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• Building ffmpeg iOS libraries for armv7, armv7s, arm64, i386 and universal

  4 février 2015, par sandy

  I have seen several scripts to build FFmpeg API for armv7, 7s and i386 but couldn’t find anything which would work for armv64 as well. Some of the answers on other threads of this forum suggested to prepare a separate library for arm64 but it does not work well with rest of the architectures. Hence I need a script which can work for all the supported architectures for iOS including armv7, armv7s, armv64 and i386.

• ffmpeg codec error on audio file

  31 juillet 2013, par foosion

  I have some m4a files that will not play properly using the google music player app on my Android phone, although they play fine on most everything else. I thought the problem was the container and thought "ffmpeg -i bad.m4a -codec copy good.m4a" might help. However, when I run on the problem files, I get error messages. Running this command on non-problem files has not generated error messages.

  Please suggest ways to fix (other than re-encoding).

      [D:\temp\dl]ffmpeg -i "01 - The Day Begins.m4a" -codec copy day.m4a
  
  ffmpeg version N-55066-gc96b3ae Copyright (c) 2000-2013 the FFmpeg developers
  
    built on Jul 29 2013 18:05:45 with gcc 4.7.3 (GCC)
  
    configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av
  
  isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab
  
  le-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetyp
  
  e --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --ena
  
  ble-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-l
  
  ibopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libsp
  
  eex --enable-libtheora --enable-libtwolame --enable-libvo-aacenc --enable-libvo-
  
  amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --
  
  enable-libxvid --enable-zlib
  
    libavutil      52. 40.100 / 52. 40.100
  
    libavcodec     55. 19.100 / 55. 19.100
  
    libavformat    55. 12.102 / 55. 12.102
  
    libavdevice    55.  3.100 / 55.  3.100
  
    libavfilter     3. 82.100 /  3. 82.100
  
    libswscale      2.  4.100 /  2.  4.100
  
    libswresample   0. 17.103 /  0. 17.103
  
    libpostproc    52.  3.100 / 52.  3.100
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 00000000002da300] stream 0, timescale not set
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '01 - The Day Begins.m4a':
  
    Metadata:
  
      major_brand     : m4a
  
      minor_version   : 0
  
      compatible_brands: M4A mp4isom
  
      creation_time   : 2003-07-06 20:27:46
  
      track           : 1
  
      genre           : Rock
  
      title           : The Day Begins
  
      artist          : Moody Blues
  
      album           : Days of Future Passed
  
      date            : 1967
  
    Duration: 00:05:50.83, start: 0.000000, bitrate: 166 kb/s
  
      Stream #0:0(eng): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 15
  
  9 kb/s
  
      Metadata:
  
        creation_time   : 2003-07-06 20:27:46
  
        handler_name    : Apple Sound Media Handler
  
      Stream #0:1(eng): Data: none (mp4s / 0x7334706D)
  
      Metadata:
  
        creation_time   : 2003-07-06 20:27:46
  
        handler_name    : Apple MPEG-4 Scene Media Handler
  
      Stream #0:2(eng): Data: none (mp4s / 0x7334706D)
  
      Metadata:
  
        creation_time   : 2003-07-06 20:27:46
  
        handler_name    : Apple MPEG-4 ODSM Media Handler
  
      Stream #0:3: Video: png, rgb24, 240x240 [SAR 2834:2834 DAR 1:1], 90k tbr, 90
  
  k tbn, 90k tbc
  
  [ipod @ 000000000031dd40] track 0: could not find tag, codec not currently suppo
  
  rted in container
  
  Output #0, ipod, to 'day.m4a':
  
    Metadata:
  
      major_brand     : m4a
  
      minor_version   : 0
  
      compatible_brands: M4A mp4isom
  
      date            : 1967
  
      track           : 1
  
      genre           : Rock
  
      title           : The Day Begins
  
      artist          : Moody Blues
  
      album           : Days of Future Passed
  
      encoder         : Lavf55.12.102
  
      Stream #0:0: Video: png, rgb24, 240x240 [SAR 2834:2834 DAR 1:1], q=2-31, 90k
  
   tbn, 90k tbc
  
      Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, 159 kb/s
  
  
  
