag fourcc/tag    force subtitle tag/fourcc
-fix_sub_duration   fix subtitles duration
-spre preset        set the subtitle options to the indicated preset


AVCodecContext AVOptions:
-b                 <int>   E..VA. set bitrate (in bits/s)
-ab                <int>   E...A. set bitrate (in bits/s)
-bt                <int>   E..V.. Set video bitrate tolerance (in bits/s). In 1-pass mode, bitrate tolerance specifies how far ratecontrol is willing to deviate from the target average bitrate value. This is not related to min/max bitrate. Lowering tolerance too much has an adverse effect on quality.
-flags             <flags> ED.VAS
   mv4                     E..V.. use four motion vector by macroblock (mpeg4)
   qpel                    E..V.. use 1/4 pel motion compensation
   loop                    E..V.. use loop filter
   gmc                     E..V.. use gmc
   mv0                     E..V.. always try a mb with mv=<0,0>
   gray                    ED.V.. only decode/encode grayscale
   psnr                    E..V.. error[?] variables will be set during encoding
   naq                     E..V.. normalize adaptive quantization
   ildct                   E..V.. use interlaced dct
   low_delay               ED.V.. force low delay
   global_header           E..VA. place global headers in extradata instead of every keyframe
   bitexact                ED.VAS use only bitexact stuff (except (i)dct)
   aic                     E..V.. h263 advanced intra coding / mpeg4 ac prediction
   cbp                     E..V.. Deprecated, use mpegvideo private options instead
   qprd                    E..V.. Deprecated, use mpegvideo private options instead
   ilme                    E..V.. interlaced motion estimation
   cgop                    E..V.. closed gop
-me_method         <int>   E..V.. set motion estimation method
   zero                    E..V.. zero motion estimation (fastest)
   full                    E..V.. full motion estimation (slowest)
   epzs                    E..V.. EPZS motion estimation (default)
   esa                     E..V.. esa motion estimation (alias for full)
   tesa                    E..V.. tesa motion estimation
   dia                     E..V.. dia motion estimation (alias for epzs)
   log                     E..V.. log motion estimation
   phods                   E..V.. phods motion estimation
   x1                      E..V.. X1 motion estimation
   hex                     E..V.. hex motion estimation
   umh                     E..V.. umh motion estimation
   iter                    E..V.. iter motion estimation
-g                 <int>   E..V.. set the group of picture size
-ar                <int>   ED..A. set audio sampling rate (in Hz)
-ac                <int>   ED..A. set number of audio channels
-cutoff            <int>   E...A. set cutoff bandwidth
-frame_size        <int>   E...A.
-qcomp             <float> E..V.. video quantizer scale compression (VBR). Constant of ratecontrol equation. Recommended range for default rc_eq: 0.0-1.0
-qblur             <float> E..V.. video quantizer scale blur (VBR)
-qmin              <int>   E..V.. min video quantizer scale (VBR)
-qmax              <int>   E..V.. max video quantizer scale (VBR)
-qdiff             <int>   E..V.. max difference between the quantizer scale (VBR)
-bf                <int>   E..V.. use 'frames' B frames
-b_qfactor         <float> E..V.. qp factor between p and b frames
-rc_strategy       <int>   E..V.. ratecontrol method
-b_strategy        <int>   E..V.. strategy to choose between I/P/B-frames
-ps                <int>   E..V.. rtp payload size in bytes
-bug               <flags> .D.V.. workaround not auto detected encoder bugs
   autodetect              .D.V..
   old_msmpeg4             .D.V.. some old lavc generated msmpeg4v3 files (no autodetection)
   xvid_ilace              .D.V.. Xvid interlacing bug (autodetected if fourcc==XVIX)
   ump4                    .D.V.. (autodetected if fourcc==UMP4)
   no_padding              .D.V.. padding bug (autodetected)
   amv                     .D.V..
   ac_vlc                  .D.V.. illegal vlc bug (autodetected per fourcc)
   qpel_chroma             .D.V..
   std_qpel                .D.V.. old standard qpel (autodetected per fourcc/version)
   qpel_chroma2            .D.V..
   direct_blocksize         .D.V.. direct-qpel-blocksize bug (autodetected per fourcc/version)
   edge                    .D.V.. edge padding bug (autodetected per fourcc/version)
   hpel_chroma             .D.V..
   dc_clip                 .D.V..
   ms                      .D.V.. workaround various bugs in microsofts broken decoders
   trunc                   .D.V.. trancated frames
-lelim             <int>   E..V.. single coefficient elimination threshold for luminance (negative values also consider dc coefficient)
-celim             <int>   E..V.. single coefficient elimination threshold for chrominance (negative values also consider dc coefficient)
-strict            <int>   ED.VA. how strictly to follow the standards
   very                    ED.V.. strictly conform to a older more strict version of the spec or reference software
   strict                  ED.V.. strictly conform to all the things in the spec no matter what consequences
   normal                  ED.V..
   unofficial              ED.V.. allow unofficial extensions
   experimental            ED.V.. allow non standardized experimental things
-b_qoffset         <float> E..V.. qp offset between P and B frames
-err_detect        <flags> .D.VA. set error detection flags
   crccheck                .D.VA. verify embedded CRCs
   bitstream               .D.VA. detect bitstream specification deviations
   buffer                  .D.VA. detect improper bitstream length
   explode                 .D.VA. abort decoding on minor error detection
   careful                 .D.VA. consider things that violate the spec and have not been seen in the wild as errors
   compliant               .D.VA. consider all spec non compliancies as errors
   aggressive              .D.VA. consider things that a sane encoder should not do as an error
-mpeg_quant        <int>   E..V.. use MPEG quantizers instead of H.263
-qsquish           <float> E..V.. how to keep quantizer between qmin and qmax (0 = clip, 1 = use differentiable function)
-rc_qmod_amp       <float> E..V.. experimental quantizer modulation
-rc_qmod_freq      <int>   E..V.. experimental quantizer modulation
-rc_eq             <string> E..V.. Set rate control equation. When computing the expression, besides the standard functions defined in the section 'Expression Evaluation', the following functions are available: bits2qp(bits), qp2bits(qp). Also the following constants are available: iTex pTex tex mv fCode iCount mcVar var isI isP isB avgQP qComp avgIITex avgPITex avgPPTex avgBPTex avgTex.
-maxrate           <int>   E..VA. Set max bitrate tolerance (in bits/s). Requires bufsize to be set.
-minrate           <int>   E..VA. Set min bitrate tolerance (in bits/s). Most useful in setting up a CBR encode. It is of little use elsewise.
-bufsize           <int>   E..VA. set ratecontrol buffer size (in bits)
-rc_buf_aggressivity <float> E..V.. currently useless
-i_qfactor         <float> E..V.. qp factor between P and I frames
-i_qoffset         <float> E..V.. qp offset between P and I frames
-rc_init_cplx      <float> E..V.. initial complexity for 1-pass encoding
-dct               <int>   E..V.. DCT algorithm
   auto                    E..V.. autoselect a good one (default)
   fastint                 E..V.. fast integer
   int                     E..V.. accurate integer
   mmx                     E..V..
   altivec                 E..V..
   faan                    E..V.. floating point AAN DCT
-lumi_mask         <float> E..V.. compresses bright areas stronger than medium ones
-tcplx_mask        <float> E..V.. temporal complexity masking
-scplx_mask        <float> E..V.. spatial complexity masking
-p_mask            <float> E..V.. inter masking
-dark_mask         <float> E..V.. compresses dark areas stronger than medium ones
-idct              <int>   ED.V.. select IDCT implementation
   auto                    ED.V..
   int                     ED.V..
   simple                  ED.V..
   simplemmx               ED.V..
   libmpeg2mmx             ED.V..
   mmi                     ED.V..
   arm                     ED.V..
   altivec                 ED.V..
   sh4                     ED.V..
   simplearm               ED.V..
   simplearmv5te           ED.V..
   simplearmv6             ED.V..
   simpleneon              ED.V..
   simplealpha             ED.V..
   h264                    ED.V..
   vp3                     ED.V..
   ipp                     ED.V..
   xvidmmx                 ED.V..
   faani                   ED.V.. floating point AAN IDCT
-ec                <flags> .D.V.. set error concealment strategy
   guess_mvs               .D.V.. iterative motion vector (MV) search (slow)
   deblock                 .D.V.. use strong deblock filter for damaged MBs
-pred              <int>   E..V.. prediction method
   left                    E..V..
   plane                   E..V..
   median                  E..V..
-aspect            <rational> E..V.. sample aspect ratio
-debug             <flags> ED.VAS print specific debug info
   pict                    .D.V.. picture info
   rc                      E..V.. rate control
   bitstream               .D.V..
   mb_type                 .D.V.. macroblock (MB) type
   qp                      .D.V.. per-block quantization parameter (QP)
   mv                      .D.V.. motion vector
   dct_coeff               .D.V..
   skip                    .D.V..
   startcode               .D.V..
   pts                     .D.V..
   er                      .D.V.. error recognition
   mmco                    .D.V.. memory management control operations (H.264)
   bugs                    .D.V..
   vis_qp                  .D.V.. visualize quantization parameter (QP), lower QP are tinted greener
   vis_mb_type             .D.V.. visualize block types
   buffers                 .D.V.. picture buffer allocations
   thread_ops              .D.V.. threading operations
-vismv             <int>   .D.V.. visualize motion vectors (MVs)
   pf                      .D.V.. forward predicted MVs of P-frames
   bf                      .D.V.. forward predicted MVs of B-frames
   bb                      .D.V.. backward predicted MVs of B-frames
-cmp               <int>   E..V.. full pel me compare function
   sad                     E..V.. sum of absolute differences, fast (default)
   sse                     E..V.. sum of squared errors
   satd                    E..V.. sum of absolute Hadamard transformed differences
   dct                     E..V.. sum of absolute DCT transformed differences
   psnr                    E..V.. sum of squared quantization errors (avoid, low quality)
   bit                     E..V.. number of bits needed for the block
   rd                      E..V.. rate distortion optimal, slow
   zero                    E..V.. 0
   vsad                    E..V.. sum of absolute vertical differences
   vsse                    E..V.. sum of squared vertical differences
   nsse                    E..V.. noise preserving sum of squared differences
   w53                     E..V.. 5/3 wavelet, only used in snow
   w97                     E..V.. 9/7 wavelet, only used in snow
   dctmax                  E..V..
   chroma                  E..V..
-subcmp            <int>   E..V.. sub pel me compare function
   sad                     E..V.. sum of absolute differences, fast (default)
   sse                     E..V.. sum of squared errors
   satd                    E..V.. sum of absolute Hadamard transformed differences
   dct                     E..V.. sum of absolute DCT transformed differences
   psnr                    E..V.. sum of squared quantization errors (avoid, low quality)
   bit                     E..V.. number of bits needed for the block
   rd                      E..V.. rate distortion optimal, slow
   zero                    E..V.. 0
   vsad                    E..V.. sum of absolute vertical differences
   vsse                    E..V.. sum of squared vertical differences
   nsse                    E..V.. noise preserving sum of squared differences
   w53                     E..V.. 5/3 wavelet, only used in snow
   w97                     E..V.. 9/7 wavelet, only used in snow
   dctmax                  E..V..
   chroma                  E..V..
-mbcmp             <int>   E..V.. macroblock compare function
   sad                     E..V.. sum of absolute differences, fast (default)
   sse                     E..V.. sum of squared errors
   satd                    E..V.. sum of absolute Hadamard transformed differences
   dct                     E..V.. sum of absolute DCT transformed differences
   psnr                    E..V.. sum of squared quantization errors (avoid, low quality)
   bit                     E..V.. number of bits needed for the block
   rd                      E..V.. rate distortion optimal, slow
   zero                    E..V.. 0
   vsad                    E..V.. sum of absolute vertical differences
   vsse                    E..V.. sum of squared vertical differences
   nsse                    E..V.. noise preserving sum of squared differences
   w53                     E..V.. 5/3 wavelet, only used in snow
   w97                     E..V.. 9/7 wavelet, only used in snow
   dctmax                  E..V..
   chroma                  E..V..
-ildctcmp          <int>   E..V.. interlaced dct compare function
   sad                     E..V.. sum of absolute differences, fast (default)
   sse                     E..V.. sum of squared errors
   satd                    E..V.. sum of absolute Hadamard transformed differences
   dct                     E..V.. sum of absolute DCT transformed differences
   psnr                    E..V.. sum of squared quantization errors (avoid, low quality)
   bit                     E..V.. number of bits needed for the block
   rd                      E..V.. rate distortion optimal, slow
   zero                    E..V.. 0
   vsad                    E..V.. sum of absolute vertical differences
   vsse                    E..V.. sum of squared vertical differences
   nsse                    E..V.. noise preserving sum of squared differences
   w53                     E..V.. 5/3 wavelet, only used in snow
   w97                     E..V.. 9/7 wavelet, only used in snow
   dctmax                  E..V..
   chroma                  E..V..
-dia_size          <int>   E..V.. diamond type & size for motion estimation
-last_pred         <int>   E..V.. amount of motion predictors from the previous frame
-preme             <int>   E..V.. pre motion estimation
-precmp            <int>   E..V.. pre motion estimation compare function
   sad                     E..V.. sum of absolute differences, fast (default)
   sse                     E..V.. sum of squared errors
   satd                    E..V.. sum of absolute Hadamard transformed differences
   dct                     E..V.. sum of absolute DCT transformed differences
   psnr                    E..V.. sum of squared quantization errors (avoid, low quality)
   bit                     E..V.. number of bits needed for the block
   rd                      E..V.. rate distortion optimal, slow
   zero                    E..V.. 0
   vsad                    E..V.. sum of absolute vertical differences
   vsse                    E..V.. sum of squared vertical differences
   nsse                    E..V.. noise preserving sum of squared differences
   w53                     E..V.. 5/3 wavelet, only used in snow
   w97                     E..V.. 9/7 wavelet, only used in snow
   dctmax                  E..V..
   chroma                  E..V..
-pre_dia_size      <int>   E..V.. diamond type & size for motion estimation pre-pass
-subq              <int>   E..V.. sub pel motion estimation quality
-me_range          <int>   E..V.. limit motion vectors range (1023 for DivX player)
-ibias             <int>   E..V.. intra quant bias
-pbias             <int>   E..V.. inter quant bias
-global_quality    <int>   E..VA.
-coder             <int>   E..V..
   vlc                     E..V.. variable length coder / huffman coder
   ac                      E..V.. arithmetic coder
   raw                     E..V.. raw (no encoding)
   rle                     E..V.. run-length coder
   deflate                 E..V.. deflate-based coder
-context           <int>   E..V.. context model
-mbd               <int>   E..V.. macroblock decision algorithm (high quality mode)
   simple                  E..V.. use mbcmp (default)
   bits                    E..V.. use fewest bits
   rd                      E..V.. use best rate distortion
-sc_threshold      <int>   E..V.. scene change threshold
-lmin              <int>   E..V.. min lagrange factor (VBR)
-lmax              <int>   E..V.. max lagrange factor (VBR)
-nr                <int>   E..V.. noise reduction
-rc_init_occupancy <int>   E..V.. number of bits which should be loaded into the rc buffer before decoding starts
-inter_threshold   <int>   E..V..
-flags2            <flags> ED.VA.
   fast                    E..V.. allow non spec compliant speedup tricks
   sgop                    E..V.. Deprecated, use mpegvideo private options instead
   noout                   E..V.. skip bitstream encoding
   local_header            E..V.. place global headers at every keyframe instead of in extradata
   chunks                  .D.V.. Frame data might be split into multiple chunks
   showall                 .D.V.. Show all frames before the first keyframe
   skiprd                  E..V.. Deprecated, use mpegvideo private options instead
-error             <int>   E..V..
-qns               <int>   E..V.. deprecated, use mpegvideo private options instead
-threads           <int>   ED.V..
   auto                    ED.V.. detect a good number of threads
-me_threshold      <int>   E..V.. motion estimaton threshold
-mb_threshold      <int>   E..V.. macroblock threshold
-dc                <int>   E..V.. intra_dc_precision
-nssew             <int>   E..V.. nsse weight
-skip_top          <int>   .D.V.. number of macroblock rows at the top which are skipped
-skip_bottom       <int>   .D.V.. number of macroblock rows at the bottom which are skipped
-profile           <int>   E..VA.
   unknown                 E..VA.
   aac_main                E...A.
   aac_low                 E...A.
   aac_ssr                 E...A.
   aac_ltp                 E...A.
   aac_he                  E...A.
   aac_he_v2               E...A.
   aac_ld                  E...A.
   aac_eld                 E...A.
   dts                     E...A.
   dts_es                  E...A.
   dts_96_24               E...A.
   dts_hd_hra              E...A.
   dts_hd_ma               E...A.
-level             <int>   E..VA.
   unknown                 E..VA.
-lowres            <int>   .D.VA. decode at 1= 1/2, 2=1/4, 3=1/8 resolutions
-skip_threshold    <int>   E..V.. frame skip threshold
-skip_factor       <int>   E..V.. frame skip factor
-skip_exp          <int>   E..V.. frame skip exponent
-skipcmp           <int>   E..V.. frame skip compare function
   sad                     E..V.. sum of absolute differences, fast (default)
   sse                     E..V.. sum of squared errors
   satd                    E..V.. sum of absolute Hadamard transformed differences
   dct                     E..V.. sum of absolute DCT transformed differences
   psnr                    E..V.. sum of squared quantization errors (avoid, low quality)
   bit                     E..V.. number of bits needed for the block
   rd                      E..V.. rate distortion optimal, slow
   zero                    E..V.. 0
   vsad                    E..V.. sum of absolute vertical differences
   vsse                    E..V.. sum of squared vertical differences
   nsse                    E..V.. noise preserving sum of squared differences
   w53                     E..V.. 5/3 wavelet, only used in snow
   w97                     E..V.. 9/7 wavelet, only used in snow
   dctmax                  E..V..
   chroma                  E..V..
-border_mask       <float> E..V.. increases the quantizer for macroblocks close to borders
-mblmin            <int>   E..V.. min macroblock lagrange factor (VBR)
-mblmax            <int>   E..V.. max macroblock lagrange factor (VBR)
-mepc              <int>   E..V.. motion estimation bitrate penalty compensation (1.0 = 256)
-skip_loop_filter  <int>   .D.V..
   none                    .D.V..
   default                 .D.V..
   noref                   .D.V..
   bidir                   .D.V..
   nokey                   .D.V..
   all                     .D.V..
-skip_idct         <int>   .D.V..
   none                    .D.V..
   default                 .D.V..
   noref                   .D.V..
   bidir                   .D.V..
   nokey                   .D.V..
   all                     .D.V..
-skip_frame        <int>   .D.V..
   none                    .D.V..
   default                 .D.V..
   noref                   .D.V..
   bidir                   .D.V..
   nokey                   .D.V..
   all                     .D.V..
-bidir_refine      <int>   E..V.. refine the two motion vectors used in bidirectional macroblocks
-brd_scale         <int>   E..V.. downscales frames for dynamic B-frame decision
-keyint_min        <int>   E..V.. minimum interval between IDR-frames
-refs              <int>   E..V.. reference frames to consider for motion compensation
-chromaoffset      <int>   E..V.. chroma qp offset from luma
-trellis           <int>   E..VA. rate-distortion optimal quantization
-sc_factor         <int>   E..V.. multiplied by qscale for each frame and added to scene_change_score
-mv0_threshold     <int>   E..V..
-b_sensitivity     <int>   E..V.. adjusts sensitivity of b_frame_strategy 1
-compression_level <int>   E..VA.
-min_prediction_order <int>   E...A.
-max_prediction_order <int>   E...A.
-timecode_frame_start <int64> E..V.. GOP timecode frame start number, in non drop frame format
-request_channels  <int>   .D..A. set desired number of audio channels
-channel_layout    <int64> ED..A.
-request_channel_layout <int64> .D..A.
-rc_max_vbv_use    <float> E..V..
-rc_min_vbv_use    <float> E..V..
-ticks_per_frame   <int>   ED.VA.
-color_primaries   <int>   ED.V..
-color_trc         <int>   ED.V..
-colorspace        <int>   ED.V..
-color_range       <int>   ED.V..
-chroma_sample_location <int>   ED.V..
-slices            <int>   E..V.. number of slices, used in parallelized encoding
-thread_type       <flags> ED.V.. select multithreading type
   slice                   ED.V..
   frame                   ED.V..
-audio_service_type <int>   E...A. audio service type
   ma                      E...A. Main Audio Service
   ef                      E...A. Effects
   vi                      E...A. Visually Impaired
   hi                      E...A. Hearing Impaired
   di                      E...A. Dialogue
   co                      E...A. Commentary
   em                      E...A. Emergency
   vo                      E...A. Voice Over
   ka                      E...A. Karaoke
-request_sample_fmt <sample_fmt> .D..A. sample format audio decoders should prefer

