"Blockiness" in avi to mpeg creation

[modem]

After I converted a movie from xvid to DVD compliant MPEG2 everything worked great. I accomplished this from frameserving from Virtualdub to TMPGENc. Although after everything was finished I noticed that in the movie for fractions of seconds there were colored "blocks" that appeared and dissappeared very quickly. I'm not sure what is causing this or if there is a setting inside of TMPGENc that controls this, but if there is a setting please let me know.

I have scanned the movie prior for bad frames to make sure there are none and taken other precautions. If anyone has any suggestions or comments feel free to let me know.

Brad

[Treebeard]

Are you talking about those little blocks that flash for a few frames and have all the colors of the rainbow? If that is the type of colored blocks then I would suggest a different brand of media. That is what usually causes it for me.

[Coop]

Modem - I haven't attempted to rip from a DVD source yet, so I'm not as directly familiar, but did you specify the type of bit rate conversion (CBR, VBR, or CQ) In TMPGenc when you converted to MPEG2?

[modem]

Are you talking about those little blocks that flash for a few frames and have all the colors of the rainbow? If that is the type of colored blocks then I would suggest a different brand of media. That is what usually causes it for me.

Well I haven't burned it to DVD disc yet. I was viewing the raw mpeg file on my hard drive after it had converted from divx to DVD/MPEG. Thats when those rainbow colors appeard for a frame or two. When I burned to a DVD-R those blocks appeared in exactly the same spot as they did on the hard drive which tells me the DVD-R is fine, but something in the converting process is messed up.

[kustomkla80]

i think this is just one of the flaws of highly compressed avi files. lots of my movies converted from avi files do this too. It happens sometimes when I'm watching the avi file as well

[dimsnavi]

sounds like a corrupt file to me...

[modem]

As far as i know it's not corrupted. I've checked for quality, bad frames and everything seems to be fine. If it's just something small I'll live. there are only about 5 occurances of this per movie so it's not going to bother me alot. I just wanted to know the root cause.