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• Appending a list of movies MP4s causes the sound to be dropped or garbled at some point

  9 février 2020, par Marie

  Update I am able to reproduce the issue by concatenating 10 Hello.mp4 clips and see the audio drop out/garbled at about 5 seconds playback. This is via VLC latest 3.0.8 on Windows7 64bit. Window Player zero sound. Media Player Classic it plays fine all 10 audio or the word "Hello". The same movie when dragged onto Whatsapp the PC app plays OK but no sound if played from the Phone Whatsapp. Perhaps its my computer too slow in the production of this clip ??? I don’t know what to trust anymore.

  I copied the same ffmpeg.exe onto my kid’s Windows10 laptop and was able to produce the same behavior with sound dropping out with VLC however Windows10 media player is able to play the audio without a glitch.

  You can reproduce the same on your end with this batch file

  _HELLO_MP4s.CMD

  rem 2:07 AM 2/8/2020
  
  rem 
  
  rem  
  
  SET EXE="S:\_BINS\FFmpeg 4.2.1 20200112\bin\ffmpeg.exe"
  
  
  
  SET ROOTPATH=.\
  
  
  
  SET OUT_FILE="%ROOTPATH%HELLOs.MP4"
  
  
  
  SET IN_FILES_LIST="%ROOTPATH%IN_FILES_LIST.TXT"
  
  ECHO file '%ROOTPATH%HELLO.mp4' > %IN_FILES_LIST% 
  
  ECHO file '%ROOTPATH%HELLO.mp4' >> %IN_FILES_LIST% 
  
  ECHO file '%ROOTPATH%HELLO.mp4' >> %IN_FILES_LIST% 
  
  ECHO file '%ROOTPATH%HELLO.mp4' >> %IN_FILES_LIST% 
  
  ECHO file '%ROOTPATH%HELLO.mp4' >> %IN_FILES_LIST% 
  
  ECHO file '%ROOTPATH%HELLO.mp4' >> %IN_FILES_LIST% 
  
  ECHO file '%ROOTPATH%HELLO.mp4' >> %IN_FILES_LIST% 
  
  ECHO file '%ROOTPATH%HELLO.mp4' >> %IN_FILES_LIST% 
  
  ECHO file '%ROOTPATH%HELLO.mp4' >> %IN_FILES_LIST% 
  
  ECHO file '%ROOTPATH%HELLO.mp4' >> %IN_FILES_LIST% 
  
  
  
  SET OPTIONS= -f concat -safe 0 -i  %IN_FILES_LIST%  -c copy -y  %OUT_FILE%
  
  
  
  SET INFO_FILE="INFO.TXT"
  
  
  
  %EXE% %OPTIONS%  1> %INFO_FILE% 2>&1 
  
  
  
  ECHO ======================== >> %INFO_FILE% 
  
  ECHO OUT_FILE=%OUT_FILE%  >> %INFO_FILE% 
  
  ECHO EXE=%EXE%  >> %INFO_FILE%
  
  ECHO OPTIONS=%OPTIONS%  >> %INFO_FILE% 
  
  ECHO ======================== >> %INFO_FILE%

  Original Post
  My process is in 3 steps
  Step 1) Corresponding to each bitmap I have 00.JPG ... NN.JPG I combine a list of "SOURCE" mp3 audio into a single audio mp3 to produce matching 00.MP3 ... NN.MP3

  I had glitch here where one my mp3 was not of the correct Sample Rate, however a kind soul in this forum helped me fix that.
  You can read the details here :

  When I append a silent audio (mp3) to an existing list of audio it garbles the final audio ?

  Step 2) combine each mp3 from previous with a the filename matching bitmap to produce a movie .MP4

  IOW,

  • 00.JPG + 00.MP3 >> 00.MP4
  • 01.JPG + 01.MP3 >> 01.MP4
  • and so on

  From this run of 24 subparts, I hand tested some of these movies against Whatsapp and they are accepted fine.
  However, the final MOVIE.MP4 is not.
  I will list below their info from ffprobe.

  Step 3) combine the list of movies from previous into a final MOVIE.MP4
  This is where I have been having random issues typically with audio, currently this audio drops at about 20s from start. Corresponding to roughly movies parts 04.mp4 to 07.mp4

  I play the videos via VLC but Windows Media Player has even worse playback.

  I am able to reproduce Step3 and thus MOVIE.MP4 with following batch file

  rem 10:33 PM 2/6/2020
  
  SET EXE="S:\_BINS\FFmpeg 4.2.1 20200112\bin\ffmpeg.exe"
  
  
  
  SET ROOTPATH=.\
  
  
  
  SET OUT_FILE="%ROOTPATH%MOVIE.MP4"
  
  
  
  SET IN_FILES_LIST="%ROOTPATH%IN_FILES_LIST.TXT"
  
  
  
  SET OPTIONS= -f concat -safe 0 -i  %IN_FILES_LIST%  -c copy -y  %OUT_FILE%
  
  
  
  SET INFO_FILE="INFO.TXT"
  
  
  
  %EXE% %OPTIONS%  1> %INFO_FILE% 2>&1 
  
  
  
  rem PAUSE

  The content of IN_FILES_LIST.TXT

  file '00.mp4'
  
  file '01.mp4'
  
  file '02.mp4'
  
