shithub: libvpx

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Change parameters for VP9 dynamic resizing.

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

Change-Id: I086f840cdec3c6bdaa9acfe11346d919e445973d

--- 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;