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• ffmpeg binary in osx archive shows kCMSampleBufferError_RequiredParameterMissing when app runs

  20 mars 2017, par Swati

  I have created an OSX App, bundled ffmpeg binary in it.
  When i debug my code everything works fine and ffmpeg commands execute properly via NSTask.

  However when i create archive and run the app inside the products, ffmpeg commands are not executed and i get error

  1/17/17 3:34:21.951 PM ffmpeg[2229]: [15:34:21.951] CMSampleBufferGetImageBuffer signalled err=-12731 
  
  (kCMSampleBufferError_RequiredParameterMissing) (!sbuf) at 
  
  /Library/Caches/com.apple.xbs/Sources/CoreMedia_frameworks/CoreMedia-1731.15.206/Sources
  
  /Core/FigSampleBuffer/FigSampleBuffer.c line 2394
  
  
  
    0   CoreMedia 0x00007fff86749713 CMSampleBufferGetImageBuffer + 138
  
    1   ffmpeg    0x00000001002b9714 avdevice_list_output_sinks   + 10116

  Edit :

  I tried the below mentioned way but when I try to run my app on other mac machines the error still persists

  I added Capability "App Sandbox" to my Target. Due to this an entitlements file was added in my project named Target.entitlements

  Inside this Entitlements file 2 values are added viz :

  com.apple.security.inherit >> Boolean >> YES

  App Sandbox >> Boolean >> YES
  I also added a runscript for codesign :

  codesign -f -s "Developer Certificate" --entitlements ./path/Target.entitlements  path/ffmpeg-binary-file

• ffmpeg conversion fails for 640x360 video size

  12 novembre 2015, par user3132858

  Can somebody advice how I can fix the ffmpeg error below :

  Array ( [0] => ffmpeg version 2.0.1 Copyright (c) 2000-2013 the FFmpeg developers 
  
  [1] => built on Nov 11 2015 12:17:12 with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-16) [2] 
  
  => configuration: --enable-gpl --enable-version3 --enable-shared --enable-nonfree 
  
  --enable-postproc --enable-libfaac --enable-libmp3lame --enable-libopencore-amrnb 
  
  --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis --enable-libvpx 
  
  --enable-libx264 --enable-libxvid [3] => libavutil 52. 38.100 / 52. 38.100 [4]
  
  => libavcodec 55. 18.102 / 55. 18.102 [5] => libavformat 55. 12.100 / 55. 12.100 [6] 
  
  => libavdevice 55. 3.100 / 55. 3.100 [7] => libavfilter 3. 79.101 / 3. 79.101 [8] 
  
  => libswscale 2. 3.100 / 2. 3.100 [9] => libswresample 0. 17.102 / 0. 17.102 [10] 
  
  => libpostproc 52. 3.100 / 52. 3.100 [11] => Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '3.mov': [12] 
  
  => Metadata: [13] => major_brand : qt [14] => minor_version : 537199360 [15] => compatible_brands: qt [16] 
  
  => creation_time : 2005-10-17 22:54:32 [17] => Duration: 00:01:25.50, start: 0.000000, 
  
  bitrate: 307 kb/s [18] => Stream #0:0(eng): Video: mpeg4 (Simple Profile) (mp4v / 0x7634706D), 
  
  yuv420p, 640x480 [SAR 1:1 DAR 4:3], 261 kb/s, 10 fps, 10 tbr, 3k tbn, 25 tbc [19] 
  
  => Metadata: [20] => creation_time : 2005-10-17 22:54:33 [21] => handler_name : 
  
  Apple Video Media Handler [22] => Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 
  
  32000 Hz, mono, fltp, 43 kb/s [23] => Metadata: [24] => creation_time : 2005-10-17 22:54:34 [25] 
  
  => handler_name : Apple Sound Media Handler [26] => [libx264 @ 0x19fbb00] using SAR=944/945 [27] 
  
  => [libx264 @ 0x19fbb00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX [28] 
  
  => Output #0, mp4, to '4.mp4': [29] => Metadata: [30] => major_brand : qt [31] 
  
  => minor_version : 537199360 [32] => compatible_brands: qt [33] => Stream #0:0
  
  (eng): Video: h264, yuv420p, 630x472 [SAR 944:945 DAR 4:3], q=-1--1, 900 kb/s, 90k tbn, 
  
  10 tbc [34] => Metadata: [35] => creation_time : 2005-10-17 22:54:33 [36] 
  
  => handler_name : Apple Video Media Handler [37] => Stream #0:1(eng): Audio: aac, 32000 Hz, 
  
  mono, fltp, 128 kb/s [38] => Metadata: [39] => creation_time : 2005-10-17 22:54:34 [40] 
  
  => handler_name : Apple Sound Media Handler [41] => Stream mapping: [42] 
  
  => Stream #0:0 -> #0:0 (mpeg4 -> libx264) [43] => Stream #0:1 -> #0:1 (aac -> aac) [44] 
  
  => Error while opening encoder for output stream #0:0 - maybe incorrect parameters 
  
  such as bit_rate, rate, width or height )

  This is my code :

  $width=640;
  
  $height=360;
  
  $aspect=round($width/$height, 1);
  
  
  
  $command = "/usr/bin/ffmpeg -threads 1 -y -i 3.mov -vf \"scale=min(1\,gt(iw\,".$width.")+gt(ih\,".$height.")) * (gte(a\,".$aspect.")*".$width." + \
  
  lt(a\,".$aspect.")*((".$height."*iw)/ih)) + not(min(1\,gt(iw\,".$width.")+gt(ih\,".$height.")))*iw : \
  
  min(1\,gt(iw\,".$width.")+gt(ih\,".$height.")) * (lte(a\,".$aspect.")*".$height." + \
  
  gt(a\,".$aspect.")*((".$width."*ih)/iw)) + not(min(1\,gt(iw\,".$width.")+gt(ih\,".$height.")))*ih\"  -b:v 900k -acodec aac -strict -2 -ab 96k 4.mp4 ";

  It is rather strange but when I change the width and height parameters to 300 and 200 respectively, the command executes, the error appears when the width x height is 640x360.

