mpeg2 rendering: sound not synchronized

FuTz wrote on 3/29/2003, 12:05 PM

I just rendered a project in mpeg 2 but the final sound is not synch with the image. How come? Did I forget something?

Mpeg2
custom settings:
240x160 framing, progressive (intended for a web site)
128kbps/stereo/32000 sound

Comments

FuTz wrote on 3/29/2003, 2:01 PM

Now, I tried rendering again but with audio set to 112kbps/mono/32000... even worse; like 2 seconds of delay now! :(!

CaliforniaIrish wrote on 3/29/2003, 7:40 PM

I've had a similar problem - There was an earlier post on March 23 -
http://www.sonicfoundry.com/forums/ShowMessage.asp?MessageID=167897&Replies=11&Page=19

I made several attempts to correct my problem inside Vegas 4, but could not get it to work. I found a KB articles suggesting changing the audio sample rate, but that didn't work for me.

I was finally able to solve my problem by rendering the orginial MPEG2 file to a DV AVI file using ShowBiz (came with my DVD burner), importing the AVI file into Vegas 4, editing and rendering back into MPEG2. Not a very convenient method, but it works. Encoding to MPEG2 inside ShowBiz also did not have the sync problem. It looks like ShowBiz uses the GoMotion MPEG2 codec.

For my situation, the source media looked it it may have dropped a few frames of video, but the AV was in sync during original playback and in the preview. It was only during rendering that the AV got out of sync.

Hope you get it figured out.

Cal Irish