Opened 2 months ago

Closed 2 months ago

Last modified 2 months ago

#8448 closed defect (duplicate)

timestamp issue muxing raw .264 into .mkv/.m2ts

Reported by: Selur Owned by:
Priority: normal Component: undetermined
Version: unspecified Keywords:
Cc: Blocked By:
Blocking: Reproduced by developer: no
Analyzed by developer: no

Description

Summary of the bug:
Muxing raw H264 content to mkv fails.

How to reproduce:

  1. Use Sample_7Ch-001.mkv (https://drive.google.com/open?id=17GvV7mOGPaLMaOmJuyZv7AfhRsdrBM-D)

and

ffmpeg -y -i "C:\Users\Selur\Desktop\Sample_7Ch-001.mkv" -map 0:0 -vcodec copy -an -sn  -map_metadata -1 -bsf:v h264_mp4toannexb,filter_units=remove_types=6 "E:\Output\Sample_7Ch-001_11_35_02_4510_01.264"

to extract the raw video stream.
This works fine:

ffmpeg version N-95921-g8067c0c2eb-ge5db2e96c0+3 Copyright (c) 2000-2019 the FFmpeg developers
  built with gcc 9.2.0 (Rev2, Built by MSYS2 project)
  configuration:  --disable-autodetect --enable-amf --enable-bzlib --enable-cuda --enable-cuvid --enable-d3d11va --enable-dxva2 --enable-iconv --enable-lzma --enable-nvenc --enable-zlib --enable-sdl2 --enable-ffnvcodec --enable-nvdec --enable-cuda-llvm --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libdav1d --disable-debug --enable-fontconfig --enable-libass --enable-libbluray --enable-libfreetype --enable-libmfx --enable-libmysofa --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libwavpack --enable-libwebp --enable-libxml2 --enable-libzimg --enable-libshine --enable-gpl --enable-avisynth --enable-libxvid --enable-libaom --enable-libopenmpt --enable-version3 --enable-libsvthevc --enable-libkvazaar --enable-libxavs --enable-libzmq --enable-libvmaf --enable-vapoursynth --enable-librav1e --enable-mbedtls --extra-cflags=-DLIBTWOLAME_STATIC --extra-libs=-lstdc++ --extra-cflags=-DZMQ_STATIC --extra-cflags=-DLIBXML_STATIC --extra-libs=-liconv --disable-w32threads --extra-cflags=-DKVZ_STATIC_LIB
  libavutil      56. 36.101 / 56. 36.101
  libavcodec     58. 64.101 / 58. 64.101
  libavformat    58. 35.100 / 58. 35.100
  libavdevice    58.  9.101 / 58.  9.101
  libavfilter     7. 67.100 /  7. 67.100
  libswscale      5.  6.100 /  5.  6.100
  libswresample   3.  6.100 /  3.  6.100
  libpostproc    55.  6.100 / 55.  6.100
Input #0, matroska,webm, from 'C:\Users\Selur\Desktop\Sample_7Ch-001.mkv':
  Metadata:
    encoder         : libebml v1.3.10 + libmatroska v1.5.2
    creation_time   : 2019-12-28T21:56:35.000000Z
  Duration: 00:01:02.32, start: 0.000000, bitrate: 13685 kb/s
    Stream #0:0: Video: h264 (High), yuv420p(progressive), 1920x1080 [SAR 1:1 DAR 16:9], 23.98 fps, 23.98 tbr, 1k tbn, 47.95 tbc (default)
    Metadata:
      BPS-eng         : 9770973
      DURATION-eng    : 00:01:02.271000000
      NUMBER_OF_FRAMES-eng: 1493
      NUMBER_OF_BYTES-eng: 76056040
      _STATISTICS_WRITING_APP-eng: mkvmerge v41.0.0.27 ('Smarra') 64-bit
      _STATISTICS_WRITING_DATE_UTC-eng: 2019-12-28 21:56:35
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
    Stream #0:1(eng): Audio: dts (DTS-HD MA), 48000 Hz, 6.1, s32p (24 bit) (default)
    Metadata:
      BPS-eng         : 3917291
      DURATION-eng    : 00:01:02.315000000
      NUMBER_OF_FRAMES-eng: 5842
      NUMBER_OF_BYTES-eng: 30513256
      _STATISTICS_WRITING_APP-eng: mkvmerge v41.0.0.27 ('Smarra') 64-bit
      _STATISTICS_WRITING_DATE_UTC-eng: 2019-12-28 21:56:35
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
Output #0, h264, to 'E:\Output\Sample_7Ch-001_11_35_02_4510_01.264':
  Metadata:
    encoder         : Lavf58.35.100
    Stream #0:0: Video: h264 (High), yuv420p(progressive), 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 23.98 fps, 23.98 tbr, 23.98 tbn, 23.98 tbc (default)
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
Press [q] to stop, [?] for help
frame= 1493 fps=1406 q=-1.0 Lsize=   74241kB time=00:01:02.22 bitrate=9773.3kbits/s speed=58.6x
video:74241kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.000000%
  1. Use
    ffmpeg -y  -r 24000/1001 -i "Sample_7Ch-001_11_35_02_4510_01.264" -vcodec copy -map 0:0 -bsf:v h264_mp4toannexb -vtag avc1 -aspect 177778:100000 -r 24000/1001 "Sample_7Ch.mkv"
    

