This patch modified the motion search counts used in:
https://chromium-review.googlesource.com/#/c/305640/
These 2 counts were originally added as thread data, and used to
make decisions in motion search. The tile encoding order can be
inconsistent while using different number of threads, which can
cause bitstream mismatch. Here moved them to tile data to solve
the issue.
BUG=webm:1322
Change-Id: Iedc4477aef1746aa0a4f84d88a1156296fd3ba87
Re-use the tile worker threads to pack the bitstream in parallel
on a per-tile basis. Restricting this to real-time only for now
(further testing is needed to ensure this does not make 2-pass
worse in any case).
BUG=webm:1309
Change-Id: I8a80da7c5089b837d0df79a5c49d5e3022dfc8ec
This reverts commit 9e8efa5b189a5abf78b1bcbc8076893728129d1e.
this change causes ubsan warnings, failures in
vpxenc_vp9_webm_rt_multithread_tiled
BUG=webm:1309
Change-Id: I020c7be985c771bfff4b3de1afe51cc8edb980da
Re-use the tile worker threads to pack the bitstream in parallel
on a per-tile basis. Restricting this to real-time only for now
(further testing is needed to ensure this does not make 2-pass
worse in any case).
BUG=webm:1309
Change-Id: Ia2c982da56697756e12f02643f589189b3271d98
For 1 pass vbr real-time mode:
Allow for the usage of alt-ref frame when non-zero lag-in-frames is used.
Use non-filtered alt-ref, and select usage based on fast scene/content
analysis/detection within the lag of frames.
Positive gains on ytlive set: overall avgPSNR ~3-4%.
Several clips are up between 5-14%, a few clips are neutral/small change.
Current speed decrease is about ~5-10%.
Use the flag USE_ALTREF_FOR_ONE_PASS to enable this feature
(off by default for now).
Change-Id: I802d2bf3d44f9cf01f6d15c76be9c90192314769
change_config() may be called often in real-time application,
to update bitrate/framerate or qp-max/min.
No need to do update_frame_size() unless frame size has changed.
Change-Id: I23a51deade1e03adc91c468f9ffde3235298770c
This patch is to address concerns that changes to allow
recodes on the first frame in each ARF group do not give a
good enough speed quality trade off for speed 2. Though the
average impact on encode speed is 1-2%, for some hard clips
it is > 5% rise. For speed 1 this is less an issue and for Speed 0
the previous patch actually improves speed.
Change-Id: Ie1bcefdbfdf846d3f4428590173f621465dffe3a
This corrects a formatting error introduced in:
I1e9d548ce445d29002f0c59ebfd3957a6f15e702
where spaces were used as delimiters instead of tabs.
The corresponding fix for vp10 is in
Ica3d625d6672b3c47e0e208b45eede29b9004030.
Change-Id: Ibc4eb8fd82e6b926ba259a679dc98557cadba9b1
Current commit is just an API template for the rest of the code, and
I will add inner logic later.
Altref frames generate a lot of bitrate and at the same time
other frames refer to them a lot, so it makes sense to apply
special compensation-based adaptive quantization scheme for altref
frames. E.g., for blocks that are good predictors for the future
apply rate-control chosen quantizer while for bad predictors apply
worse one.
Change-Id: Iba3f8ec349470673b7249f6a125f6859336a47c8
Allow recodes for the first inter frame in each arf group
even when the recode rule is set to ALLOW_RECODE_KFARFGF.
Small gains of 0.05%.
Change-Id: I40cb559d36a2bf0ebf5cf758c3f92e452b480577
This commit changes the call in vp9 encoder from vp9_deblock() to
vp9_post_proc_frame() to ensure the data structures used in the call
are properly allocated. This fixes an encoder crash when configured
with --enable-internal-stats.
Change-Id: I2393b336c0f566665336df4f1ba91c405eb56764
Allow usage of lookahead for VBR in real-time mode, for 1 pass vbr.
