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• FFMPEG/avconv option -c:a copy

  1er juin 2013, par b747fp

  I am converting a bunch of videos from FLV to MP4 (for iphone compatibility) and using AAC codec it kept throwing out "invalid audio bitrate" or similar errors. I tried "-c:a copy" option and it works, but I am wondering if that tells ffmpeg to use the original MP3 codec or just the original audio bitrates/frequencies ?

  /usr/bin/avconv -i /var/www/vhosts/domain.com/httpdocs/conversions/34649274.flv -s 640x480 -b 1248k -vcodec libx264 -acodec aac -strict experimental -c:a copy /var/www/vhosts/domain.com/httpdocs/conversions/34649274.mp4

• FFMPEG fails in node exec but succeeds on OSX

  10 avril 2015, par rrrkren

  So I’m trying to get a thumbnail of a mov video using ffmpeg.
  Here is the command :

  ffmpeg -i video.mov -vf scale=-1:100 -r 1 -an -vframes 1 -f mjpeg thumb.jpg

  it works fine when I type it in terminal. But once I do it in javascript (node) :
  (thumbPath, destPath, and thumbname are all defined earlier, and I doubt they are the problem)

  var command = "ffmpeg -i "+ destPath +" -vf scale=-1:100 -ss 00:01 -r 1 -an -vframes 1  -f mjpeg "+thumbPath+thumbname;
  
  exec(command,function(err){
  
      if(err){
  
          console.log(err);
  
      };
  
  });

  The console logs :

  { [Error: Command failed: ffmpeg version 2.4.1-tessus Copyright (c) 2000-2014 the FFmpeg developers
  
    built on Sep 22 2014 23:16:01 with Apple LLVM version 6.0 (clang-600.0.51) (based on LLVM 3.5svn)
  
    configuration: --cc=/usr/bin/clang --prefix=/Users/tessus/data/ext/ffmpeg/sw --as=yasm --extra-version=tessus --disable-shared --enable-static --disable-ffplay --enable-gpl --enable-pthreads --enable-postproc --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libx265 --enable-libxvid --enable-libspeex --enable-bzlib --enable-zlib --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libxavs --enable-libsoxr --enable-libwavpack --enable-version3 --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvpx --enable-libgsm --enable-libopus --enable-libmodplug --enable-fontconfig --enable-libfreetype --enable-libass --enable-libbluray --enable-filters --disable-indev=qtkit --enable-runtime-cpudetect
  
    libavutil      54.  7.100 / 54.  7.100
  
    libavcodec     56.  1.100 / 56.  1.100
  
    libavformat    56.  4.101 / 56.  4.101
  
    libavdevice    56.  0.100 / 56.  0.100
  
    libavfilter     5.  1.100 /  5.  1.100
  
    libswscale      3.  0.100 /  3.  0.100
  
    libswresample   1.  1.100 /  1.  1.100
  
    libpostproc    53.  0.100 / 53.  0.100
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fe29c817000] moov atom not found
  
  video.mov: Invalid data found when processing input
  
  ] killed: false, code: 1, signal: null }

  I’ve looked up online and apparently the "moov atom not found error" is caused by the video being corrupted. But the command works fine when I type it in terminal. What’s wrong with my code ?

  Edit : This code works for mp4 videos, and the mov video was from an iPhone. I tried using a .mov file downloaded elsewhere and it works. Seems to be an issue with mov file shot with iPhone ?

• Adding audio to video without re encoding [migrated]

  4 mars 2015, par user1503606

  I am looking to add audio to a video without having to re encode the two pieces.

  I have looked at a few questions on stack overflow followed the answers and i still cant seemed to get it to work, if anyone can spot what i am missing please help.

  I am running this code.

  ffmpeg -i DJ_Mes_Rescue-Some_Day-Guesthouse_Music.mp3 -i output.mp4 -map 0:0 -map 1:0 -acodec copy -vcodec copy -shortest edit2.mp4 

  Now from what i understand ffmpeg is mapping the stream over the top ffmpeg info for the audio track is.

