tree 8f964fc0cb0194db56265efc0b98bd1e88996f4b
parent 7697d289f4c2cc2d5826d4e496e1c3dd6f10b7ad
author Marco Paniconi <marpan@google.com> 1642624292 -0800
committer Marco Paniconi <marpan@google.com> 1642654369 +0000

rtc: Avoid Q adjustment if frame_avg_sad is zero

Add parameter for the frame level average sad,
computed in the scene detection. Use this to
avoid the source_sad/content adjustment to Q if
frame_avg_sad is 0, because it can cause Q to
decrease too fast after scene change.

Also fix bug where cyclic refresh was not turned
off on scene change.

Reduces overshoot/big frames after scene change,
and average encoded bitrate is ~10% closer to target
for 500k on some screen clips. Small speedup (~2-3%)
and average psnr drops ~0.3dB.

Change-Id: I4fc93c9801bad5d8234779a7bfb81632f2f47b17