How to lower down Reference from any video ?

[tiger]

this is video for example:

General
Unique ID : 171663621017637616988851290556811523488 (0x812535F7830847AE80B33CE2435535A0)
Complete name : F:\***** 200* 1080p BluRay DD5.1 2Audio x264-HDS.mkv
Format : Matroska
Format version : Version 4
File size : 16.8 GiB
Duration : 2 h 34 min
Overall bit rate : 15.6 Mb/s
Movie name : ******* 200*~lee911214 @ HDS
Encoded date : UTC 2015-08-27 14:35:51
Writing application : mkvmerge v8.1.0 ('Psychedelic Postcard') 64bit
Writing library : libebml v1.3.1 + libmatroska v1.4.2

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings : 6 Ref Frames
Format settings, CABAC : No
Format settings, Reference : 6 frames
Codec ID : V_MPEG4/ISO/AVC
Duration : 2 h 34 min
Bit rate : 14.0 Mb/s
Width : 1 920 pixels
Height : 792 pixels
Display aspect ratio : 2.40:1
Frame rate mode : Constant
Frame rate : 23.976 (24000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.385
Stream size : 15.1 GiB (90%)
Title : ******* 200* 1080p BluRay DD5.1 2Audio x264-HDS
Writing library : x264 core 148 r2574+50 7a3757d [8-bit@all X86_64]
Encoding settings : cabac=0 / ref=6 / deblock=1:-3:-3 / analyse=0x3:0x113 / me=umh / subme=10 / psy=1 / fade_compensate=0.00 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=12 / lookahead_threads=1 / sliced_threads=0 / nr=0 / decimate=0 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / fgo=0 / bframes=8 / b_pyramid=2 / b_adapt=1 / b_bias=0 / direct=1 / weightb=1 / open_gop=0 / weightp=2 / keyint=250 / keyint_min=23 / scenecut=40 / intra_refresh=0 / rc_lookahead=50 / rc=crf / mbtree=1 / crf=15.7000 / qcomp=0.60 / qpmin=0:0:0 / qpmax=69:69:69 / qpstep=4 / ip_ratio=1.20 / aq=4:0.80 / aq-sensitivity=10.00 / aq-factor=1.00:1.00:1.00 / aq2=0 / aq3=0
Language : English
Default : Yes
Forced : No

Audio #1
ID : 3
Format : AC-3
Format/Info : Audio Coding 3
Commercial name : Dolby Digital
Codec ID : A_AC3
Duration : 2 h 34 min
Bit rate mode : Constant
Bit rate : 640 kb/s
Channel(s) : 6 channels
Channel layout : L R C LFE Ls Rs
Sampling rate : 48.0 kHz
Frame rate : 31.250 FPS (1536 SPF)
Bit depth : 16 bits
Compression mode : Lossy
Stream size : 706 MiB (4%)
Language : English
Service kind : Complete Main
Default : No
Forced : No

Audio #2
ID : 4
Format : AC-3
Format/Info : Audio Coding 3
Commercial name : Dolby Digital
Codec ID : A_AC3
Duration : 2 h 34 min
Bit rate mode : Constant
Bit rate : 640 kb/s
Channel(s) : 6 channels
Channel layout : L R C LFE Ls Rs
Sampling rate : 48.0 kHz
Frame rate : 31.250 FPS (1536 SPF)
Bit depth : 16 bits
Compression mode : Lossy
Stream size : 706 MiB (4%)
Language : Chinese
Service kind : Complete Main
Default : Yes
Forced : No

Text
ID : 2
Format : ASS
Codec ID : S_TEXT/ASS
Codec ID/Info : Advanced Sub Station Alpha
Compression mode : Lossless
Title : 中英双语
Language : Chinese
Default : Yes
Forced : Yes

I want to play this type of files in led tv via USB, without any Android Boxes or Laptop/Notebook

Here in this video is:
Format settings : 6 Ref Frames
Format settings, Reference : 6 frames

How to convert/change Ref 6 to 4 or 5

[Ant_G]

not sure why you need or want to change it, but on ffmpeg re-encode its

-x264-params ref=4

long encoding time though
pretty sure that file should easily played by default

[tiger]

not sure why you need or want to change it, but on ffmpeg re-encode its

-x264-params ref=4

long encoding time though
pretty sure that file should easily played by default

reason is that i have heard, led tv has strict settings and they can not play ref 6, they can play ref 5 or below...

i had tested, led tv can not play above 4.1, only play 4.1 or below...

but not tested ref 6, i am downloading some content and want to play on led tv...

thanks for your guidence

[tiger]

not sure why you need or want to change it, but on ffmpeg re-encode its

-x264-params ref=4

long encoding time though
pretty sure that file should easily played by default

sir, can you tell me how to load file and use this command ?

i downloaded latest version of ffmpeg ,
extracted zip/rar folder, and then rename the folder ffmpeg,
moved all files from bin folder to ffmpeg

i copied my video file 1.mkv in ffmpeg folder too


[Attachment 50220 - Click to enlarge]

then i opened cmd with administrator rights,

then on cmd, i use these commands there

c:
c:\> {now i am in c drive}
c:\> cd ffmpeg

c:\>ffmpeg {now i am in ffmpeg folder}

c:\>ffmpeg> ffmpeg.exe {i used this command to run ffmpeg.exe}


cmd shows this to me


[Attachment 50221 - Click to enlarge]

if i am correctly using ffmpeg, please tell me with details, how to load my file, for example 1.mkv there and change reference from 6 to 4 or 5 ?
how to use your command ?

-x264-params ref=4

[Ant_G]

ffmpeg -i "your/input/path/file/1.mkv" -c:v libx264 -x264-params ref=4 "output/path/file/new 1.mkv"

official documentation for this
http://ffmpeg.org/ffmpeg-all.html

guide
https://trac.ffmpeg.org/wiki/Encode/H.264

"how to batch"
https://forum.videohelp.com/threads/356314-How-to-batch-convert-multiplex-any-files-with-ffmpeg

[tiger]

thank you very much