shithub: libvpx

Download patch

ref: 492d52b9cc549f0d8d8d6f370425a0cee16237eb
parent: ae3a1733526eb8d70ff24e593f3f0f95418e7f13
author: Marco <marpan@google.com>
date: Tue Jun 20 08:20:52 EDT 2017

vp9: Adjust key-frame pars in vpx_temporal_svc_encoder.

Sample encoder change: reduce max-intra-rate to 1000 and
buf-initial to 600. Paramaters affect target size of key frame.

Change-Id: I2be6bc2927f5fa74e19e1efa3fb574d23a503300

--- a/examples/vpx_temporal_svc_encoder.c
+++ b/examples/vpx_temporal_svc_encoder.c
@@ -637,7 +637,7 @@
   if (strncmp(encoder->name, "vp9", 3) == 0) cfg.rc_max_quantizer = 52;
   cfg.rc_undershoot_pct = 50;
   cfg.rc_overshoot_pct = 50;
-  cfg.rc_buf_initial_sz = 700;
+  cfg.rc_buf_initial_sz = 600;
   cfg.rc_buf_optimal_sz = 600;
   cfg.rc_buf_sz = 1000;
 
@@ -746,7 +746,7 @@
   // For generating smaller key frames, use a smaller max_intra_size_pct
   // value, like 100 or 200.
   {
-    const int max_intra_size_pct = 1500;
+    const int max_intra_size_pct = 1000;
     vpx_codec_control(&codec, VP8E_SET_MAX_INTRA_BITRATE_PCT,
                       max_intra_size_pct);
   }