Forum Replies Created

  • Gsteiner

    October 25, 2007 at 11:45 pm in reply to: Sync Issues with FCP and ProTools

    I did see the pulldown/pullup settings, but I believe you need to have certain external hardware to use it (if I’m interpreting the manual correctly).

    Either way, I shouldn’t have to perform a pullup or pulldown since everything was done as straight 24fps. This is evident since I can export from ProTools as a quicktime movie and everything syncs correctly. The only difference I can tell is that when it’s packaged as a quicktime movie it is “synced” with a 24fps video track.

    It seems as if final cut interprets all imported AIF files as 30 fps. I’m beginning to suspect that this is the problem (even though technically, audio files don’t have a frame rate, only a sample rate)… maybe a glitch in the program design?

  • Gsteiner

    October 25, 2007 at 3:10 am in reply to: Sync Issues with FCP and ProTools

    Both Final Cut and Pro Tools are set to straight 24 fps (no drop frame set in either case that I can find in the settings). No pulldown is being used either since I’ve kept the entire workflow at 24 fps and 48 kHz audio.

    I even experimented with a few pullups and pulldowns to confirm. If I reduce the duration of the AIF to 99.9% it getes much closer, but it still is not in sync.

    I’ve also tried doing some frame rate conversions going from 48kHz to 47.xxxx (can’t remember the exact ratio but you get the idea) and that didn’t work either. So far the only way to get it to sync exactly is to send the audio out of protools embedded in a 24fps quicktime movie.

    I’m at a loss here.

  • Gsteiner

    October 24, 2007 at 11:10 pm in reply to: Sync Issues with FCP and ProTools

    Ok folks… additional information for you all on this topic. I’ve done some extensive testing to try and track down the problem and here’s what I’ve found.

    If I “bounce” a QUICKTIME movie from ProTools (which is aparently an option I never noticed before) it Re-exports the imported reference movie with the audio included (these are obviously in sync).

    When I import the QUICKTIME movie into FCP, I can lay the audio track on the timeline and it is perfectly in sync. SO…. AIFF, WAV files created from ProTools = out of sync audio. QUICKTIME movie created from ProTools = Audio is in sync.

    A little further investigation revealed that the Quicktime movie is a 24 fps movie (as expected), however, the audio AIF and WAV files are being interpreted by FCP as 30 fps… even though I’m exporting them from a 24fps timeline in ProTools. There is aparently no way to manually change this in FCP as it ‘interprets’ the frame rate from the audio file.

    It appears that FCP always assumes that audio files are at 30fps. I suspect that herein lies the problem I’m having with the audio.

    Is there any way to let FCP know that the audio file I’m importing should be interpreted as 24fps and NOT 30fps? Perhaps this will solve the problem?

    All help is appreciated!

  • Gsteiner

    October 24, 2007 at 5:57 pm in reply to: Sync Issues with FCP and ProTools

    As far as I know it’s 24 fps non-drop. I’m not personally familiar with 24 fps drop-frame, unless you were referring to 23.976?

    The sequence settings in FCP are listed as 24 fps and the time code “appears” to confirm this. Same in ProTools. Is there any particular place I should look in FCP and PT to verify that it’s not using some form of drop frame other than the sequence settings in FCP and the session setup in PT?

    Thanks!

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