mirror of
https://github.com/godotengine/godot.git
synced 2024-12-21 10:25:24 +08:00
655 lines
26 KiB
Plaintext
655 lines
26 KiB
Plaintext
2016-07-20 v1.6.0 "Khaki Campbell Duck"
|
|
This release improves upon the VP9 encoder and speeds up the encoding and
|
|
decoding processes.
|
|
|
|
- Upgrading:
|
|
This release is ABI incompatible with 1.5.0 due to a new 'color_range' enum
|
|
in vpx_image and some minor changes to the VP8_COMP structure.
|
|
|
|
The default key frame interval for VP9 has changed from 128 to 9999.
|
|
|
|
- Enhancement:
|
|
A core focus has been performance for low end Intel processors. SSSE3
|
|
instructions such as 'pshufb' have been avoided and instructions have been
|
|
reordered to better accommodate the more constrained pipelines.
|
|
|
|
As a result, devices based on Celeron processors have seen substantial
|
|
decoding improvements. From Indian Runner Duck to Javan Whistling Duck,
|
|
decoding speed improved between 10 and 30%. Between Javan Whistling Duck
|
|
and Khaki Campbell Duck, it improved another 10 to 15%.
|
|
|
|
While Celeron benefited most, Core-i5 also improved 5% and 10% between the
|
|
respective releases.
|
|
|
|
Realtime performance for WebRTC for both speed and quality has received a
|
|
lot of attention.
|
|
|
|
- Bug Fixes:
|
|
A number of fuzzing issues, found variously by Mozilla, Chromium and others,
|
|
have been fixed and we strongly recommend updating.
|
|
|
|
2015-11-09 v1.5.0 "Javan Whistling Duck"
|
|
This release improves upon the VP9 encoder and speeds up the encoding and
|
|
decoding processes.
|
|
|
|
- Upgrading:
|
|
This release is ABI incompatible with 1.4.0. It drops deprecated VP8
|
|
controls and adds a variety of VP9 controls for testing.
|
|
|
|
The vpxenc utility now prefers VP9 by default.
|
|
|
|
- Enhancements:
|
|
Faster VP9 encoding and decoding
|
|
Smaller library size by combining functions used by VP8 and VP9
|
|
|
|
- Bug Fixes:
|
|
A variety of fuzzing issues
|
|
|
|
2015-04-03 v1.4.0 "Indian Runner Duck"
|
|
This release includes significant improvements to the VP9 codec.
|
|
|
|
- Upgrading:
|
|
This release is ABI incompatible with 1.3.0. It drops the compatibility
|
|
layer, requiring VPX_IMG_FMT_* instead of IMG_FMT_*, and adds several codec
|
|
controls for VP9.
|
|
|
|
- Enhancements:
|
|
Faster VP9 encoding and decoding
|
|
Multithreaded VP9 decoding (tile and frame-based)
|
|
Multithreaded VP9 encoding - on by default
|
|
YUV 4:2:2 and 4:4:4 support in VP9
|
|
10 and 12bit support in VP9
|
|
64bit ARM support by replacing ARM assembly with intrinsics
|
|
|
|
- Bug Fixes:
|
|
Fixes a VP9 bitstream issue in Profile 1. This only affected non-YUV 4:2:0
|
|
files.
|
|
|
|
- Known Issues:
|
|
Frame Parallel decoding fails for segmented and non-420 files.
|
|
|
|
2013-11-15 v1.3.0 "Forest"
|
|
This release introduces the VP9 codec in a backward-compatible way.
|
|
All existing users of VP8 can continue to use the library without
|
|
modification. However, some VP8 options do not map to VP9 in the same manner.
|
|
|
|
The VP9 encoder in this release is not feature complete. Users interested in
|
|
the encoder are advised to use the git master branch and discuss issues on
|
|
libvpx mailing lists.
|
|
|
|
- Upgrading:
|
|
This release is ABI and API compatible with Duclair (v1.0.0). Users
|
|
of older releases should refer to the Upgrading notes in this document
|
|
for that release.
