ref: 9c2c234a0b8f9c08719ac1fa286988a0a3626fd0
parent: 8dbf0dcc67caaed0042ca97988a1fd61afb2e724
author: Jingning Han <jingning@google.com>
date: Thu Jul 12 05:02:01 EDT 2018
Enable tpl model for speed 0
Enable adaptive Lagrangian multiplier for arf in speed 0, AQ mode 0,
and low bit-depth settings. This improves the peak compression
performance:
avg PSNR overall PSNR SSIM
low -0.462% -0.535% -0.358%
mid -0.780% -0.857% -0.868%
hd -0.914% -1.017% -0.471%
720p -0.624% -0.671% -1.553%
nflx2k -0.764% -0.784% -0.908%
The encoding time at speed 0 is slightly changed to be faster or
slower:
city_cif 1000 kbps
78.2 seconds -> 78.1 seconds
bus_cif 1000 kbps
98.6 seconds -> 98.8 seconds.
Change-Id: I18e7337bb61d985cbd3cf29e56439a6cdf675389