to multiplex the raw h264 video into an mkv file.

For me this fails with:

ffmpeg -y  -r 24000/1001 -i "E:\Output\Sample_7Ch-001_11_35_02_4510_01.264" -vcodec copy -map 0:0 -bsf:v h264_mp4toannexb -vtag avc1 -aspect 177778:100000 -r 24000/1001 "E:\Output\Sample_7Ch.mkv"
ffmpeg version N-95921-g8067c0c2eb-ge5db2e96c0+3 Copyright (c) 2000-2019 the FFmpeg developers
  built with gcc 9.2.0 (Rev2, Built by MSYS2 project)
  configuration:  --disable-autodetect --enable-amf --enable-bzlib --enable-cuda --enable-cuvid --enable-d3d11va --enable-dxva2 --enable-iconv --enable-lzma --enable-nvenc --enable-zlib --enable-sdl2 --enable-ffnvcodec --enable-nvdec --enable-cuda-llvm --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libdav1d --disable-debug --enable-fontconfig --enable-libass --enable-libbluray --enable-libfreetype --enable-libmfx --enable-libmysofa --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libwavpack --enable-libwebp --enable-libxml2 --enable-libzimg --enable-libshine --enable-gpl --enable-avisynth --enable-libxvid --enable-libaom --enable-libopenmpt --enable-version3 --enable-libsvthevc --enable-libkvazaar --enable-libxavs --enable-libzmq --enable-libvmaf --enable-vapoursynth --enable-librav1e --enable-mbedtls --extra-cflags=-DLIBTWOLAME_STATIC --extra-libs=-lstdc++ --extra-cflags=-DZMQ_STATIC --extra-cflags=-DLIBXML_STATIC --extra-libs=-liconv --disable-w32threads --extra-cflags=-DKVZ_STATIC_LIB
  libavutil      56. 36.101 / 56. 36.101
  libavcodec     58. 64.101 / 58. 64.101
  libavformat    58. 35.100 / 58. 35.100
  libavdevice    58.  9.101 / 58.  9.101
  libavfilter     7. 67.100 /  7. 67.100
  libswscale      5.  6.100 /  5.  6.100
  libswresample   3.  6.100 /  3.  6.100
  libpostproc    55.  6.100 / 55.  6.100
[h264 @ 000001f6fed92f00] Stream #0: not enough frames to estimate rate; consider increasing probesize
Input #0, h264, from 'E:\Output\Sample_7Ch-001_11_35_02_4510_01.264':
  Duration: N/A, bitrate: N/A
    Stream #0:0: Video: h264 (High), yuv420p(progressive), 1920x1080 [SAR 1:1 DAR 16:9], 23.98 fps, 23.98 tbr, 1200k tbn, 47.95 tbc
Overriding aspect ratio with stream copy may produce invalid files
Output #0, matroska, to 'E:\Output\Sample_7Ch.mkv':
  Metadata:
    encoder         : Lavf58.35.100
    Stream #0:0: Video: h264 (High) (avc1 / 0x31637661), yuv420p(progressive), 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 23.98 fps, 23.98 tbr, 1k tbn, 23.98 tbc
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
Press [q] to stop, [?] for help
[matroska @ 000001f6ff38f040] Timestamps are unset in a packet for stream 0. This is deprecated and will stop working in the future. Fix your code to set the timestamps properly
[matroska @ 000001f6ff38f040] Can't write packet with unknown timestamp
av_interleaved_write_frame(): Invalid argument
frame=    1 fps=0.0 q=-1.0 Lsize=       1kB time=-00:00:00.04 bitrate=N/A speed=N/A
video:1kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown

