Can someone please recommend a program I could use to join 4 .avi files without losing dual audio channels?
I have 4 different files, with dual audio on two of them (single audio on the other 2). Originally, they are about 1.5Gig in size, and I'd like to keep them that way after joining.
The free programs I've tried so far drop the 2nd audio channells and I end up with a 14Gig file at the end. Can someone help me?