Loud noise when iSight launches from iMovie

Hi everyone,
I just bought a MacBook Pro and when I launch iMovie and slide the little button (scissors to movie camera) to turn on the iSight my MBP makes a loud (EEEEEHHHHHH) sound. When it happens it sounds like my speakers are going to blow. It lasts for about a second or two. Is this a known problem?
The problem doesn't occur when I launch Photo Booth, only iSight.
I'm current on all updates.
Steve

Hello Steve,
Is this a known problem?
It is not a known problem with iSight. Here are a couple of things you should try.
First, try turning your speakers' volume off before sliding the button. Then turn you sound up gradually, and let us know if the problem still exists.
If you use an external microphone or speakers, you can also try disconnecting them to see wether they might be causing your problem.
Next, try every suggestion re: Built-in iSight in How to Troubleshoot iSight. Be sure to include the checks to determine whether the problem is "application-specific" or "user-specific".
If I am correct that you have already tested both iMovie and Photo Booth, you were wise to test with more than one application. However, Photo Booth does not record sound, so that may be why you are not getting the noise with Photo Booth. Try some other applications that can record sound.
In addition to iMovie, any of the other video or movie clip applications from this list can record both video AND SOUND with your iSight. So can the apps linked in the "iSight as a surveillance or Nanny cam section of that page.
If you have it, QuickTime Pro is an easy one to use with your iSight.
Some clip recording applications, like Gcam, are free.
Others, like WebcamTweaker, offer free demos that you could use to test if they give better results than iMovie.
These tests will let you determine whether your problem is in your iSight itself or is an iMovie problem, and they may help you fix the problem while you are doing the checks.
Please let us know what fixes your problem.
If your problem remains after the tests, please post back what you tried and include any new info that your testing provides.
Cheers,
Jim
Mac OS X (10.4.9) G5 DP 1.8 External iSight

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Loud noise when iSight launches from iMovie

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