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Out of Sync in FCP, but not DVD Studio Pro
We shot on a Canon 55D at 50fps that I converted to 25fps and gave to my sound designer to sync ADR dialogue and do sound design on.
I received all the sound back in a single .wav file that I imported into FCP7 and lined up with the 25fps export that I gave to the sound designer. The sound is perfectly in sync for 4min and then slowly goes out of sync for a minute and then back into sync for the last 5 minutes of the film.
The same clip and sound file is perfectly in sync in DVD Studio Pro’s timeline, so the problem does not lie with the sound department.
Does anyone know how to fix this problem or why it occurs? I would appreciate any leads on why this could occur.
Thank you in advance.
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4 Replies
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What is the sample rate of the timeline and what Easy Setup are you using?
how are you monitoring audio and video from FCP? -
My Easy Setup settings are:
Apple ProRes 422 1280X720p HDTV
Audio Settings: 48kHz, 16bitWhat do you mean with Sample Rate of the Timeline? I am not to familiar with audio settings.
“how are you monitoring audio and video from FCP?” Please elaborate on what you mean with this question please…
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Sorry, I meant the sample rate of the source file you got from your sound guy. This will be viewable in the Browser.
Sometimes, sound guys used to doing music will use 44.1k and FCP defaults to 48, as that is the standard for video. If you put a 44.1k sound file in your timeline, FCP will try to sample rate convert on the fly, but often will have difficulty..which can cause things to fall out of sync or cause audible pops and clicks.
There are a couple of ways to deal with it if the sample rate is 44.1. One is to render the audio (item level render), the other (preferred) is to convert to 48k using QuickTime Pro, iTunes, or Compressor.
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Ah, I checked the sound file and it is 48kHZ… My main concern is that it went so horribly out of sync in FCP but was perfectly in sync in DVD Studio Pro…
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