I think I understand about the sync thing. It’s synced to GOUT, but not to, say, the 2004 DVD because of additional scenes like the Jabba scene, which would throw off the whole thing. Sound effects and takes of lines are different according to the track, but it would still line up with when they happen in the movie. Is that right?
No, it’s even more specific. Let’s say the GOUT has 170,000 frames (made up number alert). Then let’s say Silver screen has 169,880 frames. It’s the same movie, same version, same cut, same scenes, but one simply runs a bit longer than the other because of extra frames at reel changes. And the audio from one won’t work with video from the other. It only takes two frames for audio to be annoyingly out-of-sync, and they’d be off by a lot more than that. It would be like an 80’s Hong Kong dub, except where the sound effects don’t line up either.