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iMovie '11 audio sync issues since 9.01 patch

I have an iMac 27 and have been importing old MiniDV tapes since Christmas. The camcorder is a Canon HV20 connected via FireWire. I had no issues until the iMovie 9.01 patch AND Mac OS X 10.6.6 patch.

I have imported 15-20 hours with the patch applied and it appears that the longer the event/segment, the worse the sync issues becomes late in the import. On the camcorder LCD everything looks fine.

Is Apple working on a patch to the patch? Will the patch fix the audio issues or will I need to reimport all of the sync issue MiniDV imports?

iMac 11,3, Mac OS X (10.6.6)

Posted on Jan 9, 2011 2:39 PM

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77 replies

Jan 13, 2011 9:12 AM in response to MacUser184

My experience is a little different in that I record from a firewire/800 attached camera (Sony TRV350), importing live video. The audio sync problem is obvious during playback in the iMovie preview window. Looks like a poorly dubbed foreign film. I use no audio editing features (noise reduction, normalization) and I still see this problem.

I do have a workaround: at the beginning of import, create the iMovie event on an *external hard drive*. I use a firewire/800 attached LaCie 320GB Rugged drive. I am not seeing any sync issues (yet) in the recorded live video. If I have time today, I will try importing some video previously recorded to Hi8 tape to see if that works as well.

Jan 13, 2011 3:47 PM in response to inglett

I checked my workaround to see whether it would indeed work when importing video from tape using iMove '11. It did not! Even on the external hard drive, the audio and video were not in sync. So, it has me wondering whether my workaround really is a work, as previously described when recording video live from the camera. Perhaps I just got lucky when I first tried it. I will repeat my experiment and report back.

Jan 13, 2011 4:49 PM in response to inglett

Try this: just play your raw file (.dv) using Quicktime. I found that audio and video were perfectly synchronized if I used Quicktime to view the clip.

Even though iMovie 11 imported them.

But if I played the same clip in iMovie, the audio and video were not in sync.

I tried the suggested workaround (external disk) -- it didn't make any difference. In any case, I believe the raw data doesn't have a sync problem, just the way iMovie plays it back.

Jan 13, 2011 7:14 PM in response to inglett

Following up to my previous post, importing from tape (even to an external hard drive) always results in an iMove event with audio out of sync. However, importing live video via my firewire attached camera works OK, but only if saved directly to my external hard drive. Oddly, audio/video for this live recording is sometimes not in sync (after playing another video) but if I exit iMovie, and then restart, playback is once again fine. Weird.

Sajaya Kumar is correct that the raw file (.dv) appears all right. All of my video events play back perfectly using Quicktime, whether they have audio/video sync problems in iMovie or not. So, at least I'm fairly confident I could recover a "corrupt" project when this iLife problem has been fixed. Has anyone in this discussion officially reported this problem to Apple?

Jan 15, 2011 9:31 AM in response to MacUser184

To add to the voices here all of my video footage has the audio out of sync with the video. I shoot and edit weddings for a living for 7 years now and I have been using iMovie since its inception and added every upgrade since and I have never had a problem. Some of you may think that it is your video camera but that is doubtful. As an experiment I have an iMovie wedding on an external hard drive. When I play the movie's raw footage on one of my computers (I have a few imacs) the new iMovie 11 audio is out of sync. When I attach the external drive with the iMovie footage onto a different computer that has iMovie 10 there are no sync problems between the footage and audio. I use Canon GL2 cameras ... again, I believe that this experiment demonstrates that it is not your video camera and that iMovie 11 is the problem I hope that Apple addresses this soon!!

Jan 15, 2011 11:14 AM in response to inglett

Since I rely on iMovie to produce a weekly church video, I pulled out my old and little used MacBook Pro 17 (original Intel 2006 model), upgraded it to OS X 10.6.6 and then installed iLife '11 from the install DVD, without updating it. It works fine...no sync issues. It's so good to have a working video editor that I'm afraid to update from version 9.0 (1073) to version 9.0.1 (1095), just to verify that that the patch breaks it.

Jan 15, 2011 1:44 PM in response to MacUser184

I have a question for those here having audio sync problems like me. I have two versions of Quicktime on my machine .. Quicktime Player 7 and of course the latest version of Quicktime. I know that at the heart of all iMovie functions for video is Quicktime. In iMovie 6 for example, at time your audio would be muted for no reason at all. The fix was to go into Quicktime settings to select the proper audio codec that iMovie 6 operated from. Having noticed that I have both on my machine, I was wondering perhaps if there is a conflict in having the old Quicktime version on my machine. I use the older Quciktime to do a little bit of audio editing for the vows mp3 audio that I have.

Just wondering.

iMovie '11 audio sync issues since 9.01 patch

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