I have a DVD (copy only) which would play in my DVD player for a few seconds and get stuck. If I press fastforward, it would go on until the end. If I play normal, it would get stuck again after a few seconds. I have copied the DVD into the hard disk which could then be played normally by PowerDVD. I have tried making another copy of the DVD from the hard disk files; and even reauthoring the title using IFOedit, the problem was still there. I think most likely there might be some problems with the VOB files. Any suggestions as to how I can patch the VOBs in order to make a playable copy for my DVD player.