shithub: libvpx

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vp9-rtc: Increase thresh for scene detection

For CBR screen content mode. Makes it more
robust to false detections.

Change-Id: Icad89adb6f79b530b589bba2c71ba88ee5088d37

--- a/vp9/encoder/vp9_ratectrl.c

+++ b/vp9/encoder/vp9_ratectrl.c

@@ -2960,7 +2960,7 @@

     int scene_cut_force_key_frame = 0;

     int num_zero_temp_sad = 0;

     uint64_t avg_sad_current = 0;

-    uint32_t min_thresh = 10000;

+    uint32_t min_thresh = 20000;  // ~5 * 64 * 64

     float thresh = 8.0f;

     uint32_t thresh_key = 140000;

     if (cpi->oxcf.speed <= 5) thresh_key = 240000;