Skip flag is removed from the bitstream for all blocks coded in intra
mode. Very minor coding gain in derf and stdhd sets (0.048 and 0.1)
Change-Id: I79f03300f16d6fa84ce54405cafecab8a021cd7d
This commit allows the decoder to decode selective tiles according
to decoder configuration settings. To decode a single tile out of
the provided key frame bit-stream (test_kf.webm), set compiler
configuration:
--enable-experimental --enable-row-tile --enable-key-frame-tile
use the command:
vpxdec -o test_dec.y4m test_kf.webm --tile-row=1 --tile-column=2
where the tile's row and column indexes are 1 and 2, respectively.
To decode all row tiles inside a provided column index, use:
--tile-row=-1 --tile-column=2
To decode all column tiles inside a provided row index, use:
--tile-row=2 --tile-column=-1
Change-Id: Ib73c266414dcee7eaab5d741b90d0058970dae56
With this patch, the ZEROMV mode is overloaded to represent
a single global dominant motion using one of three models:
1. True zero translation motion (as before)
2. A translation motion different from 0
3. A Rotation-zoom affine model where the predictor is warped
The actual model used is indicated at the frame level for
each reference frame.
A metric that computes the ratio of the error with a global
non-zero model to the error for zero motion, is used to
determine on the encoder side whether to use one of the two
non-zero models or not.
Change-Id: I1f3d235b8860e543191237024a89041ff3aad689
This commit makes the bit-stream syntax support fast selective tile
decoding in a large scale tile array. It reduces the computational
complexity of computing the target tile offset in the bit-stream
from quadratic to linear scale, while maintaining relatively small
stack space requirement (in the order of 1024 bytes instead of 1M
bytes). The overhead cost due to tile separation remains identical.
Change-Id: Id60c6915733d33a627f49e167c57d2534e70aa96
This commit allows the encoder to process tile coding per 64x64
block. The supported upper limit of tile resolution is the minimum
of frame size and 4096 in each dimension. To turn on, set
--experiment --row-tile
and compile.
It overwrite the old --tile-columns and --tile-rows configurations.
These two parameters now tell the encoder the width and height of
tile in the unit of 64x64 block. For example,
--tile-columns=1 --tile-rows=1
will make a tile contains a single 64x64 block.
Change-Id: Id515749a05cfeb9e9d008291b76bdfb720de0948
This commit allows the internal codec handle arbitrary tile size
in the unit of 64x64 pixel blocks.
Change-Id: I3ad24de392064645bebab887c94e1db957794916
Move the 2D tile info arrays as global variables. This resolves
the local function stack overflow issue due to excessively large
tile info variables. This allows the internal operation to support
up to 1024 row and column tiles.
Change-Id: I6644cc929e5d3a778a5c03a712ebfc0b8729f576
This commit allows the codec to use up to row tiles (optionally
in combination with up to 64 column tiles per row tile). The
minimum tile size is set to be 256x256 pixel block.
Change-Id: I811ca93f0c5eba41e190f6c7c0f064d1083f530f
Runborgs results on derflr show consistent results between NEW_INTER
and the previous combination of NEWMVREF and COMPOUND_MODES.
Change-Id: Ieba239c4faa7f93bc5c05ad656a7a3b818b4fbfc
Test VP9/EndToEndTestLarge.EndtoEndPSNRTest/1 (422 stream) failed when
supertx enabled. This was because 4x8 and 8x4 blocks were not being
split into 4x4s during tokenization in the encoder. This patch
uses vp9_foreach_transformed_block() to fix this.
Change-Id: I1f1cb27474eb9e04347067f5c4aff1942bbea8d9
Besides code cleaning, this patch contains 3 fixes:
(1) Fixed the COMPOUND_MODES for the NEW_NEWMV mode;
(2) Fixed the joint search when the NEAR_FORNEWMV mode (in NEWMVREF)
is being evaluated;
(3) Fixed the WEDGE_PARTITION when the NEAR_FORNEWMV mode (in NEWMVREF)
is being evaluated.
(4) Adjusted the entropy probability value for NEAR_FORNEW mode.
On derflr turning on all 14 experiments (except for global-motion), the
average gain w.r.t. PSNR is +0.07%:
Maximum on bridge_far_cif: +1.02%
Minimum on hallmonitor_cif: -0.16%
Change-Id: I4c9c6ee24a981af7e655a629580641d9f9745f91
Use separate token probabilities and counters for non-transform
blocks (pixel domain) . Initial probabilities are trained with screen_content
clips. On screen_content, it improves coding performance by about
2% (from +16.4% to +18.45%).
The initial probabilities are not optimized for natural videos. So it should
not be used for natural videos. Set FOR_SCREEN_CONTENT as 0/1 to specify
whether or not to enable this patch.
Change-Id: Ifa361c94bb62aa4b783cbfa50de08c3fecae0984
