Thread: How to being high speed/slow mo footage back into real time?

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  1. #1 How to being high speed/slow mo footage back into real time? 
    Senior Member
    Join Date
    May 2011
    I have some red footage that was purposely shot for slow motion, according to the metadata it was shot at 100fps.
    Our project is 23.976fps and I would like to get it back to real time to potentially use some of it in that manner.

    There is some lip syncing but no scratch track or slate on the file.

    To find out how much to speed it up as, is it a math equation - 100/24fps (rounding for the sake of argument), so it would need to be sped up by 4.16?
    Last edited by Joe Riggs; 01-13-2020 at 10:31 PM.
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  2. #2  
    Senior Member
    Join Date
    Dec 2010
    Toronto & Vancouver
    Yes. Your shutter speed will seem pretty cranked, but if it’s super jarring you can add motion blur after (I think AE actually has a “motion blur” effect that allows you to select which shutter speed you want.)

    Also for future reference, in DSMC2 there’s a way to save the audio as a separate wav file while recording in VariSpeed (check the manual, as I don’t know off hand where it is.)
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  3. #3  
    Join Date
    Apr 2019
    Los Angeles
    while shooting higher frame rates you'll notice something that reads "varispeed recording" over the audio area on your screen. If you touch and hold there you can enable a sidecart wav which you can later connect in post
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  4. #4  
    Speed it up footage 400 % then stretch audio to fit. You dont want to speed up your footage in uneven numbers. The audio stretch will not be noticable.

    And yes you might wabt to add motion interpret motionblur when doing the speedup to get away from studdering.
    Björn Benckert
    Creative Lead & Founder Syndicate Entertainment AB
    VFX / Flame / Motion capture / Monstro
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