Hey,
I have had the problem again since then … this time PAL to PAL so it’s not to do with frame rate. The commonality both times was a change in format – so I reckon that’s the culprit as suggested earlier in the thread … still no idea how to correct it. To take it further, I actually think it may have something to do with interlaced footage? As both times I encountered this problem, it was from footage from DVDs (and another guy on this thread had problems with HD interlaced footage from an HDi camera …
I managed to fix it by literally duplicating frames at each cut – and then applying a compression marker to each frame around the cut, so that each of those frames around the cut could not be compressed (or interlaced) when outputting to a quicktime movie or whatever (remember when outputting to make sure you select “include all markers” or whatever that pulldown menu says. This was a very long way around the problem, and I’m sure there’s a WAY better solution … but no-one responded to my thread, so that was what I did.
Best of luck!
Lara