v3.0.0

• Removal of deprecated API compute_vmaf(), header file compute_vmaf.h.
• First release to include vmaf_cuda_* APIs, header file vmaf_cuda.h.
• Speedups and bug fixes.

v3.0.0-rc

Release candidate for upcoming libvmaf v3.0.0.

v2.3.1

(2022-04-11) [v2.3.1]

This is a minor release with some CAMBI extensions and speed-ups and adding it to AOM CTC v3, as well as a few minor fixes/cleanups.

• CAMBI extensions: full reference, PQ eotf, up to 16 bit-depth support, max_log_contrast parameter.
• CAMBI: option to output heatmaps.
• Many complier warnings cleaned up.

v2.3.0

(2021-10-16) [v2.3.0]

New release to add CAMBI (Contrast Aware Multiscale Banding Index).

• Python library: add encode width and height to Asset.
• libvmaf: add pixel format VMAF_PIX_FMT_YUV400P.
• Add cambi; add tests.
• Improve documentation. (#912)

v2.2.1

(2021-09-20) [v2.2.1]

This is another minor release to address a few last minute items for the AOM CTC v2, as well as a few minor fixes/cleanups.

• Fix a race condition in vmaf_thread_pool_wait(). (#894)
• Avoid chroma resampling for 420mpeg2 y4m input (#906)

v2.2.0

(2021-07-02) [v2.2.0]

This is a minor release to address a few items for the AOM CTC v2, as well as a few minor fixes/cleanups.

• Fixes a CIEDE-2000 precision issue, where cross-platform mismatches were seen. (#878)
• Adds libvmaf API function vmaf_feature_dictionary_free(). (#879)

v2.1.1

(2021-01-13) [v2.1.1]

This is a minor release to address a few last minute items for the initial AOM CTC.

• Fixes a SSIM/MS-SSIM precision bug where a lossless comparison did not always result in a perfect 1.0 score. (#796).
• Adds feature extractor options to clip the dB scores for both PSNR/SSIM. --aom_ctc v1.0 has been updated to use these clipping options according to the AOM CTC. (#802).

v2.1.0

(2020-12-30) [v2.1.0]

This is a minor release for the initial AOM CTC. Support has been added for templated feature names. While this is a general purpose software feature, templated feature names are immediately useful for simultaneous computation of VMAF and VMAF NEG since the two metrics rely on slightly different VIF/ADM variations. Global feature overrides via the --feature flag are no longer supported, instead individual models can have their features overloaded individually, the syntax for which is as follows:

--model version=vmaf_v0.6.1:vif.vif_enhn_gain_limit=1.0:adm.adm_enhn_gain_limit=1.0

New features:

• Per-model feature overloading via new API vmaf_model_feature_overload().
• Multiple unique configurations of the same feature extractor may be registered run at the same time.
• --aom_ctc v1.0 preset, encompassing all metrics specified by the AOM CTC.

v2.0.0

(2020-12-4) [v2.0.0]

This is a major release with an updated and overhauled libvmaf API. The vmafossexec command line tool has been deprecated and replaced with the more flexible and powerful vmaf tool. For an introduction to the libvmaf v2.0.0 API as well as an explanation of the new vmaf tool, please see the following README files: libvmaf, vmaf. Also part of this release is a new fixed-point and x86 SIMD-optimized (AVX2, AVX-512) implementation that achieves ~2x speed up compared to the previous floating-point version.

New features:

• Add PSNR-HVS and CIEDE2000 metrics.
• ci/actions: upload linux/macos artifacts (#738)
• libvmaf/feature: deprecate daala_ssim (#735)
• libvmaf: remove support for pkl models
• libvmaf/psnr: rewrite using integer types, 2x speedup
• vmaf: if no model is specified, enable v0.6.1 by default (#730)
• libvmaf/x86: add AVX2/AVX-512 optimizations for adm, vif and motion
• ci/actions: add xxd to build dependencies for Windows
• libvmaf: add support for built-in models
• libvmaf/integer_vif: use symmetrical mirroring on edges
• Fix log2 by replacing log2f_approx with log2f
• libvmaf_rc: provide a backwards compatible compute_vmaf(), link vmafossexec with libvmaf
• libvmaf: add framework support for json models
• libvmaf/libsvm: update libsvm to version 324
• libvmaf/motion: add motion_force_zero to motion fex
• return sha1 if Asset string is longer than 255
• Add CID/iCID Matlab source code
• build: unbreak x86 builds (Fixes: #374)
• Add 12bit and 16bit support for python YUV reader; add tests.
• Add PypsnrFeatureExtractor
• Add processes to FeatureAssembler. (#662)

Fixed bugs:

• fix motion flush for single frame input
• Fixing the perf_metric for a single entry list input

v1.5.3

(Updates since 1.5.1)

Fixed bugs:

• Fix inverted height and width in integer_motion in vmaf_rc (#650).

New features:

• libvmaf: add support for CSV and JSON logging
• Python: Add an (optional) step in Executor class to do python-based processing to ref/dis files (#523).
• Restructure python project and documentation (#544).
• Move test resource to Netflix/vmaf_resource repo (#552).
• Add Github CI (#558).
• Add vmaf_v0.6.1neg model; add vif_enhn_gain_limit and adm_enhn_gain_limit options to vmaf_rc.
• Update documentation for FFmpeg+libvmaf.
• Improvements to AucPerfMetric (#643).
• Add motion_force_zero option to vmaf_rc.