Current usage is for fast checking of future scene cuts/changes,
and adjusting rate control (gf interval and active_worst/target size).
Added unittests (datarate) for 1 pass vbr mode, with non-zero lag.
Added an experimental option to limit QP based on lookahead.
Overall positive gain in metrics on ytlive set:
avgPNSR/SSIM up on average ~1-3%; several clips up by 5, 7%.
Change-Id: I960d57dfc89de121c4824b9a9bf88d2814e74b56
This change eliminates redundant computation in the two stage
downscaling, which saves ~1% encoding time in 3-layer svc encoding.
Change-Id: Ib4b218811b68499a740af1f9b7b5a5445e28d671
For forced key frames in particular this helps to make them
blend better with the surrounding frames where noise tends
to be suppressed by a combination of quantization and alt
ref filtering.
Currently disabled by default under and IFDEF flag pending
wider testing.
Change-Id: I971b5cc2b2a4b9e1f11fe06c67ef073f01b25056
Added actual and absolute rate miss values to the opsnr.stt
stats output line.
Changes to the borg graphing may be needed before merge.
Change-Id: I1e9d548ce445d29002f0c59ebfd3957a6f15e702
Add control API VP9E_SET_TARGET_LEVEL that allows the encoder to
control the output bitstream level and/or keep level related
statistics.
Usage:
255 do not care about level (default)
0 keep level related stats only
10 target for level 1
11 target for level 1.1
.
.
.
62 target for level 6.2
Usage for vpxenc:
--target-level=0/255/10/11...
Change-Id: I31d1aeca19358b893e7577b4e63748c8e614034a
In Aq mode 1 the segment and AQ delta for each block is based
on spatial variance. There may be a net imbalance between blocks
that have lower Q than the baseline value and those that have higher Q.
This patch monitors that imbalance and extends the allowed baseline
Q range for the frame to accommodate adjustment of that baseline value
to compensate.
Change-Id: Iae8a48c7c01fe2af94a141e149d03acf467237ca
So it can be used even with aq-mode=3 not enabled.
Also cleans up some code in the places where its used.
No change in behavior.
Change-Id: Ib6b265308dbd483f691200da9a0be4da4b380dbc
Change recursive weight for average_source_sad and
put some constraint on spacing between detected scene-cuts.
Change only affects 1 pass real-time mode.
Change-Id: I1917e748d845e244812d11aec2a9d755372ec182
Avoid copy-block when denoising is at LowLow level (i.e., no denoising is done).
Instead, don't enter denoiser at all, and when level goes back up over kLowLow
do a reset in denoiser.
Change-Id: I0544adf58f4dd51ecc4a4607fcb0353bfbbb7a59
Adds a second threshold for recodes even on frames where
recode is normally disabled if there is a big rate miss.
Change-Id: Ifd4a34707da55ec15eb7cfb87de4644b8d76deb2
Don't advance the svc frame counters on dropped frame,
since this can break the referencing scheme and lead
to a crash/assert.
Updated svc-datarate unittest to add a lower bitrate test.
Change only affects 1 pass cbr svc, with frame dropper enabled.
Change-Id: Ibb7530b7a587a9344d46898d9286fd9e2ef0779c
Use the superframe counter to set the key frame, and force
it to the key frame on base spatial layer only.
Also, update svc frame counters under frame dropping.
Update unittest: add specific tests with short key frame period.
https://bugs.chromium.org/p/webm/issues/detail?id=1150
Change-Id: I5b1c9a09253e6e5fbfce51b4cf603ae22d422b01
For 1 pass cbr mode: allow for two-stage 1:2 scaling
(which will use the 1:2 optimized scaler) if the spatial
layer is 1/4x1/4 of souce.
Without this change, the base layer for 3 spatial layers would
be using the non-normative scaler which is un-optimized/C code.
Change-Id: I9d73f92a4a96927d0f1d6bf75315c1e60513226a