cljr encoder AVOptions:
-dither_type       <int>   E..V.. Dither type

dnxhd AVOptions:
-nitris_compat     <int>   E..V.. encode with Avid Nitris compatibility

ffv1 encoder AVOptions:
-slicecrc          <int>   E..V.. Protect slices with CRCs

flv encoder AVOptions:
-mpv_flags         <flags> E..V.. Flags common for all mpegvideo-based encoders.
   skip_rd                 E..V.. RD optimal MB level residual skipping
   strict_gop              E..V.. Strictly enforce gop size
   qp_rd                   E..V.. Use rate distortion optimization for qp selection
   cbp_rd                  E..V.. use rate distortion optimization for CBP
-luma_elim_threshold <int>   E..V.. single coefficient elimination threshold for luminance (negative values also consider dc coefficient)
-chroma_elim_threshold <int>   E..V.. single coefficient elimination threshold for chrominance (negative values also consider dc coefficient)
-quantizer_noise_shaping <int>   E..V..

h261 encoder AVOptions:
-mpv_flags         <flags> E..V.. Flags common for all mpegvideo-based encoders.
   skip_rd                 E..V.. RD optimal MB level residual skipping
   strict_gop              E..V.. Strictly enforce gop size
   qp_rd                   E..V.. Use rate distortion optimization for qp selection
   cbp_rd                  E..V.. use rate distortion optimization for CBP
-luma_elim_threshold <int>   E..V.. single coefficient elimination threshold for luminance (negative values also consider dc coefficient)
-chroma_elim_threshold <int>   E..V.. single coefficient elimination threshold for chrominance (negative values also consider dc coefficient)
-quantizer_noise_shaping <int>   E..V..

H.263 encoder AVOptions:
-obmc              <int>   E..V.. use overlapped block motion compensation.
-structured_slices <int>   E..V.. Write slice start position at every GOB header instead of just GOB number.
-mb_info           <int>   E..V.. emit macroblock info for RFC 2190 packetization, the parameter value is the maximum payload size
-mpv_flags         <flags> E..V.. Flags common for all mpegvideo-based encoders.
   skip_rd                 E..V.. RD optimal MB level residual skipping
   strict_gop              E..V.. Strictly enforce gop size
   qp_rd                   E..V.. Use rate distortion optimization for qp selection
   cbp_rd                  E..V.. use rate distortion optimization for CBP
-luma_elim_threshold <int>   E..V.. single coefficient elimination threshold for luminance (negative values also consider dc coefficient)
-chroma_elim_threshold <int>   E..V.. single coefficient elimination threshold for chrominance (negative values also consider dc coefficient)
-quantizer_noise_shaping <int>   E..V..

H.263p encoder AVOptions:
-umv               <int>   E..V.. Use unlimited motion vectors.
-aiv               <int>   E..V.. Use alternative inter VLC.
-obmc              <int>   E..V.. use overlapped block motion compensation.
-structured_slices <int>   E..V.. Write slice start position at every GOB header instead of just GOB number.
-mpv_flags         <flags> E..V.. Flags common for all mpegvideo-based encoders.
   skip_rd                 E..V.. RD optimal MB level residual skipping
   strict_gop              E..V.. Strictly enforce gop size
   qp_rd                   E..V.. Use rate distortion optimization for qp selection
   cbp_rd                  E..V.. use rate distortion optimization for CBP
-luma_elim_threshold <int>   E..V.. single coefficient elimination threshold for luminance (negative values also consider dc coefficient)
-chroma_elim_threshold <int>   E..V.. single coefficient elimination threshold for chrominance (negative values also consider dc coefficient)
-quantizer_noise_shaping <int>   E..V..

H264 Decoder AVOptions:

MJPEG decoder AVOptions:
-extern_huff       <int>   .D.V.. Use external huffman table.

mpeg1video encoder AVOptions:
-gop_timecode      <string> E..V.. MPEG GOP Timecode in hh:mm:ss[:;.]ff format
-intra_vlc         <int>   E..V.. Use MPEG-2 intra VLC table.
-drop_frame_timecode <int>   E..V.. Timecode is in drop frame format.
-scan_offset       <int>   E..V.. Reserve space for SVCD scan offset user data.
-mpv_flags         <flags> E..V.. Flags common for all mpegvideo-based encoders.
   skip_rd                 E..V.. RD optimal MB level residual skipping
   strict_gop              E..V.. Strictly enforce gop size
   qp_rd                   E..V.. Use rate distortion optimization for qp selection
   cbp_rd                  E..V.. use rate distortion optimization for CBP
-luma_elim_threshold <int>   E..V.. single coefficient elimination threshold for luminance (negative values also consider dc coefficient)
-chroma_elim_threshold <int>   E..V.. single coefficient elimination threshold for chrominance (negative values also consider dc coefficient)
-quantizer_noise_shaping <int>   E..V..

mpeg2video encoder AVOptions:
-gop_timecode      <string> E..V.. MPEG GOP Timecode in hh:mm:ss[:;.]ff format
-intra_vlc         <int>   E..V.. Use MPEG-2 intra VLC table.
-drop_frame_timecode <int>   E..V.. Timecode is in drop frame format.
-scan_offset       <int>   E..V.. Reserve space for SVCD scan offset user data.
-non_linear_quant  <int>   E..V.. Use nonlinear quantizer.
-alternate_scan    <int>   E..V.. Enable alternate scantable.
-mpv_flags         <flags> E..V.. Flags common for all mpegvideo-based encoders.
   skip_rd                 E..V.. RD optimal MB level residual skipping
   strict_gop              E..V.. Strictly enforce gop size
   qp_rd                   E..V.. Use rate distortion optimization for qp selection
   cbp_rd                  E..V.. use rate distortion optimization for CBP
-luma_elim_threshold <int>   E..V.. single coefficient elimination threshold for luminance (negative values also consider dc coefficient)
-chroma_elim_threshold <int>   E..V.. single coefficient elimination threshold for chrominance (negative values also consider dc coefficient)
-quantizer_noise_shaping <int>   E..V..

