MPEG-2 out of sync when using Qmaster Cluster

Trying to figure out why MPEG-2 sync drifts when using a cluster. When I don't use a cluster sync is fine. My source is uncompressed or prores HQ QuickTime 23.98fps /w 8 channels of audio (6 channels being mapped to 5.1 AC3 and 2 stereo tracks). When I compare cluster and non-cluster MPEG-2 files in DVDSP the length in the inspector window is different, the clustered MPEG-2 QT is a half a second longer. The AC3 audio files are the same in length, cluster or not. I think when the cluster breaks the QuickTime into segments to renders are not being merged back properly.
Is this a known issue or is there a fix? Using a cluster has greatly decreased output time but is no good if sync is off.
I am currently on QuickTIme 7.4.5 OS X 10.5.3 Compressor 3.0.3

I just came across this exact issue as well. Discovered that audio was drifting out of sync on a 29.98 timeline in DVD Studio Pro on a 60 second spot (probably by just a few frames or so). Not too noticeable to most folks on a 60-second spot, but definitely noticeable on longer encodes.
For now, I'm not aware of any solution, but hopefully Apple is aware... I, too, enjoy the benefits of quicker encodes using my 8-core Mac Pro.

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Video + audio recorded in Quicktime X is out of sync when used in iMovie

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You should not HAVE TO but did you try extracting out the audio? This has been a issue for a long time. I am not sure why you never see this problem in Final Cut but it rears its ugly head in iMovie all the time. What do the call it now? Oh yes... detach. Select the clip then Clip -> Detach audio and line it back up.
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x

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Message was edited by: MrJeaz

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Should I convert just the clips which are out of sync in the DVD, or all of theclips in the FCP timeline?
If that is the issue, wouldn't I have the problem in the final prores mov as opposed to just when its played dvd to tv?
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Hi,
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MPEG-2 out of sync when using Qmaster Cluster

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