|
|
|
|
- Enhancements:
|
|
Get rid of bashisms in the main build scripts
|
|
Added usage info on command line options
|
|
Add lossless compression mode
|
|
Dll build of libvpx
|
|
Add additional Mac OS X targets: 10.7, 10.8 and 10.9 (darwin11-13)
|
|
Add option to disable documentation
|
|
configure: add --enable-external-build support
|
|
make: support V=1 as short form of verbose=yes
|
|
configure: support mingw-w64
|
|
configure: support hardfloat armv7 CHOSTS
|
|
configure: add support for android x86
|
|
Add estimated completion time to vpxenc
|
|
Don't exit on decode errors in vpxenc
|
|
vpxenc: support scaling prior to encoding
|
|
vpxdec: support scaling output
|
|
vpxenc: improve progress indicators with --skip
|
|
msvs: Don't link to winmm.lib
|
|
Add a new script for producing vcxproj files
|
|
Produce Visual Studio 10 and 11 project files
|
|
Produce Windows Phone project files
|
|
msvs-build: use msbuild for vs >= 2005
|
|
configure: default configure log to config.log
|
|
Add encoding option --static-thresh
|
|
|
|
- Speed:
|
|
Miscellaneous speed optimizations for VP8 and VP9.
|
|
|
|
- Quality:
|
|
In general, quality is consistent with the Eider release.
|
|
|
|
- Bug Fixes:
|
|
This release represents approximately a year of engineering effort,
|
|
and contains multiple bug fixes. Please refer to git history for details.
|
|
|
|
|
|
2012-12-21 v1.2.0
|
|
This release acts as a checkpoint for a large amount of internal refactoring
|
|
and testing. It also contains a number of small bugfixes, so all users are
|
|
encouraged to upgrade.
|
|
|
|
- Upgrading:
|
|
This release is ABI and API compatible with Duclair (v1.0.0). Users
|
|
of older releases should refer to the Upgrading notes in this
|
|
document for that release.
|
|
|
|
- Enhancements:
|
|
VP8 optimizations for MIPS dspr2
|
|
vpxenc: add -quiet option
|
|
|
|
- Speed:
|
|
Encoder and decoder speed is consistent with the Eider release.
|
|
|
|
- Quality:
|
|
In general, quality is consistent with the Eider release.
|
|
|
|
Minor tweaks to ARNR filtering
|
|
Minor improvements to real time encoding with multiple temporal layers
|
|
|
|
- Bug Fixes:
|
|
Fixes multithreaded encoder race condition in loopfilter
|
|
Fixes multi-resolution threaded encoding
|
|
Fix potential encoder dead-lock after picture resize
|
|
|
|
|
|
2012-05-09 v1.1.0 "Eider"
|
|
This introduces a number of enhancements, mostly focused on real-time
|
|
encoding. In addition, it fixes a decoder bug (first introduced in
|
|
Duclair) so all users of that release are encouraged to upgrade.
|
|
|
|
- Upgrading:
|
|
This release is ABI and API compatible with Duclair (v1.0.0). Users
|
|
of older releases should refer to the Upgrading notes in this
|
|
document for that release.
|
|
|
|
This release introduces a new temporal denoiser, controlled by the
|
|
VP8E_SET_NOISE_SENSITIVITY control. The temporal denoiser does not
|
|
currently take a strength parameter, so the control is effectively
|
|
a boolean - zero (off) or non-zero (on). For compatibility with
|
|
existing applications, the values accepted are the same as those
|
|
for the spatial denoiser (0-6). The temporal denoiser is enabled
|
|
by default, and the older spatial denoiser may be restored by
|
|
configuring with --disable-temporal-denoising. The temporal denoiser
|
|
is more computationally intensive than the spatial one.
|
|
|
|
This release removes support for a legacy, decode only API that was
|
|
supported, but deprecated, at the initial release of libvpx
|
|
(v0.9.0). This is not expected to have any impact. If you are
|
|
impacted, you can apply a reversion to commit 2bf8fb58 locally.
|
|
Please update to the latest libvpx API if you are affected.
|
|
|
|
- Enhancements:
|
|
Adds a motion compensated temporal denoiser to the encoder, which
|
|
gives higher quality than the older spatial denoiser. (See above
|
|
for notes on upgrading).
|
|
|
|
In addition, support for new compilers and platforms were added,
|
|
including:
|
|
improved support for XCode
|
|
Android x86 NDK build
|
|
OS/2 support
|
|
SunCC support
|
|
|
|
Changing resolution with vpx_codec_enc_config_set() is now
|
|
supported. Previously, reinitializing the codec was required to
|
|
change the input resolution.