Note:
I also tried .m2ts as output which fails the same way, using mp4 as output container on the other hand complains, but doesn't abort:

ffmpeg version N-95921-g8067c0c2eb-ge5db2e96c0+3 Copyright (c) 2000-2019 the FFmpeg developers
  built with gcc 9.2.0 (Rev2, Built by MSYS2 project)
  configuration:  --disable-autodetect --enable-amf --enable-bzlib --enable-cuda --enable-cuvid --enable-d3d11va --enable-dxva2 --enable-iconv --enable-lzma --enable-nvenc --enable-zlib --enable-sdl2 --enable-ffnvcodec --enable-nvdec --enable-cuda-llvm --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libdav1d --disable-debug --enable-fontconfig --enable-libass --enable-libbluray --enable-libfreetype --enable-libmfx --enable-libmysofa --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libwavpack --enable-libwebp --enable-libxml2 --enable-libzimg --enable-libshine --enable-gpl --enable-avisynth --enable-libxvid --enable-libaom --enable-libopenmpt --enable-version3 --enable-libsvthevc --enable-libkvazaar --enable-libxavs --enable-libzmq --enable-libvmaf --enable-vapoursynth --enable-librav1e --enable-mbedtls --extra-cflags=-DLIBTWOLAME_STATIC --extra-libs=-lstdc++ --extra-cflags=-DZMQ_STATIC --extra-cflags=-DLIBXML_STATIC --extra-libs=-liconv --disable-w32threads --extra-cflags=-DKVZ_STATIC_LIB
  libavutil      56. 36.101 / 56. 36.101
  libavcodec     58. 64.101 / 58. 64.101
  libavformat    58. 35.100 / 58. 35.100
  libavdevice    58.  9.101 / 58.  9.101
  libavfilter     7. 67.100 /  7. 67.100
  libswscale      5.  6.100 /  5.  6.100
  libswresample   3.  6.100 /  3.  6.100
  libpostproc    55.  6.100 / 55.  6.100
[h264 @ 000001d96c622f00] Stream #0: not enough frames to estimate rate; consider increasing probesize
Input #0, h264, from 'E:\Output\Sample_7Ch-001_11_35_02_4510_01.264':
  Duration: N/A, bitrate: N/A
    Stream #0:0: Video: h264 (High), yuv420p(progressive), 1920x1080 [SAR 1:1 DAR 16:9], 23.98 fps, 23.98 tbr, 1200k tbn, 47.95 tbc
Overriding aspect ratio with stream copy may produce invalid files
Output #0, mp4, to 'E:\Output\Sample_7Ch.mp4':
  Metadata:
    encoder         : Lavf58.35.100
    Stream #0:0: Video: h264 (High) (avc1 / 0x31637661), yuv420p(progressive), 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 23.98 fps, 23.98 tbr, 24k tbn, 23.98 tbc
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
Press [q] to stop, [?] for help
[mp4 @ 000001d96cc8f040] Timestamps are unset in a packet for stream 0. This is deprecated and will stop working in the future. Fix your code to set the timestamps properly
[mp4 @ 000001d96cc8f040] pts has no value
    Last message repeated 283 times
[mp4 @ 000001d96cc8f040] pts has no valueB time=00:00:11.76 bitrate=26210.4kbits/s speed=23.5x
    Last message repeated 309 times
[mp4 @ 000001d96cc8f040] pts has no valueB time=00:00:24.69 bitrate=18430.8kbits/s speed=24.6x
    Last message repeated 335 times
[mp4 @ 000001d96cc8f040] pts has no valueB time=00:00:38.70 bitrate=12028.5kbits/s speed=25.8x
    Last message repeated 339 times
[mp4 @ 000001d96cc8f040] pts has no valueB time=00:00:52.88 bitrate=8803.2kbits/s speed=26.4x
    Last message repeated 222 times
frame= 1493 fps=630 q=-1.0 Lsize=   74253kB time=00:01:02.18 bitrate=9781.4kbits/s speed=26.2x
video:74241kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.016181%

