Audio fine on iDVD but goes out of synch when burned to DVD. Why?!

[NJRonbo]

Having a persistent problem that is causing me to buy a lot
of expensive DVD+R DL discs.

I imported my movie in iMovie '06. I prefer to use that program
over '08. I added music throughout, and since my project was large,
by the time I imported it to iDVD I had to burn it to a DL DVD rather
than a regular one.

Before burning, I check that the music is qued properly and that
everything is in synch. However, after the DVD is burned, the voice
and audio track is about 1 second out of synch. The music track is fine.
It's a very noticeable problem.

I'm looking at the original file I have on my hard drive on iDVD and it
plays completely in synch. Why is it going out of synch when burned
and how do I prevent the burning process from manipulating the track?

I am guessing the problem could be the double layered DVD and the
fact that it has to switch layers which causes the audio track to go out of synch.

Any thoughts? If anyone has a fix, please be specific. Thanks

 

[jemeinc]

that tends to happen on larger projects when the camera has the audio set at 12 bit instead of 16 bit.. first thing you need to do, for future projects, is set your cameras audio to 16 bit.. Most come set at 12 bit by default.. For this project try extracting audio... It's in the advanced drop down menu (I believe).. I'm not able to get in iMovie 6 right now as I'm running out the door, so I'm sorry I can't be more specific, but I'm sure someone will point you there if you can't find it... I had the same problem and this solved it for me...

 

[NJRonbo]

If someone can be more specific what to do here I'd appreciate.

In fact, if I can do something with my existing project in iMovie '06
(using audio extraction) without having to start all over again I'd be
VERY happy.

Thanks for the help thus far.