|
|
|
|
The vpxenc application has initial support for producing multiple
|
|
encodes from the same input in one call. Resizing is not yet
|
|
supported, but varying other codec parameters is. Use -- to
|
|
delineate output streams. Options persist from one stream to the
|
|
next.
|
|
|
|
Also, the vpxenc application will now use a keyframe interval of
|
|
5 seconds by default. Use the --kf-max-dist option to override.
|
|
|
|
- Speed:
|
|
Decoder performance improved 2.5% versus Duclair. Encoder speed is
|
|
consistent with Duclair for most material. Two pass encoding of
|
|
slideshow-like material will see significant improvements.
|
|
|
|
Large realtime encoding speed gains at a small quality expense are
|
|
possible by configuring the on-the-fly bitpacking experiment with
|
|
--enable-onthefly-bitpacking. Realtime encoder can be up to 13%
|
|
faster (ARM) depending on the number of threads and bitrate
|
|
settings. This technique sees constant gain over the 5-16 speed
|
|
range. For VC style input the loss seen is up to 0.2dB. See commit
|
|
52cf4dca for further details.
|
|
|
|
- Quality:
|
|
On the whole, quality is consistent with the Duclair release. Some
|
|
tweaks:
|
|
|
|
Reduced blockiness in easy sections by applying a penalty to
|
|
intra modes.
|
|
|
|
Improved quality of static sections (like slideshows) with
|
|
two pass encoding.
|
|
|
|
Improved keyframe sizing with multiple temporal layers
|
|
|
|
- Bug Fixes:
|
|
Corrected alt-ref contribution to frame rate for visible updates
|
|
to the alt-ref buffer. This affected applications making manual
|
|
usage of the frame reference flags, or temporal layers.
|
|
|
|
Additional constraints were added to disable multi-frame quality
|
|
enhancement (MFQE) in sections of the frame where there is motion.
|
|
(#392)
|
|
|
|
Fixed corruption issues when vpx_codec_enc_config_set() was called
|
|
with spatial resampling enabled.
|
|
|
|
Fixed a decoder error introduced in Duclair where the segmentation
|
|
map was not being reinitialized on keyframes (#378)
|
|
|
|
|
|
2012-01-27 v1.0.0 "Duclair"
|
|
Our fourth named release, focused on performance and features related to
|
|
real-time encoding. It also fixes a decoder crash bug introduced in
|
|
v0.9.7, so all users of that release are encouraged to upgrade.
|
|
|
|
- Upgrading:
|
|
This release is ABI incompatible with prior releases of libvpx, so the
|
|
"major" version number has been bumped to 1. You must recompile your
|
|
applications against the latest version of the libvpx headers. The
|
|
API remains compatible, and this should not require code changes in most
|
|
applications.
|
|
|
|
- Enhancements:
|
|
This release introduces several substantial new features to the encoder,
|
|
of particular interest to real time streaming applications.
|
|
|
|
Temporal scalability allows the encoder to produce a stream that can
|
|
be decimated to different frame rates, with independent rate targetting
|
|
for each substream.
|
|
|
|
Multiframe quality enhancement postprocessing can make visual quality
|
|
more consistent in the presence of frames that are substantially
|
|
different quality than the surrounding frames, as in the temporal
|
|
scalability case and in some forced keyframe scenarios.
|
|
|
|
Multiple-resolution encoding support allows the encoding of the
|
|
same content at different resolutions faster than encoding them
|
|
separately.
|
|
|
|
- Speed:
|
|
Optimization targets for this release included the decoder and the real-
|
|
time modes of the encoder. Decoder speed on x86 has improved 10.5% with
|
|
this release. Encoder improvements followed a curve where speeds 1-3
|
|
improved 4.0%-1.5%, speeds 4-8 improved <1%, and speeds 9-16 improved
|
|
1.5% to 10.5%, respectively. "Best" mode speed is consistent with the
|
|
Cayuga release.
|
|
|
|
- Quality:
|
|
Encoder quality in the single stream case is consistent with the Cayuga
|
|
release.
|
|
|
|
- Bug Fixes:
|
|
This release fixes an OOB read decoder crash bug present in v0.9.7
|
|
related to the clamping of motion vectors in SPLITMV blocks. This
|
|
behavior could be triggered by corrupt input or by starting
|
|
decoding from a P-frame.
