I'm using audioSprite that uses ffmpeg for encoding. I need to make mono files in order to reduce (halve) file sizes.
As an audio professional, I thought this was a simple job. Downmix, encode the mono output, done. It turns out nothing happens to the file sizes. The aac, ogg, m4a and mp3 mono output files from audioSprite are identical in size to the stereo files.
First time I ran audioSprite with stereo source files and the switch -c 1
. So perhaps ffmpeg considers the source. Ran the same thing with a mono source file. Again, identical file size.
Anybody knows what's going on or what I would need to do?