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| author | paulwilkins <paulwilkins@google.com> | 2015-03-23 15:57:09 +0000 |
|---|---|---|
| committer | paulwilkins <paulwilkins@google.com> | 2015-03-23 15:57:09 +0000 |
| commit | 691ec45b4e1e6786c611dd11758ae6d5d4b724db (patch) | |
| tree | def7c68032a147ca4aa63f50e7f4390774dbcc6a /vp9/encoder | |
| parent | 9a1ce7be7d4a3056b9da1df64cb7d5115a513dd9 (diff) | |
| download | libvpx-691ec45b4e1e6786c611dd11758ae6d5d4b724db.tar libvpx-691ec45b4e1e6786c611dd11758ae6d5d4b724db.tar.gz libvpx-691ec45b4e1e6786c611dd11758ae6d5d4b724db.tar.bz2 libvpx-691ec45b4e1e6786c611dd11758ae6d5d4b724db.zip | |
Enable group adaptive max q by default.
Set the GF group adaptive max Q compile flag to 1 by default.
This change has a quite big visual impact in some clips and also
contributes to tighter rate control.
For short test clips that have consistent content the impact is
quite small on metrics but for more varied long form clips there is
a drop in overal psnr but a sharp rise in average psnr caused by
greater expenditure on some easier sections and tighter rate clipping
in hard sections.
In chunck'ed encodes some of the effect will already be present due
to the independent rate control in each chunk but this change takes
the control down to a smaller scale.
yt hd +10.67%, - 3.77%, -1.56%
yt +9.654%, - 3.6%, - 1.82%
std hd +0.25%, -0.85%, -0.42%
derf +0.25%, - 1.1%. - 0.87%
Change-Id: Ibbc39b800d99d053939f4c6712d715124082843e
Diffstat (limited to 'vp9/encoder')
| -rw-r--r-- | vp9/encoder/vp9_firstpass.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/vp9/encoder/vp9_firstpass.c b/vp9/encoder/vp9_firstpass.c index 3f28e0ff3..88580c147 100644 --- a/vp9/encoder/vp9_firstpass.c +++ b/vp9/encoder/vp9_firstpass.c @@ -38,7 +38,7 @@ #define OUTPUT_FPF 0 #define ARF_STATS_OUTPUT 0 -#define GROUP_ADAPTIVE_MAXQ 0 +#define GROUP_ADAPTIVE_MAXQ 1 #define BOOST_BREAKOUT 12.5 #define BOOST_FACTOR 12.5 |