Hi all,
I need the FFMPEG command which could convert a 1080p to 1080i (both top bottom and bottom up) for H264 codec.
Please help.
Thank you
Nitin
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Progressive video content will stay progressive video content. But you can tell the encoder to use the (adaptively-ignorant "fake") interlaced encoding mode.
For a standalone x264 encoder, that would probably be --fake-interlaced. Unfortunately, I don't know how to pass this libx264 encoder option through ffmpeg; you might try: -x264opts "fake-interlaced=1" (no guarantee) -
video filter in fact
http://ffmpeg.org/ffmpeg-all.html#interlace
Code:ffmpeg -i source -vf "interlace=lowpass=0:scan=even(tff)odd(bff)"
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@ pandy:
I believe the desired result is not a really interlaced video, but rather an "interlaced flagged, but effectively progressive encoded" video which is Blu-ray compatible and supported by x264 using MBAFF interlacing mode and progressive encoding for all MBs.
Provided that I understood nitinsagar22 correctly... -
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Thanks @Pandy.
Yes, i was willing to convert progressive to interlaced both in tff and bff.
I have such requirement for one of my projects.
Will try this code, is there any thread where i could find some advanced commands in ffmpeg for libx264.
Also, any idea when will x265 encoder be available in ffmpeg?
Thanks -
Hi,
Small confusion here, the command works perfectly fine for me.
But the problem is if i parse the generated content on a mediainfo like tool. Its still showing the scan type to be progressive whereas i was expecting interlaced tff there. Any reason why is it showing so?
But the video playback is looking clearly to be like an interlaced video (checked on VLC)
Mediainfo Video info shows as below:
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L2.2
Format settings, CABAC : Yes
Format settings, ReFrames : 4 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 1mn 53s
Bit rate : 576 Kbps
Width : 640 pixels
Height : 360 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 12.000 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.209
Stream size : 7.81 MiB (85%)
Writing library : x264 core 142 r2409 d6b4e63
Thanks -
Works for me:
Code:@ffmpeg -i %1 -c:v libx264 -preset fast -profile:v high -crf 18 -x264opts "level=4.1:bitrate=1000:vbv_maxrate=4000:vbv_bufsize=3000:qpmin=4:slices=4:keyint=100:bluray-compat=1:tff=1:colorprim=bt709:transfer=bt709:colormatrix=bt709:fullrange=off:overscan=show:pic-struct:force-cfr=1:aud=1" -flags +ildct+ilme -vf "scale=out_range=auto:force_original_aspect_ratio=decrease:'if(gt(a,16/9),640,-1)':'if(gt(a,16/9),-1,360)':sws_flags=bicubic+accurate_rnd+full_chroma_inp+full_chroma_int:sws_dither=bayer,pad=640:360:(ow-iw)/2:(oh-ih)/2,setsar=sar=1/1,interlace=lowpass=0:scan=tff" -movflags faststart -shortest -f mp4 %1_i.mp4 @pause
General
Complete name : action-60fps.mp4_ti.mp4
Format : MPEG-4
Format profile : Base Media
Codec ID : isom
File size : 440 KiB
Duration : 3s 667ms
Overall bit rate mode : Variable
Overall bit rate : 983 Kbps
Writing application : Lavf55.34.100
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings, CABAC : Yes
Format settings, ReFrames : 3 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 3s 667ms
Bit rate mode : Variable
Bit rate : 1 000 Kbps
Maximum bit rate : 4 000 Kbps
Width : 640 pixels
Height : 360 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 30.000 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : MBAFF
Bits/(Pixel*Frame) : 0.145
Stream size : 438 KiB (100%)
Writing library : x264 core 142 r2389 956c8d8
Encoding settings : cabac=1 / ref=2 / deblock=1:0:0 / analyse=0x3:0x113 / me=hex / subme=6 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=3 / lookahead_threads=1 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=tff / bluray_compat=1 / constrained_intra=0 / bframes=3 / b_pyramid=1 / b_adapt=1 / b_bias=0 / direct=1 / weightb=1 / open_gop=0 / weightp=0 / keyint=100 / keyint_min=1 / scenecut=40 / intra_refresh=0 / rc_lookahead=30 / rc=abr / mbtree=1 / bitrate=1000 / ratetol=1.0 / qcomp=0.60 / qpmin=4 / qpmax=69 / qpstep=4 / vbv_maxrate=4000 / vbv_bufsize=3000 / nal_hrd=vbr / filler=0 / ip_ratio=1.40 / aq=1:1.00
Language : English
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709 -
The key here is probably using -x264opts to tell the x264 encoder library to use (either real or fake) interlaced encoding; ffmpeg options "outside libx264" won't change the resulting H.264 bitstream reliably.
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This works for me Batch convert 1080-60p MTS into 1080-60i TS. I did this as an experiment, but can't see any reason to ever do this:
Code:for %%a in ("*.mts") do "C:\FFmbc\ffmpeg" -i %%a -flags +ildct+ilme -vf interlace=lowpass=0:scan=tff -c:v libx264 -level 41 -pix_fmt yuv420p -preset medium -crf 19 -g 30 -threads 8 -x264opts bluray-compat=1:tff=1:vbv-bufsize=15000:vbv-maxrate=30000 -c:a copy -f mpegts %%~na.ts pause
General
ID : 1 (0x1)
Complete name : D:\Capture\River Winter\output.ts
Format : MPEG-TS
File size : 96.5 MiB
Duration : 39s 573ms
Overall bit rate mode : Variable
Overall bit rate : 20.5 Mbps
Video
ID : 256 (0x100)
Menu ID : 1 (0x1)
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings, CABAC : Yes
Format settings, ReFrames : 3 frames
Codec ID : 27
Duration : 39s 640ms
Bit rate mode : Variable
Bit rate : 19.2 Mbps
Maximum bit rate : 30.0 Mbps
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Variable
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : MBAFF
Stream size : 90.7 MiB (94%)
Writing library : x264 core 140 r2377 1ca7bb9
Encoding settings : cabac=1 / ref=3 / deblock=1:0:0 / analyse=0x3:0x113 / me=hex / subme=7 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=8 / lookahead_threads=1 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=tff / bluray_compat=1 / constrained_intra=0 / bframes=3 / b_pyramid=1 / b_adapt=1 / b_bias=0 / direct=1 / weightb=1 / open_gop=0 / weightp=0 / keyint=30 / keyint_min=1 / scenecut=40 / intra_refresh=0 / rc_lookahead=30 / rc=crf / mbtree=1 / crf=19.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / vbv_maxrate=30000 / vbv_bufsize=15000 / crf_max=0.0 / nal_hrd=vbr / filler=0 / ip_ratio=1.40 / aq=1:1.00
Audio
ID : 257 (0x101)
Menu ID : 1 (0x1)
Format : AC-3
Format/Info : Audio Coding 3
Mode extension : CM (complete main)
Format settings, Endianness : Big
Codec ID : 129
Duration : 39s 680ms
Bit rate mode : Constant
Bit rate : 256 Kbps
Channel count : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Bit depth : 16 bits
Compression mode : Lossy
Stream size : 1.21 MiB (1%)
Menu
ID : 4096 (0x1000)
Menu ID : 1 (0x1)
Duration : 39s 573ms
List : 256 (0x100) (AVC) / 257 (0x101) (AC-3)
Service name : Service01
Service provider : FFmpeg
Service type : digital televisionGot my retirement plans all set. Looks like I only have to work another 5 years after I die........
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