Flipping arf on and off too often is hurting some clips.
This change makes no difference for 50-75% of our test
clips but helps some by a big margin. (eg. std-hd crew
by 6% and one of the YT and YT-hd clips by 14%)
Average improvements for 2 pass, speed 2 (psnr,ssim)
are as follows:-
derf 0.165%, 0.210%
yt 1.210%, 1.464%
yt-hd 1.189%, 1.471%
std-hd 1.031%, 0.886%
Change-Id: I121fe66cfb4a62d384b23b484a7d648789641969
Removes certain cases of feedback of active_worst_quality,
and removes it from the RATE_CONTROL structure. Now active
worst quality is expected to be computed locally in the
q picking function during the encode.
Making temporal filter strength depend on avg_frame_qindex
rather than on active_worst_quality actually improves
performance esp. for yt.
derf: +0.038%
yt: +0.359%
Change-Id: I1fe5a343034b55af9322289165321f00ac0827b1
In real time encoding, we enable encode_breakout to make encoding
fast. A speed feature "use_encode_breakout" is defined to set
encode_breakout thresholds for different speeds.
However, currently, static_thresh is an encoder option. The encode_
breakout can be turned off if user sets static_thresh=0 specifically.
The rtc set borg test result: (need to set --static_thresh=1)
speed -5, psnr loss -3.543%;
speed -4, psnr loss -2.358%;
speed -3, psnr loss -0.771%.
Encoding speed test:
speed -5, 11% - 60% speedup;
speed -4, 5.5% - 28% speedup;
speed -3, 0.8% - 7% speedup.
Change-Id: Icde592ffbe77eac7446f872a2e9eb2051733677b
Some parameter changes and fixes on one-pass rate control.
derfraw300 is now only 10% below 2-pass speed 0 rate control.
Change-Id: I1940eef8a5a035dc18e71b880d5e00cabd1f01b9
Inlcudes a number cleanups:
1. Moves the one-pass pre-encode parameter setting functions
to vp9_ratectrl.c
2. Deprecates per_frame_bandwidth in RATE_CONTROL structure
3. Removes target_bandwidth in cpi structure since it is not used.
4. Various renaming of functions
There is no bit-stream change in 2-pass, one-pass cbr and one-pass
vbr modes.
Change-Id: Ifd9916bf4d485b7d04c5f52044ffe6703254ccbd
Fixes rate control partially in one-pass non-cbr case to achieve a
bitrate close to the one desired. Previous version was way off at
the high bitrate end.
Also includes several one-pass rate control cleanups and refactoring.
On derfraw300, one-pass encoding is now 19% off from two-pass speed
0 encoding, down from 35%.
Change-Id: I6f0dcdb7f8aa85a7e7cd3a3155d4f9d2a4d2f4f4
Added a constant to represent the minimum KF boost
rather than using the magic number 2000 in the code.
Change-Id: I9428b61f47d26312caff81c6f9ae8587df004791
Includes a few fixes and clean-ups that adds the ability
to use alt-ref frames in one-pass mode.
Whether alt-refs are actually used or not is controlled by a
macro USE_ALTREF_FOR_ONE_PASS in vp9_firstpass.c.
This first cut seems to improve derf by 15+% in 1-pass mode.
But further experiments with parameters are underway.
Change-Id: I78254421435478003367c788c7930d2dc4ee2816
The sum of squared mv components can go beyond int range for large
input resolution. This commit changed the type to int64 to avoid
overflow.
Change-Id: Ib21ea2817845cea1435f893064e6417c79c5bc64
