[FFmpeg-trac] #5512(undetermined:closed): Audio Out of Sync after transcode
FFmpeg
trac at avcodec.org
Tue Apr 13 21:42:52 EEST 2021
#5512: Audio Out of Sync after transcode
-------------------------------------+-------------------------------------
Reporter: ronag | Owner:
Type: defect | Status: closed
Priority: normal | Component:
| undetermined
Version: git-master | Resolution: invalid
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Changes (by enevills):
* status: new => closed
* resolution: => invalid
Comment:
I know this is old, and solved a bit ago.
This isn't an FFmpeg issue. I found out applications using Apple's
deprecated QTKit assume 2112 priming samples. rather than reading the
header. Most modern encoders seem to use 1024 samples. More info here:
[https://developer.apple.com/library/archive/documentation/QuickTime/QTFF/QTFFAppenG/QTFFAppenG.html]
I think QTKit has lots of 32-bit code in it so it's finally getting phased
out and becoming a non-issue.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/5512#comment:25>
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