      Metadata:
  
        creation_time   : 2003-07-06 20:27:46
  
        handler_name    : Apple Sound Media Handler
  
  Stream mapping:
  
    Stream #0:3 -> #0:0 (copy)
  
    Stream #0:0 -> #0:1 (copy)
  
  Could not write header for output file #0 (incorrect codec parameters ?): Error
  
  number -1 occurred

• ffmpeg - Concat multi mp4 files with audio file not working

  29 mars 2017, par Thanh Dao

  I follow this thread to concat multi mp4 files with audio file.
  But its not success. Have a lots error notifications had been displayed. I dont know how to fix it.
  Below is my command :

  "ffmpeg" -f concat -safe 0 \
  
  -i /path/to/text.txt \
  
  -i /path/to/audio.mp3 -vsync vfr -vf scale="640:640" -pix_fmt yuv420p \
  
  /path/to/output.mp4 2>&1

  The detail contents of text.txt

  file '/path/to/file1.mp4'
  
  file '/path/to/file2.mp4'
  
  file '/path/to/file3.mp4'
  
  file '/path/to/file4.mp4'
  
  file '/path/to/file5.mp4'
  
  file '/path/to/file6.mp4'
  
  file '/path/to/file7.mp4'
  
  file '/path/to/file8.mp4'
  
  file '/path/to/file9.mp4'
  
  file '/path/to/file10.mp4'
  
  file '/path/to/file11.mp4'
  
  file '/path/to/file12.mp4'
  
  file '/path/to/file13.mp4'
  
  file '/path/to/file14.mp4'
  
  file '/path/to/file15.mp4'
  
  file '/path/to/file16.mp4'
  
  file '/path/to/file17.mp4'
  
  file '/path/to/file18.mp4'

  And some lines of output errors :

  [concat @ 0x357e620] DTS 192000 < 229888 out of order
  
  [h264 @ 0x36920e0] top block unavailable for requested intra mode -1
  
  [h264 @ 0x36920e0] error while decoding MB 32 0
  
  [h264 @ 0x36920e0] concealing 2025 DC, 2025 AC, 2025 MV errors in I frame
  
  [h264 @ 0x36b7a80] concealing 1449 DC, 1449 AC, 1449 MV errors in P frame
  
  [h264 @ 0x36ff440] corrupted macroblock 26 1 (total_coeff=-1)
  
  [h264 @ 0x36ff440] error while decoding MB 26 1
  
  [h264 @ 0x36ff440] concealing 2003 DC, 2003 AC, 2003 MV errors in P frame
  
  [h264 @ 0x371af40] concealing 1456 DC, 1456 AC, 1456 MV errors in P frame
  
  [h264 @ 0x3736a40] ref 5 overflow
  
  [h264 @ 0x3736a40] error while decoding MB 1 1
  
  [h264 @ 0x3736a40] concealing 2025 DC, 2025 AC, 2025 MV errors in P frame
  
  [h264 @ 0x3752520] concealing 1449 DC, 1449 AC, 1449 MV errors in P frame
  
  [h264 @ 0x376dfa0] P sub_mb_type 8 out of range at 2 1
  
  [h264 @ 0x376dfa0] error while decoding MB 2 1
  
  [h264 @ 0x376dfa0] concealing 2025 DC, 2025 AC, 2025 MV errors in P frame
  
  [h264 @ 0x37a55a0] ref 6 overflow
  
  [h264 @ 0x37a55a0] error while decoding MB 3 1
  
  [h264 @ 0x37a55a0] concealing 2025 DC, 2025 AC, 2025 MV errors in P frame
  
  [h264 @ 0x3789aa0] concealing 1449 DC, 1449 AC, 1449 MV errors in P frame
  
  [h264 @ 0x36b7a80] ref 5 overflow
  
  [h264 @ 0x36b7a80] error while decoding MB 4 1
  
  [h264 @ 0x36b7a80] concealing 2025 DC, 2025 AC, 2025 MV errors in P frame
  
  [h264 @ 0x36920e0] concealing 1449 DC, 1449 AC, 1449 MV errors in P frame