[FFmpeg-trac] #1213(undetermined:new): Ogg: video time stamps start incorrectly, cannot transcode to AVI

[FFmpeg]

#1213: Ogg: video time stamps start incorrectly, cannot transcode to AVI
-------------------------------------+-------------------------------------
               Reporter:  reimar     |                  Owner:
                   Type:  defect     |                 Status:  new
               Priority:  normal     |              Component:
                Version:             |  undetermined
  unspecified                        |               Keywords:
             Blocked By:             |               Blocking:
Reproduced by developer:  0          |  Analyzed by developer:  0
-------------------------------------+-------------------------------------
 I am not sure whether this is a broken file or whether the ogg demuxer
 fills in bogus video time stamps.
 The issue here is that audio starts with huge time stamps while video
 starts with 0.
 This was originally reported as a Debian bug because MPlayer has issues
 handling it: "Bug#668543: mplayer: ogv video freezes with DRI failure".
 For FFmpeg, this results in an actually error when transcoding to AVI
 (though this can probably be worked around without fixing the underlying
 Ogg demuxer issue, please only close if the Ogg demuxer has been fixed or
 it is sure the file is too broken to change the Ogg demuxer to work nicely
 with it):
 ffmpeg -i broken.ogv out.avi
 ffmpeg version N-39755-g3bb9889 Copyright (c) 2000-2012 the FFmpeg
 developers
   built on Apr 14 2012 00:47:46 with gcc 4.6.3
   configuration: --enable-gpl
   libavutil      51. 46.100 / 51. 46.100
   libavcodec     54. 14.101 / 54. 14.101
   libavformat    54.  3.100 / 54.  3.100
   libavdevice    53.  4.100 / 53.  4.100
   libavfilter     2. 67.101 /  2. 67.101
   libswscale      2.  1.100 /  2.  1.100
   libswresample   0. 11.100 /  0. 11.100
   libpostproc    52.  0.100 / 52.  0.100
 [ogg @ 0x1990080] Broken file, keyframe not correctly marked.
 Input #0, ogg, from 'broken.ogv':
   Duration: 09:11:03.74, start: 0.000000, bitrate: 0 kb/s
     Stream #0:0: Data: none
     Stream #0:1: Video: theora, yuv420p, 720x480 [SAR 8:9 DAR 4:3], 29.97
 fps, 29.97 tbr, 29.97 tbn, 29.97 tbc
     Stream #0:2: Audio: vorbis, 48000 Hz, stereo, s16, 224 kb/s
     Metadata:
       TITLE           : LAC 2012 - High Quality
       LOCATION        : CCRMA, Stanford University, CA, US
       ORGANIZATION    : Linux Audio Conference 2012
       LICENSE         : CC
       ENCODER         : ffmpeg2theora-0.28+svn18224M
 w:720 h:480 pixfmt:yuv420p tb:1/1000000 sar:8/9 sws_param:flags=2
 Incompatible sample format 's16' for codec 'ac3', auto-selecting format
 'flt'
 Output #0, avi, to 'out.avi':
   Metadata:
     ISFT            : Lavf54.3.100
     Stream #0:0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 720x480 [SAR
 8:9 DAR 4:3], q=2-31, 200 kb/s, 29.97 tbn, 29.97 tbc
     Stream #0:1: Audio: ac3 ([0] [0][0] / 0x2000), 48000 Hz, stereo, flt,
 192 kb/s
     Metadata:
       TITLE           : LAC 2012 - High Quality
       LOCATION        : CCRMA, Stanford University, CA, US
       ORGANIZATION    : Linux Audio Conference 2012
       LICENSE         : CC
       ENCODER         : ffmpeg2theora-0.28+svn18224M
 Stream mapping:
   Stream #0:1 -> #0:0 (theora -> mpeg4)
   Stream #0:2 -> #0:1 (vorbis -> ac3)
 Press [q] to stop, [?] for help
 [theora @ 0x1bf87c0] vp3: first frame not a keyframe
 [avi @ 0x19dcfc0] Too large number of skiped frames 1032161
 av_interleaved_write_frame(): Invalid argument

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1213>
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