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upstream/3.13.1d772e334 · ·
Release v3.13.1 Opaline 2025-09-05 v3.13.1 This release is ABI compatible with the last release. This release fixes two issues with the newly installed cmake files in 3.13.0, there are no changes to the library except for the version number. - Bug Fixes * b:441135035#comment9: the version number in AOMConfig.cmake is now correct and AOM_LIBRARIES now contains only one libaom reference; there is a AOM_STATIC_LIBRARIES variable for the static target. Bug: 443333642 -
v3.13.1d772e334 · ·
Release v3.13.1 Opaline 2025-09-05 v3.13.1 This release is ABI compatible with the last release. This release fixes two issues with the newly installed cmake files in 3.13.0, there are no changes to the library except for the version number. - Bug Fixes * b:441135035#comment9: the version number in AOMConfig.cmake is now correct and AOM_LIBRARIES now contains only one libaom reference; there is a AOM_STATIC_LIBRARIES variable for the static target. Bug: 443333642 -
v3.13.0d9c115ce · ·
Release v3.13.0 Opaline 2025-09-02 v3.13.0 This release is ABI compatible with the last release. The aom_roi_map_t struct, used only by the codec control AOME_SET_ROI_MAP, was modified in this release. Since AOME_SET_ROI_MAP was unimplemented, aom_roi_map_t was effectively an unused struct. Therefore aom_roi_map_t is to be considered as a new struct added in this release and this change does not break ABI compatibility. - New Features * New tuning mode AOM_TUNE_SSIMULACRA2 for the AOME_SET_TUNING codec control (--tune=ssimulacra2) in all-intra mode. The feature detection macro AOM_HAVE_TUNE_SSIMULACRA2, if defined, indicates that AOM_TUNE_SSIMULACRA2 is available. AOM_TUNE_SSIMULACRA2 was developed to maximize SSIMULACRA 2 scores. * New codec control AV1E_SET_SCREEN_CONTENT_DETECTION_MODE (--screen-detection-mode). This codec control helps select between two screen detection modes: * Mode 1: standard (default) * Mode 2: anti-aliased text and graphics aware * New codec control AV1E_SET_ENABLE_ADAPTIVE_SHARPNESS (--enable-adaptive-sharpness). When enabled, it modulates sharpness based on frame QP, which helps mitigate blocking artifacts in the low to medium quality range. * Added low complexity decode mode for 720p vertical videos. * ROI feature implemented for RTC: for delta QP, skip encoding, and reference selection. * External scaling feature for SVC: allow downscaled images to be passed into encoder for spatial layers without reconfiguring it. * Allow per-frame calculation of PSNR (contribution from Meta). - Compression Efficiency Improvements * Variance Boost is now enabled for tuning modes AOM_TUNE_IQ and AOM_TUNE_SSIMULACRA2 at speeds 8 and 9 (2-5% SSIMULACRA 2 BD-Rate gains) * Several quality/time tradeoff improvements and bug fixes for all intra mode speeds 8 and 9. * Up to 6.9% SSIMULACRA 2 BD-Rate gains for speed 8 * Up to 2.2% SSIMULACRA 2 BD-Rate gains for speed 9 - Perceptual Quality Improvements * RTC: Visual quality improvements for screen content mode. * RTC: Visual quality improvements for video mode for resolutions >= 720p. - Speedups * Optimize intraBC search for better speed/efficiency tradeoffs for all intra mode speeds >= 1 * Optimize intraBC block hashing process * RTC Screen: speed feature added to speed 12 for ~2x speedup on slide/scene changes, for resolutions >= 720p. * ML based speedup improvement on the partition pruning for speed <= 2 - Other Improvements * Fixes for RPS (reference picture selection) for RTC: Based on av1_discuss issue: https://groups.google.com/a/aomedia.org/g/av1-discuss/c/sqFad980SsA - Bug Fixes * b:421196988: all intra speed 8: overuse of palette mode unnecessarily inflating file sizes * b:423804955: Improve quality for 4K Screencast * webrtc:388070060: Allow per-frame calculation of PSNR * b:433046392, b:432035817: Fix to SVC crash triggered with Jitsi video conference app. * b:419622699: Fix integer overflow in update_buffer_level * b:407813259: Fix to update seq_params for number of layers change * b:400885218: External scaling for AV1 * b:391849810: High AV1 frame encode time on slide changes * b:399575647: Too aggressive QP backoff at scene changes * b:383306740: Quality degradation at horizontal scrolling Bug: 441135035 -
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v3.12.110aece41 · ·
