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FCP: Audio drifts when combining HD and SD

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Kerwin Kuniyoshi
FCP: Audio drifts when combining HD and SD
on Mar 19, 2012 at 10:31:55 pm

Hi,

I recently shot an event in a large hall-like space with two Canon 5D MkIIs and a Panasonic DVX-100. Audio was taken from the soundboard into a Tascam DR-07 (a .wav file). The 5Ds shot at 24 while the DVX was at 30. I used PluralEyes to sync all the footage up but now I'm having sync issues. The audio from the Tascam isn't syncing with the other cameras AND the footage from the DVX goes out of sync after a while.

How do I fix this sync issue? And how can I avoid this situation in the future (without buying another camera)?


Kerwin


System:
iMac running Lion 10.7.3
FCP 7.0.3


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Shane Ross
Re: FCP: Audio drifts when combining HD and SD
on Mar 19, 2012 at 11:00:11 pm

Let me guess. You didn't convert the H.264 files the Canon produces to ProRes, did you? You used the files natively in FCP...just dragged them into the app and started working...?

Shane
Little Frog Post
Read my blog, Little Frog in High Def


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Dave LaRonde
Re: FCP: Audio drifts when combining HD and SD
on Mar 19, 2012 at 11:02:27 pm

This issue comes up about twice a week in this forum, I'd say. I recommend a search using the term sync. You will be rewarded with a wealth of information.

Dave LaRonde
Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA


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Steve Eisen
Re: FCP: Audio drifts when combining HD and SD
on Mar 20, 2012 at 1:03:00 am

[Kerwin Kuniyoshi] "The 5Ds shot at 24 while the DVX was at 30."
There is your answer to why your audio is out of sync.

[Kerwin Kuniyoshi] "How do I fix this sync issue?
A lot of slipping and sliding.

And how can I avoid this situation in the future (without buying another camera)?"

Shoot at the same frame rate.

Steve Eisen
Eisen Video Productions
Vice President
Chicago Final Cut Pro Users Group


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