  ...
  
  file '23.mp4'
  
  file '24.mp4'

  (Step 2) uses the following :)
  

  The following is ffprobe on the source audio MP3s (Step 1)

  MP3s_ORIGINAL.TXT
  
  ========================BEGIN 
  
  [mp3 @ 0000000000513100] Estimating duration from bitrate, this may be inaccurate
  
  Input #0, mp3, from '.\PLAY\00.mp3':
  
    Duration: 00:00:03.36, start: 0.000000, bitrate: 32 kb/s
  
      Stream #0:0: Audio: mp3, 24000 Hz, mono, fltp, 32 kb/s
  
  [mp3 @ 00000000003f3180] Estimating duration from bitrate, this may be inaccurate
  
  Input #0, mp3, from '.\PLAY\01.mp3':
  
    Duration: 00:00:00.46, start: 0.000000, bitrate: 32 kb/s
  
      Stream #0:0: Audio: mp3, 24000 Hz, mono, fltp, 32 kb/s
  
  [mp3 @ 00000000004a3180] Estimating duration from bitrate, this may be inaccurate
  
  Input #0, mp3, from '.\PLAY\02.mp3':
  
    Duration: 00:00:00.58, start: 0.000000, bitrate: 32 kb/s
  
      Stream #0:0: Audio: mp3, 24000 Hz, mono, fltp, 32 kb/s
  
  [mp3 @ 0000000000623180] Estimating duration from bitrate, this may be inaccurate
  
  Input #0, mp3, from '.\PLAY\03.mp3':
  
    Duration: 00:00:00.84, start: 0.000000, bitrate: 32 kb/s
  
      Stream #0:0: Audio: mp3, 24000 Hz, mono, fltp, 32 kb/s
  
  [mp3 @ 00000000003a3180] Estimating duration from bitrate, this may be inaccurate
  
  Input #0, mp3, from '.\PLAY\04.mp3':
  
    Duration: 00:00:00.86, start: 0.000000, bitrate: 32 kb/s
  
      Stream #0:0: Audio: mp3, 24000 Hz, mono, fltp, 32 kb/s
  
  [mp3 @ 0000000000433180] Estimating duration from bitrate, this may be inaccurate
  
  Input #0, mp3, from '.\PLAY\05.mp3':
  
    Duration: 00:00:00.98, start: 0.000000, bitrate: 32 kb/s
  
      Stream #0:0: Audio: mp3, 24000 Hz, mono, fltp, 32 kb/s
  
  [mp3 @ 0000000000683180] Estimating duration from bitrate, this may be inaccurate
  
  Input #0, mp3, from '.\PLAY\06.mp3':
  
    Duration: 00:00:00.98, start: 0.000000, bitrate: 32 kb/s
  
      Stream #0:0: Audio: mp3, 24000 Hz, mono, fltp, 32 kb/s
  
  [mp3 @ 00000000004d3180] Estimating duration from bitrate, this may be inaccurate
  
  Input #0, mp3, from '.\PLAY\07.mp3':
  
    Duration: 00:00:00.98, start: 0.000000, bitrate: 32 kb/s
  
      Stream #0:0: Audio: mp3, 24000 Hz, mono, fltp, 32 kb/s
  
  [mp3 @ 00000000004c3180] Estimating duration from bitrate, this may be inaccurate
  
  Input #0, mp3, from '.\PLAY\08.mp3':
  
    Duration: 00:00:00.98, start: 0.000000, bitrate: 32 kb/s
  
      Stream #0:0: Audio: mp3, 24000 Hz, mono, fltp, 32 kb/s
  
  [mp3 @ 0000000000573180] Estimating duration from bitrate, this may be inaccurate
  
  Input #0, mp3, from '.\PLAY\09.mp3':
  
    Duration: 00:00:00.98, start: 0.000000, bitrate: 32 kb/s
  
      Stream #0:0: Audio: mp3, 24000 Hz, mono, fltp, 32 kb/s
  
  [mp3 @ 0000000000583180] Estimating duration from bitrate, this may be inaccurate
  
  Input #0, mp3, from '.\PLAY\10.mp3':
  
    Duration: 00:00:00.98, start: 0.000000, bitrate: 32 kb/s
  
      Stream #0:0: Audio: mp3, 24000 Hz, mono, fltp, 32 kb/s
  
  [mp3 @ 00000000005e3180] Estimating duration from bitrate, this may be inaccurate
  
  Input #0, mp3, from '.\PLAY\11.mp3':
  
    Duration: 00:00:00.98, start: 0.000000, bitrate: 32 kb/s
  
      Stream #0:0: Audio: mp3, 24000 Hz, mono, fltp, 32 kb/s
  
  [mp3 @ 0000000000553180] Estimating duration from bitrate, this may be inaccurate
  
  Input #0, mp3, from '.\PLAY\12.mp3':
  
    Duration: 00:00:00.98, start: 0.000000, bitrate: 32 kb/s
  
      Stream #0:0: Audio: mp3, 24000 Hz, mono, fltp, 32 kb/s
  
  [mp3 @ 0000000000563180] Estimating duration from bitrate, this may be inaccurate
  