MPEG4 encoder AVOptions:
-data_partitioning <int>   E..V.. Use data partitioning.
-alternate_scan    <int>   E..V.. Enable alternate scantable.
-mpv_flags         <flags> E..V.. Flags common for all mpegvideo-based encoders.
   skip_rd                 E..V.. RD optimal MB level residual skipping
   strict_gop              E..V.. Strictly enforce gop size
   qp_rd                   E..V.. Use rate distortion optimization for qp selection
   cbp_rd                  E..V.. use rate distortion optimization for CBP
-luma_elim_threshold <int>   E..V.. single coefficient elimination threshold for luminance (negative values also consider dc coefficient)
-chroma_elim_threshold <int>   E..V.. single coefficient elimination threshold for chrominance (negative values also consider dc coefficient)
-quantizer_noise_shaping <int>   E..V..

MPEG4 Video Decoder AVOptions:

msmpeg4v2 encoder AVOptions:
-mpv_flags         <flags> E..V.. Flags common for all mpegvideo-based encoders.
   skip_rd                 E..V.. RD optimal MB level residual skipping
   strict_gop              E..V.. Strictly enforce gop size
   qp_rd                   E..V.. Use rate distortion optimization for qp selection
   cbp_rd                  E..V.. use rate distortion optimization for CBP
-luma_elim_threshold <int>   E..V.. single coefficient elimination threshold for luminance (negative values also consider dc coefficient)
-chroma_elim_threshold <int>   E..V.. single coefficient elimination threshold for chrominance (negative values also consider dc coefficient)
-quantizer_noise_shaping <int>   E..V..

msmpeg4v3 encoder AVOptions:
-mpv_flags         <flags> E..V.. Flags common for all mpegvideo-based encoders.
   skip_rd                 E..V.. RD optimal MB level residual skipping
   strict_gop              E..V.. Strictly enforce gop size
   qp_rd                   E..V.. Use rate distortion optimization for qp selection
   cbp_rd                  E..V.. use rate distortion optimization for CBP
-luma_elim_threshold <int>   E..V.. single coefficient elimination threshold for luminance (negative values also consider dc coefficient)
-chroma_elim_threshold <int>   E..V.. single coefficient elimination threshold for chrominance (negative values also consider dc coefficient)
-quantizer_noise_shaping <int>   E..V..

ProRes encoder AVOptions:
-mbs_per_slice     <int>   E..V.. macroblocks per slice
-profile           <int>   E..V..
   proxy                   E..V..
   lt                      E..V..
   standard                E..V..
   hq                      E..V..
-vendor            <string> E..V.. vendor ID
-bits_per_mb       <int>   E..V.. desired bits per macroblock
-quant_mat         <int>   E..V.. quantiser matrix
   auto                    E..V..
   proxy                   E..V..
   lt                      E..V..
   standard                E..V..
   hq                      E..V..
   default                 E..V..

rawdec AVOptions:
-top               <int>   .D.V.. top field first

rv10 encoder AVOptions:
-mpv_flags         <flags> E..V.. Flags common for all mpegvideo-based encoders.
   skip_rd                 E..V.. RD optimal MB level residual skipping
   strict_gop              E..V.. Strictly enforce gop size
   qp_rd                   E..V.. Use rate distortion optimization for qp selection
   cbp_rd                  E..V.. use rate distortion optimization for CBP
-luma_elim_threshold <int>   E..V.. single coefficient elimination threshold for luminance (negative values also consider dc coefficient)
-chroma_elim_threshold <int>   E..V.. single coefficient elimination threshold for chrominance (negative values also consider dc coefficient)
-quantizer_noise_shaping <int>   E..V..

rv20 encoder AVOptions:
-mpv_flags         <flags> E..V.. Flags common for all mpegvideo-based encoders.
   skip_rd                 E..V.. RD optimal MB level residual skipping
   strict_gop              E..V.. Strictly enforce gop size
   qp_rd                   E..V.. Use rate distortion optimization for qp selection
   cbp_rd                  E..V.. use rate distortion optimization for CBP
-luma_elim_threshold <int>   E..V.. single coefficient elimination threshold for luminance (negative values also consider dc coefficient)
-chroma_elim_threshold <int>   E..V.. single coefficient elimination threshold for chrominance (negative values also consider dc coefficient)
-quantizer_noise_shaping <int>   E..V..

snow encoder AVOptions:
-memc_only         <int>   E..V.. Only do ME/MC (I frames -> ref, P frame -> ME+MC).
-no_bitstream      <int>   E..V.. Skip final bitstream writeout.

TIFF encoder AVOptions:
-dpi               <int>   E..V.. set the image resolution (in dpi)
-compression_algo  <int>   E..V..
   packbits                E..V..
   raw                     E..V..
   lzw                     E..V..
   deflate                 E..V..

V210 Decoder AVOptions:
-custom_stride     <int>   .D.V.. Custom V210 stride

wmv1 encoder AVOptions:
-mpv_flags         <flags> E..V.. Flags common for all mpegvideo-based encoders.
   skip_rd                 E..V.. RD optimal MB level residual skipping
   strict_gop              E..V.. Strictly enforce gop size
   qp_rd                   E..V.. Use rate distortion optimization for qp selection
   cbp_rd                  E..V.. use rate distortion optimization for CBP
-luma_elim_threshold <int>   E..V.. single coefficient elimination threshold for luminance (negative values also consider dc coefficient)
-chroma_elim_threshold <int>   E..V.. single coefficient elimination threshold for chrominance (negative values also consider dc coefficient)
-quantizer_noise_shaping <int>   E..V..

AAC encoder AVOptions:
-stereo_mode       <int>   E...A. Stereo coding method
   auto                    E...A. Selected by the Encoder
   ms_off                  E...A. Disable Mid/Side coding
   ms_force                E...A. Force Mid/Side for the whole frame if possible
-aac_coder         <int>   E...A. 

AC-3 Encoder AVOptions:
-per_frame_metadata <int>   E...A. Allow Changing Metadata Per-Frame
-center_mixlev     <float> E...A. Center Mix Level
-surround_mixlev   <float> E...A. Surround Mix Level
-mixing_level      <int>   E...A. Mixing Level
-room_type         <int>   E...A. Room Type
   notindicated            E...A. Not Indicated (default)
   large                   E...A. Large Room
   small                   E...A. Small Room
-copyright         <int>   E...A. Copyright Bit
-dialnorm          <int>   E...A. Dialogue Level (dB)
-dsur_mode         <int>   E...A. Dolby Surround Mode
   notindicated            E...A. Not Indicated (default)
   on                      E...A. Dolby Surround Encoded
   off                     E...A. Not Dolby Surround Encoded
-original          <int>   E...A. Original Bit Stream
-dmix_mode         <int>   E...A. Preferred Stereo Downmix Mode
   notindicated            E...A. Not Indicated (default)
   ltrt                    E...A. Lt/Rt Downmix Preferred
   loro                    E...A. Lo/Ro Downmix Preferred
-ltrt_cmixlev      <float> E...A. Lt/Rt Center Mix Level
-ltrt_surmixlev    <float> E...A. Lt/Rt Surround Mix Level
-loro_cmixlev      <float> E...A. Lo/Ro Center Mix Level
-loro_surmixlev    <float> E...A. Lo/Ro Surround Mix Level
-dsurex_mode       <int>   E...A. Dolby Surround EX Mode
   notindicated            E...A. Not Indicated (default)
   on                      E...A. Dolby Surround EX Encoded
   off                     E...A. Not Dolby Surround EX Encoded
-dheadphone_mode   <int>   E...A. Dolby Headphone Mode
   notindicated            E...A. Not Indicated (default)
   on                      E...A. Dolby Headphone Encoded
   off                     E...A. Not Dolby Headphone Encoded
-ad_conv_type      <int>   E...A. A/D Converter Type
   standard                E...A. Standard (default)
   hdcd                    E...A. HDCD
-stereo_rematrixing <int>   E...A. Stereo Rematrixing
-channel_coupling  <int>   E...A. Channel Coupling
   auto                    E...A. Selected by the Encoder
-cpl_start_band    <int>   E...A. Coupling Start Band
   auto                    E...A. Selected by the Encoder

AC3 decoder AVOptions:
-drc_scale         <float> .D..A. percentage of dynamic range compression to apply

Fixed-Point AC-3 Encoder AVOptions:
-per_frame_metadata <int>   E...A. Allow Changing Metadata Per-Frame
-center_mixlev     <float> E...A. Center Mix Level
-surround_mixlev   <float> E...A. Surround Mix Level
-mixing_level      <int>   E...A. Mixing Level
-room_type         <int>   E...A. Room Type
   notindicated            E...A. Not Indicated (default)
   large                   E...A. Large Room
   small                   E...A. Small Room
-copyright         <int>   E...A. Copyright Bit
-dialnorm          <int>   E...A. Dialogue Level (dB)
-dsur_mode         <int>   E...A. Dolby Surround Mode
   notindicated            E...A. Not Indicated (default)
   on                      E...A. Dolby Surround Encoded
   off                     E...A. Not Dolby Surround Encoded
-original          <int>   E...A. Original Bit Stream
-dmix_mode         <int>   E...A. Preferred Stereo Downmix Mode
   notindicated            E...A. Not Indicated (default)
   ltrt                    E...A. Lt/Rt Downmix Preferred
   loro                    E...A. Lo/Ro Downmix Preferred
-ltrt_cmixlev      <float> E...A. Lt/Rt Center Mix Level
-ltrt_surmixlev    <float> E...A. Lt/Rt Surround Mix Level
-loro_cmixlev      <float> E...A. Lo/Ro Center Mix Level
-loro_surmixlev    <float> E...A. Lo/Ro Surround Mix Level
-dsurex_mode       <int>   E...A. Dolby Surround EX Mode
   notindicated            E...A. Not Indicated (default)
   on                      E...A. Dolby Surround EX Encoded
   off                     E...A. Not Dolby Surround EX Encoded
-dheadphone_mode   <int>   E...A. Dolby Headphone Mode
   notindicated            E...A. Not Indicated (default)
   on                      E...A. Dolby Headphone Encoded
   off                     E...A. Not Dolby Headphone Encoded
-ad_conv_type      <int>   E...A. A/D Converter Type
   standard                E...A. Standard (default)
   hdcd                    E...A. HDCD
-stereo_rematrixing <int>   E...A. Stereo Rematrixing
-channel_coupling  <int>   E...A. Channel Coupling
   auto                    E...A. Selected by the Encoder
-cpl_start_band    <int>   E...A. Coupling Start Band
   auto                    E...A. Selected by the Encoder

APE decoder AVOptions:
-max_samples       <int>   .D..A. maximum number of samples decoded per call
   all                     .D..A. no maximum. decode all samples for each packet at once

E-AC-3 Encoder AVOptions:
-per_frame_metadata <int>   E...A. Allow Changing Metadata Per-Frame
-mixing_level      <int>   E...A. Mixing Level
-room_type         <int>   E...A. Room Type
   notindicated            E...A. Not Indicated (default)
   large                   E...A. Large Room
   small                   E...A. Small Room
-copyright         <int>   E...A. Copyright Bit
-dialnorm          <int>   E...A. Dialogue Level (dB)
-dsur_mode         <int>   E...A. Dolby Surround Mode
   notindicated            E...A. Not Indicated (default)
   on                      E...A. Dolby Surround Encoded
   off                     E...A. Not Dolby Surround Encoded
-original          <int>   E...A. Original Bit Stream
-dmix_mode         <int>   E...A. Preferred Stereo Downmix Mode
   notindicated            E...A. Not Indicated (default)
   ltrt                    E...A. Lt/Rt Downmix Preferred
   loro                    E...A. Lo/Ro Downmix Preferred
-ltrt_cmixlev      <float> E...A. Lt/Rt Center Mix Level
-ltrt_surmixlev    <float> E...A. Lt/Rt Surround Mix Level
-loro_cmixlev      <float> E...A. Lo/Ro Center Mix Level
-loro_surmixlev    <float> E...A. Lo/Ro Surround Mix Level
-dsurex_mode       <int>   E...A. Dolby Surround EX Mode
   notindicated            E...A. Not Indicated (default)
   on                      E...A. Dolby Surround EX Encoded
   off                     E...A. Not Dolby Surround EX Encoded
-dheadphone_mode   <int>   E...A. Dolby Headphone Mode
   notindicated            E...A. Not Indicated (default)
   on                      E...A. Dolby Headphone Encoded
   off                     E...A. Not Dolby Headphone Encoded
-ad_conv_type      <int>   E...A. A/D Converter Type
   standard                E...A. Standard (default)
   hdcd                    E...A. HDCD
-stereo_rematrixing <int>   E...A. Stereo Rematrixing
-channel_coupling  <int>   E...A. Channel Coupling
   auto                    E...A. Selected by the Encoder
-cpl_start_band    <int>   E...A. Coupling Start Band
   auto                    E...A. Selected by the Encoder

E-AC3 decoder AVOptions:
-drc_scale         <float> .D..A. percentage of dynamic range compression to apply

FLAC encoder AVOptions:
-lpc_coeff_precision <int>   E...A. LPC coefficient precision
-lpc_type          <int>   E...A. LPC algorithm
   none                    E...A.
   fixed                   E...A.
   levinson                E...A.
   cholesky                E...A.
-lpc_passes        <int>   E...A. Number of passes to use for Cholesky factorization during LPC analysis
-min_partition_order <int>   E...A.
-max_partition_order <int>   E...A.
-prediction_order_method <int>   E...A. Search method for selecting prediction order
   estimation              E...A.
   2level                  E...A.
   4level                  E...A.
   8level                  E...A.
   search                  E...A.
   log                     E...A.
-ch_mode           <int>   E...A. Stereo decorrelation mode
   auto                    E...A.
   indep                   E...A.
   left_side               E...A.
   right_side              E...A.
   mid_side                E...A.

