commit 419456617ef9991abf54d106fdb1b776f04c61bd
author jackychen <jackychen@google.com> Mon Sep 14 16:15:07 2015 -0700
committer jackychen <jackychen@google.com> Mon Sep 14 16:17:52 2015 -0700
tree 66e564e9cb8783e377b2e581066e8cc1e255c712
parent 0b762e0c0c8496f6b560b6f4727b1ee04b920141

Change parameters for VP9 dynamic resizing.

Use a smaller window in dynamic resizing and wait a shorter
time after key frame.

Change-Id: I086f840cdec3c6bdaa9acfe11346d919e445973d

vp9/encoder/vp9_ratectrl.c

diff --git a/vp9/encoder/vp9_ratectrl.c b/vp9/encoder/vp9_ratectrl.c
index f57c525..62ddc0a 100644
--- a/vp9/encoder/vp9_ratectrl.c
+++ b/vp9/encoder/vp9_ratectrl.c
@@ -1832,8 +1832,8 @@
   }
   // Resize based on average buffer underflow and QP over some window.
   // Ignore samples close to key frame, since QP is usually high after key.
-  if (cpi->rc.frames_since_key > 2 * cpi->framerate) {
-    const int window = (int)(5 * cpi->framerate);
+  if (cpi->rc.frames_since_key > 1 * cpi->framerate) {
+    const int window = (int)(4 * cpi->framerate);
     cpi->resize_avg_qp += cm->base_qindex;
     if (cpi->rc.buffer_level < (int)(30 * rc->optimal_buffer_level / 100))
       ++cpi->resize_buffer_underflow;