[FFmpeg-user] speex to ac3 in mkv

[Carl Eugen Hoyos]

Madovsky <infos <at> madovsky.org> writes:

> ffmpeg -i rtmp://server/app/live -acodec ac3 -ar 48000 
> -b:a 128k -vcodec copy -y output.mkv

Please always add complete, uncut console output when 
posting failing command lines here.

Do the following also fail?
$ ffmpeg -i rtmp://server/app/live -ar 48000 out.ac3
$ ffmpeg -i rtmp://server/app/live -ar 48000 out.mp2

Carl Eugen