I thought all 5.1 mixes had this screw-up, and that the reason so many foreign tracks sounded correct was because they were all 2.0 being (correctly) processed by Pro-Logic.
Prologic only has one rear channel, so I don't think you could really tell which mix it came from.
I found something quite interesting while working on these. the 1997 mix and the two 2004 mixes don't quite synch up right. If you align them at the beginning, they're off by a couple of frames by the end. It's not noticible, even when you watch it, obviously, but I did find it curious.
Prologic only has one rear channel, so I don't think you could really tell which mix it came from.
I found something quite interesting while working on these. the 1997 mix and the two 2004 mixes don't quite synch up right. If you align them at the beginning, they're off by a couple of frames by the end. It's not noticible, even when you watch it, obviously, but I did find it curious.
When I was doing the DVD from LD a couple of years ago I had to manually sync the sound to the video. I found it was pretty hard to notice any sync problems within 2 or 3 frames. So I'd go even further out of sync, making a note of how bad it was and then splitting the differences.
The interesting thing I've discovered from doing the DVDs is that the audio on all DVDs seems to be ~80ms (two frames) in advance of the video, so don't try and sync it up externally and expect it to stay in sync once you've made the DVD. True DVD players play back in sync, but DVD player software on PCs seems to keep them out of sync.
DE