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• getting a lot of errors when reading udp stream with avconv

  5 août 2015, par eladm26

  I’m trying to read a udp video stream and I’m getting mostly errors :)
  here is my input and output :

  avconv   -i udp://**.**.**.**:**** output.ts
  
  avconv version 11.4, Copyright (c) 2000-2014 the Libav developers
  
    built on Jul 14 2015 12:43:36 with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04)
  
  [mpeg2video @ 0x25a7060] Invalid frame dimensions 0x0.
  
      Last message repeated 13 times
  
  [mpegts @ 0x2582040] Estimating duration from bitrate, this may be inaccurate
  
  Input #0, mpegts, from 'udp://239.1.1.1:59001':
  
    Duration: N/A, start: 17336.030511, bitrate: 24640 kb/s
  
    Program 3
  
      Stream #0.0[0x31]: Video: mpeg2video (Main), yuv420p, 1920x1080 [PAR 1:1 DAR 16:9], 24000 kb/s, 29.97 fps, 90k tbn, 59.94 tbc
  
      Stream #0.1[0x34](eng): Audio: ac3, 48000 Hz, 5.1, fltp, 448 kb/s
  
      Stream #0.2[0x35](spa): Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s
  
  File 'output.ts' already exists. Overwrite ? [y/N] y
  
  Output #0, mpegts, to 'output.ts':
  
    Metadata:
  
      encoder         : Lavf56.1.0
  
      Stream #0.0: Video: mpeg2video, yuv420p, 1920x1080 [PAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 29.97 fps, 90k tbn, 29.97 tbc
  
      Metadata:
  
        encoder         : Lavc56.1.0 mpeg2video
  
      Stream #0.1(eng): Audio: mp2, 48000 Hz, stereo, s16, 384 kb/s
  
      Metadata:
  
        encoder         : Lavc56.1.0 mp2
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (mpeg2video (native) -> mpeg2video (native))
  
    Stream #0:1 -> #0:1 (ac3 (native) -> mp2 (native))
  
  Press ctrl-c to stop encoding
  
  [mpeg2video @ 0x25c85e0] warning: first frame is no keyframe
  
  Continuity check failed for pid 49 expected 12 got 5 bitrate=3922.8kbits/s
  
  [mpegts @ 0x2582040] Continuity check failed for pid 52 expected 6 got 1
  
  [mpegts @ 0x2582040] Continuity check failed for pid 53 expected 7 got 14
  
  [mpegts @ 0x2582040] Continuity check failed for pid 0 expected 4 got 1
  
  [mpeg2video @ 0x25c85e0] ac-tex damaged at 2 53
  
  [mpeg2video @ 0x25c85e0] 00 motion_type at 19 38
  
  [mpeg2video @ 0x25c85e0] 00 motion_type at 18 54
  
  [mpeg2video @ 0x25c85e0] ac-tex damaged at 1 39
  
  [mpeg2video @ 0x25c85e0] 00 motion_type at 48 55
  
  [mpeg2video @ 0x25c85e0] 00 motion_type at 2 56
  
  [mpeg2video @ 0x25c85e0] 00 motion_type at 17 40
  
  [mpeg2video @ 0x25c85e0] ac-tex damaged at 5 60
  
  [mpeg2video @ 0x25c85e0] 00 motion_type at 1 61
  
  [mpeg2video @ 0x25c85e0] 00 motion_type at 16 41
  
  [mpeg2video @ 0x25c85e0] ac-tex damaged at 15 46
  
  [mpeg2video @ 0x25c85e0] 00 motion_type at 6 62
  
  [mpeg2video @ 0x25c85e0] 00 motion_type at 24 42
  
  [mpeg2video @ 0x25c85e0] 00 motion_type at 16 47
  
  [mpeg2video @ 0x25c85e0] mb incr damaged
  
  [mpeg2video @ 0x25c85e0] ac-tex damaged at 3 44
  
  [mpeg2video @ 0x25c85e0] 00 motion_type at 8 63
  
  [mpeg2video @ 0x25c85e0] 00 motion_type at 11 65
  
  [mpeg2video @ 0x25c85e0] ac-tex damaged at 1 66
  
  [mpeg2video @ 0x25c85e0] invalid mb type in P Frame at 42 50
  
  [mpeg2video @ 0x25c85e0] 00 motion_type at 9 51
  
  [mpeg2video @ 0x25c85e0] ac-tex damaged at 45 67
  
  [mpeg2video @ 0x25c85e0] 00 motion_type at 48 52
  
  [mpeg2video @ 0x25c85e0] MVs not available, ER not possible.
  
