From d6f4b71d9f895dd77624022cbe0fbbc40dbdf03f Mon Sep 17 00:00:00 2001
From: Yaowu Xu <yaowu@google.com>
Date: Wed, 4 Apr 2012 07:24:10 -0700
Subject: [PATCH] Adjust the key frame placement condition
The commit removed a limit on key frame detection, which caused a big
drop in all metric measurements for standard HD clip such as _mobcal.
This single change helps two standard HD clips by a huge amount, which
help the overall std-hd set by 2.4% (glb psnr), 0.9% (avg_psnr), 2.1%
(vpxssim).
In the result page:
http://pafr9.prod.google.com:26163/?/cns/rc-d/home/on2-prod/sunkaras/borg-test/yaowu
2012_04_02_1649_yaowu_bugfix_std-hd
2012_04_03_1452_yaowu_hump_std-hd
represent the encoding test results and std-hd set prior and after this
commit respectively.
Change-Id: Ie4313e317c737ea0e699c3a7919c1376744baa1a
---
vp8/encoder/firstpass.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/vp8/encoder/firstpass.c b/vp8/encoder/firstpass.c
index 1e8594d7b4..5212007d8b 100644
--- a/vp8/encoder/firstpass.c
+++ b/vp8/encoder/firstpass.c
@@ -2648,8 +2648,7 @@ static void find_next_key_frame(VP8_COMP *cpi, FIRSTPASS_STATS *this_frame)
&& lookup_next_frame_stats(cpi, &next_frame) != EOF)
{
// Normal scene cut check
- if ( ( i >= MIN_GF_INTERVAL ) &&
- test_candidate_kf(cpi, &last_frame, this_frame, &next_frame) )
+ if ( test_candidate_kf(cpi, &last_frame, this_frame, &next_frame) )
{
break;
}
--
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