Help!  Audio goes out of sync after export.

OK, people. I need your help. I have a looming deadline of THIS FRIDAY to put this.

I have a multicam editing over a show that runs 1 hour 20 minutes. It renders perfectly in the timeline panel, all the video and audio perfectly synced. Looks and sounds exactly like what I need.

When I export the video in form file H.264, audio not get synchronized with the video of 13 frames! But that's not all... It doesn't go to the complete audio track. There are about 50 minutes in the middle of the video where the audio goes out of sync. The audio at the beginning and end of the video is aligned perfectly in sync. It is just the central part which is twisted.

What should I do?

This has never happened before, and I have worked extensively with multicam in first Pro CC before that. Never been a problem. I tried to uninstall and reinstall the first and also remove all media cache files, but still no dice.  I also tried to copy the clips in a new sequence in the same project, copying the clips into a new sequence in a NEW project, the nesting of the sequence... nothing works.

My configuration:

MacBook Pro retina (Rev A)

First Pro CC (latest version)

Panasonic GH3 images in 1080 p 24 p AVCHD timeline

3 cameras & 1 audio file to WAV in Multicam

Any help would be greatly appreciated!

OK, I figured out how to fix it:

  1. In first Pro CC, choose SEQUENCE > DELETE RENDER FILES.
  2. Try to export the movie again.

It worked! I exported the same sequence, and it took a lot of time to do a new rendering of the audio files, but when it was finished export audio and video are in sync. I don't know what caused it, but this fix, so I hope anyone else having this problem can save a lot of time in reading this.

See you soon!

Tags: Premiere

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