tree 42a8d7150f434d5a69b4480d14132d8a1d26267b
parent 8a191ef9cc3f0e9abc361ecc2331bec609a77af7
author Debargha Mukherjee <debargha@google.com> 1585123293 -0700
committer Debargha Mukherjee <debargha@google.com> 1585178003 +0000

Rework perform_coeff_opt speed feature

Reworks speed feature to skip coefficient
optimization based on mse/qstep^2 rather than
mse alone.

Seems to provide 5-15% speed-up for complex videos
at speeds 1 and 2.
BDRATE (hdres2, 17 frames, q mode): shows a slight improvement.

The thresholds need to be adjusted somewhat for optimal
performance.

STATS_CHANGED

Change-Id: I67133f980b6201d42546339b45ff4910541ebab0