How to calculate the number of frames per camera movement speed?

[Mykyta Sichkar]

Hello, my name is Nikita. I do 3D visualization of interiors and exteriors. And I would like to learn how to make 3D animation. I have a question. The number of frames makes the video smoother. It is quite easy to organize when we animate a thing like a ball. But I have another problem, my camera moves around the room. How can I calculate the optimal number of frames relative to the speed of the camera movement along its trajectory? Because if the camera moves over a large distance, we have the effect of jerking video.

Here is an example of my video.

https://www.youtube.com/watch?v=sGH4lg-hEd8

I will be glad to hear from you.

[Martin Bergwerf]

Hi Nikita,

I must say, that I have never heard of anyone calculating the Frame Rate based on Camera speed, but maybe that is a thing…

How about you just start with something sensible (24 FPS, or so) and then increase the Frame Rate until it looks smooth enough.

[Dwayne Savage]

The frame rate doesn’t cause the jerking, as long as it’s 24 FPS.It’s the interpolation. You just need to add more keyframe. It has more to do with spacing and timing. 

[Omar Domenech]

I know what you mean, it has happened to me when movement is not fast enough for there to be motion blur but not slow enough for the 24 frames in a second to cause smooth motion. You get in this middle void where the video feels like it’s stepping. So it’s as easy as changing the frame rate from 24 to 60, that way you have enough frames in between so the motion doesn’t feel stuttering. Render times are going to jump a lot, but for a butter smooth camera motion it’s worth it. 

[Phil Osterbauer]

All great answers here. As I say in the video its important to understand the frame rate best for the project and to do the research of what that might be. (And you’re doing exactly that by asking the important questions here, great job! 🙂 ) 24fps is used for things like motion pictures and tv broadcasts. Its known to have that cinematic “feel” largely due to the way movies were shot on film back in the day and the technological limits cameras had. As Omar was saying, 24fps is also known for its motion blurr, so if you want high fidelity camera movements for your visualizations that jitteryness is going to stand out because of the lack of blurr being created. Its pretty standard to start at 30fps for commercial visualizations and bump to 60 if need be and can afford to do it.

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