Obviously i have no idea which file you've seen! I was going to post the file name and size, but due to storage restrictions i've already deleted the mpeg that i converted it from.
The mpeg was given to me by a fellow arcade collector at a recent meet i held. Chances are it
could have come from an original disc, but i wouldn't like to say

I certainly know people with original DLII machines, so it could be.
How quickly would the syncing problems occur? I haven't sat down and played it too much yet, and i'm crap anyway, so haven't got too far!
If they show up straight away then this IS a good version. If they show up later then i'll probably never know, as i say i'm just not good enough to get that far into the game (unless of course there's randomness involved like on DL)
Regardless though, i was primarily just responding with how to convert it. That should be the same regardless of whether the results are any good or not...