G.723.1 decoder AVOptions:
-postfilter        <int>   .D..A. postfilter on/off

g722 decoder AVOptions:
-bits_per_codeword <flags> .D..A. Bits per G722 codeword

g726 AVOptions:
-code_size         <int>   E...A. Bits per code

PGS subtitle decoder AVOptions:
-forced_subs_only  <int>   .D...S Only show forced subtitles

text decoder AVOptions:
-linebreaks        <string> .D...S Extra line breaks characters
-keep_ass_markup   <int>   .D...S Set if ASS tags must be escaped

libmp3lame encoder AVOptions:
-reservoir         <int>   E...A. Use bit reservoir.

libopencore_amrnb AVOptions:
-dtx               <int>   E...A. Allow DTX (generate comfort noise)

libopenjpeg AVOptions:
-format            <int>   E..V.. Codec Format
   j2k                     E..V..
   jp2                     E..V..
-profile           <int>   E..V..
   jpeg2000                E..V..
   cinema2k                E..V..
   cinema4k                E..V..
-cinema_mode       <int>   E..V.. Digital Cinema
   off                     E..V..
   2k_24                   E..V..
   2k_48                   E..V..
   4k_24                   E..V..
-prog_order        <int>   E..V.. Progression Order
   lrcp                    E..V..
   rlcp                    E..V..
   rpcl                    E..V..
   pcrl                    E..V..
   cprl                    E..V..
-numresolution     <int>   E..V..
-numlayers         <int>   E..V..
-disto_alloc       <int>   E..V..
-fixed_alloc       <int>   E..V..
-fixed_quality     <int>   E..V..

libopenjpeg AVOptions:
-lowqual           <int>   .D.V.. Limit the number of layers used for decoding

libopus AVOptions:
-application       <int>   E...A. Intended application type
   voip                    E...A. Favor improved speech intelligibility
   audio                   E...A. Favor faithfulness to the input
   lowdelay                E...A. Restrict to only the lowest delay modes
-frame_duration    <float> E...A. Duration of a frame in milliseconds
-packet_loss       <int>   E...A. Expected packet loss percentage
-vbr               <int>   E...A. Variable bit rate mode
   off                     E...A. Use constant bit rate
   on                      E...A. Use variable bit rate
   constrained             E...A. Use constrained VBR

libspeex AVOptions:
-abr               <int>   E...A. Use average bit rate
-cbr_quality       <int>   E...A. Set quality value (0 to 10) for CBR
-frames_per_packet <int>   E...A. Number of frames to encode in each packet
-vad               <int>   E...A. Voice Activity Detection
-dtx               <int>   E...A. Discontinuous Transmission

libvo_amrwbenc AVOptions:
-dtx               <int>   E...A. Allow DTX (generate comfort noise)

libvorbis AVOptions:
-iblock            <double> E...A. Sets the impulse block bias

libvpx encoder AVOptions:
-cpu-used          <int>   E..V.. Quality/Speed ratio modifier
-auto-alt-ref      <int>   E..V.. Enable use of alternate reference frames (2-pass only)
-lag-in-frames     <int>   E..V.. Number of frames to look ahead for alternate reference frame selection
-arnr-maxframes    <int>   E..V.. altref noise reduction max frame count
-arnr-strength     <int>   E..V.. altref noise reduction filter strength
-arnr-type         <int>   E..V.. altref noise reduction filter type
   backward                E..V..
   forward                 E..V..
   centered                E..V..
-deadline          <int>   E..V.. Time to spend encoding, in microseconds.
   best                    E..V..
   good                    E..V..
   realtime                E..V..
-error-resilient   <flags> E..V.. Error resilience configuration
   default                 E..V.. Improve resiliency against losses of whole frames
   partitions              E..V.. The frame partitions are independently decodable by the bool decoder, meaning that partitions can be decoded even though earlier partitions have been lost. Note that intra predicition is still done over the partition boundary.
-max-intra-rate    <int>   E..V.. Maximum I-frame bitrate (pct) 0=unlimited
-speed             <int>   E..V.. 
-quality           <int>   E..V.. 
   best                    E..V..
   good                    E..V..
   realtime                E..V..
-vp8flags          <flags> E..V.. 
   error_resilient         E..V.. enable error resilience
   altref                  E..V.. enable use of alternate reference frames (VP8/2-pass only)
-arnr_max_frames   <int>   E..V.. altref noise reduction max frame count
-arnr_strength     <int>   E..V.. altref noise reduction filter strength
-arnr_type         <int>   E..V.. altref noise reduction filter type
-rc_lookahead      <int>   E..V.. Number of frames to look ahead for alternate reference frame selection
-crf               <int>   E..V.. Select the quality for constant quality mode

libx264 AVOptions:
-preset            <string> E..V.. Set the encoding preset (cf. x264 --fullhelp)
-tune              <string> E..V.. Tune the encoding params (cf. x264 --fullhelp)
-profile           <string> E..V.. Set profile restrictions (cf. x264 --fullhelp) 
-fastfirstpass     <int>   E..V.. Use fast settings when encoding first pass
-level             <string> E..V.. Specify level (as defined by Annex A)
-passlogfile       <string> E..V.. Filename for 2 pass stats
-wpredp            <string> E..V.. Weighted prediction for P-frames
-x264opts          <string> E..V.. x264 options
-crf               <float> E..V.. Select the quality for constant quality mode
-crf_max           <float> E..V.. In CRF mode, prevents VBV from lowering quality beyond this point.
-qp                <int>   E..V.. Constant quantization parameter rate control method
-aq-mode           <int>   E..V.. AQ method
   none                    E..V..
   variance                E..V.. Variance AQ (complexity mask)
   autovariance            E..V.. Auto-variance AQ (experimental)
-aq-strength       <float> E..V.. AQ strength. Reduces blocking and blurring in flat and textured areas.
-psy               <int>   E..V.. Use psychovisual optimizations.
-psy-rd            <string> E..V.. Strength of psychovisual optimization, in <psy-rd>:<psy-trellis> format.
-rc-lookahead      <int>   E..V.. Number of frames to look ahead for frametype and ratecontrol
-weightb           <int>   E..V.. Weighted prediction for B-frames.
-weightp           <int>   E..V.. Weighted prediction analysis method.
   none                    E..V..
   simple                  E..V..
   smart                   E..V..
-ssim              <int>   E..V.. Calculate and print SSIM stats.
-intra-refresh     <int>   E..V.. Use Periodic Intra Refresh instead of IDR frames.
-b-bias            <int>   E..V.. Influences how often B-frames are used
-b-pyramid         <int>   E..V.. Keep some B-frames as references.
   none                    E..V..
   strict                  E..V.. Strictly hierarchical pyramid
   normal                  E..V.. Non-strict (not Blu-ray compatible)
-mixed-refs        <int>   E..V.. One reference per partition, as opposed to one reference per macroblock
-8x8dct            <int>   E..V.. High profile 8x8 transform.
-fast-pskip        <int>   E..V..
-aud               <int>   E..V.. Use access unit delimiters.
-mbtree            <int>   E..V.. Use macroblock tree ratecontrol.
-deblock           <string> E..V.. Loop filter parameters, in <alpha:beta> form.
-cplxblur          <float> E..V.. Reduce fluctuations in QP (before curve compression)
-partitions        <string> E..V.. A comma-separated list of partitions to consider. Possible values: p8x8, p4x4, b8x8, i8x8, i4x4, none, all
-direct-pred       <int>   E..V.. Direct MV prediction mode
   none                    E..V..
   spatial                 E..V..
   temporal                E..V..
   auto                    E..V..
-slice-max-size    <int>   E..V.. Limit the size of each slice in bytes
-stats             <string> E..V.. Filename for 2 pass stats
-nal-hrd           <int>   E..V.. Signal HRD information (requires vbv-bufsize; cbr not allowed in .mp4)
   none                    E..V..
   vbr                     E..V..
   cbr                     E..V..

libx264rgb AVOptions:
-preset            <string> E..V.. Set the encoding preset (cf. x264 --fullhelp)
-tune              <string> E..V.. Tune the encoding params (cf. x264 --fullhelp)
-profile           <string> E..V.. Set profile restrictions (cf. x264 --fullhelp) 
-fastfirstpass     <int>   E..V.. Use fast settings when encoding first pass
-level             <string> E..V.. Specify level (as defined by Annex A)
-passlogfile       <string> E..V.. Filename for 2 pass stats
-wpredp            <string> E..V.. Weighted prediction for P-frames
-x264opts          <string> E..V.. x264 options
-crf               <float> E..V.. Select the quality for constant quality mode
-crf_max           <float> E..V.. In CRF mode, prevents VBV from lowering quality beyond this point.
-qp                <int>   E..V.. Constant quantization parameter rate control method
-aq-mode           <int>   E..V.. AQ method
   none                    E..V..
   variance                E..V.. Variance AQ (complexity mask)
   autovariance            E..V.. Auto-variance AQ (experimental)
-aq-strength       <float> E..V.. AQ strength. Reduces blocking and blurring in flat and textured areas.
-psy               <int>   E..V.. Use psychovisual optimizations.
-psy-rd            <string> E..V.. Strength of psychovisual optimization, in <psy-rd>:<psy-trellis> format.
-rc-lookahead      <int>   E..V.. Number of frames to look ahead for frametype and ratecontrol
-weightb           <int>   E..V.. Weighted prediction for B-frames.
-weightp           <int>   E..V.. Weighted prediction analysis method.
   none                    E..V..
   simple                  E..V..
   smart                   E..V..
-ssim              <int>   E..V.. Calculate and print SSIM stats.
-intra-refresh     <int>   E..V.. Use Periodic Intra Refresh instead of IDR frames.
-b-bias            <int>   E..V.. Influences how often B-frames are used
-b-pyramid         <int>   E..V.. Keep some B-frames as references.
   none                    E..V..
   strict                  E..V.. Strictly hierarchical pyramid
   normal                  E..V.. Non-strict (not Blu-ray compatible)
-mixed-refs        <int>   E..V.. One reference per partition, as opposed to one reference per macroblock
-8x8dct            <int>   E..V.. High profile 8x8 transform.
-fast-pskip        <int>   E..V..
-aud               <int>   E..V.. Use access unit delimiters.
-mbtree            <int>   E..V.. Use macroblock tree ratecontrol.
-deblock           <string> E..V.. Loop filter parameters, in <alpha:beta> form.
-cplxblur          <float> E..V.. Reduce fluctuations in QP (before curve compression)
-partitions        <string> E..V.. A comma-separated list of partitions to consider. Possible values: p8x8, p4x4, b8x8, i8x8, i4x4, none, all
-direct-pred       <int>   E..V.. Direct MV prediction mode
   none                    E..V..
   spatial                 E..V..
   temporal                E..V..
   auto                    E..V..
-slice-max-size    <int>   E..V.. Limit the size of each slice in bytes
-stats             <string> E..V.. Filename for 2 pass stats
-nal-hrd           <int>   E..V.. Signal HRD information (requires vbv-bufsize; cbr not allowed in .mp4)
   none                    E..V..
   vbr                     E..V..
   cbr                     E..V..

libxavs AVOptions:
-crf               <float> E..V.. Select the quality for constant quality mode
-qp                <int>   E..V.. Constant quantization parameter rate control method
-b-bias            <int>   E..V.. Influences how often B-frames are used
-cplxblur          <float> E..V.. Reduce fluctuations in QP (before curve compression)
-direct-pred       <int>   E..V.. Direct MV prediction mode
   none                    E..V..
   spatial                 E..V..
   temporal                E..V..
   auto                    E..V..
-aud               <int>   E..V.. Use access unit delimiters.
-mbtree            <int>   E..V.. Use macroblock tree ratecontrol.
-mixed-refs        <int>   E..V.. One reference per partition, as opposed to one reference per macroblock
-fast-pskip        <int>   E..V..

