Under a configuration change, where the bitrate suddenly decreases,
the buffer level may be larger than maximum allowed (for that first frame to be encoded after change_config).
This change keeps it clipped to its maximum level.
Change-Id: I4d0b5b3d1fd8148600dd39e02bd630c9464baba5
1. Made speed choices to be progressive
2. Adjusted rt speed settings to achieve better speed/quality
Overall, rt-5 gained 2.5% in compression/quality, encoding time of 720p
niklas clip goes from 137,052ms to 121,874ms
Change-Id: Ia6e7e1e15225395a868a2f1059c3db8e266e1600
Some cleanups on frames_to_key, frames_since_key.
Also removes the unused fixed_q parameters in vp9.
Change-Id: If8743a32c71de30a8d17136477b53d607a7acda8
The feature undergoes prior assumption that the recursive partition
size search from 4x4 to 64x64, hence utilizing information from small
blocks to determine early termination in large block rate-distortion
optimization search. The current codebase is now going from top down.
The previous function might go with not properly initialized values,
hence removed.
Tested on pedestrian_area_1080p at 4000 kbps running under speed 2.
No visible difference in runtime observed.
Change-Id: I553df415c6191413762db7ae34e8790c71d8118e
This patch sets frame types correctly in the new
vp9_get_second_pass_params() function called prior
to encode_frame_to_data_rate() function, so that the
latter function can just work with what is passed to
it. This will allow multiple vp9_get_second_pass_params()
to be created for various encode strategies without
messing with the core encode function.
There is no difference in derf and yt. stdhd/hd are pending.
Change-Id: I70dfb97e9f497e9cee04052e0e8e0c2892eab0c3
Adding RefBuffer to simplify reference buffer management. The struct has a
pointer to image data and scale factors relative to the current frame.
Change-Id: If38eb1491ff687cc11428aee339f3e052e2c5d9e
Moving back to scale_factors struct. We don't need anymore x_offset_q4 and
y_offset_q4 because both values are calculated locally inside vp9_scale_mv
function.
Change-Id: I78a2122ba253c428a14558bda0e78ece738d2b5b
Various cleanups and streamlining of interfaces as precursor
to further advancements in rate control.
Pre-encode parameter setting for different use cases:
One-pass, first of 2-pass, second of 2-pass, and Svc
are separated out.
There is no change in output with this change.
Change-Id: Ied8ca7d84d610993776aa30ef263fe20452e0e3e
lf deltas are later setup in function vp9_setup_past_independence(),
so this commit removed the redundant copy. Also renamed a function
to better align the behavior of the funciton.
Change-Id: I5d28c2f5b12b3d31817e14296ed4605c1fd5c98c
Various cleanups and refactoring.
Removes feedback of active worst qaulity and uses last_q
instead to make the interface cleaner. Active worst quality
is now decided only once for a frame being coded in the
beginning based on last_q and other stats. Also, adds other
cleaups on last_q to store also the last_q for altref frames,
and reduces the altref interval a little.
The output does change a little.
derfraw300: +0.224% (global psnr)
stdhdraw250: +0.442% (global psnr)
Change-Id: Ie634cdc032697044c472dd0fe79c109b3e7f9767
Increased threshold(t) for interp filter search. This sped up the
encoder with some PSNR loss.
Borg tests were ran at speed 2.
t = 100, PSNR loss:
-0.710%(derf); -0.561%(stdhd); -0.647%(youtube)
speedup:
9%(derf); 3%(stdhd); 5.7%(youtube)
t = 500, PSNR loss:
-1.687%(derf); -1.665%(stdhd); -1.664%(youtube)
speedup:
18%(derf); 10%(stdhd); 8%(youtube)
Change-Id: I180e3657c1e156aaa88dc7c437f8bcbd19f5caba
This commit enables an adaptive prediction filter type selection
for sub8x8 block sizes. In speed 1, it re-uses the filter type of
collocated 8x8 block if it is tested in the rate-distortion optimization
loop, for the sub8x8 blocks. Otherwise, it runs the normal test
over all the three filter types. In speed 2, it re-uses the 8x8
block's prediction filter type, if available. Otherwise, force it
to be EIGHTTAP.
Compression and speed performance wise:
speed 1
derf -0.266%
yt -0.138%
bus at 2000 kbps: 33766ms -> 30451ms (10% speed-up)
football at 600 kbps: 48173ms -> 43786ms (9% speed-up)
speed 2
derf -0.026%
yt +0.134%
bus at 2000 kbps: 18973ms -> 17698ms (6% speed-up)
football at 600 kbps: 26748ms -> 25096ms (6% speed-up)
Change-Id: I77e097533b969fd3472147225fa79fc98095d342
Marco Paniconi
Deb Mukherjee
Yaowu Xu
Dmitry Kovalev
Jingning Han
Yunqing Wang
Frank Galligan