shithub: libvpx

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vp9: Put lower limit on frames_to_key adjustment to gf interval.

For 1 pass vbr.

Change-Id: I6c1c1cca3944150140e896e175b07ed518641b9b

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

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

@@ -1514,6 +1514,8 @@

   if ((rc->frames_to_key <= 7 * rc->baseline_gf_interval >> 2) &&

       (rc->frames_to_key > rc->baseline_gf_interval)) {

     rc->baseline_gf_interval = rc->frames_to_key >> 1;

+    if (rc->baseline_gf_interval < 5)

+      rc->baseline_gf_interval = rc->frames_to_key;

     rc->constrained_gf_group = 1;

   } else {

     // Reset since frames_till_gf_update_due must be <= frames_to_key.