  Input #0, mp3, from 'DJ_Mes_Rescue-Some_Day-Guesthouse_Music.mp3':
  
    Metadata:
  
      encoder         : LAME 64bits version 3.98.4 (http://www.mp3dev.org/)
  
      title           : Some Day
  
      artist          : DJ Mes, Rescue
  
      TLEN            : 378750
  
      genre           : House
  
      track           : 1/0
  
      date            : 2015
  
    Duration: 00:06:18.80, start: 0.025056, bitrate: 320 kb/s
  
      Stream #0:0: Audio: mp3, 44100 Hz, stereo, s16p, 320 kb/s
  
      Metadata:
  
        encoder         : LAME3.98r
  
      Side data:
  
        replaygain: track gain - -10.100000, track peak - unknown, album gain - unknown, album peak - unknown, 
  
      Stream #0:1: Video: png, rgb24, 225x225, 90k tbr, 90k tbn, 90k tbc
  
      Metadata:
  
        title           : 
  
        comment         : Other

  And for the video it is.

  Input #1, mov,mp4,m4a,3gp,3g2,mj2, from 'output.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf56.15.102
  
    Duration: 00:00:49.46, start: 0.046440, bitrate: 566 kb/s
  
      Stream #1:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 568x320, 462 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc (default)
  
      Metadata:
  
        rotate          : 90
  
        handler_name    : VideoHandler
  
      Side data:
  
        displaymatrix: rotation of -90.00 degrees
  
      Stream #1:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 96 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler

  So i am mapping the stream 0:0 from the audio file to 1:0 from the video file, but all i seem to get is a video with no audio.

  Can someone help ?

  UPDATE whole output added

  ffmpeg -i Saison-Please_Don%27t_Go-Guesthouse_Music.mp3 -i output.mp4 -c copy -map 0:0 -map 1:0 -shortest mixed.mp4
  
  ffmpeg version 2.5.2 Copyright (c) 2000-2014 the FFmpeg developers
  
    built on Jan 12 2015 10:15:06 with Apple LLVM version 6.0 (clang-600.0.56) (based on LLVM 3.5svn)
  
    configuration: --prefix=/usr/local/Cellar/ffmpeg/2.5.2 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-libx264 --enable-libmp3lame --enable-libxvid --enable-libfreetype --enable-libtheora --enable-libvorbis --enable-libvpx --enable-librtmp --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libvo-aacenc --enable-libass --enable-ffplay --enable-libspeex --enable-libschroedinger --enable-libfdk-aac --enable-libopus --enable-frei0r --enable-libopenjpeg --disable-decoder=jpeg2000 --extra-cflags='-I/usr/local/Cellar/openjpeg/1.5.1_1/include/openjpeg-1.5 ' --enable-nonfree --enable-vda
  
    libavutil      54. 15.100 / 54. 15.100
  
    libavcodec     56. 13.100 / 56. 13.100
  
    libavformat    56. 15.102 / 56. 15.102
  
    libavdevice    56.  3.100 / 56.  3.100
  
    libavfilter     5.  2.103 /  5.  2.103
  
    libavresample   2.  1.  0 /  2.  1.  0
  
    libswscale      3.  1.101 /  3.  1.101
  
    libswresample   1.  1.100 /  1.  1.100
  
    libpostproc    53.  3.100 / 53.  3.100
  
  Input #0, mp3, from 'Saison-Please_Don%27t_Go-Guesthouse_Music.mp3':
  
    Metadata:
  
      encoder         : LAME 64bits version 3.98.4 (http://www.mp3dev.org/)
  
      title           : Please Donât Go
  
      artist          : Saison
  
      TLEN            : 408492
  
      genre           : House
  
      track           : 1/0
  
      date            : 2015
  
    Duration: 00:06:48.53, start: 0.025056, bitrate: 320 kb/s
  
      Stream #0:0: Audio: mp3, 44100 Hz, stereo, s16p, 320 kb/s
  
      Metadata:
  
        encoder         : LAME3.98r
  
      Side data:
  
        replaygain: track gain - -8.400000, track peak - unknown, album gain - unknown, album peak - unknown, 
  