AVFormatContext AVOptions:
-avioflags         <flags> ED....
   direct                  ED.... reduce buffering
-probesize         <int>   .D.... set probing size
-packetsize        <int>   E..... set packet size
-fflags            <flags> ED....
   ignidx                  .D.... ignore index
   genpts                  .D.... generate pts
   nofillin                .D.... do not fill in missing values that can be exactly calculated
   noparse                 .D.... disable AVParsers, this needs nofillin too
   igndts                  .D.... ignore dts
   discardcorrupt          .D.... discard corrupted frames
   sortdts                 .D.... try to interleave outputted packets by dts
   keepside                .D.... dont merge side data
   latm                    E..... enable RTP MP4A-LATM payload
   nobuffer                .D.... reduce the latency introduced by optional buffering
-analyzeduration   <int>   .D.... how many microseconds are analyzed to estimate duration
-cryptokey         <binary> .D.... decryption key
-indexmem          <int>   .D.... max memory used for timestamp index (per stream)
-rtbufsize         <int>   .D.... max memory used for buffering real-time frames
-fdebug            <flags> ED.... print specific debug info
   ts                      ED....
-max_delay         <int>   ED.... maximum muxing or demuxing delay in microseconds
-fpsprobesize      <int>   .D.... number of frames used to probe fps
-audio_preload     <int>   E..... microseconds by which audio packets should be interleaved earlier
-chunk_duration    <int>   E..... microseconds for each chunk
-chunk_size        <int>   E..... size in bytes for each chunk
-f_err_detect      <flags> .D.... set error detection flags (deprecated; use err_detect, save via avconv)
   crccheck                .D.... verify embedded CRCs
   bitstream               .D.... detect bitstream specification deviations
   buffer                  .D.... detect improper bitstream length
   explode                 .D.... abort decoding on minor error detection
   careful                 .D.... consider things that violate the spec and have not been seen in the wild as errors
   compliant               .D.... consider all spec non compliancies as errors
   aggressive              .D.... consider things that a sane encoder shouldnt do as an error
-err_detect        <flags> .D.... set error detection flags
   crccheck                .D.... verify embedded CRCs
   bitstream               .D.... detect bitstream specification deviations
   buffer                  .D.... detect improper bitstream length
   explode                 .D.... abort decoding on minor error detection
   careful                 .D.... consider things that violate the spec and have not been seen in the wild as errors
   compliant               .D.... consider all spec non compliancies as errors
   aggressive              .D.... consider things that a sane encoder shouldnt do as an error
-use_wallclock_as_timestamps <int>   .D.... use wallclock as timestamps
-avoid_negative_ts <int>   E..... avoid negative timestamps

AVIOContext AVOptions:

URLContext AVOptions:

crypto AVOptions:
-key               <binary> .D.... AES decryption key
-iv                <binary> .D.... AES decryption initialization vector

file AVOptions:
-truncate          <int>   E..... Truncate existing files on write

http AVOptions:
-seekable          <int>   .D.... Control seekability of connection
-chunked_post      <int>   E..... use chunked transfer-encoding for posts
-headers           <string> ED.... custom HTTP headers, can override built in default headers
-content_type      <string> ED.... force a content type
-user-agent        <string> .D.... override User-Agent header
-multiple_requests <int>   ED.... use persistent connections
-post_data         <binary> ED.... custom HTTP post data
-timeout           <int>   ED.... timeout of socket i/o operations

tcp AVOptions:
-listen            <int>   ED.... listen on port instead of connecting
-timeout           <int>   ED.... timeout of socket i/o operations
-listen_timeout    <int>   ED.... connection awaiting timeout

udp AVOptions:
-buffer_size       <int>   ED.... Socket buffer size in bytes
-localport         <int>   ED.... Set local port to bind to
-localaddr         <string> ED.... Choose local IP address
-pkt_size          <int>   ED.... Set size of UDP packets
-reuse             <int>   ED.... Explicitly allow or disallow reusing UDP sockets
-ttl               <int>   E..... Set the time to live value (for multicast only)
-connect           <int>   ED.... Should connect() be called on socket
-fifo_size         <int>   .D.... Set the UDP receiving circular buffer size, expressed as a number of packets with size of 188 bytes
-overrun_nonfatal  <int>   .D.... Survive in case of UDP receiving circular buffer overrun
-timeout           <int>   .D.... In read mode: if no data arrived in more than this time interval, raise error

librtmp protocol AVOptions:
-rtmp_app          <string> ED.... Name of application to connect to on the RTMP server
-rtmp_playpath     <string> ED.... Stream identifier to play or to publish

librtmpe protocol AVOptions:
-rtmp_app          <string> ED.... Name of application to connect to on the RTMP server
-rtmp_playpath     <string> ED.... Stream identifier to play or to publish

librtmps protocol AVOptions:
-rtmp_app          <string> ED.... Name of application to connect to on the RTMP server
-rtmp_playpath     <string> ED.... Stream identifier to play or to publish

librtmpt protocol AVOptions:
-rtmp_app          <string> ED.... Name of application to connect to on the RTMP server
-rtmp_playpath     <string> ED.... Stream identifier to play or to publish

librtmpte protocol AVOptions:
-rtmp_app          <string> ED.... Name of application to connect to on the RTMP server
-rtmp_playpath     <string> ED.... Stream identifier to play or to publish

DirectShow indev AVOptions:
-video_size        <image_size> .D.... set video size given a string such as 640x480 or hd720.
-pixel_format      <pix_fmt> .D.... set video pixel format
-framerate         <string> .D.... set video frame rate
-sample_rate       <int>   .D.... set audio sample rate
-sample_size       <int>   .D.... set audio sample size
-channels          <int>   .D.... set number of audio channels, such as 1 or 2
-list_devices      <int>   .D.... list available devices
   true                    .D.... 
   false                   .D.... 
-list_options      <int>   .D.... list available options for specified device
   true                    .D.... 
   false                   .D.... 
-video_device_number <int>   .D.... set video device number for devices with same name (starts at 0)
-audio_device_number <int>   .D.... set audio device number for devices with same name (starts at 0)
-audio_buffer_size <int>   .D.... set audio device buffer latency size in milliseconds (default is the device's default)

lavfi indev AVOptions:
-graph             <string> .D.... set libavfilter graph
-graph_file        <string> .D.... set libavfilter graph filename
-dumpgraph         <string> .D.... dump graph to stderr

VFW indev AVOptions:
-video_size        <string> .D.... A string describing frame size, such as 640x480 or hd720.
-framerate         <string> .D.... 

Artworx Data Format demuxer AVOptions:
-linespeed         <int>   .D.... set simulated line speed (bytes per second)
-video_size        <string> .D.... set video size, such as 640x480 or hd720.
-framerate         <string> .D.... set framerate (frames per second)

asf demuxer AVOptions:
-no_resync_search  <int>   .D.... Don't try to resynchronize by looking for a certain optional start code

avi AVOptions:
-use_odml          <int>   .D.... use odml index

Binary text demuxer AVOptions:
-linespeed         <int>   .D.... set simulated line speed (bytes per second)
-video_size        <string> .D.... set video size, such as 640x480 or hd720.
-framerate         <string> .D.... set framerate (frames per second)

cavsvideo demuxer AVOptions:
-framerate         <string> .D.... 

CDXL demuxer AVOptions:
-sample_rate       <int>   .D.... 
-framerate         <string> .D.... 

dirac demuxer AVOptions:
-framerate         <string> .D.... 

dnxhd demuxer AVOptions:
-framerate         <string> .D.... 

flvdec AVOptions:
-flv_metadata      <int>   .D.V.. Allocate streams according the onMetaData array

g729 demuxer AVOptions:
-bit_rate          <int>   .D.... 

gsm demuxer AVOptions:
-sample_rate       <int>   .D.... 

h261 demuxer AVOptions:
-framerate         <string> .D.... 

h263 demuxer AVOptions:
-framerate         <string> .D.... 

h264 demuxer AVOptions:
-framerate         <string> .D.... 

iCE Draw File demuxer AVOptions:
-linespeed         <int>   .D.... set simulated line speed (bytes per second)
-video_size        <string> .D.... set video size, such as 640x480 or hd720.
-framerate         <string> .D.... set framerate (frames per second)

image2 demuxer AVOptions:
-framerate         <string> .D.... set the video framerate
-loop              <int>   .D.... force loop over input file sequence
-pattern_type      <int>   .D.... set pattern type
   glob_sequence           .D.... glob/sequence pattern type
   glob                    .D.... glob pattern type
   sequence                .D.... glob pattern type
-pixel_format      <string> .D.... set video pixel format
-start_number      <int>   .D.... set first number in the sequence
-start_number_range <int>   .D.... set range for looking at the first sequence number
-video_size        <string> .D.... set video size

image2pipe demuxer AVOptions:
-framerate         <string> .D.... set the video framerate
-loop              <int>   .D.... force loop over input file sequence
-pattern_type      <int>   .D.... set pattern type
   glob_sequence           .D.... glob/sequence pattern type
   glob                    .D.... glob pattern type
   sequence                .D.... glob pattern type
-pixel_format      <string> .D.... set video pixel format
-start_number      <int>   .D.... set first number in the sequence
-start_number_range <int>   .D.... set range for looking at the first sequence number
-video_size        <string> .D.... set video size

ingenient demuxer AVOptions:
-framerate         <string> .D.... 

m4v demuxer AVOptions:
-framerate         <string> .D.... 

mjpeg demuxer AVOptions:
-framerate         <string> .D.... 

mov,mp4,m4a,3gp,3g2,mj2 AVOptions:
-use_absolute_path <int>   .D.V.. allow using absolute path when opening alias, this is a possible security issue
-ignore_editlist   <int>   .D.V.. 

mpegtsraw demuxer AVOptions:
-compute_pcr       <int>   .D.... Compute exact PCR for each transport stream packet.

mpegvideo demuxer AVOptions:
-framerate         <string> .D.... 

alaw demuxer AVOptions:
-sample_rate       <int>   .D.... 
-channels          <int>   .D.... 

mulaw demuxer AVOptions:
-sample_rate       <int>   .D.... 
-channels          <int>   .D.... 

f64be demuxer AVOptions:
-sample_rate       <int>   .D.... 
-channels          <int>   .D.... 

f64le demuxer AVOptions:
-sample_rate       <int>   .D.... 
-channels          <int>   .D.... 

f32be demuxer AVOptions:
-sample_rate       <int>   .D.... 
-channels          <int>   .D.... 

f32le demuxer AVOptions:
-sample_rate       <int>   .D.... 
-channels          <int>   .D.... 

s32be demuxer AVOptions:
-sample_rate       <int>   .D.... 
-channels          <int>   .D.... 

s32le demuxer AVOptions:
-sample_rate       <int>   .D.... 
-channels          <int>   .D.... 

s24be demuxer AVOptions:
-sample_rate       <int>   .D.... 
-channels          <int>   .D.... 

s24le demuxer AVOptions:
-sample_rate       <int>   .D.... 
-channels          <int>   .D.... 

s16be demuxer AVOptions:
-sample_rate       <int>   .D.... 
-channels          <int>   .D.... 

s16le demuxer AVOptions:
-sample_rate       <int>   .D.... 
-channels          <int>   .D.... 

s8 demuxer AVOptions:
-sample_rate       <int>   .D.... 
-channels          <int>   .D.... 

u32be demuxer AVOptions:
-sample_rate       <int>   .D.... 
-channels          <int>   .D.... 

u32le demuxer AVOptions:
-sample_rate       <int>   .D.... 
-channels          <int>   .D.... 

u24be demuxer AVOptions:
-sample_rate       <int>   .D.... 
-channels          <int>   .D.... 

u24le demuxer AVOptions:
-sample_rate       <int>   .D.... 
-channels          <int>   .D.... 

u16be demuxer AVOptions:
-sample_rate       <int>   .D.... 
-channels          <int>   .D.... 

u16le demuxer AVOptions:
-sample_rate       <int>   .D.... 
-channels          <int>   .D.... 

u8 demuxer AVOptions:
-sample_rate       <int>   .D.... 
-channels          <int>   .D.... 

rawvideo demuxer AVOptions:
-video_size        <string> .D.... A string describing frame size, such as 640x480 or hd720.
-pixel_format      <string> .D.... 
-framerate         <string> .D.... 

RTP demuxer AVOptions:
-rtp_flags         <flags> .D.... RTP flags
   filter_src              .D.... Only receive packets from the negotiated peer IP
   listen                  .D.... Wait for incoming connections
-reorder_queue_size <int>   .D.... Number of packets to buffer for handling of reordered packets

RTSP demuxer AVOptions:
-initial_pause     <int>   .D.... Don't start playing the stream immediately
-rtpflags          <flags> E..... RTP muxer flags
   latm                    E..... Use MP4A-LATM packetization instead of MPEG4-GENERIC for AAC
   rfc2190                 E..... Use RFC 2190 packetization instead of RFC 4629 for H.263
   skip_rtcp               E..... Don't send RTCP sender reports
   h264_mode0              E..... Use mode 0 for H264 in RTP
-rtsp_transport    <flags> ED.... RTSP transport protocols
   udp                     ED.... UDP
   tcp                     ED.... TCP
   udp_multicast           .D.... UDP multicast
   http                    .D.... HTTP tunneling
-rtsp_flags        <flags> .D.... RTSP flags
   filter_src              .D.... Only receive packets from the negotiated peer IP
   listen                  .D.... Wait for incoming connections
-allowed_media_types <flags> .D.... Media types to accept from the server
   video                   .D.... Video
   audio                   .D.... Audio
   data                    .D.... Data
-min_port          <int>   ED.... Minimum local UDP port
-max_port          <int>   ED.... Maximum local UDP port
-timeout           <int>   .D.... Maximum timeout (in seconds) to wait for incoming connections. -1 is infinite. Implies flag listen
-reorder_queue_size <int>   .D.... Number of packets to buffer for handling of reordered packets

sbg_demuxer AVOptions:
-sample_rate       <int>   .D.... 
-frame_size        <int>   .D.... 
-max_file_size     <int>   .D.... 

SDP demuxer AVOptions:
-sdp_flags         <flags> .D.... SDP flags
   filter_src              .D.... Only receive packets from the negotiated peer IP
   listen                  .D.... Wait for incoming connections
-allowed_media_types <flags> .D.... Media types to accept from the server
   video                   .D.... Video
   audio                   .D.... Audio
   data                    .D.... Data
-reorder_queue_size <int>   .D.... Number of packets to buffer for handling of reordered packets

TTY demuxer AVOptions:
-chars_per_frame   <int>   .D.... 
-video_size        <string> .D.... A string describing frame size, such as 640x480 or hd720.
-framerate         <string> .D.... 

vc1 demuxer AVOptions:
-framerate         <string> .D.... 

