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  • Random and Extreme Audio Peaks

    Posted by Jessica Marie on May 26, 2010 at 1:49 pm

    I’m working with FCP 7 and PAL footage.

    There are times when, watching the footage on my timeline, the audio will peak to an extreme. The weird thing is that its completely random. It won’t happen in the same place twice and once I pause the footage and press play it goes away. It has been pretty jumpy now. It’s happened 3 times in the past 30 minutes while wearing headphones. I’m hoping someone can help me figure this out before I go deaf.

    Thanks!

    Kylee Pena replied 15 years, 9 months ago 6 Members · 10 Replies
  • 10 Replies
  • John Pale

    May 26, 2010 at 2:36 pm

    You have told us nothing about your configuration. Anything anyone could tell you would be a blind guess.

    Here is blind guess number 1.
    Uninstall and reinstall your capture card driver.

  • Jessica Marie

    May 26, 2010 at 3:03 pm

    sorry. I’m new at this, so i’m not sure what you mean by configuration, but here’s what I think you mean.

    Using a MacBook Pro 2.8 GHz Intel Core 2 Duo Processor, 4GB 1067 MHz DDR3 Memory

    My final cut sequence timeline is set to DV PAL 48 at 25fps.

    I hope that’s what you meant.

  • David Roth weiss

    May 26, 2010 at 3:21 pm

    Good guess John, I would have guessed the same. In addition, I would guess that trashing preferences might also be a possible fix.

    David Roth Weiss
    Director/Editor/Colorist
    David Weiss Productions, Inc.
    Los Angeles

    POST-PRODUCTION WITHOUT THE USUAL INSANITY ™

    EPK Colorist – UP IN THE AIR – nominated for six academy awards

    A forum host of Creative COW’s Apple Final Cut Pro, Business & Marketing, Indie Film & Documentary, and Film History & Appreciations forums.

  • Kylee Pena

    May 26, 2010 at 8:41 pm

    What’s the sample rate of your audio?

  • Jessica Marie

    May 26, 2010 at 10:56 pm

    that might be it, actually.

    The clips themselves are 32kHz but the sequence is set to 48kHz.

    I suppose I have to convert everything to 48kHz now?

  • Kylee Pena

    May 26, 2010 at 11:11 pm

    Yep, that’s it. And yep, just drop your files into compressor and convert them to aiff 48hz. It takes seconds. Then you can take those bad files offline and relink to the correct ones.

    I had this happen recently with one random clip I got that was a different sample rate and man, that sound it makes is loud.

  • Michael Gissing

    May 26, 2010 at 11:32 pm

    FCP is hopeless at converting sample rates on the fly. The spikes you are hearing is FCP doing that job badly. In the end 48khz is the standard rate for digital audio for broadcast, DVD etc.

  • Jessica Marie

    May 27, 2010 at 12:09 am

    Thank you everyone!

  • James Tupper

    November 12, 2010 at 6:42 am

    I’m having the same problem. I’ve tried converting all of my audio to 48khz, but every now and then (when I least expect it), SCREEEEEEECHHHH!!!

    It’s jarring and insanely loud and it might stop my heart one day. Anybody else have any answers?

  • Kylee Pena

    November 12, 2010 at 3:32 pm

    What format are the audio files and what are your sequence settings?

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