  
  
  
  
  trimmed because SO limits post to 30000 chars

  The following is ffprobe on the MP3s concatenated with 2second Silence. All their Sample Rate 24K and Bit Rate 32k seems OK ?? (Also Step 1)

  MP3s_withSilenceAppended.TXT
  
  ========================BEGIN 
  
  Input #0, mp3, from '00.mp3':
  
    Metadata:
  
      encoder         : Lavf58.35.101
  
    Duration: 00:00:05.42, start: 0.046042, bitrate: 32 kb/s
  
      Stream #0:0: Audio: mp3, 24000 Hz, mono, fltp, 32 kb/s
  
  Input #0, mp3, from '01.mp3':
  
    Metadata:
  
      encoder         : Lavf58.35.101
  
    Duration: 00:00:02.52, start: 0.046042, bitrate: 32 kb/s
  
      Stream #0:0: Audio: mp3, 24000 Hz, mono, fltp, 32 kb/s
  
  Input #0, mp3, from '02.mp3':
  
    Metadata:
  
      encoder         : Lavf58.35.101
  
    Duration: 00:00:02.64, start: 0.046042, bitrate: 32 kb/s
  
      Stream #0:0: Audio: mp3, 24000 Hz, mono, fltp, 32 kb/s
  
  Input #0, mp3, from '03.mp3':
  
    Metadata:
  
      encoder         : Lavf58.35.101
  
    Duration: 00:00:02.90, start: 0.046042, bitrate: 32 kb/s
  
      Stream #0:0: Audio: mp3, 24000 Hz, mono, fltp, 32 kb/s
  
  Input #0, mp3, from '04.mp3':
  
    Metadata:
  
      encoder         : Lavf58.35.101
  
    Duration: 00:00:02.93, start: 0.046042, bitrate: 32 kb/s
  
      Stream #0:0: Audio: mp3, 24000 Hz, mono, fltp, 32 kb/s
  
  Input #0, mp3, from '05.mp3':
  
    Metadata:
  
      encoder         : Lavf58.35.101
  
    Duration: 00:00:03.05, start: 0.046042, bitrate: 32 kb/s
  
      Stream #0:0: Audio: mp3, 24000 Hz, mono, fltp, 32 kb/s
  
  Input #0, mp3, from '06.mp3':
  
    Metadata:
  
      encoder         : Lavf58.35.101
  
    Duration: 00:00:03.05, start: 0.046042, bitrate: 32 kb/s
  
      Stream #0:0: Audio: mp3, 24000 Hz, mono, fltp, 32 kb/s
  
  Input #0, mp3, from '07.mp3':
  
    Metadata:
  
      encoder         : Lavf58.35.101
  
    Duration: 00:00:03.05, start: 0.046042, bitrate: 32 kb/s
  
      Stream #0:0: Audio: mp3, 24000 Hz, mono, fltp, 32 kb/s
  
  Input #0, mp3, from '08.mp3':
  
    Metadata:
  
      encoder         : Lavf58.35.101
  
    Duration: 00:00:03.05, start: 0.046042, bitrate: 32 kb/s
  
      Stream #0:0: Audio: mp3, 24000 Hz, mono, fltp, 32 kb/s
  
  Input #0, mp3, from '09.mp3':
  
    Metadata:
  
      encoder         : Lavf58.35.101
  
    Duration: 00:00:03.05, start: 0.046042, bitrate: 32 kb/s
  
      Stream #0:0: Audio: mp3, 24000 Hz, mono, fltp, 32 kb/s
  
  Input #0, mp3, from '10.mp3':
  
    Metadata:
  
      encoder         : Lavf58.35.101
  
    Duration: 00:00:03.05, start: 0.046042, bitrate: 32 kb/s
  
      Stream #0:0: Audio: mp3, 24000 Hz, mono, fltp, 32 kb/s
  
  Input #0, mp3, from '11.mp3':
  
    Metadata:
  
      encoder         : Lavf58.35.101
  
    Duration: 00:00:03.05, start: 0.046042, bitrate: 32 kb/s
  
      Stream #0:0: Audio: mp3, 24000 Hz, mono, fltp, 32 kb/s
  
  Input #0, mp3, from '12.mp3':
  
    Metadata:
  
      encoder         : Lavf58.35.101
  
    Duration: 00:00:03.05, start: 0.046042, bitrate: 32 kb/s
  
      Stream #0:0: Audio: mp3, 24000 Hz, mono, fltp, 32 kb/s
  
  Input #0, mp3, from '13.mp3':
  
    Metadata:
  
      encoder         : Lavf58.35.101
  
    Duration: 00:00:05.81, start: 0.046042, bitrate: 32 kb/s
  
      Stream #0:0: Audio: mp3, 24000 Hz, mono, fltp, 32 kb/s
  
  Input #0, mp3, from '14.mp3':
  
    Metadata:
  
      encoder         : Lavf58.35.101
  
    Duration: 00:00:02.93, start: 0.046042, bitrate: 32 kb/s
  
      Stream #0:0: Audio: mp3, 24000 Hz, mono, fltp, 32 kb/s
  
  Input #0, mp3, from '15.mp3':
  
