tree b46ffb2f29e05c33928ce5ba9b56dbf31926c6e7
parent 8d92f8f1228f35297c84255b0868c1290470cbe0
author Urvang Joshi <urvang@google.com> 1545359098 -0800
committer Urvang Joshi <urvang@google.com> 1545944960 +0000

In some cases use a shorter GF interval.

We break early anytime after min_gf_interval in certain cases, based on
some motion vector stats.

This is based on similar logic in VP9, tweaked for AV1.

Significant PSNR improvement on some videos. For example:
midres/station2_480p25:   -8.933%
lowres/tennis_sif:        -3.813%

No regressions (over noise level).

STATS_CHANGED

Change-Id: I7682f9a4c08354b4a224a34fdb68ff688a2cee01