Cinematic effect on GoPro

[tormento]

I have bought a GoPro some weeks ago and I am playing with the various possible settings.

I have just learned that to give a video a "cinematic" effect, it's necessary to use 24p (or around that value) and double that for exposure time speed.

I usually shoot with 4k60 or 2.7k60 to have clear images that I can use as screenshot or photo.

Is possible to "render" with motion blur or other means from 60p to 24p?

[FranceBB]

I personally don't like 23.976fps as it stutters and it's noticeable; still, movies are actually at this framerate, so I kinda had to learn to live with that.
Anyway, since you have an higher frame-rate and you have to go down to a lower framerate, you can decimate using a constant pattern like ChangeFPS(23.976), but you won't get blur out of it.
In order to have a sort of motion-blur like effect, I would personally blend frames together using ConvertFPS(23.976); blended frames will look like as if they are out of focus, while still objects won't be blended and will therefore look sharp.
You could also use TemporalSoften to blur frames together, however keep in mind that TemporalSoften is limited to 7 frames max TemporalSoften(7,255,255,0,2).

Going back to 2003, there's BigBlur by Didiee: https://forum.doom9.org/showthread.php?t=62870

[smok3]

I had selectively applied cc force motion blur on specific shots in timeline, like pans and huge shakes, but the entire concept is questionable.

[poisondeathray]

QTGMC has a shutter speed motion blur option, mvtools2 has mflowblur

[Kisa_AG]

Is possible to "render" with motion blur or other means from 60p to 24p?

Yes, mflowblur from mvtools2 can do it reasonably good.

Try something like this (motion blur mathematically is around 270 degree, but visually it's slightly less, let's say 230):
########
super = MSuper(rfilter=2)

backward_vectors = MAnalyse(super, isb = true, truemotion=true, search = 3, delta = 1, plevel=2)
forward_vectors = MAnalyse(super, isb = false, truemotion=true, search = 3, delta = 1, plevel=2)

forward_re = MRecalculate(super, forward_vectors, truemotion=true, blksize=16)
backward_re = MRecalculate(super, backward_vectors, truemotion=true, blksize=16)

MFlowBlur(super, backward_re, forward_re, blur=80, thSCD1=800, thSCD2=200)
########