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Audio is syn in fcp timeline, but out of syn in exported Quicktime movie

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Mahmoud Salimi
Audio is syn in fcp timeline, but out of syn in exported Quicktime movie
on Oct 2, 2012 at 3:14:35 am

I am exporting a three hours video. The exported quicktime video's audio goes out of sync in some parts in playback while it is completely sync in fcp timeline. I use my mac computer to edit and playback. I opened the exported quicktime movie in QT, VLC and MPEG Streamclip apps. The audio was out of syn in some parts in all of them. Any hints is appreciated.

Video Settings:
Frame size: 1280 x 720 HDTV 720p (16x9)
Pixel Aspect Ratio: Square
Field Dominance: None
Editing Timebase: 29.97
Compressor: H.264

Audio Settings:
Rate: 48 kHz
Depth: 16-bit
Config: Channel Grouped


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Rafael Amador
Re: Audio is syn in fcp timeline, but out of syn in exported Quicktime movie
on Oct 2, 2012 at 4:46:00 am

If you are editing H264 directly in FC, that's one of the things that may happens.
H264 is not supported by FC.
rafael

http://www.nagavideo.com


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Mahmoud Salimi
Re: Audio is syn in fcp timeline, but out of syn in exported Quicktime movie
on Oct 2, 2012 at 1:08:06 pm

what codec would be good instead of H.264?


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Dave LaRonde
Re: Audio is syn in fcp timeline, but out of syn in exported Quicktime movie
on Oct 2, 2012 at 2:01:35 pm

Final Cut Pro really, Really, REALLY likes ProRes 422. Unfortunately, this best done when the footage is either captures or transferred.

However, you can use the media manager to create an entirely new FCP project in ProRes 422. You'll need more storage to do it.

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


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Rafael Amador
Re: Audio is syn in fcp timeline, but out of syn in exported Quicktime movie
on Oct 2, 2012 at 3:14:00 pm

As David said.
Anyway, if you have all your edit already finished, try changing your sequence codec by Prores, and render all YUV in 8b YUV or high precision YUV.
If you are lucky the audio won't get off sync.
rafael

http://www.nagavideo.com


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Richard van Harderwijk
Re: Audio is syn in fcp timeline, but out of syn in exported Quicktime movie
on Oct 3, 2012 at 6:12:03 pm

Hi Mahmoud,

I've had the same problem. I got a project with different frame rates and codec's. I didn't know the solution back then, but I just nested the sequence in another (DV codec, it was to produce a DVD) and renderd. That did the trick.

I later learned it has to do not all audio files have the frame rate in it and then FCP picks it standard setting, And that can cause drifting. See link below for a explanation how to solve it.

Good luck

http://forums.creativecow.net/thread/8/1147400#1147445


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Mahmoud Salimi
Re: Audio is syn in fcp timeline, but out of syn in exported Quicktime movie
on Oct 26, 2012 at 2:16:18 am

Thank you very much. Problem solved.


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Mahmoud Salimi
Re: Audio is syn in fcp timeline, but out of syn in exported Quicktime movie
on Oct 26, 2012 at 2:15:39 am

Worked great. Thank you very much.


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Mahmoud Salimi
Re: Audio is syn in fcp timeline, but out of syn in exported Quicktime movie
on Oct 26, 2012 at 2:22:31 am

Thank you Dave. I have one more question regarding FCP, but this time FCP X. I have FCP 7 installed in my macbook pro. I want to install and edit a project with FCP X. I'd like to have FCP7 in my computer and use it whenever needed. I was wondering if both FCPs (7 and X) may conflict if they are installed in the same machine.

Any hint is appreciated.

Best,


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