From f6a58d620da72e6753b0ec119e141a2991d4c8f3 Mon Sep 17 00:00:00 2001
From: Paul Wilkins <paulwilkins@google.com>
Date: Fri, 11 Jun 2010 15:10:51 +0100
Subject: [PATCH] Tuning of baseline Rd equation to improve behavior at the
low and high Q ends.
---
vp8/encoder/rdopt.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/vp8/encoder/rdopt.c b/vp8/encoder/rdopt.c
index a6bd8e86dc..4aedbd9255 100644
--- a/vp8/encoder/rdopt.c
+++ b/vp8/encoder/rdopt.c
@@ -237,12 +237,12 @@ void vp8_initialize_rd_consts(VP8_COMP *cpi, int Qvalue)
vp8_clear_system_state(); //__asm emms;
cpi->RDMULT = (int)( (0.0001 * (capped_q * capped_q * capped_q * capped_q))
- -(0.0125 * (capped_q * capped_q * capped_q))
+ -(0.015 * (capped_q * capped_q * capped_q))
+(3.25 * (capped_q * capped_q))
- -(12.5 * capped_q) + 50.0);
+ -(17.5 * capped_q) + 125.0);
- if (cpi->RDMULT < 50)
- cpi->RDMULT = 50;
+ if (cpi->RDMULT < 125)
+ cpi->RDMULT = 125;
if (cpi->pass == 2 && (cpi->common.frame_type != KEY_FRAME))
{
--
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