    Metadata:
  
      encoder         : Lavf58.35.101
  
    Duration: 00:00:02.66, start: 0.046042, bitrate: 32 kb/s
  
      Stream #0:0: Audio: mp3, 24000 Hz, mono, fltp, 32 kb/s
  
  Input #0, mp3, from '16.mp3':
  
    Metadata:
  
      encoder         : Lavf58.35.101
  
    Duration: 00:00:02.66, start: 0.046042, bitrate: 32 kb/s
  
      Stream #0:0: Audio: mp3, 24000 Hz, mono, fltp, 32 kb/s
  
  Input #0, mp3, from '17.mp3':
  
    Metadata:
  
      encoder         : Lavf58.35.101
  
    Duration: 00:00:02.66, start: 0.046042, bitrate: 32 kb/s
  
      Stream #0:0: Audio: mp3, 24000 Hz, mono, fltp, 32 kb/s
  
  Input #0, mp3, from '18.mp3':
  
    Metadata:
  
      encoder         : Lavf58.35.101
  
    Duration: 00:00:02.83, start: 0.046042, bitrate: 32 kb/s
  
      Stream #0:0: Audio: mp3, 24000 Hz, mono, fltp, 32 kb/s
  
  Input #0, mp3, from '19.mp3':
  
    Metadata:
  
      encoder         : Lavf58.35.101
  
    Duration: 00:00:06.50, start: 0.046042, bitrate: 32 kb/s
  
      Stream #0:0: Audio: mp3, 24000 Hz, mono, fltp, 32 kb/s
  
  Input #0, mp3, from '20.mp3':
  
    Metadata:
  
      encoder         : Lavf58.35.101
  
    Duration: 00:00:03.05, start: 0.046042, bitrate: 32 kb/s
  
      Stream #0:0: Audio: mp3, 24000 Hz, mono, fltp, 32 kb/s
  
  Input #0, mp3, from '21.mp3':
  
    Metadata:
  
      encoder         : Lavf58.35.101
  
    Duration: 00:00:03.05, start: 0.046042, bitrate: 32 kb/s
  
      Stream #0:0: Audio: mp3, 24000 Hz, mono, fltp, 32 kb/s
  
  Input #0, mp3, from '22.mp3':
  
    Metadata:
  
      encoder         : Lavf58.35.101
  
    Duration: 00:00:03.14, start: 0.046042, bitrate: 32 kb/s
  
      Stream #0:0: Audio: mp3, 24000 Hz, mono, fltp, 32 kb/s
  
  Input #0, mp3, from '23.mp3':
  
    Metadata:
  
      encoder         : Lavf58.35.101
  
    Duration: 00:00:06.12, start: 0.046042, bitrate: 32 kb/s
  
      Stream #0:0: Audio: mp3, 24000 Hz, mono, fltp, 32 kb/s
  
  Input #0, mp3, from '24.mp3':
  
    Metadata:
  
      encoder         : Lavf58.35.101
  
    Duration: 00:00:03.14, start: 0.046042, bitrate: 32 kb/s
  
      Stream #0:0: Audio: mp3, 24000 Hz, mono, fltp, 32 kb/s

  The following is ffmpeg info output during the production of final movie MOVIE.MP4
  (Step 3)

  ========================BEGIN 
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '\VID\00.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf58.35.101
  
    Duration: 00:00:05.54, start: 0.000000, bitrate: 174 kb/s
  
      Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 137 kb/s, 24 fps, 24 tbr, 24k tbn, 48 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: mp3 (mp4a / 0x6134706D), 24000 Hz, mono, fltp, 32 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '\VID\01.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf58.35.101
  
    Duration: 00:00:02.71, start: 0.000000, bitrate: 269 kb/s
  
      Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 242 kb/s, 24 fps, 24 tbr, 24k tbn, 48 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: mp3 (mp4a / 0x6134706D), 24000 Hz, mono, fltp, 32 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '\VID\02.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf58.35.101
  
    Duration: 00:00:02.71, start: 0.000000, bitrate: 285 kb/s
  
      Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 245 kb/s, 24 fps, 24 tbr, 24k tbn, 48 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: mp3 (mp4a / 0x6134706D), 24000 Hz, mono, fltp, 32 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '\VID\03.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf58.35.101
  
    Duration: 00:00:03.04, start: 0.000000, bitrate: 275 kb/s
  
      Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 239 kb/s, 24 fps, 24 tbr, 24k tbn, 48 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: mp3 (mp4a / 0x6134706D), 24000 Hz, mono, fltp, 32 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '\VID\04.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf58.35.101
  
    Duration: 00:00:03.04, start: 0.000000, bitrate: 286 kb/s
  
      Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 250 kb/s, 24 fps, 24 tbr, 24k tbn, 48 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: mp3 (mp4a / 0x6134706D), 24000 Hz, mono, fltp, 32 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '\VID\05.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf58.35.101
  
    Duration: 00:00:03.21, start: 0.000000, bitrate: 281 kb/s
  
      Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 249 kb/s, 24 fps, 24 tbr, 24k tbn, 48 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: mp3 (mp4a / 0x6134706D), 24000 Hz, mono, fltp, 32 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '\VID\06.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf58.35.101
  
