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Thread: ffmpeg not editing video file

  1. #1
    Join Date
    Aug 2013
    London, UK
    Ubuntu 16.04 Xenial Xerus

    ffmpeg not editing video file

    I have an mpeg ts file giving playback problems.

    Recorded from a set top box VLC freezes after around 90 seconds as does a hardware video player I have.

    However my Sony Bravia built in media player views it fine.

    I have tried to get ffmpeg to cut out the starting 2 minutes of a video file but it freezes after a short while.

    The following is the output from ffmpeg, same with avconv;

    geoff@mercury:~/.gvfs/SFTP for root on pi/media/iomegaExt4/video/TV Series/MrS$ avconv -i MrS-01.mpg
    avconv version 0.8.9-4:0.8.9-0ubuntu0.12.04.1, Copyright (c) 2000-2013 the Libav developers
    built on Nov 9 2013 19:12:07 with gcc 4.6.3
    [mpeg2video @ 0x82415a0] mpeg_decode_postinit() failure
    Last message repeated 10 times
    [mpegts @ 0x823c240] max_analyze_duration reached
    [mpegts @ 0x823c240] PES packet size mismatch
    Last message repeated 1 times
    Input #0, mpegts, from 'MrS-01.mpg':
    Duration: N/A, start: 63770.130756, bitrate: N/A
    Program 4164
    service_name : BBC ONE Lon
    Stream #0.0[0x65]: Video: mpeg2video (Main), yuv420p, 720x576 [PAR 64:45 DAR 16:9], 15000 kb/s, 26.94 fps, 25 tbr, 90k tbn, 50 tbc
    Stream #0.1[0x66](eng): Audio: mp2, 48000 Hz, stereo, s16, 256 kb/s
    Stream #0.2[0x6a](eng): Audio: mp2, 48000 Hz, mono, s16, 64 kb/s (visual impaired)
    Stream #0.3[0x69](eng): Subtitle: dvbsub
    Program 8261
    service_name : ITV
    Stream #0.4[0x6a5]: Video: mpeg2video, 90k tbn
    Stream #0.6[0x6a6](eng): Audio: mp3, 0 channels
    Stream #0.5[0x6a7](eng): Audio: mp3, 0 channels (visual impaired)
    Stream #0.7[0x6c3](eng): Subtitle: dvbsub
    At least one output file must be specified
    Any advice as to how I could edit out the first 2 mins as I am sure it will play fine after that.


  2. #2
    Join Date
    Sep 2006

    Re: ffmpeg not editing video file

    Please download a recent build of ffmpeg (the real one, not the fake junk in the repo) and see if the issue still occurs:

    wget$(date +"%F").tar.gz
    tar xzvf ffmpeg.static.32bit.$(date +"%F").tar.gz
    Then run it (notice the ./ before ffmpeg):
    ./ffmpeg -ss 120 -i MrS-01.mpg -codec copy -map 0 output.mpg


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