21.07.2022, 19:23
Might also be that you are running out of vram. 
works fine here.
But:
crashes,...

# Imports
import vapoursynth as vs
# getting Vapoursynth core
core = vs.core
# Loading Plugins
core.std.LoadPlugin(path="i:/Hybrid/64bit/vsfilters/MiscFilter/MiscFilters/MiscFilters.dll")
core.std.LoadPlugin(path="i:/Hybrid/64bit/vsfilters/FrameFilter/RIFE/RIFE.dll")
core.std.LoadPlugin(path="i:/Hybrid/64bit/vsfilters/SourceFilter/LSmashSource/vslsmashsource.dll")
# source: 'C:\Users\Selur\Desktop\sample25seconds.mkv'
# current color space: YUV420P8, bit depth: 8, resolution: 1920x1080, fps: 29.97, color matrix: 709, yuv luminance scale: limited, scanorder: progressive
# Loading C:\Users\Selur\Desktop\sample25seconds.mkv using LWLibavSource
clip = core.lsmas.LWLibavSource(source="C:/Users/Selur/Desktop/sample25seconds.mkv", format="YUV420P8", cache=0, fpsnum=30000, fpsden=1001, prefer_hw=0)
# Setting color matrix to 709.
clip = core.std.SetFrameProps(clip, _Matrix=1)
clip = clip if not core.text.FrameProps(clip,'_Transfer') else core.std.SetFrameProps(clip, _Transfer=1)
clip = clip if not core.text.FrameProps(clip,'_Primaries') else core.std.SetFrameProps(clip, _Primaries=1)
# Setting color range to TV (limited) range.
clip = core.std.SetFrameProp(clip=clip, prop="_ColorRange", intval=1)
# making sure frame rate is set to 29.970
clip = core.std.AssumeFPS(clip=clip, fpsnum=30000, fpsden=1001)
# adjusting frame with SelectEvery
clip = core.std.SelectEvery(clip=clip, cycle=5, offsets=[0, 1, 2, 3])
clip = core.std.AssumeFPS(clip=clip,fpsnum=24000, fpsden=1001)# new fps: 23.976
# cropping the video to 1432x1080
clip = core.std.CropRel(clip=clip, left=244, right=244, top=0, bottom=0)
clip = core.misc.SCDetect(clip=clip,threshold=0.150)
# adjusting color space from YUV420P8 to RGBS for vsRIFE
clip = core.resize.Bicubic(clip=clip, format=vs.RGBS, matrix_in_s="709", range_s="limited")
# adjusting frame count&rate with RIFE
clip = core.rife.RIFE(clip, model=9, multiplier=2.500000, sc=True) # new fps: 59.94
# needed 8
# adjusting output color from: RGBS to YUV420P10 for x265Model
clip = core.resize.Bicubic(clip=clip, format=vs.YUV420P10, matrix_s="709", range_s="limited", dither_type="error_diffusion")
# set output frame rate to 59.94fps
clip = core.std.AssumeFPS(clip=clip, fpsnum=60000, fpsden=1001)
# Output
clip.set_output()
But:
# Imports
import vapoursynth as vs
# getting Vapoursynth core
core = vs.core
# Loading Plugins
core.std.LoadPlugin(path="i:/Hybrid/64bit/vsfilters/Support/fmtconv.dll")
core.std.LoadPlugin(path="i:/Hybrid/64bit/vsfilters/MiscFilter/MiscFilters/MiscFilters.dll")
core.std.LoadPlugin(path="i:/Hybrid/64bit/vsfilters/FrameFilter/RIFE/RIFE.dll")
core.std.LoadPlugin(path="i:/Hybrid/64bit/vsfilters/SourceFilter/LSmashSource/vslsmashsource.dll")
# source: 'C:\Users\Selur\Desktop\sample25seconds.mkv'
# current color space: YUV420P8, bit depth: 8, resolution: 1920x1080, fps: 29.97, color matrix: 709, yuv luminance scale: limited, scanorder: progressive
# Loading C:\Users\Selur\Desktop\sample25seconds.mkv using LWLibavSource
clip = core.lsmas.LWLibavSource(source="C:/Users/Selur/Desktop/sample25seconds.mkv", format="YUV420P8", cache=0, fpsnum=30000, fpsden=1001, prefer_hw=0)
# Setting color matrix to 709.
clip = core.std.SetFrameProps(clip, _Matrix=1)
clip = clip if not core.text.FrameProps(clip,'_Transfer') else core.std.SetFrameProps(clip, _Transfer=1)
clip = clip if not core.text.FrameProps(clip,'_Primaries') else core.std.SetFrameProps(clip, _Primaries=1)
# Setting color range to TV (limited) range.
clip = core.std.SetFrameProp(clip=clip, prop="_ColorRange", intval=1)
# making sure frame rate is set to 29.970
clip = core.std.AssumeFPS(clip=clip, fpsnum=30000, fpsden=1001)
# adjusting frame with SelectEvery
clip = core.std.SelectEvery(clip=clip, cycle=5, offsets=[0, 1, 2, 3])
clip = core.std.AssumeFPS(clip=clip,fpsnum=24000, fpsden=1001)# new fps: 23.976
# cropping the video to 1432x1080
clip = core.std.CropRel(clip=clip, left=244, right=244, top=0, bottom=0)
clip = core.misc.SCDetect(clip=clip,threshold=0.150)
# adjusting color space from YUV420P8 to RGBS for vsRIFE
clip = core.resize.Bicubic(clip=clip, format=vs.RGBS, matrix_in_s="709", range_s="limited")
# adjusting frame count&rate with RIFE
clip = core.rife.RIFE(clip, model=9, multiplier=2.500000, sc=True) # new fps: 59.94
# needed 8
# Resizing using 10 - bicubic spline
clip = core.fmtc.resample(clip=clip, kernel="spline16", w=1920, h=1448, interlaced=False, interlacedd=False) # resolution 1920x1448
# adjusting output color from: RGBS to YUV420P10 for x265Model
clip = core.resize.Bicubic(clip=clip, format=vs.YUV420P10, matrix_s="709", range_s="limited", dither_type="error_diffusion")
# set output frame rate to 59.94fps
clip = core.std.AssumeFPS(clip=clip, fpsnum=60000, fpsden=1001)
# Output
clip.set_output()
----
Dev versions are in the 'experimental'-folder of my GoogleDrive, which is linked on the download page.
Dev versions are in the 'experimental'-folder of my GoogleDrive, which is linked on the download page.