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How much fps are required for smooth slow motion?

Last response: in Graphics & Displays
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May 18, 2012 1:05:18 PM

Hello,

I have been trying to make a ''Twixtor'', but I have encountered a problem.
When I try to make it play in slow motion (under 30% velocity) it gets choppy, though it was recorded at 91 fps in MW2 and 50 to 60 fps in BF3.
Isn't that enough to make it at least run smooth at 25% velocity?
I have seen videos where it was recorded at 60 fps, and they used 15% velocity and 3% velocity while it was really smooth, and my videos are choppy when recorded at 91 fps and using 30% velocity.
I am using Sony Vegas 7 pro.
Can someone help me? .

Thank you for reading.
May 18, 2012 2:06:42 PM

Scaleo said:
Hello,

I have been trying to make a ''Twixtor'', but I have encountered a problem.
When I try to make it play in slow motion (under 30% velocity) it gets choppy, though it was recorded at 91 fps in MW2 and 50 to 60 fps in BF3.
Isn't that enough to make it at least run smooth at 25% velocity?
I have seen videos where it was recorded at 60 fps, and they used 15% velocity and 3% velocity while it was really smooth, and my videos are choppy when recorded at 91 fps and using 30% velocity.
I am using Sony Vegas 7 pro.
Can someone help me? .

Thank you for reading.


Dont hold me to this but I think since you want 25% speed, you would need to record at 4 times 30fps for smooth video so around 120 fps for very smooth slow motion.
a b U Graphics card
May 18, 2012 2:30:24 PM

It could simply be that the slow motion videos that were smooth used post processing to fill in the gaps in between frames, much like a tween, or the way 240hz HDTVs upscale things.
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May 18, 2012 3:04:30 PM

mad2 said:
Dont hold me to this but I think since you want 25% speed, you would need to record at 4 times 30fps for smooth video so around 120 fps for very smooth slow motion.

Okay, but how do people get such a smooth slow motion scene when MW2 can't go above 91 fps?
May 18, 2012 3:13:28 PM

Scaleo said:
Okay, but how do people get such a smooth slow motion scene when MW2 can't go above 91 fps?



It possible to uncap the framerate of mw2 i believe. Prob a conf file with vsync or something of the sort.
!