Originally posted by: MeBeJediWould I be correct to assume that if the audio wasn't upmixed to 5.1 for the AC3 track that home theaters would decode the DD track as 2.0 (left and right only), whereas a stereo PCM track would be passed to the ProLogic decoder and be played as 4.0 (3/1.0)?
That is correct. The reasons I created this 5.1 track were 1) to see if I could do it

, and 2) my receiver doesn't have Pro-Logic II, so I figured I'd recreate the ProLogic decoding in software, and then save it as an AC3, which my receiver
could decode (plus it makes the file smaller as well.) I, and many others, were pleased with the result.