tree bb22d192ca4cb1513d511759509aeb1e584e8352
parent f88cd6c63e81e3424d985affc1689ca4bc99569a
author Julio Barba <juliobbv@gmail.com> 1769569034 -0500
committer Wan-Teh Chang <wtc@google.com> 1771010709 -0800

tune=ssimulacra2 efficiency tweaks

- Adjusted QP -> QM level formula. Small efficiency gains in
  SSIMULACRA 2 scores (~0.2%) for several QP regions (e.g.
  QP 25, QP 40-50).
- Further increased chroma delta q boost for 4:2:0 chroma
  subsampling mode. Similar average SSIMULACRA 2 scores, slightly
  better 10th percentile scores.

Daala subset1 was used to benchmark improvements.

Bug: aomedia:401234702
Change-Id: I93b481abc1068e66fe4cdbebe05f7cad1c4c5fa7