import vapoursynth as vs

core = vs.core

clip = core.std.AssumeFPS(video_in, fpsnum=int(container_fps * 1000), fpsden=1000)

sup = core.mv.Super(clip, pel=2)
bvec = core.mv.Analyse(sup, isb=True)
fvec = core.mv.Analyse(sup, isb=False)
hfr = core.mv.BlockFPS(
    clip,
    sup,
    bvec,
    fvec,
    num=int(display_fps * 1000),
    den=1000,
    thscd1=140,
    thscd2=38,
)
hfr.set_output()