Thread: 60fps with project set to 23.97fps

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  1. #1 60fps with project set to 23.97fps 
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    If i'm editing on a 23.97 timeline and i want to play my slow-motion (60p) footage in real time, by how much do i need to speed up the footage ? What about 120fps?
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  2. #2  
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    60/23.97 = ~2.5x

    120/23.97 = ~5x
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  3. #3  
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    What percentage amount do i need to speed up?

    I tried 60fps at 150% (In Premiere) but, it does not yield a natural real time look.
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  4. #4  
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    You may want to try a workflow like the one outlined here:

    https://www.youtube.com/watch?v=xKMaZMVeKto
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  5. #5  
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    In premiere, simply right click on the 60p footage in your project window. Go down to MODIFY, then INTERPRET FOOTAGE. A dialogue box will appear and you can set your footage to "assume" another framerate. In your case, it would be 23.976.
    Jess Orsburn
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  6. #6  
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    Quote Originally Posted by LandBridgeMedia View Post
    In premiere, simply right click on the 60p footage in your project window. Go down to MODIFY, then INTERPRET FOOTAGE. A dialogue box will appear and you can set your footage to "assume" another framerate. In your case, it would be 23.976.
    Wont that play it in Slow Mo? I think the goal was to play it in real time.
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  7. #7  
    Senior Member Tommy Davis's Avatar
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    If you're in premiere do the switch around some of LandBridgeMedia's directions. Right click, Modify, Interpret Footage, then set to 60fps instead of 23.976 - Boom you're done. I will say it would be helpful to know what you're editing in and how the footage was captured and imported.
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  8. #8  
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    I shot the footage at 60fps with a project set in camera to 23.97fps. When i playback the footage it plays in slowmo as expected. I import into Premiere. The footage inside my bin is showing 23.976fps. and it plays in slow-motion. I tried interpreting to 60fps, but that makes it play back at a faster speed than realtime. I even tried 30. I could not get a real time speed.
    I sped it up by 200% in a 23.97 timeline and it seems to do the trick.
    So does this mean that 120fps should be sped up 400% to get realtime playback?

    I'm doing some ramping. Thats why i'm asking.

    Thank you.
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  9. #9  
    Senior Member LochnessDigital's Avatar
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    Ah, people in this thread were assuming the 60fps stuff had metadata that also said 60 fps. In your case, you have 60fps stuff with metadata saying 23.976, so the interpreting was already done in camera. So, if you captured 60fps, interpreting to 60fps should be real time. It's odd to me that you're saying it's faster.

    If you don't interpret and leave it as a 23.976 clip, then the speed will need to be 60/23.976 = ~2.50 = 250%. So it's also odd that you're saying 200% looks closer to real time. 200% of 23.976 is ~48 fps. Are you sure you captured 60?

    So for the 120 fps question, It should be ~500%. But I'm not sure that's the right answer since your copy of Premiere seems to be defying math.
    Aaron Lochert
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