WAV demuxer AVOptions:
-ignore_length     <int>   .D.... Ignore length

eXtended BINary text (XBIN) demuxer AVOptions:
-linespeed         <int>   .D.... set simulated line speed (bytes per second)
-video_size        <string> .D.... set video size, such as 640x480 or hd720.
-framerate         <string> .D.... set framerate (frames per second)

sdl outdev AVOptions:
-window_title      <string> E..... set SDL window title
-icon_title        <string> E..... set SDL iconified window title
-window_size       <image_size> E..... set SDL window forced size

f4v muxer AVOptions:
-movflags          <flags> E..... MOV muxer flags
   rtphint                 E..... Add RTP hint tracks
   empty_moov              E..... Make the initial moov atom empty (not supported by QuickTime)
   frag_keyframe           E..... Fragment at video keyframes
   separate_moof           E..... Write separate moof/mdat atoms for each track
   frag_custom             E..... Flush fragments on caller requests
   isml                    E..... Create a live smooth streaming feed (for pushing to a publishing point)
   faststart               E..... Run a second pass to put the moov at the beginning of the file
-moov_size         <int>   E..... maximum moov size so it can be placed at the begin
-rtpflags          <flags> E..... RTP muxer flags
   latm                    E..... Use MP4A-LATM packetization instead of MPEG4-GENERIC for AAC
   rfc2190                 E..... Use RFC 2190 packetization instead of RFC 4629 for H.263
   skip_rtcp               E..... Don't send RTCP sender reports
   h264_mode0              E..... Use mode 0 for H264 in RTP
-skip_iods         <int>   E..... Skip writing iods atom.
-iods_audio_profile <int>   E..... iods audio profile atom.
-iods_video_profile <int>   E..... iods video profile atom.
-frag_duration     <int>   E..... Maximum fragment duration
-min_frag_duration <int>   E..... Minimum fragment duration
-frag_size         <int>   E..... Maximum fragment size
-ism_lookahead     <int>   E..... Number of lookahead entries for ISM files
-use_editlist      <int>   E..... use edit list

GIF muxer AVOptions:
-loop              <int>   E..... Number of times to loop the output.

image2 muxer AVOptions:
-updatefirst       <int>   E..... 
-start_number      <int>   E..... first number in the sequence

ipod muxer AVOptions:
-movflags          <flags> E..... MOV muxer flags
   rtphint                 E..... Add RTP hint tracks
   empty_moov              E..... Make the initial moov atom empty (not supported by QuickTime)
   frag_keyframe           E..... Fragment at video keyframes
   separate_moof           E..... Write separate moof/mdat atoms for each track
   frag_custom             E..... Flush fragments on caller requests
   isml                    E..... Create a live smooth streaming feed (for pushing to a publishing point)
   faststart               E..... Run a second pass to put the moov at the beginning of the file
-moov_size         <int>   E..... maximum moov size so it can be placed at the begin
-rtpflags          <flags> E..... RTP muxer flags
   latm                    E..... Use MP4A-LATM packetization instead of MPEG4-GENERIC for AAC
   rfc2190                 E..... Use RFC 2190 packetization instead of RFC 4629 for H.263
   skip_rtcp               E..... Don't send RTCP sender reports
   h264_mode0              E..... Use mode 0 for H264 in RTP
-skip_iods         <int>   E..... Skip writing iods atom.
-iods_audio_profile <int>   E..... iods audio profile atom.
-iods_video_profile <int>   E..... iods video profile atom.
-frag_duration     <int>   E..... Maximum fragment duration
-min_frag_duration <int>   E..... Minimum fragment duration
-frag_size         <int>   E..... Maximum fragment size
-ism_lookahead     <int>   E..... Number of lookahead entries for ISM files
-use_editlist      <int>   E..... use edit list

ismv muxer AVOptions:
-movflags          <flags> E..... MOV muxer flags
   rtphint                 E..... Add RTP hint tracks
   empty_moov              E..... Make the initial moov atom empty (not supported by QuickTime)
   frag_keyframe           E..... Fragment at video keyframes
   separate_moof           E..... Write separate moof/mdat atoms for each track
   frag_custom             E..... Flush fragments on caller requests
   isml                    E..... Create a live smooth streaming feed (for pushing to a publishing point)
   faststart               E..... Run a second pass to put the moov at the beginning of the file
-moov_size         <int>   E..... maximum moov size so it can be placed at the begin
-rtpflags          <flags> E..... RTP muxer flags
   latm                    E..... Use MP4A-LATM packetization instead of MPEG4-GENERIC for AAC
   rfc2190                 E..... Use RFC 2190 packetization instead of RFC 4629 for H.263
   skip_rtcp               E..... Don't send RTCP sender reports
   h264_mode0              E..... Use mode 0 for H264 in RTP
-skip_iods         <int>   E..... Skip writing iods atom.
-iods_audio_profile <int>   E..... iods audio profile atom.
-iods_video_profile <int>   E..... iods video profile atom.
-frag_duration     <int>   E..... Maximum fragment duration
-min_frag_duration <int>   E..... Minimum fragment duration
-frag_size         <int>   E..... Maximum fragment size
-ism_lookahead     <int>   E..... Number of lookahead entries for ISM files
-use_editlist      <int>   E..... use edit list

LATM/LOAS muxer AVOptions:
-smc-interval      <int>   E..... StreamMuxConfig interval.

mov muxer AVOptions:
-movflags          <flags> E..... MOV muxer flags
   rtphint                 E..... Add RTP hint tracks
   empty_moov              E..... Make the initial moov atom empty (not supported by QuickTime)
   frag_keyframe           E..... Fragment at video keyframes
   separate_moof           E..... Write separate moof/mdat atoms for each track
   frag_custom             E..... Flush fragments on caller requests
   isml                    E..... Create a live smooth streaming feed (for pushing to a publishing point)
   faststart               E..... Run a second pass to put the moov at the beginning of the file
-moov_size         <int>   E..... maximum moov size so it can be placed at the begin
-rtpflags          <flags> E..... RTP muxer flags
   latm                    E..... Use MP4A-LATM packetization instead of MPEG4-GENERIC for AAC
   rfc2190                 E..... Use RFC 2190 packetization instead of RFC 4629 for H.263
   skip_rtcp               E..... Don't send RTCP sender reports
   h264_mode0              E..... Use mode 0 for H264 in RTP
-skip_iods         <int>   E..... Skip writing iods atom.
-iods_audio_profile <int>   E..... iods audio profile atom.
-iods_video_profile <int>   E..... iods video profile atom.
-frag_duration     <int>   E..... Maximum fragment duration
-min_frag_duration <int>   E..... Minimum fragment duration
-frag_size         <int>   E..... Maximum fragment size
-ism_lookahead     <int>   E..... Number of lookahead entries for ISM files
-use_editlist      <int>   E..... use edit list

MP3 muxer AVOptions:
-id3v2_version     <int>   E..... Select ID3v2 version to write. Currently 3 and 4 are supported.
-write_id3v1       <int>   E..... Enable ID3v1 writing. ID3v1 tags are written in UTF-8 which may not be supported by most software.

mp4 muxer AVOptions:
-movflags          <flags> E..... MOV muxer flags
   rtphint                 E..... Add RTP hint tracks
   empty_moov              E..... Make the initial moov atom empty (not supported by QuickTime)
   frag_keyframe           E..... Fragment at video keyframes
   separate_moof           E..... Write separate moof/mdat atoms for each track
   frag_custom             E..... Flush fragments on caller requests
   isml                    E..... Create a live smooth streaming feed (for pushing to a publishing point)
   faststart               E..... Run a second pass to put the moov at the beginning of the file
-moov_size         <int>   E..... maximum moov size so it can be placed at the begin
-rtpflags          <flags> E..... RTP muxer flags
   latm                    E..... Use MP4A-LATM packetization instead of MPEG4-GENERIC for AAC
   rfc2190                 E..... Use RFC 2190 packetization instead of RFC 4629 for H.263
   skip_rtcp               E..... Don't send RTCP sender reports
   h264_mode0              E..... Use mode 0 for H264 in RTP
-skip_iods         <int>   E..... Skip writing iods atom.
-iods_audio_profile <int>   E..... iods audio profile atom.
-iods_video_profile <int>   E..... iods video profile atom.
-frag_duration     <int>   E..... Maximum fragment duration
-min_frag_duration <int>   E..... Minimum fragment duration
-frag_size         <int>   E..... Maximum fragment size
-ism_lookahead     <int>   E..... Number of lookahead entries for ISM files
-use_editlist      <int>   E..... use edit list

mpeg muxer AVOptions:
-muxrate           <int>   E.....
-preload           <int>   E..... Initial demux-decode delay in microseconds.

vcd muxer AVOptions:
-muxrate           <int>   E.....
-preload           <int>   E..... Initial demux-decode delay in microseconds.

dvd muxer AVOptions:
-muxrate           <int>   E.....
-preload           <int>   E..... Initial demux-decode delay in microseconds.

svcd muxer AVOptions:
-muxrate           <int>   E.....
-preload           <int>   E..... Initial demux-decode delay in microseconds.

vob muxer AVOptions:
-muxrate           <int>   E.....
-preload           <int>   E..... Initial demux-decode delay in microseconds.

MPEGTS muxer AVOptions:
-mpegts_transport_stream_id <int>   E..... Set transport_stream_id field.
-mpegts_original_network_id <int>   E..... Set original_network_id field.
-mpegts_service_id <int>   E..... Set service_id field.
-mpegts_pmt_start_pid <int>   E..... Set the first pid of the PMT.
-mpegts_start_pid  <int>   E..... Set the first pid.
-mpegts_m2ts_mode  <int>   E..... Enable m2ts mode.
-muxrate           <int>   E.....
-pes_payload_size  <int>   E..... Minimum PES packet payload in bytes
-mpegts_flags      <flags> E..... MPEG-TS muxing flags
   resend_headers          E..... Reemit PAT/PMT before writing the next packet
   latm                    E..... Use LATM packetization for AAC
-resend_headers    <int>   E..... Reemit PAT/PMT before writing the next packet
-mpegts_copyts     <int>   E..... dont offset dts/pts

Ogg muxer AVOptions:
-oggpagesize       <int>   E..... Set preferred Ogg page size.
-pagesize          <int>   E..... preferred page size in bytes

psp muxer AVOptions:
-movflags          <flags> E..... MOV muxer flags
   rtphint                 E..... Add RTP hint tracks
   empty_moov              E..... Make the initial moov atom empty (not supported by QuickTime)
   frag_keyframe           E..... Fragment at video keyframes
   separate_moof           E..... Write separate moof/mdat atoms for each track
   frag_custom             E..... Flush fragments on caller requests
   isml                    E..... Create a live smooth streaming feed (for pushing to a publishing point)
   faststart               E..... Run a second pass to put the moov at the beginning of the file
-moov_size         <int>   E..... maximum moov size so it can be placed at the begin
-rtpflags          <flags> E..... RTP muxer flags
   latm                    E..... Use MP4A-LATM packetization instead of MPEG4-GENERIC for AAC
   rfc2190                 E..... Use RFC 2190 packetization instead of RFC 4629 for H.263
   skip_rtcp               E..... Don't send RTCP sender reports
   h264_mode0              E..... Use mode 0 for H264 in RTP
-skip_iods         <int>   E..... Skip writing iods atom.
-iods_audio_profile <int>   E..... iods audio profile atom.
-iods_video_profile <int>   E..... iods video profile atom.
-frag_duration     <int>   E..... Maximum fragment duration
-min_frag_duration <int>   E..... Minimum fragment duration
-frag_size         <int>   E..... Maximum fragment size
-ism_lookahead     <int>   E..... Number of lookahead entries for ISM files
-use_editlist      <int>   E..... use edit list

RTP muxer AVOptions:
-rtpflags          <flags> E..... RTP muxer flags
   latm                    E..... Use MP4A-LATM packetization instead of MPEG4-GENERIC for AAC
   rfc2190                 E..... Use RFC 2190 packetization instead of RFC 4629 for H.263
   skip_rtcp               E..... Don't send RTCP sender reports
   h264_mode0              E..... Use mode 0 for H264 in RTP
-payload_type      <int>   E..... Specify RTP payload type
-ssrc              <int>   E..... Stream identifier

