ref: 360217a233bf67f78a3ab60a6a36e75b20cef816
parent: a3128ad33af5a348269c01c3fd3c30a1d8d53f39
author: Jerome Jiang <jianj@google.com>
date: Tue Nov 15 05:37:12 EST 2016
vp9: Speed 8: More aggresive golden skip for low res. Add a new, more aggresive short circuit: short_circuit_low_temp_var = 3 to skip golden of any mode when variance is lower than threshold for low res. This change only affects speed = 8, low resolution. Metrics for avgPSNR/SSIM on rtc_derf (low resolution) show loss of 0.27/0.31%. On Nexus 6, the encoding time is reduced by ~2.3% on average across all low-res clips. Visually little change on rtc_derf clips. Change-Id: Ia8f7366fc2d49181a96733a380b4dbd7390246ec