    Duration: 00:00:03.21, start: 0.000000, bitrate: 281 kb/s
  
      Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 249 kb/s, 24 fps, 24 tbr, 24k tbn, 48 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: mp3 (mp4a / 0x6134706D), 24000 Hz, mono, fltp, 32 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '\VID\07.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf58.35.101
  
    Duration: 00:00:03.21, start: 0.000000, bitrate: 150 kb/s
  
      Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 115 kb/s, 24 fps, 24 tbr, 24k tbn, 48 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: mp3 (mp4a / 0x6134706D), 24000 Hz, mono, fltp, 32 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '\VID\08.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf58.35.101
  
    Duration: 00:00:03.21, start: 0.000000, bitrate: 201 kb/s
  
      Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 166 kb/s, 24 fps, 24 tbr, 24k tbn, 48 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: mp3 (mp4a / 0x6134706D), 24000 Hz, mono, fltp, 32 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '\VID\09.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf58.35.101
  
    Duration: 00:00:03.21, start: 0.000000, bitrate: 247 kb/s
  
      Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 214 kb/s, 24 fps, 24 tbr, 24k tbn, 48 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: mp3 (mp4a / 0x6134706D), 24000 Hz, mono, fltp, 32 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '\VID\10.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf58.35.101
  
    Duration: 00:00:03.21, start: 0.000000, bitrate: 247 kb/s
  
      Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 214 kb/s, 24 fps, 24 tbr, 24k tbn, 48 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: mp3 (mp4a / 0x6134706D), 24000 Hz, mono, fltp, 32 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '\VID\11.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf58.35.101
  
    Duration: 00:00:03.21, start: 0.000000, bitrate: 131 kb/s
  
      Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 95 kb/s, 24 fps, 24 tbr, 24k tbn, 48 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: mp3 (mp4a / 0x6134706D), 24000 Hz, mono, fltp, 32 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '\VID\12.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf58.35.101
  
    Duration: 00:00:03.21, start: 0.000000, bitrate: 194 kb/s
  
      Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 159 kb/s, 24 fps, 24 tbr, 24k tbn, 48 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: mp3 (mp4a / 0x6134706D), 24000 Hz, mono, fltp, 32 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '\VID\13.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf58.35.101
  
    Duration: 00:00:05.88, start: 0.000000, bitrate: 207 kb/s
  
      Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 169 kb/s, 24 fps, 24 tbr, 24k tbn, 48 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: mp3 (mp4a / 0x6134706D), 24000 Hz, mono, fltp, 32 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '\VID\14.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf58.35.101
  
    Duration: 00:00:03.04, start: 0.000000, bitrate: 335 kb/s
  
      Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 300 kb/s, 24 fps, 24 tbr, 24k tbn, 48 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: mp3 (mp4a / 0x6134706D), 24000 Hz, mono, fltp, 32 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '\VID\15.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf58.35.101
  
    Duration: 00:00:02.88, start: 0.000000, bitrate: 365 kb/s
  
      Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 342 kb/s, 24 fps, 24 tbr, 24k tbn, 48 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: mp3 (mp4a / 0x6134706D), 24000 Hz, mono, fltp, 32 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '\VID\16.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf58.35.101
  
    Duration: 00:00:02.88, start: 0.000000, bitrate: 384 kb/s
  
      Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 362 kb/s, 24 fps, 24 tbr, 24k tbn, 48 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: mp3 (mp4a / 0x6134706D), 24000 Hz, mono, fltp, 32 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '\VID\17.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf58.35.101
  
    Duration: 00:00:02.88, start: 0.000000, bitrate: 390 kb/s
  
      Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 368 kb/s, 24 fps, 24 tbr, 24k tbn, 48 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: mp3 (mp4a / 0x6134706D), 24000 Hz, mono, fltp, 32 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '\VID\18.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf58.35.101
  
    Duration: 00:00:03.04, start: 0.000000, bitrate: 386 kb/s
  
      Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 363 kb/s, 24 fps, 24 tbr, 24k tbn, 48 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: mp3 (mp4a / 0x6134706D), 24000 Hz, mono, fltp, 32 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '\VID\19.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf58.35.101
  
    Duration: 00:00:06.71, start: 0.000000, bitrate: 204 kb/s
  
      Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 169 kb/s, 24 fps, 24 tbr, 24k tbn, 48 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: mp3 (mp4a / 0x6134706D), 24000 Hz, mono, fltp, 32 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '\VID\20.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf58.35.101
  
    Duration: 00:00:03.21, start: 0.000000, bitrate: 194 kb/s
  
      Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 159 kb/s, 24 fps, 24 tbr, 24k tbn, 48 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: mp3 (mp4a / 0x6134706D), 24000 Hz, mono, fltp, 32 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '\VID\21.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf58.35.101
  
    Duration: 00:00:03.21, start: 0.000000, bitrate: 194 kb/s
  
      Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 159 kb/s, 24 fps, 24 tbr, 24k tbn, 48 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: mp3 (mp4a / 0x6134706D), 24000 Hz, mono, fltp, 32 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '\VID\22.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf58.35.101
  