|
|
|
|
|
|
2011-08-15 v0.9.7-p1 "Cayuga" patch 1
|
|
This is an incremental bugfix release against Cayuga. All users of that
|
|
release are strongly encouraged to upgrade.
|
|
|
|
- Fix potential OOB reads (cdae03a)
|
|
|
|
An unbounded out of bounds read was discovered when the
|
|
decoder was requested to perform error concealment (new in
|
|
Cayuga) given a frame with corrupt partition sizes.
|
|
|
|
A bounded out of bounds read was discovered affecting all
|
|
versions of libvpx. Given an multipartition input frame that
|
|
is truncated between the mode/mv partition and the first
|
|
residiual paritition (in the block of partition offsets), up
|
|
to 3 extra bytes could have been read from the source buffer.
|
|
The code will not take any action regardless of the contents
|
|
of these undefined bytes, as the truncated buffer is detected
|
|
immediately following the read based on the calculated
|
|
starting position of the coefficient partition.
|
|
|
|
- Fix potential error concealment crash when the very first frame
|
|
is missing or corrupt (a609be5)
|
|
|
|
- Fix significant artifacts in error concealment (a4c2211, 99d870a)
|
|
|
|
- Revert 1-pass CBR rate control changes (e961317)
|
|
Further testing showed this change produced undesirable visual
|
|
artifacts, rolling back for now.
|
|
|
|
|
|
2011-08-02 v0.9.7 "Cayuga"
|
|
Our third named release, focused on a faster, higher quality, encoder.
|
|
|
|
- Upgrading:
|
|
This release is backwards compatible with Aylesbury (v0.9.5) and
|
|
Bali (v0.9.6). Users of older releases should refer to the Upgrading
|
|
notes in this document for that release.
|
|
|
|
- Enhancements:
|
|
Stereo 3D format support for vpxenc
|
|
Runtime detection of available processor cores.
|
|
Allow specifying --end-usage by enum name
|
|
vpxdec: test for frame corruption
|
|
vpxenc: add quantizer histogram display
|
|
vpxenc: add rate histogram display
|
|
Set VPX_FRAME_IS_DROPPABLE
|
|
update configure for ios sdk 4.3
|
|
Avoid text relocations in ARM vp8 decoder
|
|
Generate a vpx.pc file for pkg-config.
|
|
New ways of passing encoded data between encoder and decoder.
|
|
|
|
- Speed:
|
|
This release includes across-the-board speed improvements to the
|
|
encoder. On x86, these measure at approximately 11.5% in Best mode,
|
|
21.5% in Good mode (speed 0), and 22.5% in Realtime mode (speed 6).
|
|
On ARM Cortex A9 with Neon extensions, real-time encoding of video
|
|
telephony content is 35% faster than Bali on single core and 48%
|
|
faster on multi-core. On the NVidia Tegra2 platform, real time
|
|
encoding is 40% faster than Bali.
|
|
|
|
Decoder speed was not a priority for this release, but improved
|
|
approximately 8.4% on x86.
|
|
|
|
Reduce motion vector search on alt-ref frame.
|
|
Encoder loopfilter running in its own thread
|
|
Reworked loopfilter to precalculate more parameters
|
|
SSE2/SSSE3 optimizations for build_predictors_mbuv{,_s}().
|
|
Make hor UV predict ~2x faster (73 vs 132 cycles) using SSSE3.
|
|
Removed redundant checks
|
|
Reduced structure sizes
|
|
utilize preload in ARMv6 MC/LPF/Copy routines
|
|
ARM optimized quantization, dfct, variance, subtract
|
|
Increase chrow row alignment to 16 bytes.
|
|
disable trellis optimization for first pass
|
|
Write SSSE3 sub-pixel filter function
|
|
Improve SSE2 half-pixel filter funtions
|
|
Add vp8_sub_pixel_variance16x8_ssse3 function
|
|
Reduce unnecessary distortion computation
|
|
Use diamond search to replace full search
|
|
Preload reference area in sub-pixel motion search (real-time mode)
|
|
|
|
- Quality:
|
|
This release focused primarily on one-pass use cases, including
|
|
video conferencing. Low latency data rate control was significantly
|
|
improved, improving streamability over bandwidth constrained links.
