[INFO] Feature, add/update rife frame interpolation

[Selur]

Starting with 24000/1001 fps content and looking at:

Frame: 71928 (= 24000/1001fps * 50*60sec)
with a multiplier of 2, I get frame 143856 (= 2*24000/1001fps * 50*60sec), which is the same.
-> everything seems alright.

Frame: 71928 (= 24000/1001fps * 50*60sec)
with a multiplier of 2.5025, I get frame 180000 (= 2.5025 * 24000/1001fps fps * 50*60sec), which is the same.
-> everything seems alright.

Frame 143856 (= 24000/1001fps * 100*60sec)
with a multiplier of 2.5025 I get frame 360000 (= 2.5025 * 24000/1001fps fps * 100*60sec), which is not the same.
Looking through the frames 359640 seems to be the correct one which corresponds to a multiplier of 2.5.

=> My guess is that that either multiplier can only have 1 or 2 decimals or there is a bug in vs-rife. (reported this to the vs-rife author: https://github.com/HolyWu/vs-rife/issues/17)

So the only workaround I can think of atm. would be to get 2.5025 by using 2.51 (two decimals) in RIFE and then drop frames to archive the desired mult,... which essentially is what you did by using 2.51 and then scaling the frame rate output to 60fps.


Cu Selur