Problem syncing audio/video.

I don't know what is going on, but when I export a movie there is always a delay in the audio. I don't have any plug-ins loaded.The delay only appears when I play the movie in Quicktime. When I play it in VLC the audio and video are not in sync even I synced them in Logic. That makes me think, that Quicktime plays the synced and unsynced audio simultaneously.

Hey Ari,
I was having a similar problem perhaps and this is what I did to fix it.
timothymckean
Re: iMovie '11 audio sync issues since 9.01 patch 
Jan 24, 2012 12:11 AM (in response to Urban Shocker)
Hi All,
I've been dealing with this sync problem tonight as well and here's what I found that worked.
I noticed that the audio sync was fine when I viewed in Quicktime 7, but not in iMovie.  I also noticed there was a small indicator on the clips in iMovie notating that the source clips were in 17 fps, not 30 fps.   This is odd because I recorded the clips using the FaceTime HD camera right into iMovie and it never gave me the option for framerate on the recording.  Viewing the source video in Finder I also realized that the codec for the source was Photo Jpeg... yuck.  Who's choice was that.
Using MPEG Streamclip (free video converter) I converted the source video clip to a Quicktime .mov at 30 fps and using the Apple Intermediate Codec and all the audio sync issues were fixed.  Didn't have to optimize, detach, or - most importantly - re-edit anything.    Apple's editing systems love Apple Intermediate Codec (AIC), I don't know why they don't import in this codec by default.
** Download MPEG Streamclip from http://www.squared5.com/

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