[FFmpeg-user] Help with extracting audio from MP4

[Carl Eugen Hoyos]

2017-01-19 5:40 GMT+01:00 Peter <peter777 at users.sourceforge.net>:
> If I simply supply an output filename, it results in the codec of
> MPEG Audio Layer 1

That's impossible, no layer 1 encoder exists for FFmpeg.

Maybe you are searching for something like the following?
$ ffmpeg -i 16187821_363927127308754_4400528164682465280_n.mp4
-acodec copy out.aac

Carl Eugen