Ok, here is what I found.nckhrs wrote:DVDdoug wrote: P.S
I didn't read carefully before and I'm confused about something
A stereo WAV file with one silent channel is the same size as if there is sound in both channels. In WAV file, silence takes-up just as much space as non-silence. (A regular 1-channel mono file is half the size.) So... Something else was changed... Maybe you increased the bit-depth?
Original file size is 3GB, and yes, you're right, the silence right track takes space.
I found it by converting it to Mono, and the file size dropped to 1.7 GB.
So, regarding why when I copy pasted left to right and it became twice bigger (6GB), I still don't know.