50 fps isn't smooth when I change the speed to 50%

Forum|Forum|5 years ago
December 17, 2020
3 replies
13968 views

I have footage in 50fps, and when the clip is on the 25fps timeline - I want to get a slow mo effect so I change it to 50%, and it's comes through choppy - as if I had put 50% on a 25fps clip.

The footage is all 50fps. The timeline is 25fps. I have other footage on the same timeline using the same camera that I made 50% speed and it looks smooth just as it usually does.

Any ideas, much appreciated! 🙂

Editing

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Semmanuel

Participating Frequently

Hello, I have the same problem. The only solution I could come up with is nesting the clip and setting the nested sequence to 50fps. When I go back to the main sequence, it will be in slow motion.

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basil1891

Inspiring

For such type conversions (50fps to 25, or 60 to 30) I'd use option "interpret footage", that guarantee smoothness (assuming your shutter speed was 180deg or so). But, you may try alternative approach: https://youtu.be/LDO9RIA_g2Y

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BrettHowe

Known Participant

This is the way to go. You can have duplicates in your project window interpreted at 25 and 50 for example. If it was shot at 50fps....the 25 version is all 50% slomo, and perfect quality.

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Michael Grenadier

Legend

have you tried "optical flow" in the frame blending options ( I think that's what it's called - not at my edit system at the moment). Will need rendering

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