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Activity Forums Apple Final Cut Pro Legacy Final Cut Pro suddenly distorts audio!??

  • Final Cut Pro suddenly distorts audio!??

    Posted by Simon Dybeck on January 7, 2011 at 11:31 am

    Hi
    I have filmed much with my 7d using a juicedlink mixer and imported it into final cut pro.
    Suddenly when I am editing the sound gets distorted and really high even though the sound waves look fine. It happens mostly in transitions on all my timelines. Here is a video clip of the phenomenon: https://enelesfilm.se/ovrigt/audiofail-desktop.m4v
    Look at the audio meters 🙁 Why is it like this and how do I fix it?!
    Thank you so much for any help!

    Thomas Casey replied 13 years, 4 months ago 5 Members · 21 Replies
  • 21 Replies
  • Andrew Rendell

    January 7, 2011 at 11:48 am

    As it happens where there’s a mix it may be a bad render, so if you get rid of the mix and remake it, that might fix it.

  • Simon Dybeck

    January 7, 2011 at 11:51 am

    what do you mean with the get rid of the mix?
    This problem is totally random. I can play over a section many times and get either no distortions or many different sounding distortions on different places. Totally random!

  • Andrew Rendell

    January 7, 2011 at 12:23 pm

    By mix I mean cross-fade. But if it’s random that changes my mind. Is the audio all at 48kHz?

    I notice that there’s been a few threads about this kind of thing, so it could be worthwhile searching through them…

  • Jerry Hofmann

    January 7, 2011 at 1:19 pm

    What format are the clips? ProRes with 48khz audio? or? What are your sequence settings?

    Jerry

    Apple Certified Trainer, Producer, Writer, Director Editor, Gun for Hire and other things. I ski. My Blog: https://blogs.creativecow.net/Jerry-Hofmann

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  • Jeremy Garchow

    January 7, 2011 at 1:30 pm

    It’s been a while, but a restart of the computer usually quells this for a while.

  • Simon Dybeck

    January 7, 2011 at 2:06 pm

    I have prores with 48khz audio but strangely some also are at 50050Hz.
    Cant check the project right now but the Sequence settings should be ProRes LT 1920×1080 with 25fps and 48khz audio.

    I have had this problem with this project for some months now so restarts have been made countless times 🙂

  • Simon Dybeck

    January 8, 2011 at 11:27 am

    Ok I will try that!
    Anyone have any ideas about the 50050Hz thing?

  • Jeremy Garchow

    January 8, 2011 at 2:15 pm

    Were those clips conformed on Cinema Tools?

  • Simon Dybeck

    January 11, 2011 at 12:32 pm

    Well I have som clips conformed from 24fps to 25fps in Cinema Tools. Im not sure which but it must be those who have 50050Hz. I tried trashing preferences and deleting renders from render manager but it still doesnt work 🙁

  • Jeremy Garchow

    January 11, 2011 at 1:58 pm

    Yes, when using Cinema Tools to conform, your audio is resampled and pitch is changed as the duration of your movie has changed.

    Jeremy

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