      Stream #0:1: Video: png, rgb24, 225x225, 90k tbr, 90k tbn, 90k tbc
  
      Metadata:
  
        title           : 
  
        comment         : Other
  
  Input #1, mov,mp4,m4a,3gp,3g2,mj2, from 'output.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf56.15.102
  
    Duration: 00:00:49.46, start: 0.046440, bitrate: 566 kb/s
  
      Stream #1:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 568x320, 462 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc (default)
  
      Metadata:
  
        rotate          : 90
  
        handler_name    : VideoHandler
  
      Side data:
  
        displaymatrix: rotation of -90.00 degrees
  
      Stream #1:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 96 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
  Output #0, mp4, to 'mixed.mp4':
  
    Metadata:
  
      date            : 2015
  
      title           : Please Donât Go
  
      artist          : Saison
  
      TLEN            : 408492
  
      genre           : House
  
      track           : 1/0
  
      encoder         : Lavf56.15.102
  
      Stream #0:0: Audio: mp3 (i[0][0][0] / 0x0069), 44100 Hz, stereo, 320 kb/s
  
      Metadata:
  
        encoder         : LAME3.98r
  
      Side data:
  
        replaygain: track gain - -8.400000, track peak - unknown, album gain - unknown, album peak - unknown, 
  
      Stream #0:1(und): Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 568x320, q=2-31, 462 kb/s, 30 fps, 15360 tbn, 15360 tbc (default)
  
      Metadata:
  
        rotate          : 90
  
        handler_name    : VideoHandler
  
      Side data:
  
        displaymatrix: rotation of -90.00 degrees
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (copy)
  
    Stream #1:0 -> #0:1 (copy)
  
  Press [q] to stop, [?] for help
  
  frame= 1481 fps=0.0 q=-1.0 Lsize=    4759kB time=00:00:49.34 bitrate= 790.0kbits/s    
  
  video:2785kB audio:1929kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.960839%

  ANOTHER UPDATE :

  So i have tried the following

   ffmpeg -i 3.mp4 -i Saison-Please_Don%27t_Go-Guesthouse_Music.mp3 -i Saison-Please_Don%27t_Go-Guesthouse_Music.mp3 -map 0:0 -map 0:1 -map 1:0 -map 2:0 -c:v copy -c:a copy 23.mp4

  and if i run.

   ffmpeg -i 23.mp4 

  You can see the streams/audio has been added but it is not playing ?

  Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf56.15.102
  
    Duration: 00:06:48.53, start: 0.025057, bitrate: 713 kb/s
  
      Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 568x320, 462 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc (default)
  
      Metadata:
  
        rotate          : 90
  
        handler_name    : VideoHandler
  
      Side data:
  
        displaymatrix: rotation of -90.00 degrees
  
      Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 96 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
      Stream #0:2(und): Audio: mp3 (mp4a / 0x6134706D), 44100 Hz, stereo, s16p, 319 kb/s
  
      Metadata:
  
        handler_name    : SoundHandler
  
      Stream #0:3(und): Audio: mp3 (mp4a / 0x6134706D), 44100 Hz, stereo, s16p, 319 kb/s
  
      Metadata:
  
        handler_name    : SoundHandler

  ONE MORE UPDATE THIS SEEMS TO WORK :

  ffmpeg -i 3.mp4 -i Saison-Please_Don%27t_Go-Guesthouse_Music.mp3 -map 0:0 -map 0:1 -map 1:0  -c:v copy -c:a copy 234.mp4 && ffmpeg -i 234.mp4 -map 0:0 -map 0:2 -acodec copy -vcodec copy new_file3.mp4