  [mpegts @ 0x2582040] PES packet size mismatch
  
      Last message repeated 1 times
  
  [ac3 @ 0x25c8b00] exponent out-of-range
  
  [ac3 @ 0x25c8b00] error decoding the audio block
  
  [mpegts @ 0x2582040] Continuity check failed for pid 49 expected 13 got 5
  
  [mpegts @ 0x2582040] Continuity check failed for pid 52 expected 12 got 14
  
  [mpeg2video @ 0x25c85e0] 00 motion_type at 97 65
  
  [mpeg2video @ 0x25c85e0] 00 motion_type at 1 4
  
  [mpeg2video @ 0x25c85e0] invalid cbp at 18 5
  
  [mpeg2video @ 0x25c85e0] 00 motion_type at 1 6
  
  [mpeg2video @ 0x25c85e0] mb incr damaged
  
  [mpeg2video @ 0x25c85e0] 00 motion_type at 34 8
  
  [mpeg2video @ 0x25c85e0] 00 motion_type at 8 9
  
  [mpeg2video @ 0x25c85e0] 00 motion_type at 6 11
  
  [mpeg2video @ 0x25c85e0] invalid cbp at 5 18
  
  [mpeg2video @ 0x25c85e0] 00 motion_type at 13 19
  
  [mpeg2video @ 0x25c85e0] 00 motion_type at 3 20
  
  [mpeg2video @ 0x25c85e0] 00 motion_type at 16 21
  
  [mpeg2video @ 0x25c85e0] invalid cbp at 3 22
  
  [mpeg2video @ 0x25c85e0] invalid mb type in B Frame at 4 23
  
  [mpeg2video @ 0x25c85e0] invalid mb type in B Frame at 3 24

  I’ve searched stack overflow and couldn’t find any similar.
  maybe it has something to do with avconv cant handle the udp frames fast enough ?
  I lost any hope so any help is very welcomed.

  Thanks.

• I have a file that purports to be "uncompressed mov" that I want to convert to raw using ffmpeg

  9 août 2015, par Lyman Hurd

  I am running Ubuntu. Here is what I receive and also cannot play the movie with vlc or totem, however the sender insists that these files play on a Mac using QuickTime. Thoughts as to what might be wrong ?

  ~/bin/ffmpeg -i movie.mov ffmpeg version N-50051-g8d0757e Copyright (c) 2000-2013 the FFmpeg developers
  
    built on Aug  8 2015 18:44:04 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5)
  
    configuration: --enable-libvpx --enable-libx264 --prefix=/home/lhurd --enable-gpl
  
    libavutil      52. 17.102 / 52. 17.102
  
    libavcodec     54. 92.100 / 54. 92.100
  
    libavformat    54. 63.100 / 54. 63.100
  
    libavdevice    54.  3.103 / 54.  3.103
  
    libavfilter     3. 38.103 /  3. 38.103
  
    libswscale      2.  2.100 /  2.  2.100
  
    libswresample   0. 17.102 /  0. 17.102
  
    libpostproc    52.  2.100 / 52.  2.100
  
  movie.mov: Invalid data found when processing input

  Here’s an "od -c" of the head which at least shows that the file isn’t raw :

  0000000  \0 005 026  \a  \0 002  \0  \0   M   a   c       O   S           X
  
  0000020                                  \0 002  \0  \0  \0  \t  \0  \0
  
  0000040  \0   2  \0  \0  \0   F  \0  \0  \0 002  \0  \0  \0   x  \0  \0
  
  0000060  \0  \0   M   o   o   V   T   V   O   D  \0  \0  \0  \0  \0  \0
  
  0000100  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0
  
  0000120  \0  \0  \0  \0   A   T   T   R  \0  \0  \0  \0  \0  \0  \0   x
  
  0000140  \0  \0  \0   x  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0
  
  0000160  \0  \0  \0  \0  \0  \0  \0  \0
  
  0000170

• How can I fix a damaged MP4 ?

