[FFmpeg-devel] [PATCH 5/5] avformat/mp3dec: alwas prefer xing toc for seeking if present

[Carl Eugen Hoyos]

wm4 <nfxjfg <at> googlemail.com> writes:

> > > > this breaks seeking in CBR files with a xing toc
> > > > 
> > > > see: https://trac.ffmpeg.org/ticket/2590 for testcase/example

> From what I can tell, this can't be used to reproduce the problem.

I tested the following:
$ ffmpeg -ss 50 -i Underworld_sample_cut.mp3 -t 10 out.wav
ffmpeg version 1.0 Copyright (c) 2000-2012 the FFmpeg developers
  built on Feb 10 2013 11:28:07 with gcc 4.7 (SUSE Linux)
  configuration: --enable-gpl
  libavutil      51. 73.101 / 51. 73.101
  libavcodec     54. 59.100 / 54. 59.100
  libavformat    54. 29.104 / 54. 29.104
  libavdevice    54.  2.101 / 54.  2.101
  libavfilter     3. 17.100 /  3. 17.100
  libswscale      2.  1.101 /  2.  1.101
  libswresample   0. 15.100 /  0. 15.100
  libpostproc    52.  0.100 / 52.  0.100
[mp3 @ 0x2b72280] max_analyze_duration 5000000 reached at 5015510
Input #0, mp3, from 'Underworld_sample_cut.mp3':
  Metadata:
    artist          : Lilith
    album           : Underworld
    genre           : Gothic Metal
    date            : 2007
  Duration: 00:42:36.63, start: 0.000000, bitrate: 4 kb/s
    Stream #0:0: Audio: mp3, 44100 Hz, stereo, s16, 192 kb/s
Output #0, wav, to 'out.wav':
  Metadata:
    artist          : Lilith
    album           : Underworld
    genre           : Gothic Metal
    date            : 2007
    encoder         : Lavf54.29.104
    Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, stereo,
s16, 1411 kb/s
Stream mapping:
  Stream #0:0 -> #0:0 (mp3 -> pcm_s16le)
Press [q] to stop, [?] for help
size=    5936kB time=00:00:10.02 bitrate=4851.8kbits/s
video:0kB audio:5936kB subtitle:0 global headers:0kB muxing overhead 0.000757%

The output file does not start at 0:50 and is too long.

Carl Eugen