mvRateBias property
Bias added to motion-search candidate cost per pel of MV
magnitude: cost = SAD + mvRateBias * (|dy| + |dx|). Trims the
per-MB MV-delta cost on low-motion VC content by preferring
shorter MVs when SAD is comparable. 0 disables (default), keeping
behaviour bit-identical to the pure-SAD search.
Implementation
final int mvRateBias;