tree 0f0660d710e99f4da90323524b745279f44a2ed6
parent 5195d6d785045bf42b1540fb9e1ec7e4027b8bf5
author Marco Paniconi <marpan@google.com> 1638224059 -0800
committer Marco Paniconi <marpan@google.com> 1638241031 +0000

rtc: Fix to segment refresh logic for comp pred

For compound prediction mode: segment#2 was forced
when base_segment was not set. For noisy content, since
segment#2 has much lower QP, it can lead to larger
variation in frame sizes. Conditoning the logic
on the noise_level reduces the frame size variance
by ~20-30% in noisy clips (e.g., desktop_office1.720p).

On the rtc set for speed 9, clips with noise
(dark, testnoise, marcooffice) have bdrate
gains of ~1-1.3%. Average bdrate gain over testset
is small (0.07) as this is only affects the few noisy
clips. No speed change observed.

Change-Id: I44c7d0af0072eac6f8b7b1b6fdb1380401f00a90