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Activity Forums Apple Final Cut Pro Working with slo motion footage

  • Working with slo motion footage

    Posted by David Mayer on November 15, 2017 at 11:42 pm

    I shot super slo motion with my Sony FS5. 240 fps. Should be 8 times slower than live action. In Final Cut it is 4 times slower. Is there an operation in Final Cut to stretch it out to its full value? (Slowing it down does not work – just doubles some of the frames and degrades the quality.)

    iMac (Retina 5K, 27 inch, Late 2015)
    4 GHz Intel Core i7
    16 GB 1867 MHz DDR3
    OS X 10.12.5
    Final Cut Pro X (10.2.3)
    Canon C100
    Sony FS-5
    Pioneer BD-RW BDR-206D (Blu-ray)

    Jeremy Garchow replied 8 years, 5 months ago 3 Members · 4 Replies
  • 4 Replies
  • Noah Kadner

    November 16, 2017 at 12:24 am
  • Jeremy Garchow

    November 16, 2017 at 5:23 pm

    [David Mayer] “Should be 8 times slower than live action. “

    What frame rate is your timeline?

    I assume you are working in a 29.97 timeline. Did you shoot at 29.97 in your camera? Meaning, I know you shot at 240, but the camera stamps the footage with a frame rate. What is it?

  • Noah Kadner

    November 16, 2017 at 8:35 pm

    Believe you can set the timebase as metadata in the F55- it’s possible that isn’t being read by FCPX. If it’s not, feel free to adjust with retiming.

    Noah

    FCPWORKS – FCPX Workflow
    FCP Exchange – FCPX Workshops
    XinTwo – FCPX Training

  • Jeremy Garchow

    November 16, 2017 at 9:10 pm

    [Noah Kadner] “Believe you can set the timebase as metadata in the F55”

    Yes, the system frequency is set at either ~24, 25, ~30, 50 or ~60.

    So 240fps can be 10 times as slow, or 4 times as slow as the timeline speed if the camera system frequency and timeline fps match.

    And if the system frequency is set to something other than the FCPX timeline fps, then you will get double frames, as David says.

    You are essentially playing 24fps footage in a 30fps timeline, or some combination therein.

    The “Automatic Speed” command should solve this, automatically adjusting the relative clip speed to the timeline fps, resulting in 1:1 playback.

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