    Duration: 00:00:03.21, start: 0.000000, bitrate: 208 kb/s
  
      Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 169 kb/s, 24 fps, 24 tbr, 24k tbn, 48 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: mp3 (mp4a / 0x6134706D), 24000 Hz, mono, fltp, 32 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '\VID\23.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf58.35.101
  
    Duration: 00:00:06.21, start: 0.000000, bitrate: 204 kb/s
  
      Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 166 kb/s, 24 fps, 24 tbr, 24k tbn, 48 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: mp3 (mp4a / 0x6134706D), 24000 Hz, mono, fltp, 32 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '\VID\24.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf58.35.101
  
    Duration: 00:00:03.21, start: 0.000000, bitrate: 173 kb/s
  
      Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 134 kb/s, 24 fps, 24 tbr, 24k tbn, 48 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: mp3 (mp4a / 0x6134706D), 24000 Hz, mono, fltp, 32 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '\VID\MOVIE.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf58.35.101
  
    Duration: 00:01:29.05, start: 0.000000, bitrate: 239 kb/s
  
      Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 203 kb/s, 23.53 fps, 24 tbr, 24k tbn, 48 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: mp3 (mp4a / 0x6134706D), 24000 Hz, mono, fltp, 30 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler

  I have not been able yet to reproduce the issue with a smaller set of movies, in the meantime if you would to get a copy I would have to upload an archive to a link so you can have them on your side.

  Alternatively, if you would like me to provide additional info from these steps let me know what commands and I will be happy to provide.

  Thank you.

• Neutral net or neutered

  4 juin 2013, par Mans — Law and liberty

  In recent weeks, a number of high-profile events, in the UK and elsewhere, have been quickly seized upon to promote a variety of schemes for monitoring or filtering Internet access. These proposals, despite their good intentions of protecting children or fighting terrorism, pose a serious threat to fundamental liberties. Although at a glance the ideas may seem like a reasonable price to pay for the prevention of some truly hideous crimes, there is more than first meets the eye. Internet regulation in any form whatsoever is the thin end of a wedge at whose other end we find severely restricted freedom of expression of the kind usually associated with oppressive dictatorships. Where the Internet was once a novelty, it now forms an integrated part of modern society ; regulating the Internet means regulating our lives.

  Terrorism

  Following the brutal murder of British soldier Lee Rigby in Woolwich, attempts were made in the UK to revive the controversial Communications Data Bill, also dubbed the snooper’s charter. The bill would give police and security services unfettered access to details (excluding content) of all digital communication in the UK without needing so much as a warrant.

  The powers afforded by the snooper’s charter would, the argument goes, enable police to prevent crimes such as the one witnessed in Woolwich. True or not, the proposal would, if implemented, also bring about infrastructure for snooping on anyone at any time for any purpose. Once available, the temptation may become strong to extend, little by little, the legal use of these abilities to cover ever more everyday activities, all in the name of crime prevention, of course.

  In the emotional aftermath of a gruesome act, anything with the promise of preventing it happening again may seem like a good idea. At times like these it is important, more than ever, to remain rational and carefully consider all the potential consequences of legislation, not only the intended ones.

  Hate speech

  Hand in hand with terrorism goes hate speech, preachings designed to inspire violence against people of some singled-out nation, race, or other group. Naturally, hate speech is often to be found on the Internet, where it can reach large audiences while the author remains relatively protected. Naturally, we would prefer for it not to exist.

  To fulfil the utopian desire of a clean Internet, some advocate mandatory filtering by Internet service providers and search engines to remove this unwanted content. Exactly how such censoring might be implemented is however rarely dwelt upon, much less the consequences inadvertent blocking of innocent material might have.

  Pornography

  Another common target of calls for filtering is pornography. While few object to the blocking of child pornography, at least in principle, the debate runs hotter when it comes to the legal variety. Pornography, it is claimed, promotes violence towards women and is immoral or generally offensive. As such it ought to be blocked in the name of the greater good.

  The conviction last week of paedophile Mark Bridger for the abduction and murder of five-year-old April Jones renewed the debate about filtering of pornography in the UK ; his laptop was found to contain child pornography. John Carr of the UK government’s Council on Child Internet Safety went so far as suggesting a default blocking of all pornography, access being granted to an Internet user only once he or she had registered with some unspecified entity. Registering people wishing only to access perfectly legal material is not something we do in a democracy.

  The reality is that Google and other major search engines already remove illegal images from search results and report them to the appropriate authorities. In the UK, the Internet Watch Foundation, a non-government organisation, maintains a blacklist of what it deems ‘potentially criminal’ content, and many Internet service providers block access based on this list.

  While well-intentioned, the IWF and its blacklist should raise some concerns. Firstly, a vigilante organisation operating in secret and with no government oversight acting as the nation’s morality police has serious implications for freedom of speech. Secondly, the blocks imposed are sometimes more far-reaching than intended. In one incident, an attempt to block the cover image of the Scorpions album Virgin Killer hosted by Wikipedia (in itself a dubious decision) rendered the entire related article inaccessible as well as interfered with editing.

  Net neutrality

  Content filtering, or more precisely the lack thereof, is central to the concept of net neutrality. Usually discussed in the context of Internet service providers, this is the principle that the user should have equal, unfiltered access to all content. As a consequence, ISPs should not be held responsible for the content they deliver. Compare this to how the postal system works.