RTSP muxer AVOptions:
-initial_pause     <int>   .D.... Don't start playing the stream immediately
-rtpflags          <flags> E..... RTP muxer flags
   latm                    E..... Use MP4A-LATM packetization instead of MPEG4-GENERIC for AAC
   rfc2190                 E..... Use RFC 2190 packetization instead of RFC 4629 for H.263
   skip_rtcp               E..... Don't send RTCP sender reports
   h264_mode0              E..... Use mode 0 for H264 in RTP
-rtsp_transport    <flags> ED.... RTSP transport protocols
   udp                     ED.... UDP
   tcp                     ED.... TCP
   udp_multicast           .D.... UDP multicast
   http                    .D.... HTTP tunneling
-rtsp_flags        <flags> .D.... RTSP flags
   filter_src              .D.... Only receive packets from the negotiated peer IP
   listen                  .D.... Wait for incoming connections
-allowed_media_types <flags> .D.... Media types to accept from the server
   video                   .D.... Video
   audio                   .D.... Audio
   data                    .D.... Data
-min_port          <int>   ED.... Minimum local UDP port
-max_port          <int>   ED.... Maximum local UDP port
-timeout           <int>   .D.... Maximum timeout (in seconds) to wait for incoming connections. -1 is infinite. Implies flag listen
-reorder_queue_size <int>   .D.... Number of packets to buffer for handling of reordered packets

segment muxer AVOptions:
-segment_format    <string> E..... set container format used for the segments
-segment_list      <string> E..... set the segment list filename
-segment_list_flags <flags> E..... set flags affecting segment list generation
   cache                   E..... allow list caching
   live                    E..... enable live-friendly list generation (useful for HLS)
-segment_list_size <int>   E..... set the maximum number of playlist entries
-segment_list_type <int>   E..... set the segment list type
-segment_time      <string> E..... set segment duration
-segment_time_delta <string> E..... set approximation value used for the segment times
-segment_times     <string> E..... set segment split time points
-segment_wrap      <int>   E..... set number after which the index wraps
-individual_header_trailer <int>   E..... write header/trailer to each segment
-write_header_trailer <int>   E..... write a header to the first segment and a trailer to the last one

stream_segment muxer AVOptions:
-segment_format    <string> E..... set container format used for the segments
-segment_list      <string> E..... set the segment list filename
-segment_list_flags <flags> E..... set flags affecting segment list generation
   cache                   E..... allow list caching
   live                    E..... enable live-friendly list generation (useful for HLS)
-segment_list_size <int>   E..... set the maximum number of playlist entries
-segment_list_type <int>   E..... set the segment list type
-segment_time      <string> E..... set segment duration
-segment_time_delta <string> E..... set approximation value used for the segment times
-segment_times     <string> E..... set segment split time points
-segment_wrap      <int>   E..... set number after which the index wraps
-individual_header_trailer <int>   E..... write header/trailer to each segment
-write_header_trailer <int>   E..... write a header to the first segment and a trailer to the last one

smooth streaming muxer AVOptions:
-window_size       <int>   E..... number of fragments kept in the manifest
-extra_window_size <int>   E..... number of fragments kept outside of the manifest before removing from disk
-lookahead_count   <int>   E..... number of lookahead fragments
-min_frag_duration <int64> E..... minimum fragment duration (in microseconds)
-remove_at_exit    <int>   E..... remove all fragments when finished

spdif AVOptions:
-spdif_flags       <flags> E..... IEC 61937 encapsulation flags
   be                      E..... output in big-endian format (for use as s16be)
-dtshd_rate        <int>   E..... mux complete DTS frames in HD mode at the specified IEC958 rate (in Hz, default 0=disabled)
-dtshd_fallback_time <int>   E..... min secs to strip HD for after an overflow (-1: till the end, default 60)

tg2 muxer AVOptions:
-movflags          <flags> E..... MOV muxer flags
   rtphint                 E..... Add RTP hint tracks
   empty_moov              E..... Make the initial moov atom empty (not supported by QuickTime)
   frag_keyframe           E..... Fragment at video keyframes
   separate_moof           E..... Write separate moof/mdat atoms for each track
   frag_custom             E..... Flush fragments on caller requests
   isml                    E..... Create a live smooth streaming feed (for pushing to a publishing point)
   faststart               E..... Run a second pass to put the moov at the beginning of the file
-moov_size         <int>   E..... maximum moov size so it can be placed at the begin
-rtpflags          <flags> E..... RTP muxer flags
   latm                    E..... Use MP4A-LATM packetization instead of MPEG4-GENERIC for AAC
   rfc2190                 E..... Use RFC 2190 packetization instead of RFC 4629 for H.263
   skip_rtcp               E..... Don't send RTCP sender reports
   h264_mode0              E..... Use mode 0 for H264 in RTP
-skip_iods         <int>   E..... Skip writing iods atom.
-iods_audio_profile <int>   E..... iods audio profile atom.
-iods_video_profile <int>   E..... iods video profile atom.
-frag_duration     <int>   E..... Maximum fragment duration
-min_frag_duration <int>   E..... Minimum fragment duration
-frag_size         <int>   E..... Maximum fragment size
-ism_lookahead     <int>   E..... Number of lookahead entries for ISM files
-use_editlist      <int>   E..... use edit list

tgp muxer AVOptions:
-movflags          <flags> E..... MOV muxer flags
   rtphint                 E..... Add RTP hint tracks
   empty_moov              E..... Make the initial moov atom empty (not supported by QuickTime)
   frag_keyframe           E..... Fragment at video keyframes
   separate_moof           E..... Write separate moof/mdat atoms for each track
   frag_custom             E..... Flush fragments on caller requests
   isml                    E..... Create a live smooth streaming feed (for pushing to a publishing point)
   faststart               E..... Run a second pass to put the moov at the beginning of the file
-moov_size         <int>   E..... maximum moov size so it can be placed at the begin
-rtpflags          <flags> E..... RTP muxer flags
   latm                    E..... Use MP4A-LATM packetization instead of MPEG4-GENERIC for AAC
   rfc2190                 E..... Use RFC 2190 packetization instead of RFC 4629 for H.263
   skip_rtcp               E..... Don't send RTCP sender reports
   h264_mode0              E..... Use mode 0 for H264 in RTP
-skip_iods         <int>   E..... Skip writing iods atom.
-iods_audio_profile <int>   E..... iods audio profile atom.
-iods_video_profile <int>   E..... iods video profile atom.
-frag_duration     <int>   E..... Maximum fragment duration
-min_frag_duration <int>   E..... Minimum fragment duration
-frag_size         <int>   E..... Maximum fragment size
-ism_lookahead     <int>   E..... Number of lookahead entries for ISM files
-use_editlist      <int>   E..... use edit list

WAV muxer AVOptions:
-write_bext        <int>   E..... Write BEXT chunk.

SWScaler AVOptions:
-sws_flags         <flags> E..V.. scaler flags
   fast_bilinear           E..V.. fast bilinear
   bilinear                E..V.. bilinear
   bicubic                 E..V.. bicubic
   experimental            E..V.. experimental
   neighbor                E..V.. nearest neighbor
   area                    E..V.. averaging area
   bicublin                E..V.. luma bicubic, chroma bilinear
   gauss                   E..V.. gaussian
   sinc                    E..V.. sinc
   lanczos                 E..V.. lanczos
   spline                  E..V.. natural bicubic spline
   print_info              E..V.. print info
   accurate_rnd            E..V.. accurate rounding
   full_chroma_int         E..V.. full chroma interpolation
   full_chroma_inp         E..V.. full chroma input
   bitexact                E..V.. 
-srcw              <int>   E..V.. source width
-srch              <int>   E..V.. source height
-dstw              <int>   E..V.. destination width
-dsth              <int>   E..V.. destination height
-src_format        <int>   E..V.. source format
-dst_format        <int>   E..V.. destination format
-src_range         <int>   E..V.. source range
-dst_range         <int>   E..V.. destination range
-param0            <double> E..V.. scaler param 0
-param1            <double> E..V.. scaler param 1

SWResampler AVOptions:
-ich               <int>   ....A. set input channel count
-in_channel_count  <int>   ....A. set input channel count
-och               <int>   ....A. set output channel count
-out_channel_count <int>   ....A. set output channel count
-uch               <int>   ....A. set used channel count
-used_channel_count <int>   ....A. set used channel count
-isr               <int>   ....A. set input sample rate
-in_sample_rate    <int>   ....A. set input sample rate
-osr               <int>   ....A. set output sample rate
-out_sample_rate   <int>   ....A. set output sample rate
-isf               <int>   ....A. set input sample format
-in_sample_fmt     <int>   ....A. set input sample format
-osf               <int>   ....A. set output sample format
-out_sample_fmt    <int>   ....A. set output sample format
-tsf               <int>   ....A. set internal sample format
-internal_sample_fmt <int>   ....A. set internal sample format
-icl               <int64> ....A. set input channel layout
-in_channel_layout <int64> ....A. set input channel layout
-ocl               <int64> ....A. set output channel layout
-out_channel_layout <int64> ....A. set output channel layout
-clev              <float> ....A. set center mix level
-center_mix_level  <float> ....A. set center mix level
-slev              <float> ....A. set surround mix level
-surround_mix_level <float> ....A. set surround mix Level
-lfe_mix_level     <float> ....A. set LFE mix level
-rmvol             <float> ....A. set rematrix volume
-rematrix_volume   <float> ....A. set rematrix volume
-flags             <flags> ....A. set flags
   res                     ....A. force resampling
-swr_flags         <flags> ....A. set flags
   res                     ....A. force resampling
-dither_scale      <float> ....A. set dither scale
-dither_method     <int>   ....A. set dither method
   rectangular             ....A. select rectangular dither
   triangular              ....A. select triangular dither
   triangular_hp           ....A. select triangular dither with high pass
-filter_size       <int>   ....A. set resampling filter size
-phase_shift       <int>   ....A. set resampling phase shift
-linear_interp     <int>   ....A. enable linear interpolation
-cutoff            <double> ....A. set cutoff frequency ratio
-min_comp          <float> ....A. set minimum difference between timestamps and audio data (in seconds) below which no timestamp compensation of either kind is applied
-min_hard_comp     <float> ....A. set minimum difference between timestamps and audio data (in seconds) to trigger padding/trimming the data.
-comp_duration     <float> ....A. set duration (in seconds) over which data is stretched/squeezed to make it match the timestamps.
-max_soft_comp     <float> ....A. set maximum factor by which data is stretched/squeezed to make it match the timestamps.
-matrix_encoding   <int>   ....A. set matrixed stereo encoding
   none                    ....A. select none
   dolby                   ....A. select Dolby
   dplii                   ....A. select Dolby Pro Logic II
-filter_type       <int>   ....A. select filter type
   cubic                   ....A. select cubic
   blackman_nuttall         ....A. select Blackman Nuttall Windowed Sinc
   kaiser                  ....A. select Kaiser Windowed Sinc
-kaiser_beta       <int>   ....A. set Kaiser Window Beta

aformat AVOptions:
-sample_fmts       <string> ..F.A. A comma-separated list of sample formats.
-sample_rates      <string> ..F.A. A comma-separated list of sample rates.
-channel_layouts   <string> ..F.A. A comma-separated list of channel layouts.

amerge AVOptions:
-inputs            <int>   ..F.A. specify the number of inputs

amix AVOptions:
-inputs            <int>   ..F.A. Number of inputs.
-duration          <int>   ..F.A. How to determine the end-of-stream.
   longest                 ..F.A. Duration of longest input.
   shortest                ..F.A. Duration of shortest input.
   first                   ..F.A. Duration of first input.
-dropout_transition <float> ..F.A. Transition time, in seconds, for volume renormalization when an input stream ends.

asetnsamples AVOptions:
-pad               <int>   ..F.A. pad last frame with zeros
-p                 <int>   ..F.A. pad last frame with zeros
-nb_out_samples    <int>   ..F.A. set the number of per-frame output samples
-n                 <int>   ..F.A. set the number of per-frame output samples

channel map filter AVOptions:
-map               <string> ..F.A. A comma-separated list of input channel numbers in output order.
-channel_layout    <string> ..F.A. Output channel layout.

channelsplit AVOptions:
-channel_layout    <string> ..F.A. Input channel layout.

join filter AVOptions:
-inputs            <int>   ..F.A. Number of input streams.
-channel_layout    <string> ..F.A. Channel layout of the output stream.
-map               <string> ..F.A. A comma-separated list of channels maps in the format 'input_stream.input_channel-output_channel.

