[FFmpeg-user] speex to ac3 in mkv

[Carl Eugen Hoyos]

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

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

> ffmpeg -i "rtmp://server/app/live live=1" -acodec ac3 
> -ar 48000 -b:a 128k -vcodec copy -y output.mkv

Please find out what the difference is between the two commands.

Does it fail if you add -ab 128 to the first command?
Does the second work with -vn?

Carl Eugen