Converting 6-channel audio to 2-channel

Question

MP3

Good evening!
I ran into a problem: I downloaded a movie, it has a 6-channel track. there is a need to convert the video for the tablet, and this track is automatically converted to 2-channel and two-thirds of the sounds disappear. I have a separate audio track file in .ac3. Tell me, is it possible to convert it to mp3 (for example) without losing sounds?
Thank you!

Answer 1

ffmpeg is fine for you - it downmixes itself in stereo
ffmpeg -i input.mkv -ab 128k -ac 2 result.mp4

Answer 2

Usually the sound is converted separately. For example, you can use m4a_to_mp3_converter or Free_AAC_to_MP3.
It is more correct (and with more control) to use advanced level editors Adobe Audition, Sonar .
Naturally, in both cases, the track is taken from the file first.

Answer 3

vlc