|
|
Added support for error concealment, allowing frames to maintain
|
|
visual quality in the presence of substantial packet loss.
|
|
|
|
Add rc_max_intra_bitrate_pct control
|
|
Limit size of initial keyframe in one-pass.
|
|
Improve framerate adaptation
|
|
Improved 1-pass CBR rate control
|
|
Improved KF insertion after fades to still.
|
|
Improved key frame detection.
|
|
Improved activity masking (lower PSNR impact for same SSIM boost)
|
|
Improved interaction between GF and ARFs
|
|
Adding error-concealment to the decoder.
|
|
Adding support for independent partitions
|
|
Adjusted rate-distortion constants
|
|
|
|
|
|
- Bug Fixes:
|
|
Removed firstpass motion map
|
|
Fix parallel make install
|
|
Fix multithreaded encoding for 1 MB wide frame
|
|
Fixed iwalsh_neon build problems with RVDS4.1
|
|
Fix semaphore emulation, spin-wait intrinsics on Windows
|
|
Fix build with xcode4 and simplify GLOBAL.
|
|
Mark ARM asm objects as allowing a non-executable stack.
|
|
Fix vpxenc encoding incorrect webm file header on big endian
|
|
|
|
|
|
2011-03-07 v0.9.6 "Bali"
|
|
Our second named release, focused on a faster, higher quality, encoder.
|
|
|
|
- Upgrading:
|
|
This release is backwards compatible with Aylesbury (v0.9.5). Users
|
|
of older releases should refer to the Upgrading notes in this
|
|
document for that release.
|
|
|
|
- Enhancements:
|
|
vpxenc --psnr shows a summary when encode completes
|
|
--tune=ssim option to enable activity masking
|
|
improved postproc visualizations for development
|
|
updated support for Apple iOS to SDK 4.2
|
|
query decoder to determine which reference frames were updated
|
|
implemented error tracking in the decoder
|
|
fix pipe support on windows
|
|
|
|
- Speed:
|
|
Primary focus was on good quality mode, speed 0. Average improvement
|
|
on x86 about 40%, up to 100% on user-generated content at that speed.
|
|
Best quality mode speed improved 35%, and realtime speed 10-20%. This
|
|
release also saw significant improvement in realtime encoding speed
|
|
on ARM platforms.
|
|
|
|
Improved encoder threading
|
|
Dont pick encoder filter level when loopfilter is disabled.
|
|
Avoid double copying of key frames into alt and golden buffer
|
|
FDCT optimizations.
|
|
x86 sse2 temporal filter
|
|
SSSE3 version of fast quantizer
|
|
vp8_rd_pick_best_mbsegmentation code restructure
|
|
Adjusted breakout RD for SPLITMV
|
|
Changed segmentation check order
|
|
Improved rd_pick_intra4x4block
|
|
Adds armv6 optimized variance calculation
|
|
ARMv6 optimized sad16x16
|
|
ARMv6 optimized half pixel variance calculations
|
|
Full search SAD function optimization in SSE4.1
|
|
Improve MV prediction accuracy to achieve performance gain
|
|
Improve MV prediction in vp8_pick_inter_mode() for speed>3
|
|
|
|
- Quality:
|
|
Best quality mode improved PSNR 6.3%, and SSIM 6.1%. This release
|
|
also includes support for "activity masking," which greatly improves
|
|
SSIM at the expense of PSNR. For now, this feature is available with
|
|
the --tune=ssim option. Further experimentation in this area
|
|
is ongoing. This release also introduces a new rate control mode
|
|
called "CQ," which changes the allocation of bits within a clip to
|
|
the sections where they will have the most visual impact.
|
|
|
|
Tuning for the more exact quantizer.
|
|
Relax rate control for last few frames
|
|
CQ Mode
|
|
Limit key frame quantizer for forced key frames.
|
|
KF/GF Pulsing
|
|
Add simple version of activity masking.
|
|
make rdmult adaptive for intra in quantizer RDO
|
|
cap the best quantizer for 2nd order DC
|
|
change the threshold of DC check for encode breakout
|
|
|
|
- Bug Fixes:
|
|
Fix crash on Sparc Solaris.
|
|
Fix counter of fixed keyframe distance
|
|
ARNR filter pointer update bug fix
|
|
Fixed use of motion percentage in KF/GF group calc
|
|
Changed condition for using RD in Intra Mode
|
|
Fix encoder real-time only configuration.
