GH2 GH2 Sound sync issue in Premiere Pro

C

Chadac

Member
I'm editing a project that was shot on the AF100 and the GH2. The project was shot in 29.97fps on the AF100 and 23.98 ramped 80% on the GH2 to get it to shoot 29.97.

The problem is that they aren't syncing. The project sequence has been set to a 29.97 frame rate and they play back perfectly, but when I try to sync the audio from the AF to the
slate on the GH2 it doesn't match. It looks like it might be drifting.

Do I need to do something to the GH2 footage to have it match?
 
Assuming this is not a clock issue, and assuming the video syncs, you can divide the actual samples and frame rates to get a trim ratio, then set that sample rate in the DAW for a soundtrack of the correct length, changing the pitch but preserving the sound quality. However if it is a clock issue then you will need to resync at certain points.
 
I found that in Premiere Pro you can change the frame rate of the GH2 to an assumed frame rate to have it match.
Select the GH2 footage after it's imported - right click - select modify - interpret footage - assume this frame rate - type in 29.97

But now I've run into another issue. The sound on some of the clips from the AF (all of the AF footage has remained the same frame rate at import: 29.97) sound like they're jumping around.

I checked the original files on the hard drive and they play fine. I've even re-imported those clips and they still sound all jumbled. I'm not sure how to fix this new problem but it happens somewhere in the import process.
 
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