hairy_hen said:

The DVD and Bluray versions of ESB and RotJ are essentially the same as the 1997 mixes much of the time. They just have additional edits and changes piled on top of them whenever they felt like adding something to the later versions of the movies. There are some additional surround effects in some places that the 1997 versions didn't have, as well as being in a 6.1 format (or 5.1 EX) instead of the standard 5.1 from '97. But in all unedited sections, they seem to be virtually identical.

There isn't a lossless source for the straight-up '97 versions, but the Cinema DTS does sound rather good. It would be easiest to just use them as the primary source, with perhaps a splice from elsewhere to remove Luke's scream as he falls, since it is rather ghastly and nobody I know of would be in favor of keeping it.

Keep in mind, of course, that the Cinema DTS audio is at 44.1 khz at 24 frames per second, while video formats must be 48 khz and 23.976 frames per second. So this conversion must be made prior to any editing work. To avoid degrading the sound quality further, it should be performed at 24-bit resolution or higher, and dither should be used if it is to be cut back down to 16-bit again.

Thanks for all that info, I'll keep it in mind.

A question though. If I want to get rid of Luke's scream from the Empire Strikes Back cinema DTS audio, which audio track would fit in more seamlessly do you think, Belbucus's '93 PCM audio, the dolby digital 5.1 DVD audio track or the DTS-HD blu-ray audio track?