shithub: libvpx

Download patch

ref: 4664b219a298387c009b393de2c2a023adfaa741
parent: 0ec5919d4202c6e99b31cf707c7125536498f1f4
author: Guillaume Martres <smarter3@gmail.com>
date: Sat Apr 5 21:07:53 EDT 2014 

vp9_ratectrl: change ARF overlays rate correction factor

ARF overlays now use the same rate correction factor as regular inter
frames, further testing would be needed to see if it makes sense to use
a completely separate rate correction factor for ARF overlays.

$ vpxenc --cpu-used=5  --fps=50/1 --target-bitrate=2000
         parkjoy.y4m -o out.webm
=> Before: 3356 kb/s
=> After: 2271 kb/s

Change-Id: I73e4defa615ba7a8a2bdb845864f4b1721cbbffe


--- a/vp9/encoder/vp9_ratectrl.c
+++ b/vp9/encoder/vp9_ratectrl.c
@@ -272,6 +272,7 @@
     return cpi->rc.key_frame_rate_correction_factor;
   } else {
     if ((cpi->refresh_alt_ref_frame || cpi->refresh_golden_frame) &&
+        !cpi->rc.is_src_frame_alt_ref &&
         !(cpi->use_svc && cpi->oxcf.end_usage == USAGE_STREAM_FROM_SERVER))
       return cpi->rc.gf_rate_correction_factor;
     else
@@ -284,6 +285,7 @@
     cpi->rc.key_frame_rate_correction_factor = factor;
   } else {
     if ((cpi->refresh_alt_ref_frame || cpi->refresh_golden_frame) &&
+        !cpi->rc.is_src_frame_alt_ref &&
         !(cpi->use_svc && cpi->oxcf.end_usage == USAGE_STREAM_FROM_SERVER))
       cpi->rc.gf_rate_correction_factor = factor;
     else
-- 
⑨