const REFINE_REACH: u32 = 10;Expand description
The most quantizer steps off the frame’s own a refined region is coded at
(VaapiEncoder::refines): on Intel’s iHD (N97, H.264 on the low-power entry point, 3 Mbit/s
CBR at 1080p60) a region 10 finer came out at a quantizer 7 under the rest with the rate held,
25 finer at 20 under it at 54 Mbit/s, the rate control lost; 5 finer, a delta the driver
codes natively, moved nothing.