Since neither adding '-r 24000/1001' nor additionally adding '-fflags +genpts' and muxing the files using mkvmerge works fine I guess this is either a bug in ffmpeg or I need some help since I don't know how to do this properly.
=> If this is not a bug please tell me how to multiplex raw H.264 to mkv and m2ts.

Change History (7)

comment:1 Changed 2 months ago by pdr0

For input elementary streams you need to specify format as an input option (-f before the -i)

eg.
-f h264 for AVC streams

comment:2 Changed 2 months ago by Selur

adding '-f h264' and using:

ffmpeg -y -f h264 -r 24000/1001 -fflags +genpts -i "E:\Output\Sample_7Ch-001_11_35_02_4510_01.264" -vcodec copy -map 0:0 -bsf:v h264_mp4toannexb -vtag avc1 -aspect 177778:100000 -r 24000/1001 "E:\Output\Sample_7Ch.mkv"

doesnt't change a thing:

ffmpeg -y -f h264 -r 24000/1001 -fflags +genpts -i "E:\Output\Sample_7Ch-001_11_35_02_4510_01.264" -vcodec copy -map 0:0 -bsf:v h264_mp4toannexb -vtag avc1 -aspect 177778:100000 -r 24000/1001 "E:\Output\Sample_7Ch.mkv"
ffmpeg version N-95921-g8067c0c2eb-ge5db2e96c0+3 Copyright (c) 2000-2019 the FFmpeg developers
  built with gcc 9.2.0 (Rev2, Built by MSYS2 project)
  configuration:  --disable-autodetect --enable-amf --enable-bzlib --enable-cuda --enable-cuvid --enable-d3d11va --enable-dxva2 --enable-iconv --enable-lzma --enable-nvenc --enable-zlib --enable-sdl2 --enable-ffnvcodec --enable-nvdec --enable-cuda-llvm --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libdav1d --disable-debug --enable-fontconfig --enable-libass --enable-libbluray --enable-libfreetype --enable-libmfx --enable-libmysofa --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libwavpack --enable-libwebp --enable-libxml2 --enable-libzimg --enable-libshine --enable-gpl --enable-avisynth --enable-libxvid --enable-libaom --enable-libopenmpt --enable-version3 --enable-libsvthevc --enable-libkvazaar --enable-libxavs --enable-libzmq --enable-libvmaf --enable-vapoursynth --enable-librav1e --enable-mbedtls --extra-cflags=-DLIBTWOLAME_STATIC --extra-libs=-lstdc++ --extra-cflags=-DZMQ_STATIC --extra-cflags=-DLIBXML_STATIC --extra-libs=-liconv --disable-w32threads --extra-cflags=-DKVZ_STATIC_LIB
  libavutil      56. 36.101 / 56. 36.101
  libavcodec     58. 64.101 / 58. 64.101
  libavformat    58. 35.100 / 58. 35.100
  libavdevice    58.  9.101 / 58.  9.101
  libavfilter     7. 67.100 /  7. 67.100
  libswscale      5.  6.100 /  5.  6.100
  libswresample   3.  6.100 /  3.  6.100
  libpostproc    55.  6.100 / 55.  6.100
[h264 @ 000002464f627fc0] Stream #0: not enough frames to estimate rate; consider increasing probesize
Input #0, h264, from 'E:\Output\Sample_7Ch-001_11_35_02_4510_01.264':
  Duration: N/A, bitrate: N/A
    Stream #0:0: Video: h264 (High), yuv420p(progressive), 1920x1080 [SAR 1:1 DAR 16:9], 23.98 fps, 23.98 tbr, 1200k tbn, 47.95 tbc
Overriding aspect ratio with stream copy may produce invalid files
Output #0, matroska, to 'E:\Output\Sample_7Ch.mkv':
  Metadata:
    encoder         : Lavf58.35.100
    Stream #0:0: Video: h264 (High) (avc1 / 0x31637661), yuv420p(progressive), 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 23.98 fps, 23.98 tbr, 1k tbn, 23.98 tbc
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
Press [q] to stop, [?] for help
[matroska @ 0000024651510040] Timestamps are unset in a packet for stream 0. This is deprecated and will stop working in the future. Fix your code to set the timestamps properly
[matroska @ 0000024651510040] Can't write packet with unknown timestamp
av_interleaved_write_frame(): Invalid argument
frame=    1 fps=0.0 q=-1.0 Lsize=       1kB time=-00:00:00.04 bitrate=N/A speed=N/A
video:1kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
Conversion failed!

