Hi
I have captured MPEG2 file. Audio and Video in MPEG2 is very good. I render it as M2V and AC3 with Sony vegas 4.0. I am using Tempeng and DVD lab for authoring. After authoring when I play VOB in my computer, Audio and Video was out of synchronization. Usually I play VOB in my computer before I burn DVD. I use different timeline for Video - SMPTE non-drop(29.97 fps) and SMPTE drop(29.97 fps). But in both case audio and video was out ot synchronization. My MPEG2 file is 1:47:19 minutes long. After rendering as AC3, AC3 file shows 1:47:25 long. M2V file shows 1:47:19 minutes long.
As a first option I use AC3 delay for Audio/Video synchronization but After 15-20 minutes of movie it again out of synchronization.

My computer configuration is:
P4 - 2.6GHz Hyper Threading
512 MB RAM
120 GB SATA HD

My computer is fast enough. It take 20 minutes to render AC3 file and Approx 2 to 3 hours(depend of file size) to render M2V file.

Can somebody help me what is wrong? How can I synchronize Audio and Video?

Thanks