Opened 16 years ago
Last modified 16 years ago
#969 new defect
A52 output not aligned to frame-boundaries when using -dumpaudio with -chapter
| Reported by: | Owned by: | reimar | |
|---|---|---|---|
| Priority: | normal | Component: | ao |
| Version: | HEAD | Severity: | normal |
| Keywords: | Cc: | rasher@… | |
| Blocked By: | Blocking: | ||
| Reproduced by developer: | no | Analyzed by developer: | no |
Description
When trying to extract the audio for a DVD, writing one file per chapter, I noticed that the resulting A52 files weren't quite right. They would play in MPlayer, but many other tools didn't accept them. A little more investigation reveals that the files didn't start at a frame boundary (0x0b 0x77), so I assume that MPlayer was skipping the first bytes up to the first frame boundary.
The command I used was "mplayer -vo null -dumpaudio -chapter 3-3 dvd://1" for chapter 3, etc.
I believe MPlayer ought to seek to the nearest frame boundary to ensure that the output is a A52 stream, starting at a frame boundary.
This is admittedly with the Ubuntu package of MPlayer "1.0~rc1-0ubuntu13.1". I'll try with SVN HEAD later, hopefully within a few hours, if this is already fixed, I apologize.
Change History (3)
comment:1 by , 16 years ago
| Cc: | added |
|---|
comment:2 by , 16 years ago
| Version: | 1.0rc1 → HEAD |
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comment:3 by , 16 years ago
This does not happen with -demuxer lavf as suggested by uau on #mplayerdev.
I'm getting same behavior with dev-SVN-r25530-4.1.3, changing version to HEAD.