muxing still fails with the same messages.

comment:3 Changed 2 months ago by pdr0

It might be related to 1598
https://trac.ffmpeg.org/ticket/1598

comment:4 Changed 2 months ago by mkver

  • Resolution set to duplicate
  • Status changed from new to closed

Yeah, H.264 timestamp generation is a desideratum for ages.
Btw: There is no need to use the h264_mp4toannexb filter if your input is already an elementary H.264 stream (because that is already Annex B).

comment:5 Changed 2 months ago by Selur

  • Keywords raw removed

Just for completeness and may be it helps with finding and fixing the bug.

Even if I don't feed ffmpeg with raw H.264 and use:

ffmpeg -y  -r 24000/1001 -i "E:\Output\Sample_7Ch_videoOnly.mkv" -i "E:\Output\audioOnly.dts" -vcodec copy -acodec copy -map 0:0 -map 1:0  -aspect 177778:100000 -r 24000/1001 "E:\Output\Sample_7Ch-001.mkv"

it fails with:

ffmpeg version N-95921-g8067c0c2eb-ge5db2e96c0+3 Copyright (c) 2000-2019 the FFmpeg developers
  built with gcc 9.2.0 (Rev2, Built by MSYS2 project)
  configuration:  --disable-autodetect --enable-amf --enable-bzlib --enable-cuda --enable-cuvid --enable-d3d11va --enable-dxva2 --enable-iconv --enable-lzma --enable-nvenc --enable-zlib --enable-sdl2 --enable-ffnvcodec --enable-nvdec --enable-cuda-llvm --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libdav1d --disable-debug --enable-fontconfig --enable-libass --enable-libbluray --enable-libfreetype --enable-libmfx --enable-libmysofa --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libwavpack --enable-libwebp --enable-libxml2 --enable-libzimg --enable-libshine --enable-gpl --enable-avisynth --enable-libxvid --enable-libaom --enable-libopenmpt --enable-version3 --enable-libsvthevc --enable-libkvazaar --enable-libxavs --enable-libzmq --enable-libvmaf --enable-vapoursynth --enable-librav1e --enable-mbedtls --extra-cflags=-DLIBTWOLAME_STATIC --extra-libs=-lstdc++ --extra-cflags=-DZMQ_STATIC --extra-cflags=-DLIBXML_STATIC --extra-libs=-liconv --disable-w32threads --extra-cflags=-DKVZ_STATIC_LIB
  libavutil      56. 36.101 / 56. 36.101
  libavcodec     58. 64.101 / 58. 64.101
  libavformat    58. 35.100 / 58. 35.100
  libavdevice    58.  9.101 / 58.  9.101
  libavfilter     7. 67.100 /  7. 67.100
  libswscale      5.  6.100 /  5.  6.100
  libswresample   3.  6.100 /  3.  6.100
  libpostproc    55.  6.100 / 55.  6.100
[h264 @ 00000243dd0438c0] Stream #0: not enough frames to estimate rate; consider increasing probesize
Input #0, h264, from 'E:\Output\Sample_7Ch_videoOnly.mkv':
