[Libav-user] Hard time encoding AAC (works for MP3) - what settings are needed?

[Carl Eugen Hoyos]

Am Mi., 26. Aug. 2020 um 23:06 Uhr schrieb Jesper Taxbøl <jesper at taxboel.dk>:

> 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?

Definitely not.

The following produces a raw aac file, such files do exist, faad decodes
such files if I remember correctly, FFmpeg does not support reading them:
$ ffmpeg -i input -acodec aac -f rawvideo -map a:0 out.aac

Carl Eugen