tree b9e9ade427ac0ffefbb8ca783a129f9e9b71548b
parent 12e7c4af64743dc501d6eb8e83adad104a7572d0
author sdeng <sdeng@google.com> 1584566431 -0700
committer Yaowu Xu <yaowu@google.com> 1585235512 +0000

Speed up VMAF pre-processing

by using last frame's filter strength as the initial guess.
VMAF BD-rate changes
--------------------
MODE        midres   hdres  lowres_10bd  midres_10bd
VMAF        -0.50%   0.06%    -1.32%        0.01%
VMAF_W_PP   -1.05%  -0.35%    -0.62%       -0.70%


Compression speed (instruction count) of different modes
--------------------------------------------------------
MODE                 480P       1080P
PSNR (baseline)      1.00x      1.00x
VMAF (before)        1.50x      4.14x
VMAF (after)         1.49x      3.87x
VMAF_W_PP (before)   1.21x      1.45x
VMAF_W_PP (after)    1.16x      1.15x
VMAF_WO_PP           1.19x      3.36x

Full speed test results
-----------------------
Performance counter stats for './aomenc red_kayak_480p.y4m --limit=30
 -o output_new --tune=psnr --cpu-used=1':
   642,437,621,503      instructions:u
      84.889688323 seconds time elapsed
      84.588830000 seconds user
       0.291975000 seconds sys

Performance counter stats for './aomenc red_kayak_480p.y4m --limit=30
 -o output_new --tune=vmaf_with_preprocessing --cpu-used=1':
Before:
   775,025,691,607      instructions:u
     109.458205579 seconds time elapsed
     107.989239000 seconds user
       4.284554000 seconds sys
After:
   747,907,904,154      instructions:u
     105.304168262 seconds time elapsed
     104.205238000 seconds user
       3.659274000 seconds sys

Performance counter stats for './aomenc red_kayak_480p.y4m --limit=30
 -o output_new --tune=vmaf --cpu-used=1':
Before:
   964,828,402,519      instructions:u
     123.807091424 seconds time elapsed
     161.892974000 seconds user
      42.540103000 seconds sys
After:
   958,203,027,249      instructions:u
     166.730655440 seconds time elapsed
     172.417289000 seconds user
      96.809565000 seconds sys

Performance counter stats for './aomenc red_kayak_480p.y4m --limit=30
 -o output_new --tune=vmaf_without_preprocessing --cpu-used=1':
   762,965,561,826      instructions:u
      79.566220976 seconds time elapsed
     118.461060000 seconds user
       4.023039000 seconds sys
------------------
Performance counter stats for './aomenc basketballdrive_1080p50.y4m
 --limit=30 -o output_new --tune=psnr --cpu-used=1':
 1,582,885,665,086      instructions:u
     204.687949181 seconds time elapsed
     203.775777000 seconds user
       0.811887000 seconds sys

Performance counter stats for './aomenc basketballdrive_1080p50.y4m
 --limit=30 -o output_new --tune=vmaf_with_preprocessing
 --cpu-used=1':
Before:
 2,298,587,912,062      instructions:u
     361.306249556 seconds time elapsed
     326.457704000 seconds user
      41.029086000 seconds sys
After:
 1,821,777,148,459      instructions:u
     237.958643869 seconds time elapsed
     233.000579000 seconds user
       6.904995000 seconds sys

Performance counter stats for './aomenc basketballdrive_1080p50.y4m
 --limit=30 -o output_new --tune=vmaf --cpu-used=1':
Before:
 6,543,459,539,854      instructions:u
     553.099946250 seconds time elapsed
    1257.052953000 seconds user
     250.151702000 seconds sys
After:
 6,118,499,090,110      instructions:u
     610.973700082 seconds time elapsed
    1254.925749000 seconds user
     439.220760000 seconds sys

Performance counter stats for './aomenc basketballdrive_1080p50.y4m
 --limit=30 -o output_new --tune=vmaf_without_preprocessing
 --cpu-used=1':
 5,311,331,047,231      instructions:u
     247.754365865 seconds time elapsed
     984.609408000 seconds user
      12.773107000 seconds sys

Change-Id: Ifdcfbccdd976ba537f23cbbfebe144402fa032c6