[FFmpeg-trac] #2782(avformat:closed): aac - Malformed AAC bitstream - incorrectly fixed with -bsf:a aac_adtstoasc' option
FFmpeg
trac at avcodec.org
Tue Jul 16 11:57:09 CEST 2013
#2782: aac - Malformed AAC bitstream - incorrectly fixed with -bsf:a
aac_adtstoasc' option
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Reporter: feelart | Owner:
Type: defect | Status: closed
Priority: normal | Component: avformat
Version: git-master | Resolution: worksforme
Keywords: aac mov | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Comment (by cehoyos):
Replying to [comment:6 saste]:
> Replying to [comment:5 cehoyos]:
> > Replying to [comment:4 feelart]:
> >
> > I will close this ticket since I don't see much indication that there
is anything that should (or can) be fixed in FFmpeg, feel free to reopen
if you can add information that indicates I am wrong.
Do you also disagree with the above? I absolutely may miss something but I
was unable to reproduce any problems with the original sample and the
original command lines.
> > > Same kind of fatal error both with
> > > {{{
> > > ffmpeg -i alice.aac -bsf:a aac_adtstoasc -vol 312 test.aac
> > > or
> > > ffmpeg -y -i alice.aac -bsf:a aac_adtstoasc -af volume=1.5 test.aac
> > > }}}
> >
> > bitstreamfilters (-bsf) only work with -codec copy so these command
lines make no sense.
>
> That's not correct, bitstream filters are applied *after* filtering and
*before* sending the packet to the muxer.
(I missed that the bitstream filters also work without -codec copy but
note that for the -codec copy case there is no filtering, so your
description does not apply for the typical use-case.)
Do the command lines actually make sense? I thought the aac_adtstoasc
bitstream filter is only useful when stream-copying from adts to mov.
--
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2782#comment:7>
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