[libav-tools] ffmpeg/avconv: negative bitrate
franke.daniel at gmail.com
Thu Dec 27 01:46:29 CET 2012
I hope this is the right place for my problem.
Generally I have no trouble backing my DVDs up to a NAS using ffmpeg/avconv
through k9copy, but one set of DVDs gives me a headache due to a reported
duration of 1 sec and a negative bitrate. During the copy process everything
seems fine, but when copy is complete, the problem becomes obvious:
$ avconv -i unknown.mpg
avconv version 0.8.4-4:0.8.4-0ubuntu0.12.04.1, Copyright (c) 2000-2012 the
built on Nov 6 2012 16:50:25 with gcc 4.6.3
[mpeg @ 0x99e7240] max_analyze_duration reached
Input #0, mpeg, from 'unknown.mpg':
Duration: 00:00:46.72, start: 0.287267, bitrate: 6461 kb/s
Duration: 00:16:02.68, start: 0.287267, bitrate: 5158 kb/s
Duration: 00:39:47.36, start: 0.287267, bitrate: 5439 kb/s
Duration: 00:00:01.05, start: 0.287267, bitrate: -2147483 kb/s
Stream #0.0[0x1e0]: Video: mpeg2video (Main), yuv420p, 720x576 [PAR 64:45
DAR 16:9], 8500 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc
Stream #0.1[0x80]: Audio: ac3, 48000 Hz, 5.1, s16, 448 kb/s
Stream #0.2[0x22]: Subtitle: dvdsub
Stream #0.3[0x21]: Subtitle: dvdsub
$ ls -lh unknown.mpg
-rw-r--r-- 1 daniel users 1.6G Dec 27 01:24 unknown.mpg
Interestingly, XINE gives a total duration of ~22 minutes when showing the
.mpg (actual runtime is ~41 minutes), but other players, in particular the
Plex Media Server and client which I use for everything else with that NAS,
are picky about this and refuse to handle the files in any usable way.
Is this a known problem? Any suggestions how to work aorund or fix this issue?
P.S. In case it matters, the problem occurs with DVDs of the TV serias ALIAS.
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