  The current debate shows that the principle of net neutrality is important not only at the ISP level, but should also include providers of essential services on the Internet. This means search engines should not be responsible for or be required to filter results, email hosts should not be required to scan users’ messages, and so on. No mandatory censoring can be effective without infringing the essential liberties of freedom of speech and press.

  Social networks operate in a less well-defined space. They are clearly not part of the essential Internet infrastructure, and they require that users sign up and agree to their terms and conditions. Because of this, they can include restrictions that would be unacceptable for the Internet as a whole. At the same time, social networks are growing in importance as means of communication between people, and as such they have a moral obligation to act fairly and apply their rules in a transparent manner.

  Facebook was recently under fire, accused of not taking sufficient measures to curb ‘hate speech,’ particularly against women. Eventually they pledged to review their policies and methods, and reducing the proliferation of such content will surely make the web a better place. Nevertheless, one must ask how Facebook (or another social network) might react to similar pressure from, say, a religious group demanding removal of ‘blasphemous’ content. What about demands from a foreign government ? Only yesterday, the Turkish prime minister Erdogan branded Twitter ‘a plague’ in a TV interview.

  Rather than impose upon Internet companies the burden of law enforcement, we should provide them the latitude to set their own policies as well as the legal confidence to stand firm in the face of unreasonable demands. The usual market forces will promote those acting responsibly.

  Further reading

  • Tory-Labour pact could save data bill, says Lord Howard
  • Internet companies warn May over ‘snooper’s charter’
  • Snooper’s charter ‘should be replaced by strengthening of existing powers’
  • Exclusive : ‘Snooper’s charter’ would not have prevented Woolwich attack, says MI5
  • Search engines urged to block more online porn sites
  • Why technology must be the solution to child abuse material online
  • Google must take more action to police explicit content, says Vince Cable
  • Facebook bows to campaign groups over ‘hate speech’
  • Facebook sexism campaign attracts thousands online
  • Türkischer Ministerpräsident : Twitter ist eine Plage
  • Valls : « La traque sur Internet doit être une priorité pour nous »
  • La Cnil, futur juge d’Internet
  • “National security matter” : Third agency caught unilaterally blocking web sites

• Problems when make ffmpeg with ios5.1

  20 octobre 2012, par why

  I am using https://github.com/lajos/iFrameExtractor and there is ffmpeg directory.

  I can configure and make successful, but there some errors when run ./build_universal

   libavformat/metadata_compat.c: In function ‘ff_metadata_mux_compat’:
  
  libavformat/metadata_compat.c:129: warning: the address of ‘number’ will always evaluate as ‘true’
  
  libavformat/metadata_compat.c:130: warning: the address of ‘number’ will always evaluate as ‘true’
  
  /applications/xcode.app/contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc -DHAVE_AV_CONFIG_H -I. -I"/Users/why/work/iFrameExtractor/ffmpeg" -D_ISOC99_SOURCE -D_POSIX_C_SOURCE=200112 -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -DPIC -std=c99 -fomit-frame-pointer -fPIC -g -Wdeclaration-after-statement -Wall -Wno-switch -Wdisabled-optimization -Wpointer-arith -Wredundant-decls -Wno-pointer-sign -Wcast-qual -Wwrite-strings -Wundef -O3 -fno-math-errno -fno-tree-vectorize       -MMD -MF libavformat/options.d -MT libavformat/options.o -c -o libavformat/options.o libavformat/options.c
  
  /applications/xcode.app/contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc -DHAVE_AV_CONFIG_H -I. -I"/Users/why/work/iFrameExtractor/ffmpeg" -D_ISOC99_SOURCE -D_POSIX_C_SOURCE=200112 -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -DPIC -std=c99 -fomit-frame-pointer -fPIC -g -Wdeclaration-after-statement -Wall -Wno-switch -Wdisabled-optimization -Wpointer-arith -Wredundant-decls -Wno-pointer-sign -Wcast-qual -Wwrite-strings -Wundef -O3 -fno-math-errno -fno-tree-vectorize       -MMD -MF libavformat/os_support.d -MT libavformat/os_support.o -c -o libavformat/os_support.o libavformat/os_support.c
  
  libavformat/os_support.c: In function ‘resolve_host’:
  
  libavformat/os_support.c:68: warning: implicit declaration of function ‘inet_aton’
  
  /applications/xcode.app/contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc -DHAVE_AV_CONFIG_H -I. -I"/Users/why/work/iFrameExtractor/ffmpeg" -D_ISOC99_SOURCE -D_POSIX_C_SOURCE=200112 -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -DPIC -std=c99 -fomit-frame-pointer -fPIC -g -Wdeclaration-after-statement -Wall -Wno-switch -Wdisabled-optimization -Wpointer-arith -Wredundant-decls -Wno-pointer-sign -Wcast-qual -Wwrite-strings -Wundef -O3 -fno-math-errno -fno-tree-vectorize       -MMD -MF libavformat/sdp.d -MT libavformat/sdp.o -c -o libavformat/sdp.o libavformat/sdp.c
  