  29 juillet 2015, par d3pd

  I have a video of just under an hour recorded but it appears to be damaged somehow. The file format is h264 MP4 and the file size is 2.3 GB, so I’m confident that the information is there, just that the file format is damaged. How could I approach fixing it ?

  So far, I’ve tried a simple ffmpeg copy operation :

  >ffmpeg -i video_28_07_2015_15_16_05.mp4  -c copy out.mp4
  
  ffmpeg version N-73895-g323ec6b Copyright (c) 2000-2015 the FFmpeg developers
  
    built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04)
  
    configuration: --extra-libs=-ldl --prefix=/opt/ffmpeg --enable-avresample --disable-debug --enable-nonfree --enable-gpl --enable-version3 --enable-libopencore-amrnb --enable-libopencore-amrwb --disable-decoder=amrnb --disable-decoder=amrwb --enable-libpulse --enable-libdcadec --enable-libx264 --enable-libx265 --enable-libfdk-aac --enable-libvorbis --enable-libmp3lame --enable-libopus --enable-libvpx --enable-libspeex --enable-libass --enable-avisynth --enable-libsoxr --enable-libxvid --enable-libvo-aacenc --enable-libvidstab
  
    libavutil      54. 28.100 / 54. 28.100
  
    libavcodec     56. 50.101 / 56. 50.101
  
    libavformat    56. 40.101 / 56. 40.101
  
    libavdevice    56.  4.100 / 56.  4.100
  
    libavfilter     5. 25.100 /  5. 25.100
  
    libavresample   2.  1.  0 /  2.  1.  0
  
    libswscale      3.  1.101 /  3.  1.101
  
    libswresample   1.  2.101 /  1.  2.101
  
    libpostproc    53.  3.100 / 53.  3.100
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x2a78e00] Could not find codec parameters for stream 0 (Video: h264 (avc1 / 0x31637661), none, 1280x720): unspecified pixel format
  
  Consider increasing the value for the 'analyzeduration' and 'probesize' options
  
  video_28_07_2015_15_16_05.mp4: could not find codec parameters
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'video_28_07_2015_15_16_05.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 0
  
      compatible_brands: isom3gp4
  
      creation_time   : 2015-07-28 14:12:50
  
    Duration: 00:56:43.53, bitrate: 5345 kb/s
  
      Stream #0:0(eng): Video: h264 (avc1 / 0x31637661), none, 1280x720, SAR 1:1 DAR 16:9, 30 fps, 90k tbr, 90k tbn, 180k tbc (default)
  
      Metadata:
  
        creation_time   : 2015-07-28 14:12:50
  
        handler_name    : VideoHandle
  
  [mp4 @ 0x2a7b260] Codec for stream 0 does not use global headers but container format requires global headers
  
  Output #0, mp4, to 'out.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 0
  
      compatible_brands: isom3gp4
  
      encoder         : Lavf56.40.101
  
      Stream #0:0(eng): Video: h264 ([33][0][0][0] / 0x0021), none, 1280x720 [SAR 1:1 DAR 16:9], q=2-31, 30 fps, 90k tbr, 90k tbn, 90k tbc (default)
  
      Metadata:
  
        creation_time   : 2015-07-28 14:12:50
  
        handler_name    : VideoHandle
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (copy)
  
  Press [q] to stop, [?] for help
  
  frame=    0 fps=0.0 q=-1.0 Lsize=       0kB time=00:00:00.00 bitrate=N/A    
  
  video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
  
  Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)

  I have no idea of what to try next and would appreciate suggestions and guidance.