Remnant audio bits that will not go away

Question

Remnant audio bits that will not go away

I just finished editing a video in which I detached and removed all of the original in-camera audio (clip by clip) and added an AAC music track to play over the whole video. I've produced several videos like this before without any trouble. But this time for some reason "phantom" audio from the original clips are popping up in the output. When I play the movie in the iMovie '09 viewer everything is fine. But when I export it these bits of video are still there. I went back through and verified that all of the clips are muted. Yet I cannot find where this remnant audio is coming from. Stranger still is that the audio that is playing is not matched up with the clips it came from. Am I doing something wrong? Is this a glitch or a known issue since the last update?

iMac C2D 2.4Ghz 3GB RAM, Mac OS X (10.4.10)

Posted on Apr 2, 2009 11:55 AM

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Answer 1

Apr 2, 2009 1:38 PM in response to Christopher Boffoli

When you say you muted the original video, does that mean you set the volume slide to zero on all the original clips? If not, how did you mute?

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Answer 2

Apr 2, 2009 1:53 PM in response to Christopher Boffoli

Hi Christopher,

Did you use custom slow/fast motion in this video as opposed to your other ones? There is a bug in iMovie '09 that can cause loss of audio sync and the "phantom" audio bits you describe when using custom slow/fast motion. This has been experienced by many users. See for example this thread:

http://discussions.apple.com/thread.jspa?messageID=9152271

There are some workarounds, being the easiest one to only use what the slow motion slider snaps to instead of entering custom speed percentages.

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Answer 3

Apr 2, 2009 3:37 PM in response to AppleMan1958

I detached and deleted the audio track from each of the clips I used before I laid down my music. Again, everything played fine in the iMovie app window. Post-export was a different issue.

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Answer 4

Apr 2, 2009 3:39 PM in response to Valenciano

Thanks for pointing out this link. What I ended up doing was to import the Quicktime file that I exported, deleted the bad audio track, and then laid in a fresh music track and re-exported. Seemed to be a good work-around.

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Answer 5

Apr 2, 2009 3:40 PM in response to Christopher Boffoli

An export bug exists in the current version of the app. The solution was a work-around until a fix is pushed out.

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