[SoX-users] How to pass options to ffmpeg from SoX?

[Colin R. <bea...@gm...>]

I'm trying to combine and encode some files from wav to m4a. I installed
both ffmpeg and sox from source to make sure nothing was disabled. When I
do the conversion with ffmpeg


ffmpeg -i input.wav -acodec aac -strict experimental output.m4a


it works fine. When I use SoX


sox input.wav output.m4a


I get the error


[NULL @ 0x251b4e0] Codec is experimental but experimental codecs are not
enabled, see -strict -2

sox FAIL ffmpeg: ffmpeg could not open CODEC

sox FAIL formats: can't open output file `output.m4a':


I need to way to get SoX to tell ffmpeg that its ok to use the experimental
codecs.