[FFmpeg-user] Summing 2 stereo channels to mono (2 channels)

Dielson Sales de Carvalho dielsonsales at gmail.com
Fri Jul 29 08:02:08 CEST 2011

I'm almost sure you can do that using "-ac 1" (1 audio channel) as a
parameter. The result will be a mix of both channels.

Dielson Sales de Carvalho
Linux User #525558
Curriculo Lattes <http://lattes.cnpq.br/5152369705533488>

2011/7/26 dcoffey3296 <dan_coffey at harvard.edu>

> Hello,
> I have searched all over the internet to find an answer to this question,
> but no definitive answer- just a lot of "i don't think so".  I am hoping
> that someone will read this and tell me it's simple!!
> I have a .mov (XDCAM EX) with 2 channels of audio - separated left and
> right.  My goal is to have the resulting h.264 (.mp4) output with a mono
> mix
> of both channels in both ears (left and right are the same).
> Please let me know if this is possible, I am trying to build an automated
> workflow.  I know this is possible in sox or mencoder but i would prefer to
> keep this to as few commands as possible.
> Thank you for your help!
> --
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