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Audio Sync Issues

Posted: Tue Jan 15, 2008 6:07 pm
by b15fliptop
I have an animation that I created lip sync for in Magpie Pro. When I view the animation in ASP it is perfect, but whenever I try to export it the animation lags behind the audio by about a second. I can't for the life of me figure out what the problem is. I have done several similar projects that came out just fine. Nothing in my workflow has changed. This is extremely frustrating.

Any ideas?

Posted: Wed Jan 16, 2008 12:02 am
by heyvern
By any chance is the out put to SWF? Sound can drift with big SWF files. The player doesn't preload anything with a default output from AS so the sound can lag.

I can't think of any other reason. If the sync is correct in AS it should be okay in the final export.

-vern

possible cause

Posted: Wed Jan 16, 2008 6:17 am
by Laminar
This happens to me quite a bit...but I think it is just my machines inability to keep up the large uncompressed AVI file. Once I put it into the video editing software and output from there everything is in sync again.

Just a thought. Oh I once got caught by importing the sound file into the video software seperately from the animation from AS and didn't have the frame rate the same in both applications....this of course caused the lip sync to be way off as well.

Paul

Posted: Wed Jan 16, 2008 7:18 am
by Mikdog
Yep.

My guess is that maybe you've set the output FPS to something different. Maybe you worked in 25 FPS, and you're exporting at 24 FPS. The audio would get increasingly laggy a time went on, though.

Make sure about that.

Plan B is to import your movie and audio into your editing package and line the audio up with the video.