AOM AV1 Encoder Sees Big Boost With Additional AVX2 Optimization (Phoronix)

Dav1d 0.8.0 “Eurasian hobby”:

0.8.0 is a major update for dav1d:

• Improve the performance by using a picture buffer pool; The improvements can reach 10% on some cases on Windows.
• Support for Apple ARM Silicon
• ARM32 optimizations for 8bit bitdepth for ipred paeth, smooth, cfl
• ARM32 optimizations for 10/12/16bit bitdepth for mc_avg/mask/w_avg, put/prep 8tap/bilin, wiener and CDEF filters
• ARM64 optimizations for cfl_ac 444 for all bitdepths
• x86 optimizations for MC 8-tap, mc_scaled in AVX2
• x86 optimizations for CDEF in SSE and {put/prep}_{8tap/bilin} in SSSE3

https://code.videolan.org/videolan/dav1 ... aster/NEWS

SVT-AV1 v0.8.6
[0.8.6] - 2020-11-28

Encoder

• Further quality-speed tradeoffs tuning for VOD use cases
• Improved TPL support within 1-pass and 2-pass CRF moode
• Continued non-optimized support for 2pass VBR and CRF
• Align kernel nomenclature to prefix svt_aom for kernels brough from libaom to avoid symbol conflicts

Build and Testing

• Bug fixes
• Improve CI
• Added CI support for gitlab
• Improve Unit Test Coverage
• Address C vs asm mismatches
• Fix static analysis warnings / errors
• Add address sanitizer
• Fix symbol conflicts with libaom and libvpx when staticly linked to ffmpeg

https://github.com/AOMediaCodec/SVT-AV1 ... tag/v0.8.6

Hirsute Hippo har fått libVPx och VPx-tools 1.9.0.

Kan installeras i 20.10 med .deb-filer (AMD64) från
https://launchpad.net/ubuntu/hirsute/am ... x6/1.9.0-1
och
https://launchpad.net/ubuntu/hirsute/am ... ls/1.9.0-1

Dav1d 0.8.1 “Eurasian hobby”:

0.8.1 is a minor update on 0.8.0:

• Keep references to buffers valid after dav1d_close(). Fixes a regression caused by the picture buffer pool added in 0.8.0.
• ARM32 optimizations for 10bit bitdepth for SGR
• ARM32 optimizations for 16bit bitdepth for blend/w_masl/emu_edge
• ARM64 optimizations for 10bit bitdepth for SGR
• x86 optimizations for wiener in SSE2/SSSE3/AVX2

https://code.videolan.org/videolan/dav1 ... aster/NEWS

Rav1e 0.4.0

Rav1e 0.4 Released For Faster Rust AV1 Encoding – But Still Is Quite Slow (Phoronix)

Rav1e 0.5.0-alpha
—————————————————————————————————————————————

Dav1d 0.8.2 ‘Eurasian hobby’:

0.8.2 is a middle-size update of the 0.8.0 branch:

• ARM32 optimizations for ipred in 10/12bits, completing most of the 10b/12b work on ARM
• Give the post-filters their own threads
• ARM64: rewrite the wiener functions
• Speed up coefficient decoding, 0.5%–3% global decoding gain
• x86: rewrite the SGR AVX2 asm
• x86: improve msac speed on SSE2+ machines
• ARM32: improve speed of ipred and warp
• ARM64: improve speed of ipred, cdef_dir, cdef_filter, warp_motion and itx16
• ARM32/64: improve speed of looprestoration
• Add seeking, pausing to the player
• Update the player for rendering of 10b/12b
• Misc speed improvements and fixes on all platforms
• Add a xxh3 muxer in the dav1d application

https://code.videolan.org/videolan/dav1 ... aster/NEWS

dav1d 0.8.2 AV1 Decoder Showing Nice Uplift On Intel, AMD CPUs (Phoronix)

SVT-AV1 har flyttat till GitLab: https://gitlab.com/AOMediaCodec/SVT-AV1

Intels VP9-kodare SVT-VP9 har uppdaterats tre gånger sedan förra gången jag skrev om den:

0.3.0: https://github.com/OpenVisualCloud/SVT- ... tag/v0.3.0
0.2.2: https://github.com/OpenVisualCloud/SVT- ... tag/v0.2.2
0.2.1: https://github.com/OpenVisualCloud/SVT- ... tag/v0.2.1

En ny LibVPx (VP8, VP9) är också på gång. 1.10.0 RC1 och RC2 har släppts:
https://chromium.googlesource.com/webm/ ... 1.10.0-rc1
https://chromium.googlesource.com/webm/ ... 1.10.0-rc2

LibAOM 3.0.0 RC1 har släppts. Den ersätter 2.1.0 RC 1, som släpptes 23 februari.

https://aomedia.googlesource.com/aom/+/ ... v3.0.0-rc1
https://aomedia.googlesource.com/aom/+/ ... v2.1.0-rc1

SVT-AV1 0.8.7 (2021-05-08)

Encoder

• Feature optimizations: creating new mode decision / encode-decode feature levels allowing better speed / quality trade-off granularity
• Preset repositioning after adopting new levels
• Preset 8 achieving similar speed levels to that of x265 medium in the VOD (shot-based encoding) use-case while maintaining quality gains
• New 1-pass and 2-pass VBR implementation ported from libaom and adapted to the SVT architecture – still a WIP
• Cleaned up old VBR and CVBR RC code along with the lookahead mechanism associated with them
• Improvements for TPL algorithm to handle long clips and easy content
• Added HDR support and color primaries SEI signaling (off by default until integrated with ffmpeg)
• Memory optimizations, cleaning up data structures to reduce memory usage up to 2× memory reduction in multi-threaded VBR environment
• Additional AVX2 and AVX512 optimizations
• Cleaned up unused command line parameters except the config params that are linked to ffmpeg
• Update user guide and documentation

https://gitlab.com/AOMediaCodec/SVT-AV1 ... ses/v0.8.7

Libaom, SVT-AV1 Mark New Open-Source AV1 Encoder Releases This Week (Phoronix)

Dav1d 0.9.0 ‘Golden Eagle’:

0.9.0 is a major version of dav1d, adding notably 10b acceleration on x64.

Details:

• x86 (64bit) AVX2 implementation of most 10b/12b functions, which should provide a large boost for high-bitdepth decoding on modern x86 computers and servers.
• ARM64 neon implementation of FilmGrain (4:2:0/4:2:2/4:4:4 8bit)
• New API to signal events happening during the decoding process

https://code.videolan.org/videolan/dav1 ... aster/NEWS

Dav1d 0.9.1 ‘Golden Eagle’:

0.9.1 is a middle-size revision of dav1d, adding notably 10b acceleration for SSSE3:

• 10/12b SSSE3 optimizations for mc (avg, w_avg, mask, w_mask, emu_edge), prep/put_bilin, prep/put_8tap, ipred (dc/h/v, paeth, smooth, pal, filter), wiener, sgr (10b), warp8x8, deblock, film_grain, cfl_ac/pred for 32bit and 64bit x86 processors
• Film grain NEON for fguv 10/12b, fgy/fguv 8b and fgy/fguv 10/12 arm32
• Fixes for filmgrain on ARM
• itx 4x4 for SSE4
• Misc improvements on SSE2, SSE4

https://code.videolan.org/videolan/dav1 ... aster/NEWS