audio goes out of sync after some crazy green/red/purple/blue screen

[mub6]

hi.
im encoding a movie using tmpgenc doing an elementary video stream only to create an m2v file and adding the ac3 audio later when authoring, iv checked the source avi file and this problem doesnt occur then, what i'v done is that iv demuxed the source mp3 sound and converted it to ac3. after authoring the dvd (and adding the ac3 sound), at about 2hrs and 14 mins, a screen with blue and red and green and yellow and purple and other various colours appears, after which the audio goes badly out of sync
please can somebody tell me how to fix this,
thanx in advance
MubZZ

[Baldrick]

Sounds like a dvd media problem.

How do you test the dvd? on your standalone dvd player? on your computer using a software dvd player?

[mub6]

no im not burning the vob files im just playing it on my computer and i get this problem although i have burnt a set of them onto disk and i still get the same problem when played on my computer using nero showtime iv not yet tried it on my standalone

[mub6]

yep, iv now tried it on my standalone and still the sync issues