  Any ideas of what might be wrong ?

  UPDATE : I am pretty sure the error has got something to do with the audio encoding. If I change the -ab 96k part to -c:a copy, command executes.
  I cannot however use -c:a copy because for some audio formats the video does not play on mobile devices. Therefore i need the audio settings to be fixed and the same for all videos.

• FFmpeg audio channel rematrix (5.1 to stereo)

  29 octobre 2014, par Flock Dawson

  I’ve got a (very large !) Apple ProRes 422 file with 16ch audio. To be able to use it on a less powerful computer, I’d like to convert it to a standard MP4 file (h264 video codec, stereo audio). The original file has 16 channels of audio, however, and FFmpeg gives an error when I try to convert it (’Rematrix is needed’). How do I do rematrixing of audio channels ? Are there additional steps needed ?

  This is the FFmpeg command I used :

  ffmpeg -y -i Capture0000.mov -vcodec libx264 -vb 2000k -pix_fmt yuv420p -coder 0 -profile:v baseline -acodec libfaac -ab 128k /tmp/out.mp4

  This is the FFmpeg output :

  ffmpeg version 2.2.git Copyright (c) 2000-2014 the FFmpeg developers
  
        built on May  8 2014 14:17:45 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5)
  
        configuration: --prefix=/usr/local/ffmpeg_build --extra-cflags=-I/usr/local/ffmpeg_build/include --extra-ldflags=-L/usr/local/ffmpeg_build/lib --bindir=/usr/local/bin --extra-libs=-ldl --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree --enable-x11grab --enable-libxvid --enable-libfaac
  
        libavutil      52. 81.100 / 52. 81.100
  
        libavcodec     55. 60.103 / 55. 60.103
  
        libavformat    55. 37.102 / 55. 37.102
  
        libavdevice    55. 13.101 / 55. 13.101
  
        libavfilter     4.  5.100 /  4.  5.100
  
        libswscale      2.  6.100 /  2.  6.100
  
        libswresample   0. 18.100 /  0. 18.100
  
        libpostproc    52.  3.100 / 52.  3.100
  
      Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Capture0000.mov':
  
        Metadata:
  
          creation_time   : 2014-08-17 18:30:31
  
        Duration: 01:01:22.52, start: 0.000000, bitrate: 202001 kb/s
  
          Stream #0:0(eng): Video: prores (apch / 0x68637061), yuv422p10le, 1920x1080, 183513 kb/s, SAR 1:1 DAR 16:9, 25 fps, 25 tbr, 2500 tbn, 2500 tbc (default)
  
          Metadata:
  
            creation_time   : 2014-08-17 18:30:31
  
            handler_name    : Apple Alias Data Handler
  
            encoder         : Apple ProRes 422 (HQ)
  
          Stream #0:1(eng): Audio: pcm_s24le (lpcm / 0x6D63706C), 48000 Hz, 16 channels, s32, 18432 kb/s (default)
  
          Metadata:
  
            creation_time   : 2014-08-17 18:30:31
  
            handler_name    : Apple Alias Data Handler
  
      [auto-inserted resampler 0 @ 0x3943da0] [SWR @ 0x39441a0] Rematrix is needed between 16 channels and 5.1 but there is not enough information to do it
  
      [auto-inserted resampler 0 @ 0x3943da0] Failed to configure output pad on auto-inserted resampler 0
  
      Error opening filters!

  This is the FFprobe output :

  ffprobe version 2.2.git Copyright (c) 2007-2014 the FFmpeg developers
  
    built on May  8 2014 14:17:45 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5)
  
    configuration: --prefix=/usr/local/ffmpeg_build --extra-cflags=-I/usr/local/ffmpeg_build/include --extra-ldflags=-L/usr/local/ffmpeg_build/lib --bindir=/usr/local/bin --extra-libs=-ldl --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree --enable-x11grab --enable-libxvid --enable-libfaac
  
    libavutil      52. 81.100 / 52. 81.100
  
    libavcodec     55. 60.103 / 55. 60.103
  
    libavformat    55. 37.102 / 55. 37.102
  
    libavdevice    55. 13.101 / 55. 13.101
  
    libavfilter     4.  5.100 /  4.  5.100
  
    libswscale      2.  6.100 /  2.  6.100
  
    libswresample   0. 18.100 /  0. 18.100
  
    libpostproc    52.  3.100 / 52.  3.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Capture0000.mov':
  
    Metadata:
  
      creation_time   : 2014-08-17 18:30:31
  
    Duration: 01:01:22.52, start: 0.000000, bitrate: 202001 kb/s
  
      Stream #0:0(eng): Video: prores (apch / 0x68637061), yuv422p10le, 1920x1080, 183513 kb/s, SAR 1:1 DAR 16:9, 25 fps, 25 tbr, 2500 tbn, 2500 tbc (default)
  
      Metadata:
  
        creation_time   : 2014-08-17 18:30:31
  
        handler_name    : Apple Alias Data Handler
  
        encoder         : Apple ProRes 422 (HQ)
  
      Stream #0:1(eng): Audio: pcm_s24le (lpcm / 0x6D63706C), 48000 Hz, 16 channels, s32, 18432 kb/s (default)
  
      Metadata:
  
        creation_time   : 2014-08-17 18:30:31
  
        handler_name    : Apple Alias Data Handler