v0.2.1

Changes

• About 30% smaller binaries (from 4.6MB to 3.2MB for stripped release Linux x86_64)
• About 14% faster build time
• About 0.5-1.5% slower on x86_64
• Better quality

Fixes

• #1930
• #1986
• #1991

v0.2.0: Winter Solstice

Improvements

• Faster, overall 40%-70% faster than v0.1.0 depending on the encoding settings.
• Optional serialization/deserialization of the encoding parameters through the feature serialize
  • Optional cli advanced commands to use it.
• The builds are now using the dwarf debug format for the targets that support it, before it was a mixture of dwarf and stabs due to the nasm defaults.
• Added a --benchmark hidden flag for the cli for MacOS and Linux.
• documentation is now available on docs.rs.

Changes

• Segmentation support is now a tunable SpeedSetting and currently it is default off since it can produce desyncs, this does cause a 3% decrease in quality.

Fixes

• #1903 - edge-of-frame miscomputation
• #1858 - desync on speed 0 and 1 when certain quantizers are selected

Known issues

• #1930 - segmentation encoding may cause desync

Weekly pre-release

Improvements

• Faster, around 20% more compared to the last pre-release
  • More assembly optimizations from dav1d, mainly impacting AArch64
  • Forward transform SIMD, to be accounted for the largest part of this week speedup
  • Simplifications and refactoring in the Motion Estimation and Scene Change
• Optional serialization/deserialization of the encoding parameters through the feature serialize
  • Optional cli advanced commands to use it.
• The builds are now using the dwarf debug format for the targets that support it, before it was a mixture of dwarf and stabs due to the nasm defaults.

Changes

• Segmentation support is now a tunable SpeedSetting and currently it is default off since it can produce desyncs.

Fixes

• #1903 - edge-of-frame miscomputation
• #1858 - desync on speed 0 and 1 when certain quantizers are selected

Known issues

• #1930 - segmentation encoding may cause desync

Weekly pre-release

Improvements

• Slightly faster.
• 60%-80% reduction in the resident set depending on the number of tiles in use. Now the resident set is nearly independent from the number of tiles in use.

Changes

• The CI now uses Github Actions
• The tags will be p${isodate} for prereleases and v{semver} for releases.

Fixes

• Relax the y4m memory limit, now 8k content can be encoded again.

Known issues

• #1903
• #1858

Weekly pre-release

Improvements

• Faster (9.5% on 1080p content with 8 tiles).
• More Aarch64 assembly support
• rdo-lookahead-frames CLI option

Changes

• mp4 output removed to avoid circular dependencies.

Fixes

• Unbreak the desync_finder feature

Known issues

• #1858 `Tune PSNR may cause desyncs on 4k content"

Weekly pre-release

Improvements

• Faster (21-26% on 1080p content with 8 tiles).
• Tracing support via hawktracer
• Basic in-bitstream timing info support
• ASM building is parallel now.

Changes

• CDEF damping is adjusted based on quantizer

Fixes

• Builds cleanly on rust 1.40
• Docs.rs generation is working

Known issues

• #1858 `Tune PSNR may cause desyncs on 4k content"

v0.1.0: Made in Tokyo

First official release, published during the Video Dev Days 2019 in Tokyo.

Features

• Intra and inter frames
• 64x64 superblocks
• 4x4 to 64x64 RDO-selected square and 2:1/1:2 rectangular blocks
• DC, H, V, Paeth, smooth, and a subset of directional prediction modes
• DCT, (FLIP-)ADST and identity transforms (up to 64x64, 16x16 and 32x32 respectively)
• 8-, 10- and 12-bit depth color
• 4:2:0 (full support), 4:2:2 and 4:4:4 (limited) chroma sampling
• 11 speed settings (0-10)
• Near real-time encoding at high speed levels
• Rate control (single-pass and two-pass)
• Temporal RDO
• Scene cut detection
• CLI tool and C API

Weekly pre-release

Improvements

• More x86 assembly from dav1d
• Validate the frame size to reject impossibly small frames.
• Initial SSE4.1 support

Changes

• serde is now optional
  • the fastrdo training feature is optional as well.

Fixes

• CDEF RDO could infiniloop in certain occasions.

Weekly pre-release

Improvements

• SSSE3 support
• Aarch64 neon support
• FlipADST
• Additional asm tests (CDEF, Inverse transform).
• Make sure all the dependencies are using the same version of syn, reducing the overall build time.

Changes

• The nasm feature had been renamed asm.

Fixes

• Unbreak C-API building on rust 1.38 and later.

Weekly pre-release

Improvements

• More API documentation
• Better error reporting
• Nicer error messages in the cli application
• Explicit validation of the encoder configuration
• The input Frame type can be expressed
• Added cargo-fuzz support and documented its usage
• Better rate-control support
• Two-pass rate-control support
• Additional speedups over all the speed levels on x86_64

Changes

• Tiles are now expressed in linear units (before were log2-units)
• The for color config enum variants now use the AV1 spec names
• The C-API is now part of the main repo, use cargo-c to build it
• send_frame can consume bare Frames
• Speed preset overhaul and rebalance

Fixes

• Invalid encoder settings, that would trigger panics on execution, are now caught on validation phase.
• Desync caused by a discrepancy of what would be the tile dimension and the loop restoration filter dimension when using certain tile sizes.