  Duration: N/A, bitrate: N/A
    Stream #0:0: Video: h264 (High), yuv420p(progressive), 1920x1080 [SAR 1:1 DAR 16:9], 23.98 fps, 23.98 tbr, 1200k tbn, 47.95 tbc
[dts @ 00000243dd6dcf40] Estimating duration from bitrate, this may be inaccurate
Input #1, dts, from 'E:\Output\audioOnly.dts':
  Duration: 00:01:01.24, start: 0.000000, bitrate: 1536 kb/s
    Stream #1:0: Audio: dts (DTS-ES), 48000 Hz, 6.1, fltp, 1536 kb/s
Overriding aspect ratio with stream copy may produce invalid files
Output #0, matroska, to 'E:\Output\Sample_7Ch-001.mkv':
  Metadata:
    encoder         : Lavf58.35.100
    Stream #0:0: Video: h264 (High) (H264 / 0x34363248), yuv420p(progressive), 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 23.98 fps, 23.98 tbr, 1k tbn, 23.98 tbc
    Stream #0:1: Audio: dts (DTS-ES) ([1] [0][0] / 0x2001), 48000 Hz, 6.1, fltp, 1536 kb/s
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
  Stream #1:0 -> #0:1 (copy)
Press [q] to stop, [?] for help
[matroska @ 00000243dd04b700] Timestamps are unset in a packet for stream 0. This is deprecated and will stop working in the future. Fix your code to set the timestamps properly
[matroska @ 00000243dd04b700] Can't write packet with unknown timestamp
av_interleaved_write_frame(): Invalid argument
frame=    1 fps=0.0 q=-1.0 Lsize=       3kB time=00:00:00.00 bitrate=N/A speed=   0x
video:1kB audio:2kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
Conversion failed!

Shouldn't the .mkv have the time codes needed and shouldn't ffmpeg be able to copy those and if mkv doesn't have the needed time codes, why does ffmpeg need them?

Sample_7Ch_videoOnly.mkv was created with mkvextract using:

mkvextract --ui-language en tracks "C:\Users\Selur\Desktop\Sample_7Ch-001.mkv" 0:"E:\Output\Sample_7Ch_videoOnly.mkv"

Funny thing is if I use FFmpeg for the extraction:

ffmpeg -y -threads 8 -i "C:\Users\Selur\Desktop\Sample_7Ch-001.mkv" -sn -vcodec copy -map_metadata -1 "E:\Output\Sample_7Ch-Sample_7Ch_videoOnly.mkv" -map 0:1 -sn -bsf:a dca_core -acodec copy -map_metadata -1 "E:\Output\audioOnly.dts"

the previous muxing call works.

comment:6 Changed 2 months ago by Selur

forget that,

mkvextract --ui-language en tracks "C:\Users\Selur\Desktop\Sample_7Ch-001.mkv" 0:"E:\Output\Sample_7Ch_videoOnly.mkv"

does not create an mkv it creates a H264 raw with .mkv extension :/

comment:7 Changed 2 months ago by cehoyos

  • Component changed from ffmpeg to undetermined
  • Keywords 264 mux removed
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