When I encode video clips > 3 minutes, I get wierd blocks. They include random white boxes or white stringy blocky lines. Sometimes, when encoding a widescreen movie, the bottom part, the black border would turn white for a split second. One time, the bottom half the screen turned white. It's also random occurance. When I reencode the same clip, the white chunks reappear in another portion of the finished video. It's quite frustrating.

Anyone else have this problem?

All these big white chunks occur for a split second. It's annoying because these few ruined frames ruins a otherwise beautiful encoding.

It's definitely in the mpeg file (not a dvd player problem) because they show up when playing it on the computer.

Procedure:
I feed clean AVIs (no white chunks, no errors) or a dvd2avi frameserved file into VirtualDub and frameserve it to Tmpgenc 2.53.

Potential Suspects for the Problem:
Unstable new VIA drivers (although I haven't noticed any real instability)
Electrical surges causing interference to Tmpgenc's encoding process.
Capture card conflicts
Corrupt system registry (Windows been flaky recently)
CPU overheating

I plan to reformat my harddrives and reinstall. But, it would be nice to know if there is a definite solution to eliminate big white chunks.