Audio not in sync with video

TeetimeNC wrote on 12/1/2008, 10:21 AM
I have an HD video that I have rendered several ways including:

WMV HD for PC
MPG2 SD for DVD
MP4 HD for Vimeo

The first two renders are correct. In the MP4 render using the MainConcept template the audio and video are slightly out of sync. It appears that the sync grows progressively worse from start to finish. The project file hasn't changed from the first render to the last - what can cause this sync problem?

Jerry

Comments

xberk wrote on 12/2/2008, 7:02 PM
I have seen this problem (lack of sync) with MP4 files rendered using Mainconcept AVC/ACC but only when played back in Quicktime viewer. The Vegas timeline seems to play these files just fine. I use the MP4's for upload to Vimeo and likewise I have no sync problems when played at Vimeo.

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TeetimeNC wrote on 12/2/2008, 7:29 PM
xberk, thanks for your reply. I've now confirmed the same with my MP4. It played without sync problem after uploading to Vimeo, which was my target for this render.

Jerry