How can I set the fps limit to exactly 24?

[JKerman]

I'm doing a KSP cinematic that requires a framerate of 24 frames per second. Can I get this framerate by editing the config file? Also, using capture software doesn't apply because I have a motion blur mod installed, and the blur will look wrong if the framerate is too high.

[Vanamonde]

I do not know the answer, unfortunately, but I have moved your question to the subforum where you are likely to encounter someone who does. Good luck. 

[Galileo]

If your monitor can be set to 24hz refresh rate, you would just need to enable vsync. It will lock the FPS to the refresh rate of the monitor. 
 

I don’t think you can set it via cfg or within the settings.

Edited February 17, 2020 by Galileo

[KerbMav]

There actually is a line in the settings file. Something with frame and limit even. Exact phrase escapes me right now.

[Starman4308]

One possible issue would be that while 24 FPS works decently for some types of media, video games and some other 3D-rendered scenes work poorly at 24 FPS. With physical cameras, objects in motion naturally have a bit of blur to them because the shutter speed is finite. With video games, the effective shutter speed is instant: you have no blur baked into it, so the illusion of movement can be broken by running at low framerates.

While I don't have experience in video rendering, I suspect the ideal thing to do would be to run at a higher framerate and then post-process, interpolating multiple frames captured from KSP into a single video frame.