Summary: | media-video/libav-0.8_pre20111222 produces white noise with part of some music files | ||
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Product: | Gentoo Linux | Reporter: | Casper Ti. Vector <CasperVector> |
Component: | Current packages | Assignee: | Gentoo Media-video project <media-video> |
Status: | RESOLVED FIXED | ||
Severity: | normal | CC: | CasperVector |
Priority: | Normal | ||
Version: | unspecified | ||
Hardware: | All | ||
OS: | Linux | ||
Whiteboard: | |||
Package list: | Runtime testing required: | --- | |
Attachments: |
Excerpt from one of the affected music files
Another excerpt from the same music file |
Description
Casper Ti. Vector
2011-12-23 14:01:03 UTC
Created attachment 296743 [details]
Excerpt from one of the affected music files
Created attachment 297029 [details]
Another excerpt from the same music file
(In reply to comment #2) Now I find that mp3splt(1) can retain the "abnormality" of the affected files. This excerpt is made with mp3splt(1), and should be able to trigger the noise when played with a buggy version (like 0.8_pre20111222) of libav. This file also consists of an "abnormal" part and a normal part. When played with avplay(1), the following is printed: % avplay bug_sample_rev.mp3 avplay version 0.7, Copyright (c) 2003-2011 the Libav developers built on Dec 27 2011 02:20:21 with gcc 4.5.3 [mp3 @ 0xc7d4e0] overread, skip -7 enddists: -5 -5 [mp3 @ 0xc7d4e0] overread, skip -8 enddists: -5 -5 [mp3 @ 0xc46b80] Estimating duration from bitrate, this may be inaccurate Input #0, mp3, from 'bug_sample_rev.mp3': Metadata: composer : Johann Sebastian Bach title : BWV 988, 9. Variatio 8 a 2 Clav artist : Glenn Herbert Gould album : Bach: The Goldberg Variations (1955) date : 2002 track : 1 genre : Classical Duration: 00:00:01.05, start: 0.000000, bitrate: 256 kb/s Stream #0.0: Audio: mp3, 44100 Hz, stereo, s16, 256 kb/s [mp3 @ 0xc7d4e0] overread, skip -7 enddists: -5 -5 [mp3 @ 0xc7d4e0] overread, skip -8 enddists: -5 -5 [mp3 @ 0xc7d4e0] invalid new backstep -1 0KB sq= 0B f=0/0 ^C 1.02 A-V: 0.000 s:0.0 aq= 0KB vq= 0KB sq= 0B f=0/0 Not knowing why, but this seems to be resolved with media-video/libav-0.8 Good to know |