tree 96df72ab8e4c4f0c6d3578805c1ed2baf42cb97a
parent c77c8fbdf27e8b4326283de0188be1267325bab7
author Marco Paniconi <marpan@google.com> 1605903553 -0800
committer Marco Paniconi <marpan@google.com> 1605917345 -0800

rtc: Reduce threshold[0] in var part for sp 9 high resoln

For speed 9 (where force_large_partition_blocks is on) and
resolutions above 480p: the current threshold[0] (to split 128x128)
can become equal to or larger than the threshold[1] (to split 64x64),
which should not happen.

This change makes sure threshold[0] stays smaller than threshold[1].

Speed differene on a few 720p clips is small (within ~1-2%), but
bdrate on 720p clips have good gains (from ~1-5%).
avg bdrate gain ~0.9 on rtc_set.

Change-Id: I1bb155b96478c520b71199a48694830d0171370b