|
|
Fix ARM encoder crash with multiple token partitions
|
|
Fixed bug first cluster timecode of webm file is wrong.
|
|
Fixed various encoder bugs with odd-sized images
|
|
vp8e_get_preview fixed when spatial resampling enabled
|
|
quantizer: fix assertion in fast quantizer path
|
|
Allocate source buffers to be multiples of 16
|
|
Fix for manual Golden frame frequency
|
|
Fix drastic undershoot in long form content
|
|
|
|
|
|
2010-10-28 v0.9.5 "Aylesbury"
|
|
Our first named release, focused on a faster decoder, and a better encoder.
|
|
|
|
- Upgrading:
|
|
This release incorporates backwards-incompatible changes to the
|
|
ivfenc and ivfdec tools. These tools are now called vpxenc and vpxdec.
|
|
|
|
vpxdec
|
|
* the -q (quiet) option has been removed, and replaced with
|
|
-v (verbose). the output is quiet by default. Use -v to see
|
|
the version number of the binary.
|
|
|
|
* The default behavior is now to write output to a single file
|
|
instead of individual frames. The -y option has been removed.
|
|
Y4M output is the default.
|
|
|
|
* For raw I420/YV12 output instead of Y4M, the --i420 or --yv12
|
|
options must be specified.
|
|
|
|
$ ivfdec -o OUTPUT INPUT
|
|
$ vpxdec --i420 -o OUTPUT INPUT
|
|
|
|
* If an output file is not specified, the default is to write
|
|
Y4M to stdout. This makes piping more natural.
|
|
|
|
$ ivfdec -y -o - INPUT | ...
|
|
$ vpxdec INPUT | ...
|
|
|
|
* The output file has additional flexibility for formatting the
|
|
filename. It supports escape characters for constructing a
|
|
filename from the width, height, and sequence number. This
|
|
replaces the -p option. To get the equivalent:
|
|
|
|
$ ivfdec -p frame INPUT
|
|
$ vpxdec --i420 -o frame-%wx%h-%4.i420 INPUT
|
|
|
|
vpxenc
|
|
* The output file must be specified with -o, rather than as the
|
|
last argument.
|
|
|
|
$ ivfenc <options> INPUT OUTPUT
|
|
$ vpxenc <options> -o OUTPUT INPUT
|
|
|
|
* The output defaults to webm. To get IVF output, use the --ivf
|
|
option.
|
|
|
|
$ ivfenc <options> INPUT OUTPUT.ivf
|
|
$ vpxenc <options> -o OUTPUT.ivf --ivf INPUT
|
|
|
|
|
|
- Enhancements:
|
|
ivfenc and ivfdec have been renamed to vpxenc, vpxdec.
|
|
vpxdec supports .webm input
|
|
vpxdec writes .y4m by default
|
|
vpxenc writes .webm output by default
|
|
vpxenc --psnr now shows the average/overall PSNR at the end
|
|
ARM platforms now support runtime cpu detection
|
|
vpxdec visualizations added for motion vectors, block modes, references
|
|
vpxdec now silent by default
|
|
vpxdec --progress shows frame-by-frame timing information
|
|
vpxenc supports the distinction between --fps and --timebase
|
|
NASM is now a supported assembler
|
|
configure: enable PIC for shared libs by default
|
|
configure: add --enable-small
|
|
configure: support for ppc32-linux-gcc
|
|
configure: support for sparc-solaris-gcc
|
|
|
|
- Bugs:
|
|
Improve handling of invalid frames
|
|
Fix valgrind errors in the NEON loop filters.
|
|
Fix loopfilter delta zero transitions
|
|
Fix valgrind errors in vp8_sixtap_predict8x4_armv6().
|
|
Build fixes for darwin-icc
|
|
|
|
- Speed:
|
|
20-40% (average 28%) improvement in libvpx decoder speed,
|
|
including:
|
|
Rewrite vp8_short_walsh4x4_sse2()
|
|
Optimizations on the loopfilters.
|
|
Miscellaneous improvements for Atom
|
|
Add 4-tap version of 2nd-pass ARMv6 MC filter.
