tree ea15695d8e9c80ec5ee63943ad92d0aa66b11509
parent 4034b29da7d44f07f12af84b3d7f299a6c10742e
author sdeng <sdeng@google.com> 1560980829 -0700
committer Милена <bezobrazova.2019lena@gmail.com> 1561160104 +0000

Enable tune=ssim in AV1

Got similar results in VP9:
 Data Set   AVG PSNR     SSIM    MS-SSIM
 Lowres       4.9        -5.2    -4.2
 Midres       4.0        -5.7    -5.9
 HDres        4.3        -5.7    -6.1
 Lowres_bd10  3.4        -5.1    -6.2
 Midres_bd10  2.8        -5.4    -6.4
Tests on first 33 frames.

Change-Id: Ib9db1e628900af0de70234a94b7a31f15ff45153