tree 691cb449ff6154c79ae7b1ce21e3766e28e9bce2
parent a128fe458e6b817fdb1009f215c41a23ac563468
author Yunqing Wang <yunqingwang@google.com> 1599799266 -0700
committer Yunqing Wang <yunqingwang@google.com> 1600212342 +0000

Speed lowres and midres high quality encoding

While q_index was low, sped up lowres/midres encoding.

Borg test result at speed 0 showed a speed/quality tradeoff of 100 to 1.
       avg_psnr:  ovr_psnr:  ssim:  speedup:
lowres: 0.135     0.128      0.083   13.9
midres: 0.097     0.095      0.078    9.8

STATS_CHANGED

Change-Id: I2dafc7b4e90f941259c8da01f6f7f742f590aa79