|
|
Improved multithread utilization
|
|
Better instruction choices on x86
|
|
reorder data to use wider instructions
|
|
Update NEON wide idcts
|
|
Make block access to frame buffer sequential
|
|
Improved subset block search
|
|
Bilinear subpixel optimizations for ssse3.
|
|
Decrease memory footprint
|
|
|
|
Encoder speed improvements (percentage gain not measured):
|
|
Skip unnecessary search of identical frames
|
|
Add SSE2 subtract functions
|
|
Improve bounds checking in vp8_diamond_search_sadx4()
|
|
Added vp8_fast_quantize_b_sse2
|
|
|
|
- Quality:
|
|
Over 7% overall PSNR improvement (6.3% SSIM) in "best" quality
|
|
encoding mode, and up to 60% improvement on very noisy, still
|
|
or slow moving source video
|
|
|
|
Motion compensated temporal filter for Alt-Ref Noise Reduction
|
|
Improved use of trellis quantization on 2nd order Y blocks
|
|
Tune effect of motion on KF/GF boost in two pass
|
|
Allow coefficient optimization for good quality speed 0.
|
|
Improved control of active min quantizer for two pass.
|
|
Enable ARFs for non-lagged compress
|
|
|
|
2010-09-02 v0.9.2
|
|
- Enhancements:
|
|
Disable frame dropping by default
|
|
Improved multithreaded performance
|
|
Improved Force Key Frame Behaviour
|
|
Increased rate control buffer level precision
|
|
Fix bug in 1st pass motion compensation
|
|
ivfenc: correct fixed kf interval, --disable-kf
|
|
- Speed:
|
|
Changed above and left context data layout
|
|
Rework idct calling structure.
|
|
Removed unnecessary MB_MODE_INFO copies
|
|
x86: SSSE3 sixtap prediction
|
|
Reworked IDCT to include reconstruction (add) step
|
|
Swap alt/gold/new/last frame buffer ptrs instead of copying.
|
|
Improve SSE2 loopfilter functions
|
|
Change bitreader to use a larger window.
|
|
Avoid loopfilter reinitialization when possible
|
|
- Quality:
|
|
Normalize quantizer's zero bin and rounding factors
|
|
Add trellis quantization.
|
|
Make the quantizer exact.
|
|
Updates to ARNR filtering algorithm
|
|
Fix breakout thresh computation for golden & AltRef frames
|
|
Redo the forward 4x4 dct
|
|
Improve the accuracy of forward walsh-hadamard transform
|
|
Further adjustment of RD behaviour with Q and Zbin.
|
|
- Build System:
|
|
Allow linking of libs built with MinGW to MSVC
|
|
Fix target auto-detection on mingw32
|
|
Allow --cpu= to work for x86.
|
|
configure: pass original arguments through to make dist
|
|
Fix builds without runtime CPU detection
|
|
msvs: fix install of codec sources
|
|
msvs: Change devenv.com command line for better msys support
|
|
msvs: Add vs9 targets.
|
|
Add x86_64-linux-icc target
|
|
- Bugs:
|
|
Potential crashes on older MinGW builds
|
|
Fix two-pass framrate for Y4M input.
|
|
Fixed simple loop filter, other crashes on ARM v6
|
|
arm: fix missing dependency with --enable-shared
|
|
configure: support directories containing .o
|
|
Replace pinsrw (SSE) with MMX instructions
|
|
apple: include proper mach primatives
|
|
Fixed rate control bug with long key frame interval.
|
|
Fix DSO link errors on x86-64 when not using a version script
|
|
Fixed buffer selection for UV in AltRef filtering
|
|
|
|
|
|
2010-06-17 v0.9.1
|
|
- Enhancements:
|
|
* ivfenc/ivfdec now support YUV4MPEG2 input and pipe I/O
|
|
* Speed optimizations
|
|
- Bugfixes:
|
|
* Rate control
|
|
* Prevent out-of-bounds accesses on invalid data
|
|
- Build system updates:
|
|
* Detect toolchain to be used automatically for native builds
|
|
* Support building shared libraries
|
|
* Better autotools emulation (--prefix, --libdir, DESTDIR)
|
|
- Updated LICENSE
|
|
* http://webmproject.blogspot.com/2010/06/changes-to-webm-open-source-license.html
|
|
|
|
|
|
2010-05-18 v0.9.0
|
|
- Initial open source release. Welcome to WebM and VP8!
|
|
|