DVD Audio Out of Sync

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Level 1

32 points

DVD Audio Out of Sync

I am exporting a file from FCP X to Compressor 4.1.2 in order to burn a DVD. The FCP X export is 3840 X 2160, 24 fps progressive, with audio at 48KHz. When I select the "Create DVD" preset in Compressor the resulting DVD's audio shifts over time and gets progressively out of sync as the film progresses. After looking at various posts online it seems that this is usually a frame rate problem, but when I select the "Create DVD" preset in Compressor and try to select 24 fps in the video inspector it switches to 23.976 and the resulting DVD has out of sync audio. Setting the frame rate to "Automatic" also results in a DVD with out of sync audio. Is there any setting I can make such that the audio will sync correctly?

Posted on Jul 7, 2014 7:55 AM

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Answer 1

Russ H

Level 7

22,432 points

Jul 7, 2014 9:40 AM in response to spurn555

Was the video shot @ 24 fps? Sis FCP X determine the project properties from the first clip, or did you specify a custom project frame rate?

What is the native format of the clips? Are you using Send to Compressor?

Russ

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Answer 2

spurn555 Author

Level 1

32 points

Jul 7, 2014 9:43 AM in response to Russ H

The video was shot at 24, and FCP determined the project properties from the first clip (all clips are at the same resolution and frame rate). The native format of the clips is the Apple ProRes 422 HQ and I used Send to Compressor.

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Answer 3

Russ H

Level 7

22,432 points

Jul 7, 2014 10:03 AM in response to spurn555

24 frame rate should work if the audio is 48 kHz.

Try a different workflow, Share directly to DVD from Compressor FCP X or export a Pro Res master file and bring the exported file into Compressor as the source file.

In FCP X, use the Range tool to mark a representative section to test for drift and choose hard drive for output device to save the media and time.

Russ

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