  /applications/xcode.app/contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc -DHAVE_AV_CONFIG_H -I. -I"/Users/why/work/iFrameExtractor/ffmpeg" -D_ISOC99_SOURCE -D_POSIX_C_SOURCE=200112 -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -DPIC -std=c99 -fomit-frame-pointer -fPIC -g -Wdeclaration-after-statement -Wall -Wno-switch -Wdisabled-optimization -Wpointer-arith -Wredundant-decls -Wno-pointer-sign -Wcast-qual -Wwrite-strings -Wundef -O3 -fno-math-errno -fno-tree-vectorize       -MMD -MF libavformat/seek.d -MT libavformat/seek.o -c -o libavformat/seek.o libavformat/seek.c
  
  /applications/xcode.app/contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc -DHAVE_AV_CONFIG_H -I. -I"/Users/why/work/iFrameExtractor/ffmpeg" -D_ISOC99_SOURCE -D_POSIX_C_SOURCE=200112 -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -DPIC -std=c99 -fomit-frame-pointer -fPIC -g -Wdeclaration-after-statement -Wall -Wno-switch -Wdisabled-optimization -Wpointer-arith -Wredundant-decls -Wno-pointer-sign -Wcast-qual -Wwrite-strings -Wundef -O3 -fno-math-errno -fno-tree-vectorize       -MMD -MF libavformat/utils.d -MT libavformat/utils.o -c -o libavformat/utils.o libavformat/utils.c
  
  libavformat/utils.c: In function ‘parse_date’:
  
  libavformat/utils.c:3100: warning: cast discards qualifiers from pointer target type
  
  /applications/xcode.app/contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc -DHAVE_AV_CONFIG_H -I. -I"/Users/why/work/iFrameExtractor/ffmpeg" -D_ISOC99_SOURCE -D_POSIX_C_SOURCE=200112 -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -DPIC -std=c99 -fomit-frame-pointer -fPIC -g -Wdeclaration-after-statement -Wall -Wno-switch -Wdisabled-optimization -Wpointer-arith -Wredundant-decls -Wno-pointer-sign -Wcast-qual -Wwrite-strings -Wundef -O3 -fno-math-errno -fno-tree-vectorize       -MMD -MF libavformat/avio.d -MT libavformat/avio.o -c -o libavformat/avio.o libavformat/avio.c
  
  /applications/xcode.app/contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc -DHAVE_AV_CONFIG_H -I. -I"/Users/why/work/iFrameExtractor/ffmpeg" -D_ISOC99_SOURCE -D_POSIX_C_SOURCE=200112 -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -DPIC -std=c99 -fomit-frame-pointer -fPIC -g -Wdeclaration-after-statement -Wall -Wno-switch -Wdisabled-optimization -Wpointer-arith -Wredundant-decls -Wno-pointer-sign -Wcast-qual -Wwrite-strings -Wundef -O3 -fno-math-errno -fno-tree-vectorize       -MMD -MF libavformat/aviobuf.d -MT libavformat/aviobuf.o -c -o libavformat/aviobuf.o libavformat/aviobuf.c
  
  libavformat/aviobuf.c: In function ‘url_fdopen’:
  
  libavformat/aviobuf.c:560: warning: passing argument 6 of ‘init_put_byte’ from incompatible pointer type
  
  libavformat/aviobuf.c:560: warning: passing argument 7 of ‘init_put_byte’ from incompatible pointer type
  
  libavformat/aviobuf.c:560: warning: passing argument 8 of ‘init_put_byte’ from incompatible pointer type
  
  /var/folders/59/7srh1dk537s3hr4b2_4k1nxr0000gn/T//cc7qLhBK.s:2662:no such instruction: `eor %ecx, %eax,%eax,ror'
  
  /var/folders/59/7srh1dk537s3hr4b2_4k1nxr0000gn/T//cc7qLhBK.s:2663:no such instruction: `bic %ecx, %ecx,'
  
  /var/folders/59/7srh1dk537s3hr4b2_4k1nxr0000gn/T//cc7qLhBK.s:2664:suffix or operands invalid for `mov'
  
  /var/folders/59/7srh1dk537s3hr4b2_4k1nxr0000gn/T//cc7qLhBK.s:2665:no such instruction: `eor %eax, %eax,%ecx,lsr'
  
      make: *** [libavformat/aviobuf.o] Error 1
  
      mv: rename libavcodec/libavcodec.a to armv7/libavcodec.a: No such file or directory
  
      mv: rename libavformat/libavformat.a to armv7/libavformat.a: No such file or directory
  
      mv: rename libavutil/libavutil.a to armv7/libavutil.a: No such file or directory
  
      mv: rename libswscale/libswscale.a to armv7/libswscale.a: No such file or directory
  
      rm: No match.
  
      rm: No match.
  
      lipo: can't open input file: armv7/libavcodec.a (No such file or directory)
  
      lipo: specifed architecture type (armv7) for file (armv7/libavdevice.a) does not match its cputype (16777223) and cpusubtype (3) (should be cputype (12) and cpusubtype (9))
  
      lipo: can't open input file: armv7/libavformat.a (No such file or directory)
  
      lipo: can't open input file: armv7/libavutil.a (No such file or directory)
  
      lipo: can't open input file: armv7/libswscale.a (No such file or directory)
  
      cp: No match.