Chroma saturation boost (YCbCr output). 1 = unchanged.
Color model. "ycbcr" is 4:2:0 (half-res chroma w/ truncated MV).
P-frame duplication: re-apply the frame's motion this many extra
times per frame, dragging the accumulator further along the field
(the bloom/smear amplifier). 0 = one normal application.
Motion search radius, in steps. Coverage = searchRange * searchStep px.
Pixels per search step. Widens coverage at a fixed candidate count.
Add the residual during decode (off = pure motion).
Stage shown on the canvas.
Motion-estimation block size in px.