video losing sync with audio during playback

Question

video losing sync with audio during playback

I am having a unique issue with FCP 6.0.6.

We are using this version to log and capture a switched video feed with audio

through a Black Magic DeckLink HD Extreme 3 PCI card. Capture works fine.

But during playback the next day, the video seems to drop a frame, or lose sync

(you can see it visually) then continues playing. The result is the video is now

out of sync with the audio.

We do a weekly 3 camera shoot which is webcast, and then later uploaded to youtube.

We have been running this setup for a number of years without issue, but this has started

becoming an issue the last 3 weeks in a row with no change to our setup.

The webcast does not experience this, which makes me think there is a sync issue

between my switcher and my FCP machine.

Any thoughts or ideas?

Mac Pro

3GHz Quad Core Intel

16 GB Ram

OS 10.6.8

Final Cut Pro 6, Mac OS X (10.6.8)

Posted on Jan 8, 2014 11:06 AM

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Answer 1

Studio X

Level 7

27,229 points

Jan 13, 2014 8:06 AM in response to shadowplay217

Are you ABSOLUTELY sure there was NO change? (All sorts of problems can occur if you haven't turned off automatic updates.)

In any case, you might want to run Preference Manager from Digital Rebellion (free) to delete the FCP prefs. Sometimes they get corrupted and can cause some funky behaviors.

Otherwise, sounds like a question for Blackmagic technical support.

x

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