[FFmpeg-trac] #9775(avformat:closed): incorrect duration when start not zero
FFmpeg
trac at avcodec.org
Fri Sep 9 17:01:25 EEST 2022
#9775: incorrect duration when start not zero
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Reporter: delpeck | Owner: (none)
Type: defect | Status: closed
Priority: normal | Component: avformat
Version: git-master | Resolution: fixed
Keywords: mov duration | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Comment (by Balling):
So, no, it does not fix remainder. Two bugs are opened about it: #9140,
#7828. Someone needs to fix this thing, fixed by Chromium. And BTW,
102400samples_qt-lc-aac.m4a is also not correctly handled: iTunSMPB says
how much samples should be deleted in the start (those are deleted
correctly) and how much in the end, ffmpeg does not delete those (Apple
style remainder). Duration is 0x19000 samples from 4th actual subfield of
iTunSMPB, so 102400 samples. Those remove ALL silence in the end. See
https://imgur.com/a/GWbIxjA
'''2.342993 duration is absolutely wrong, it is 2.321973 or 2.321972.'''
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Ticket URL: <https://trac.ffmpeg.org/ticket/9775#comment:8>
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