shithub: libvpx

Info  •  Files  •  Log  •  Branches

vp9: 1 pass cbr: allow noise estimation down to 360p.

Also adjust some thresholds for noise level setting.

Change-Id: I7e03d7057ef2061c9447728deb9c6aff5d3da4b7

--- a/vp9/encoder/vp9_encodeframe.c

+++ b/vp9/encoder/vp9_encodeframe.c

@@ -477,8 +477,8 @@

     thresholds[2] = threshold_base >> 2;

     thresholds[3] = threshold_base << 2;

   } else {

-    // Increase base variance threshold based on  estimated noise level.

-    if (cpi->noise_estimate.enabled) {

+    // Increase base variance threshold based on estimated noise level.

+    if (cpi->noise_estimate.enabled && cm->width >= 640 && cm->height >= 480) {

       NOISE_LEVEL noise_level =

           vp9_noise_estimate_extract_level(&cpi->noise_estimate);

       if (noise_level == kHigh)

--- a/vp9/encoder/vp9_noise_estimate.c

+++ b/vp9/encoder/vp9_noise_estimate.c

@@ -26,13 +26,13 @@

   ne->level = kLowLow;

   ne->value = 0;

   ne->count = 0;

-  ne->thresh = 90;

+  ne->thresh = 100;

   ne->last_w = 0;

   ne->last_h = 0;

   if (width * height >= 1920 * 1080) {

     ne->thresh = 200;

   } else if (width * height >= 1280 * 720) {

-    ne->thresh = 130;

+    ne->thresh = 140;

   }

   ne->num_frames_estimate = 20;

 }

@@ -52,7 +52,7 @@

       cpi->oxcf.aq_mode == CYCLIC_REFRESH_AQ && cpi->oxcf.speed >= 5 &&

       cpi->resize_state == ORIG && cpi->resize_pending == 0 && !cpi->use_svc &&

       cpi->oxcf.content != VP9E_CONTENT_SCREEN && cpi->common.width >= 640 &&

-      cpi->common.height >= 480)

+      cpi->common.height >= 360)

     return 1;

   else

     return 0;