silencedetect AVOptions:
-n                 <string> ..F.A. set noise tolerance
-noise             <string> ..F.A. set noise tolerance
-d                 <double> ..F.A. set minimum duration in seconds
-duration          <double> ..F.A. set minimum duration in seconds

aevalsrc AVOptions:
-nb_samples        <int>   ..F.A. set the number of samples per requested frame
-n                 <int>   ..F.A. set the number of samples per requested frame
-sample_rate       <string> ..F.A. set the sample rate
-s                 <string> ..F.A. set the sample rate
-duration          <string> ..F.A. set audio duration
-d                 <string> ..F.A. set audio duration
-channel_layout    <string> ..F.A. set channel layout
-c                 <string> ..F.A. set channel layout

anullsrc AVOptions:
-channel_layout    <string> ..F.A. set channel_layout
-cl                <string> ..F.A. set channel_layout
-sample_rate       <string> ..F.A. set sample rate
-r                 <string> ..F.A. set sample rate
-nb_samples        <int>   ..F.A. set the number of samples per requested frame
-n                 <int>   ..F.A. set the number of samples per requested frame

ass AVOptions:
-filename          <string> ..FV.. set the filename of the ASS file to read
-f                 <string> ..FV.. set the filename of the ASS file to read
-original_size     <image_size> ..FV.. set the size of the original video (used to scale fonts)

blackdetect AVOptions:
-d                 <double> ..FV.. set minimum detected black duration in seconds
-black_min_duration <double> ..FV.. set minimum detected black duration in seconds
-picture_black_ratio_th <double> ..FV.. set the picture black ratio threshold
-pic_th            <double> ..FV.. set the picture black ratio threshold
-pixel_black_th    <double> ..FV.. set the pixel black threshold
-pix_th            <double> ..FV.. set the pixel black threshold

drawbox AVOptions:
-x                 <int>   ..FV.. set the box top-left corner x position
-y                 <int>   ..FV.. set the box top-left corner y position
-width             <int>   ..FV.. set the box width
-w                 <int>   ..FV.. set the box width
-height            <int>   ..FV.. set the box height
-h                 <int>   ..FV.. set the box height
-color             <string> ..FV.. set the box edge color
-c                 <string> ..FV.. set the box edge color
-thickness         <int>   ..FV.. set the box maximum thickness
-t                 <int>   ..FV.. set the box maximum thickness

drawtext AVOptions:
-fontfile          <string> ..FV.. set font file
-text              <string> ..FV.. set text
-textfile          <string> ..FV.. set text file
-fontcolor         <string> ..FV.. set foreground color
-boxcolor          <string> ..FV.. set box color
-shadowcolor       <string> ..FV.. set shadow color
-box               <int>   ..FV.. set box
-fontsize          <int>   ..FV.. set font size
-x                 <string> ..FV.. set x expression
-y                 <string> ..FV.. set y expression
-shadowx           <int>   ..FV.. set x
-shadowy           <int>   ..FV.. set y
-tabsize           <int>   ..FV.. set tab size
-basetime          <int64> ..FV.. set base time
-draw              <string> ..FV.. if false do not draw
-timecode          <string> ..FV.. set initial timecode
-tc24hmax          <int>   ..FV.. set 24 hours max (timecode only)
-timecode_rate     <rational> ..FV.. set rate (timecode only)
-r                 <rational> ..FV.. set rate (timecode only)
-rate              <rational> ..FV.. set rate (timecode only)
-fix_bounds        <int>   ..FV.. if true, check and fix text coords to avoid clipping
-ft_load_flags     <flags> ..FV.. set font loading flags for libfreetype
   default                 ..FV.. set default
   no_scale                ..FV.. set no_scale
   no_hinting              ..FV.. set no_hinting
   render                  ..FV.. set render
   no_bitmap               ..FV.. set no_bitmap
   vertical_layout         ..FV.. set vertical_layout
   force_autohint          ..FV.. set force_autohint
   crop_bitmap             ..FV.. set crop_bitmap
   pedantic                ..FV.. set pedantic
   ignore_global_advance_width         ..FV.. set ignore_global_advance_width
   no_recurse              ..FV.. set no_recurse
   ignore_transform         ..FV.. set ignore_transform
   monochrome              ..FV.. set monochrome
   linear_design           ..FV.. set linear_design
   no_autohint             ..FV.. set no_autohint

fade AVOptions:
-type              <string> ..FV.. set the fade direction
-t                 <string> ..FV.. set the fade direction
-start_frame       <int>   ..FV.. set expression of frame to start fading
-s                 <int>   ..FV.. set expression of frame to start fading
-nb_frames         <int>   ..FV.. set expression for fade duration in frames
-n                 <int>   ..FV.. set expression for fade duration in frames
-alpha             <int>   ..FV.. fade alpha if it is available on the input

field AVOptions:
-type              <int>   ..FV.. set field type (top or bottom)
   top                     ..FV.. select top field
   bottom                  ..FV.. select bottom field

fps AVOptions:
-fps               <string> ..FV.. A string describing desired output framerate
-round             <int>   ..FV.. set rounding method for timestamps
   zero                    ..FV.. round towards 0
   inf                     ..FV.. round away from 0
   down                    ..FV.. round towards -infty
   up                      ..FV.. round towards +infty
   near                    ..FV.. round to nearest

hue AVOptions:
-h                 <string> ..FV.. set the hue angle degrees expression
-H                 <string> ..FV.. set the hue angle radians expression
-s                 <string> ..FV.. set the saturation expression

lut AVOptions:
-c0                <string> ..FV.. set component #0 expression
-c1                <string> ..FV.. set component #1 expression
-c2                <string> ..FV.. set component #2 expression
-c3                <string> ..FV.. set component #3 expression
-y                 <string> ..FV.. set Y expression
-u                 <string> ..FV.. set U expression
-v                 <string> ..FV.. set V expression
-r                 <string> ..FV.. set R expression
-g                 <string> ..FV.. set G expression
-b                 <string> ..FV.. set B expression
-a                 <string> ..FV.. set A expression

lutrgb AVOptions:
-c0                <string> ..FV.. set component #0 expression
-c1                <string> ..FV.. set component #1 expression
-c2                <string> ..FV.. set component #2 expression
-c3                <string> ..FV.. set component #3 expression
-y                 <string> ..FV.. set Y expression
-u                 <string> ..FV.. set U expression
-v                 <string> ..FV.. set V expression
-r                 <string> ..FV.. set R expression
-g                 <string> ..FV.. set G expression
-b                 <string> ..FV.. set B expression
-a                 <string> ..FV.. set A expression

lutyuv AVOptions:
-c0                <string> ..FV.. set component #0 expression
-c1                <string> ..FV.. set component #1 expression
-c2                <string> ..FV.. set component #2 expression
-c3                <string> ..FV.. set component #3 expression
-y                 <string> ..FV.. set Y expression
-u                 <string> ..FV.. set U expression
-v                 <string> ..FV.. set V expression
-r                 <string> ..FV.. set R expression
-g                 <string> ..FV.. set G expression
-b                 <string> ..FV.. set B expression
-a                 <string> ..FV.. set A expression

negate AVOptions:
-c0                <string> ..FV.. set component #0 expression
-c1                <string> ..FV.. set component #1 expression
-c2                <string> ..FV.. set component #2 expression
-c3                <string> ..FV.. set component #3 expression
-y                 <string> ..FV.. set Y expression
-u                 <string> ..FV.. set U expression
-v                 <string> ..FV.. set V expression
-r                 <string> ..FV.. set R expression
-g                 <string> ..FV.. set G expression
-b                 <string> ..FV.. set B expression
-a                 <string> ..FV.. set A expression

overlay AVOptions:
-x                 <string> ..FV.. set the x expression
-y                 <string> ..FV.. set the y expression
-rgb               <int>   ..FV.. force packed RGB in input and output

scale AVOptions:
-w                 <string> ..FV.. set width expression
-width             <string> ..FV.. set width expression
-h                 <string> ..FV.. set height expression
-height            <string> ..FV.. set height expression
-flags             <string> ..FV.. set libswscale flags
-interl            <int>   ..FV.. set interlacing

setdar AVOptions:
-max               <int>   ..FV.. set max value for nominator or denominator in the ratio
-ratio             <string> ..FV.. set ratio
-r                 <string> ..FV.. set ratio

setsar AVOptions:
-max               <int>   ..FV.. set max value for nominator or denominator in the ratio
-ratio             <string> ..FV.. set ratio
-r                 <string> ..FV.. set ratio

transpose AVOptions:
-dir               <int>   ..FV.. set transpose direction
-passthrough       <int>   ..FV.. do not apply transposition if the input matches the specified geometry
   none                    ..FV.. always apply transposition
   portrait                ..FV.. preserve portrait geometry
   landscape               ..FV.. preserve landscape geometry

cellauto AVOptions:
-filename          <string> ..FV.. read initial pattern from file
-f                 <string> ..FV.. read initial pattern from file
-pattern           <string> ..FV.. set initial pattern
-p                 <string> ..FV.. set initial pattern
-rate              <string> ..FV.. set video rate
-r                 <string> ..FV.. set video rate
-size              <image_size> ..FV.. set video size
-s                 <image_size> ..FV.. set video size
-rule              <int>   ..FV.. set rule
-random_fill_ratio <double> ..FV.. set fill ratio for filling initial grid randomly
-ratio             <double> ..FV.. set fill ratio for filling initial grid randomly
-random_seed       <int>   ..FV.. set the seed for filling the initial grid randomly
-seed              <int>   ..FV.. set the seed for filling the initial grid randomly
-scroll            <int>   ..FV.. scroll pattern downward
-start_full        <int>   ..FV.. start filling the whole video
-full              <int>   ..FV.. start filling the whole video
-stitch            <int>   ..FV.. stitch boundaries

color AVOptions:
-size              <image_size> ..FV.. set video size
-s                 <image_size> ..FV.. set video size
-rate              <string> ..FV.. set video rate
-r                 <string> ..FV.. set video rate
-duration          <string> ..FV.. set video duration
-d                 <string> ..FV.. set video duration
-sar               <rational> ..FV.. set video sample aspect ratio
-color             <string> ..FV.. set color
-c                 <string> ..FV.. set color
-decimals          <int>   ..FV.. set number of decimals to show
-n                 <int>   ..FV.. set number of decimals to show

life AVOptions:
-filename          <string> ..FV.. set source file
-f                 <string> ..FV.. set source file
-size              <image_size> ..FV.. set video size
-s                 <image_size> ..FV.. set video size
-rate              <string> ..FV.. set video rate
-r                 <string> ..FV.. set video rate
-rule              <string> ..FV.. set rule
-random_fill_ratio <double> ..FV.. set fill ratio for filling initial grid randomly
-ratio             <double> ..FV.. set fill ratio for filling initial grid randomly
-random_seed       <int>   ..FV.. set the seed for filling the initial grid randomly
-seed              <int>   ..FV.. set the seed for filling the initial grid randomly
-stitch            <int>   ..FV.. stitch boundaries
-mold              <int>   ..FV.. set mold speed for dead cells
-life_color        <string> ..FV.. set life color
-death_color       <string> ..FV.. set death color
-mold_color        <string> ..FV.. set mold color

nullsrc AVOptions:
-size              <image_size> ..FV.. set video size
-s                 <image_size> ..FV.. set video size
-rate              <string> ..FV.. set video rate
-r                 <string> ..FV.. set video rate
-duration          <string> ..FV.. set video duration
-d                 <string> ..FV.. set video duration
-sar               <rational> ..FV.. set video sample aspect ratio
-color             <string> ..FV.. set color
-c                 <string> ..FV.. set color
-decimals          <int>   ..FV.. set number of decimals to show
-n                 <int>   ..FV.. set number of decimals to show

rgbtestsrc AVOptions:
-size              <image_size> ..FV.. set video size
-s                 <image_size> ..FV.. set video size
-rate              <string> ..FV.. set video rate
-r                 <string> ..FV.. set video rate
-duration          <string> ..FV.. set video duration
-d                 <string> ..FV.. set video duration
-sar               <rational> ..FV.. set video sample aspect ratio
-color             <string> ..FV.. set color
-c                 <string> ..FV.. set color
-decimals          <int>   ..FV.. set number of decimals to show
-n                 <int>   ..FV.. set number of decimals to show

smptebars AVOptions:
-size              <image_size> ..FV.. set video size
-s                 <image_size> ..FV.. set video size
-rate              <string> ..FV.. set video rate
-r                 <string> ..FV.. set video rate
-duration          <string> ..FV.. set video duration
-d                 <string> ..FV.. set video duration
-sar               <rational> ..FV.. set video sample aspect ratio
-color             <string> ..FV.. set color
-c                 <string> ..FV.. set color
-decimals          <int>   ..FV.. set number of decimals to show
-n                 <int>   ..FV.. set number of decimals to show

testsrc AVOptions:
-size              <image_size> ..FV.. set video size
-s                 <image_size> ..FV.. set video size
-rate              <string> ..FV.. set video rate
-r                 <string> ..FV.. set video rate
-duration          <string> ..FV.. set video duration
-d                 <string> ..FV.. set video duration
-sar               <rational> ..FV.. set video sample aspect ratio
-color             <string> ..FV.. set color
-c                 <string> ..FV.. set color
-decimals          <int>   ..FV.. set number of decimals to show
-n                 <int>   ..FV.. set number of decimals to show

concat AVOptions:
-n                 <int>   ..FVA. specify the number of segments
-v                 <int>   ..FV.. specify the number of video streams
-a                 <int>   ..F.A. specify the number of audio streams
-unsafe            <int>   ..F.A. enable unsafe mode

showspectrum AVOptions:
-size              <image_size> ..FV.. set video size
-s                 <image_size> ..FV.. set video size
-slide             <int>   ..FV.. set sliding mode

showwaves AVOptions:
-rate              <string> ..FV.. set video rate
-r                 <string> ..FV.. set video rate
-size              <image_size> ..FV.. set video size
-s                 <image_size> ..FV.. set video size
-n                 <int>   ..FV.. set how many samples to show in the same point

amovie AVOptions:
-format_name       <string> ..F... set format name
-f                 <string> ..F... set format name
-streams           <string> ..F... set streams
-s                 <string> ..F... set streams
-si                <int>   ..F... set stream index
-stream_index      <int>   ..F... set stream index
-seek_point        <double> ..F... set seekpoint (seconds)
-sp                <double> ..F... set seekpoint (seconds)
-loop              <int>   ..F... set loop count

movie AVOptions:
-format_name       <string> ..F... set format name
-f                 <string> ..F... set format name
-streams           <string> ..F... set streams
-s                 <string> ..F... set streams
-si                <int>   ..F... set stream index
-stream_index      <int>   ..F... set stream index
-seek_point        <double> ..F... set seekpoint (seconds)
-sp                <double> ..F... set seekpoint (seconds)
-loop              <int>   ..F... set loop count

buffer AVOptions:
-time_base         <rational> ..FV..
-frame_rate        <rational> ..FV..
-video_size        <image_size> ..FV..
-pix_fmt           <pix_fmt> ..FV..
-pixel_aspect      <rational> ..FV..
-sws_param         <string> ..FV..

abuffer AVOptions:
-time_base         <rational> ..F.A.
-sample_rate       <int>   ..F.A.
-sample_fmt        <string> ..F.A.
-channel_layout    <string> ..F.A.

