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• ffmpeg concat : 2nd video stream frozen, no image

  31 juillet 2016, par Azevedo

  I’m trying to concatenate two video streams with the same econding into one :

  ffmpeg -y -f concat -i parts.txt -c copy join.mkv

  parts.txt

  file part1.mkv
  
  file part2.mkv

  ffmpeg will concatenate them but the playback (any player) gives a still image if the playing position corresponds to the 2nd part.
  I tried to switch part1.mkv and part2.mkv to see the results.
  The 1st part (whichever part1 or part2) will play normally but when I seek the playback to the time corresponding the 2nd part the image won’t show, only the audio plays.

  
  
  What happens if i seek the playback to the 2nd part :
  

  UPDATE :
  FULL CONSOLE OUTPUT FOR ffmpeg -y -f concat -i parts.txt -c copy episode.mkv

  ffmpeg version N-81118-gfb91850 Copyright (c) 2000-2016 the FFmpeg developers
  
    built with gcc 5.4.0 (GCC)
  
    configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-bzlib --enable-libebur128 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-decklink --enable-zlib
  
    libavutil      55. 28.100 / 55. 28.100
  
    libavcodec     57. 50.100 / 57. 50.100
  
    libavformat    57. 44.100 / 57. 44.100
  
    libavdevice    57.  0.102 / 57.  0.102
  
    libavfilter     6. 49.100 /  6. 49.100
  
    libswscale      4.  1.100 /  4.  1.100
  
    libswresample   2.  1.100 /  2.  1.100
  
    libpostproc    54.  0.100 / 54.  0.100
  
  [matroska,webm @ 000000000242bd40] Auto-inserting h264_mp4toannexb bitstream filter
  
  Input #0, concat, from 'parts.txt':
  
    Duration: N/A, start: 0.000000, bitrate: N/A
  
      Stream #0:0: Video: h264 (High), yuv420p(tv, bt709), 1280x720, SAR 1:1 DAR 16:9, 23.97 fps, 23.97 tbr, 1k tbn, 47.95 tbc
  
      Metadata:
  
        BPS             : 1023638
  
        BPS-eng         : 1023638
  
        _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
  
        DURATION-eng    : 00:23:17.980000000
  
        NUMBER_OF_FRAMES: 33518
  
        NUMBER_OF_FRAMES-eng: 33518
  
        NUMBER_OF_BYTES : 178878340
  
        NUMBER_OF_BYTES-eng: 178878340
  
        _STATISTICS_WRITING_APP: mkvmerge v9.3.1 ('Mask Machine') 64bit
  
        _STATISTICS_WRITING_APP-eng: mkvmerge v9.3.1 ('Mask Machine') 64bit
  
        _STATISTICS_WRITING_DATE_UTC: 2016-07-30 17:28:29
  
        _STATISTICS_WRITING_DATE_UTC-eng: 2016-07-30 17:28:29
  
        _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
  
        DURATION        : 00:22:13.164000000
  
  [matroska @ 0000000000e7c920] Using AVStream.codec to pass codec parameters to muxers is deprecated, use AVStream.codecpar instead.
  
  Output #0, matroska, to 'episode.mkv':
  
    Metadata:
  
      encoder         : Lavf57.44.100
  
      Stream #0:0: Video: h264 (High) (H264 / 0x34363248), yuv420p(tv, bt709), 1280x720 [SAR 1:1 DAR 16:9], q=2-31, 23.97 fps, 23.97 tbr, 1k tbn, 1k tbc
  
      Metadata:
  
        BPS             : 1023638
  
        BPS-eng         : 1023638
  
        _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
  
        DURATION-eng    : 00:23:17.980000000
  
        NUMBER_OF_FRAMES: 33518
  
        NUMBER_OF_FRAMES-eng: 33518
  
        NUMBER_OF_BYTES : 178878340
  
        NUMBER_OF_BYTES-eng: 178878340
  
        _STATISTICS_WRITING_APP: mkvmerge v9.3.1 ('Mask Machine') 64bit
  
        _STATISTICS_WRITING_APP-eng: mkvmerge v9.3.1 ('Mask Machine') 64bit
  
        _STATISTICS_WRITING_DATE_UTC: 2016-07-30 17:28:29
  
        _STATISTICS_WRITING_DATE_UTC-eng: 2016-07-30 17:28:29
  
        _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
  
        DURATION        : 00:22:13.164000000
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (copy)
  
  Press [q] to stop, [?] for help
  
  [matroska,webm @ 0000000002605dc0] Auto-inserting h264_mp4toannexb bitstream filterpeed=1.87e+003x
  
  frame=56417 fps=47467 q=-1.0 Lsize=  304604kB time=00:39:13.05 bitrate=1060.5kbits/s speed=1.98e+003x
  
  video:304191kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.135798%

• Revision 198fa6d0a0 : Add Neon horizontal and vertical vp9_mbloop_filter - The vp9 mbfilter C code wi

  1er juillet 2013, par Frank Galligan

  Changed Paths :
   Modify /vp9/common/arm/neon/vp9_loopfilter_neon.asm

  
   Modify /vp9/common/vp9_rtcd_defs.sh

  
  
  Add Neon horizontal and vertical vp9_mbloop_filter

   The vp9 mbfilter C code will branch on flat and mask. This CL
  will perform both branches and combine the data. A later CL will
  perform a check to see if all patch will take one branch.
   These functions are about 1.75 times faster than the C code on
  Nexus 7.

  PS #3
   Changed all functions to dub limit, blimit, and thresh from
  vld dx[], freeing up r4-r6.
   Changed code to use vbif to reduce one instruction and free
  up a d register.

  Change-Id : I028dae0e434dc9891c3677bdb182e201ffb04777

• swresample/rematrix : fix typo in clean_layout()

  28 mars 2022, par James Almer

  swresample/rematrix : fix typo in clean_layout()
  av_channel_layout_index_from_channel() takes an AVChannel value, not a mask.
  Signed-off-by : James Almer <jamrial@gmail.com>
  

  • [DH] libswresample/rematrix.c