AVI to MPG completes but video stops.

[witchboard]

Please forgive me for probably such a simple question. I'm new to this and was hoping to find an answer.

I have an AVI file that is 726MB big and almost 2 hours in length. I used virtualdub to rip the sound from the avi into a separate wav file. I then attempted to use TMPGEnc to convert the AVI to MPG to write to DVD. I pretty much followed the guide on how to do this, but about half way through the preview window stayed on a single frame but it kept encoding. I figured something was up, but I decided to let it complete just to see what happens. It finished it's encoding (a total of 22 hours) and I checked it out. It starts fine, but then when I try to skip toward the center of the movie it freaks. I figure that the source AVI might be corrupted somehow, even though I've watched the AVI all the way through with no problems. Am I on the right track or could there be other possibilites? I would just play with it, but my system isn't the best and even though I am patient enough for it to convert it, I would still prefer not to. Sorry for the lengthy post. Any help would be appreciated. Thanks.

[ZippyP.]

Did you use Virtauldub to check your AVI for bad frames? They must be removed before extracting the sound and converting.

[witchboard]

No, I didn't. Thanks for the tip. I'm sure that's covered under a guide somewhere. I'll look for it and see if that fixes my problem. Thanks again for the reply.