I converted AVI to MPEG2 using TMPGENC. When playing mpeg file on computer, audio and video sync perfectly all the way to the end but when I burned it on DVDR using ULead DVD Factory 2, audio out of sync. The audio and video seem to sync find at beginning but eventually it seem to stretch further and further in the movie. I didn't have this problem before until my computer crashed and after I reinstall all the software, I start to experiencing this problem. Can someone advice me what am I missing what what do I need to do? Thank in advance!