ref: eff68a3a4df99b8f475a1e3e5eb842bcb928fe00
parent: a3128ad33af5a348269c01c3fd3c30a1d8d53f39
author: Jerome Jiang <jianj@google.com>
date: Mon Nov 14 05:22:00 EST 2016
vp9: Speed 8: Turn off 4x4avg for low-res non-key frames. Changes only affects speed = 8 for low resolutions. Metrics for avgPSNR/SSIM on rtc_derf (low resolutions) show loss of 0.5/0.6%. On Nexus 6, the encoding time is reduced by ~5.9% on average across all low-res clips. Visually little/no change on rtc_derf clips. Change-Id: I68dd50e558d72dcc1af8317d224bfae5e3bd872d