Release v3.12.1 2025-04-11 v3.12.1 This release includes several bug fixes. This release is ABI compatible with the last release. See https://aomedia.googlesource.com/aom/+log/v3.12.0..v3.12.1 for all the commits in this release. - Bug Fixes * b:396169342: Assertion `av1_is_subpelmv_in_range(&ms_params.mv_limits, start_mv)' failed. * b:401671154: typo in void init_src_params(...) * Coverity defect 323670: Uninitialized scalar variable in encode_with_and_without_superres() * cmake: bump minimum version to 3.16 * cfl_ppc: fix subtract_average_vsx * Fix an incorrect index in av1_highbd_pixel_proj_error_neon Bug: 409848651 -
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v3.12.03b624af4 · ·
libaom v3.12.0 North Star release 2025-02-10 v3.12.0 This release includes new codec interfaces, compression efficiency and perceptual improvements, speedup and memory optimizations, and bug fixes. This release is ABI compatible with the last release. Five internal functions (aom_free, aom_malloc, aom_wb_bytes_written, aom_wb_write_bit, aom_wb_write_literal) that were exported by mistake are no longer exported from the libaom shared library. The removal of these internal functions from the ABI is a bug fix and does not break ABI compatibility. Acknowledgments: The image quality optimizations in the new tuning mode AOM_TUNE_IQ were originally developed for SVT-AV1-PSY by Cole Ogaard, Gianni Rosato, Julio Barba, and Zakaria Djebrouni. - New Features * New tuning mode AOM_TUNE_IQ (image quality) for the AOME_SET_TUNING codec control (--tune=iq) in all-intra mode. The feature detection macro AOM_HAVE_TUNE_IQ, if defined, indicates that AOM_TUNE_IQ is available. The image quality optimizations in AOM_TUNE_IQ were developed by using the SSIMULACRA 2 metric for guidance and validated with subjective visual quality checks. * New value 6 for the AV1E_SET_DELTAQ_MODE codec control (--deltaq-mode): use modulation for all intra using Variance Boost. Variance Boost is a variance adaptive quantization implementation that modulates qindex depending on the ratio of low-variance to high-variance 8x8 subblocks within a 64x64 superblock, as well as the actual variance of the subblocks themselves. * New value 3 for the AV1E_SET_ENABLE_CDEF codec control (--enable-cdef): Enable CDEF adaptively based on frame qindex. * In all-intra mode, the AOME_SET_SHARPNESS codec control now also sets the loop_filter_sharpness syntax element in the bitstream. Larger values increasingly reduce how much the filtering can change the sample values on block edges to favor perceived sharpness. * In all-intra mode, the default value of the AV1E_SET_QM_MIN codec control is decreased to 4, and the default value of the AV1E_SET_QM_MAX codec control is increased to 10. The default values in good-quality and realtime modes remain unchanged (5 and 9, respectively). - Compression Efficiency Improvements * Tuning mode AOM_TUNE_IQ improves image compression efficiency on the CLIC dataset by up to 12% for the same SSIMULACRA 2 score, up to 14% for the same DSSIM score, and up to 17% for the same Butteraugli score. * ~3% BD-rate gains for speed 11 VGA camera mode. * ~5% BD-rate gains for speed 11 on scroll clips screen mode. - Perceptual Quality Improvements * Adjust temporal filter strength for better visual quality. * RTC screen: visual quality improvements for scrolling and for scene/slide changes. * RTC camera mode: visual quality improvements for speed 11 VGA. - Speedup and Memory Optimizations * Optimize the Arm Neon implementation of the loop filter functions with an average uplift of 15 - 25% in microbenchmarks. * Add the CDEF optimization for RISC-V. * Help the compiler generate better vectorized code for variance calculation and warped motion in generic CPU builds. * Make several arrays const. - Other Improvements * Binary size reduction: 1 - 2% compared with last release, with CONFIG_REALTIME_ONLY enabled, CONFIG_AV1_DECODER and CONFIG_AV1_HIGHBITDEPTH disabled. * Build: compile source files in parallel under MSVC. - Bug Fixes * Fix bug where metadata added with aom_img_add_metadata was lost when frame scaling was used. * Bug b:383306740: RTC: Fix to issues with scrolling for screen content. * Bug b:382465458: RTC: Fix to artifact for grayscale input. * Bug b:380247338: RTC: Fix to encode_time spikes on scene/slide changes. * RTC: Fix to rate correction factor update for VBR screen mode. https://groups.google.com/a/aomedia.org/g/av1-discuss/c/nJxECdg-7P8 * Bug b:378401081: RTC: Fix to cyclic refresh update for external RC (rate control). Bug: 394596176