[Libav-user] Hard time encoding AAC (works for MP3) - what settings are needed?
jesper at taxboel.dk
Thu Aug 27 15:02:13 EEST 2020
Den ons. 26. aug. 2020 kl. 23.02 skrev Jesper Taxbøl <jesper at taxboel.dk>:
> Den ons. 26. aug. 2020 kl. 22.35 skrev Carl Eugen Hoyos <
> ceffmpeg at gmail.com>:
> > Am Mi., 26. Aug. 2020 um 22:01 Uhr schrieb Jesper Taxbøl <
> jesper at taxboel.dk>:
> > >
> > > I am struggling to make AAC encoding work with libav.
> > (Your email is practically unreadable.)
> > Contrary to mp3, there is no "raw" aac, you have to choose a muxer
> > like adts or mov.
> > (This is not 100% accurate, but like most other software, FFmpeg
> > does not support reading raw aac, faad might work.)
> > Carl Eugen
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> I am sorry about the confusion of my writing.
> It seems I have understood some packetization wrong. Perhaps you can help
> me understand.
> When I run
> ffmpeg -i someaudiofile.mp3 -t 3 out.aac
> I was under the impression that the output would be raw aac without using
> a muxer?
> How do I identify the muxer used in this case?
> I basically want to mimic that command from my C++ program.
> Kind regards
Through search I found a patch that I could draw some inspiration from.
Now the repo is updated with an ADTS muxer and the output can be played
Thank you for the hints.
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