Slowmotion en StasyQ 60fps? (read)

kpoviv

I have a question about slow motion.
This StasyQ video is recorded at 240fps and the video is at 60fps. That is to say that it is at a quarter speed.
I wanted to know if it is the same to record with a camera at 120fps and put the video at 30fps.
What is the difference? Maybe it's a silly question, but it would be nice for me to know the answer.
The reason for this question is because cameras that record at 240fps are not cheap.
https://drive.google.com/file/d/1A3DwbVLIMZz42wlh32YbihAFXlZZpeF8/view?usp=sharing

Rakly3

kpoviv

This StasyQ video is recorded at 240fps and the video is at 60fps. That is to say that it is at a quarter speed.
I wanted to know if it is the same to record with a camera at 120fps and put the video at 30fps.

assuming it's not a conversion, then yes, it's the same amount of slowdown. But the 30fps will in this case likely be noticeable to the naked eye. I would suggest interpolating from 30fps to 60fps but make sure to keep all original keyframes.

A 100% sure way to accomplish this would be to extract all individual frames, then interpolate and compile the video again with all original + interpolated frames. DAINapp is free tool specially made for this but only works with Nvidia.

Googling for the app will almost certainly land you an page to buy it, or Patreon. But it's available for free on github.
https://github.com/BurguerJohn/Dain-App/releases/tag/1.0

kpoviv

Rakly3
I have a (poor) Nvidia 1050ti 4gb and it didn't work for me. What I have been able to do is extract the folder with all the frames. Any solution with Davinci or with Premiere?

Rakly3

kpoviv Which part isn't working for you? Interpolating? What's the frame size of the video/images?

kpoviv

Rakly3 Already solved. But there is not much difference with the slowmotion of the Davinci Resolve program and it takes a long time. I reduced the speed of the video to x8. And I compared it to Davinci, the program is a little bit better. The image is not so distorted.
Here I leave you the tests.
https://drive.google.com/file/d/1jK0mhLnJYymPWCjcl37VjdGMj5fuuYhB/view?usp=sharing

Rakly3

kpoviv

I reduced the speed of the video to x8.

yeah, if you double the amount of frames you have to double the speed from 30 fps to 60 fps
Glad you found a solution!

the program is a little bit better

A lot still depends on which settings you use 🙂 With DaVinci or similar software you're not 100% sure you keep all original keyframes. (I'm not saying it can't or doesn't)
Progressive Interpolating can take a long time yes.