[FFmpeg-user] mono or stereo? ffmpeg converts or phone?

Carl Eugen Hoyos cehoyos at ag.or.at
Mon Apr 28 09:04:37 CEST 2014

Sean Darcy <seandarcy2 <at> gmail.com> writes:

> So for a bitrate of let's say 48000, am I better off 
> converting to mono in ffmpeg ( -ac 1 ) or leaving it 
> stereo and letting the phone convert it?

You may be better off (and if playback is only mono, you 
don't loose anything) but please understand that you cannot 
double the quality / half the bitrate.
The chosen encoder is much more important, if your phone 
does not support opus, make sure to choose libfdk-aac.

Carl Eugen

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