id	summary	reporter	owner	description	type	status	priority	component	version	resolution	keywords	cc	blockedby	blocking	reproduced	analyzed
1792	libswresample mono to stereo conversion is lowering the amplitude	albertzeyer	michael	"I am resampling sound data with libswresample. I have one sample case where I resample

44100Hz, sint16, mono

to

44100Hz, sint16, stereo.

I.e. this is just a mono to stereo conversion.

I was expecting that

{{{leftSample = rightSample = monoSample;}}}

However, I was more getting something mostly like:

{{{leftSample = rightSample = monoSample / 1.41;}}}
(maybe 1.41 ~= sqrt(2) ?)

Is this a bug? Or expected? I don't have profesional audio background but I heard that a normal mono to stereo conversion is as what I would expect. I also have seen many different implementations where it is done like this, e.g. [https://github.com/avuserow/ffmpeg-replaygain/blob/master/gain_analysis.c the main ReplayGain implementation]."	defect	closed	normal	swresample	git-master	wontfix	regression				1	0