tree c6ee0616ae372c6f88563149c2f38a1f1c60141f
parent 75225cb833ff95ef29b97d518c18a77fc72ca990
author sdeng <sdeng@google.com> 1583001757 -0800
committer Sai Deng <sdeng@google.com> 1583191002 +0000

Speed up tune=vmaf_with_preprocessing mode

Disable RDO multiplier scaling for this mode to save encoding time.
The mode differences can be summarized as following:
                           tune=vmaf   vmaf_with_pp   vmaf_without_pp
Frame based preprocessing      X             V               X
Block based preprocessing      V             X               X
RDO multiplier scaling         V             X               V
QP adjustment                  V             V               V

The VMAF BD-rate change
-----------------------
Baseline: tune=psnr
                old       new
Lowres_10bd   -25.88%   -25.44%
Midres        -27.18%   -25.50%
Midres_10bd   -30.73%   -30.90%
Hdres         -36.72%   -36.03%

Fyi,
             tune=vmaf    vmaf_without_preprocessing
Lowres_10bd   -26.90%               -5.06%
Midres        -28.19%               -4.77%
Midres_10bd   -33.10%               -4.24%
Hdres         -38.04%               -4.59%

Speed test for different modes
------------------------------
Performance counter stats for './aomenc red_kayak_480p.y4m --limit=30
 -o output_new --tune=vmaf_without_preprocessing --cpu-used=1'
New tune=vmaf_with_preprocessing
   774,724,635,890      instructions:u
     104.010053526 seconds time elapsed
     104.012937000 seconds user
       3.858861000 seconds sys

Old tune=vmaf_with_preprocessing
 1,310,749,642,864      instructions:u
      93.577722852 seconds time elapsed
     226.912579000 seconds user
       5.209748000 seconds sys

Fyi,
Tune=psnr
   649,048,190,935      instructions:u
      84.420997459 seconds time elapsed
      84.107771000 seconds user
       0.303984000 seconds sys

Tune=vmaf
 1,412,870,451,983      instructions:u
     153.464040921 seconds time elapsed
     262.993312000 seconds user
      81.008326000 seconds sys

Tune=vmaf_without_preprocessing
 1,230,166,789,702      instructions:u
      83.081840326 seconds time elapsed
     206.672262000 seconds user
       6.002862000 seconds sys

Change-Id: Idf3808ec5926a1d7c9b793459198640cb023f497