Up-sampled the reference frames to 8 times in each dimension using
the 8-tap interpolation filter. In sub-pixel motion search, use the
up-sampled reference frames to find the best matching blocks. This
largely improved the motion search precision, and thus, improved
the compression quality. There was no change in decoder side.
Borg test and speed test results:
1. On derflr set,
Overall PSNR gain: 1.306%, and SSIM gain: 1.512%.
Average speed loss on derf set was 6.0%.
2. On stdhd set,
Overall PSNR gain: 0.754%, and SSIM gain: 0.814%.
On hevchd set,
Overall PSNR gain: 0.465%, and SSIM gain: 0.527%.
Speed loss on HD clips was 3.5%.
Change-Id: I300ebaafff57e88914f3dedc8784cb21d316b04f
obmc: We add an obmc prediction mode at superblock level.
When it is enabled, predictors of the above and left blocks
are used to refine the regular block-based motion compensation.
Change-Id: I6310104ea3dfece16d736351e368861471dd1c9b
Temporaly disable warning for unused function for vp10, needs clean
out the warnings before re-enable the flag for vp10.
Change-Id: I5636f8cd607423f6ea6963db9c2cbd688e30b495
when INLINE is defined and mips is not being targeted. otherwise keep
the old --enable-extra-warnings behavior
Change-Id: Iba576edbe5fca03efa56ce99eee11f9cafc573ad
ext-partition: to hold partition extensions (ex. ext-partition,
ext-coding-unit-size from nextgen)
loop-restore: to hold in-loop restoration filter (ex. loop-postfilter
from nextgen and other Wiener restoration filters)
Change-Id: I71c7f1588f05fb0f2b00f7004a78e90c9cceae3f
The nominal tx_type for a given mode is used as a context
to encode the actual tx_type for intra.
Results:
derflr: -0.241% BDRATE
hevcmr: -0.366% BDRATE
Change-Id: Icfe7b0a58d79bc6497a06e3441779afec6e01e21
This commit adds a new configure option:
--enable-better-hw-compatibility
The purpose of the configure option is to provide information on known
hardware decoder implementation bugs, so encoder implementers may
choose to implement their encoders in a way to avoid triggering these
decoder bugs.
The WebM team were made aware of that a number of hardware decoders
have trouble in handling the combination of scaled frame reference
frame and 8x4 or 4x8 partitions. This commit added asserts to vp9
decoder, so when built with above configure option, the decoder can
assert if an input bitstream triggers such decoder bug.
Change-Id: I386204cfa80ed16b50ebde57f886121ed76200bf
--disable-XXX has the effect of disabling all extensions above it, e.g.,
--disable-ssse3 disables ssse3-avx2.
Change-Id: If02b44ca71ee12e4acb12010db8593a7989f2a9d
Change-Id: I38952cd55b91f35e5db45bc8e6a20ef25069c464
--ext-refs: extended references - for multi-ref in nextgen
--ext-inter: extended inter - for new_inter/copy_mode in nextgen
--ext-interp: for new interpolation
This commit fixes the merge conflicts between master and nextgenv2 and
disable early termination in choose_tx_size() to avoid failure in test.
The test failures are pre-existing, some of the issue were fixed in
masterbase already, so will have another merge to introduce the fixes.
Change-Id: Ib71889661955e73aedbb4db49d8be70425281dcb
This experiment allows using full above/right edges for all transform
sizes whenever available (for d45/d63), and adds bottom/left edges for
d207.
See issue 1043.
Change-Id: I5cf7f345e783e8539bb6b6d2c9972fb1d6d0a78b
This change (in a new config experiment: universal_hp) removes the
bitstream parsing dependency of the HP MV bit on the ref MV to be
coded. It also cleans up clearing of the HP bit in near/nearestMV,
since HP is always on if it's set in the frame header.
This admittedly doesn't clean up the crap that could be cleaned up,
but that's mostly because I think this needs some careful review;
not so much for coding style, but more from hardware people and from
the codec team on what we/you want. It would also be nice to get some
actual numbers on the real quality impact of this change. If, for
example, hardware people come up and tell us they don't actually care
anymore, we should probably just this code as-is and do nothing (i.e.
discard this patch).
See issue 1036.
Change-Id: Ic9b106f34422aa0f79de0c28125b72d566bd511a
This commit re-designs the bitstream syntax to support recursive
transform block partition. The initial stage targets the inter
prediction residuals.
Change-Id: I556ab3c68c198387a2fd2d02e2b475e83cd417c3
Resolved Conflicts in the following files:
configure
vp10/common/idct.c
vp10/encoder/dct.c
vp10/encoder/encodemb.c
vp10/encoder/rdopt.c
Change-Id: I4cb3986b0b80de65c722ca29d53a0a57f5a94316
previously any flags added while setting up the toolchain would
override the user selections; environment variables could be treated
similarly
Change-Id: Ibfcc644137d8e579af554d19a38d4020019a7a34
derflr +0.202%
hevclf +0.207%
hevcmr +0.095%
hevchr +0.077%
Tested locally on several derf sequences, speed (encoder + decoder)
is slower by less than 1%.
It is part of the EXT_TX experiment, which is to be continued to
explore different transform variants.
Change-Id: I05d44994a62106538a9a241ed8d89bd7c5d14761
requires r10e or newer:
Android NDK, Revision 10e (May 2015)
...
Other bug fixes:
...
- Fixed .asm support for ABI x86_64.
Change-Id: I51ec9a5f77c982b7412d922e896348a83ae2d7d6
These targets no longer build (PPC support was removed from
libvpx). Remove the dead code and misleading help output.
BUG=https://code.google.com/p/webm/issues/detail?id=997
Change-Id: Ib35614806adeae970f3821da0d8dbcc54ab8d868
