Are you trying to edit the video or just play it, Metwin1?
I don't know anything about editing, but if you're just trying to play it, then, in the past, when I've experienced these kinds of synchronisation problems, it's been because the dl doesn't have the right codec.
Finding out which codec you need is a bit trial and error. But here are a couple of sites which worked for me:
Defiler Pak K-Lite Mega Codec Pak G Spot is a program that will scan your video and tell you what the missing codec is, cutting down your search time. I've found it to be a bit hit and miss - sometimes it comes up blank - but it's been useful enough in identifying missing codecs that it's worth a try.
Hope this helps. Other than this, all you can do is just keep dl and trying out various codecs (just Google codecs and you'll get plenty of hits) till you hit on the right one.
LabRat
