Audio Sync

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Level 1

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Audio Sync

Hello -
I am having trouble with audio sync on some
clips imported from my digital video camcorder. In some clips, the voice
does not match up with the video, maybe by a few seconds. The footage is
fine on the camera. I have made sure (I think) that the capture settings
match the camera settings. I also tried to capture the video in relatively
short chunks (15 - 20 minutes) because I read something called ‘audio
drift’ may be an issue with longer clips. Also no dice. Any help would be greatly appreciated!

imac, Mac OS X (10.5.8)

Posted on Mar 10, 2010 10:14 AM

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Answer 1

Tom Wolsky

Level 10

150,986 points

Mar 10, 2010 11:06 AM in response to ee.post

Please give your full system specifications, what computer, what drives, what camera or deck, how everything's connected, what settings are on the media, what settings you're using in Final Cut, and finally what version of the software, of the OS, and of QuickTime you are using.

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Answer 2

ee.post Author

Level 1

0 points

Mar 10, 2010 12:02 PM in response to Tom Wolsky

Operating System = Mac OSX Version 10.5.8
Computer = iMac 8,1
Processor Speed = 2.8 GHz
Memory = 4 GB

Settings for Final Cut Express (version HD 3.5.1) = Under "Easy Setup" DV-NTSC 48kHZ

Camera = Canon Digital Video Camcorder ZR500, connected to iMac via Firewire
Audio setting for camera = 16 bit

Video footage is first transferred to iMac desktop, then a SATA drive, Western Digital Caviar, 1.5 tB. The video drive is connected to iMac via network cable

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Answer 3

Tom Wolsky

Level 10

150,986 points

Mar 10, 2010 12:33 PM in response to ee.post

Older Canon DV cameras do have a tendency to show sync drift in longer clips. Their timing crystal for the audio sample rate was just not accurate. This does not seem to affect more recent cameras.

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Answer 4

ee.post Author

Level 1

0 points

Mar 10, 2010 1:26 PM in response to Tom Wolsky

Thanks for the help. I appreciate it!

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