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Forums Apple Final Cut Pro Legacy AVCHD audio drifting in FCP7

  • AVCHD audio drifting in FCP7

  • Maria-Luisa Meredith

    July 20, 2018 at 1:55 pm


    I recorded an event using a Panasonic AG-AC160EJ, creating AVCHD (.MTS) files. I recorded camera audio but was also supplied with high quality .wavs from the Sound Desk.

    I used EditReady to create .movs for importing into FCP7, but when I sync the start of camera audio and sound desk audio in the timeline, it eventually drifts out of sync. Any suggestions about what’s going wrong here?

    Thanks in advance.


    Macbook Pro / OSX 10.6.8 / 2.4GHz Intel Core i5 / 4GB 1067 MHz DDR3

    FCP Studio 7.0.3

  • Shane Ross

    July 20, 2018 at 7:49 pm

    What is the kHz of the audio you are syncing with? 44.1? or 48? 48kHz is the better choice, 44.1 will drift.

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  • Maria-Luisa Meredith

    July 21, 2018 at 10:52 am

    Hi Shane

    Thanks for your response. I’ve double checked and both the camera audio and sound desk audio are 48khz.

    Macbook Pro / OSX 10.6.8 / 2.4GHz Intel Core i5 / 4GB 1067 MHz DDR3

    FCP Studio 7.0.3

  • Nick Meyers

    July 22, 2018 at 2:51 am

    there’s an on-going issue with audio files and sync in FCP.

    you must have your sequence pre-set set to the frame rate of your current project when you import your audio files.
    if your sequence pre-set is s et to something other than your current project, audiophile that you import can adopt the wrong frame rate and drift in sync.

    so check you sequence pre-set. make sure the frame rate matches your current work.
    (and you can’t just select the pre-set you want, you have to click in the left hand column so there is a tick or check symbol.)
    then re-import your radio and re-sync it.


  • Maria-Luisa Meredith

    July 22, 2018 at 10:24 am

    Hi Nick

    Thanks very much for this, I haven’t used FCP in a while so your suggestion really helped me out!!


    Macbook Pro / OSX 10.12.6 / 2.7GHz Intel Core i5 / 8GB 1867 MHz DDR3

    FCP Studio 7.0.3

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