[quote=CDuncle;2052102]Are you talking about burned DVD’s or commercial one?
If this is on commercial once, I would try to clean the reading head, if that does not solve it, get new drive.
If it is happening on burned once, than it most likely is a bad (cheep) media, resulting in a bad burn.
Other possibility is also that your video card is too slow, or not enough memory.
What is your machine specs?[/quote]
Thanks Bro. yes, you are right, i am using burned dvds. But i faced similar problem, when i was trying to transfer my brother’s marriage movie from Mini DV (camcoder)to laptop. The movies runs but with bumps. My machine is AMD Turion-64, ML-37 with 1.5GB RAM.