| 2021-10-13 v3.2.0 | |
| This release includes compression efficiency and perceptual quality | |
| improvements, speedup and memory optimizations, as well as some new | |
| features. | |
| - New Features | |
| * Introduced speeds 7, 8, and 9 for all intra mode. | |
| * Introduced speed 10 for real time mode. | |
| * Introduced an API that allows external partition decisions. | |
| * SVC: added support for compound prediction. | |
| * SVC: added support for fixed SVC modes. | |
| - Compression Efficiency Improvements | |
| * Intra-mode search improvement. | |
| * Improved real time (RT) mode BDrate savings by ~5% (RT speed 5) | |
| and ~12% (RT speed 6). The improvement was measured on the video | |
| conference set. | |
| * Improved real time mode for nonrd path (speed 7, 8, 9): BDrate | |
| gains of ~3-5%. | |
| * Rate control and RD adjustments based on ML research in VP9. | |
| Gains of ~0.5-1.0% for HD. | |
| - Perceptual Quality Improvements | |
| * Added a new mode --deltaq-mode=3 to improve perceptual quality | |
| based on a differential contrast model for still images. | |
| * Added a new mode –deltaq-mode=4 to improve perceptual quality | |
| based on user rated cq_level data set for still images. | |
| * Weighting of some intra mode and partition size choices to better | |
| manage and retain texture. | |
| - Speedup and Memory Optimizations | |
| * Further improved 2-pass good quality encoder speed: | |
| o Speed 2 speedup: 18% | |
| o Speed 3 speedup: 22% | |
| o Speed 4 speedup: 37% | |
| o Speed 5 speedup: 30% | |
| o Speed 6 speedup: 20% | |
| * Optimized the real time encoder (measured on the video conference | |
| set): | |
| o RT speed 5 speedup: 110% | |
| o RT speed 6 speedup: 77% | |
| - Bug Fixes | |
| * Issue 3069: Fix one-pass mode keyframe placement off-by-one error. | |
| * Issue 3156: Fix a bug in av1_quantize_lp AVX2 optimization. | |
| 2021-09-29 v3.1.3 | |
| This release includes several bug fixes. | |
| - Bug fixes: | |
| The following four cmake changes should help the people building | |
| libaom using MSVC. | |
| 1. exports: use CMAKE_SHARED_LIBRARY_PREFIX to determine lib name | |
| https://aomedia-review.googlesource.com/c/aom/+/142342 | |
| 2. aom_install: Install lib dlls to bindir | |
| https://aomedia-review.googlesource.com/c/aom/+/146546 | |
| 3. aom_install: use relpath for install | |
| https://aomedia-review.googlesource.com/c/aom/+/146550 | |
| 4. aom_install: don't exclude msvc from install | |
| https://aomedia-review.googlesource.com/c/aom/+/146547 | |
| aom/aom_encoder.h: remove configure option reference | |
| https://aomedia-review.googlesource.com/c/aom/+/146743 | |
| Issue 3113: Tests for detecting chroma subsampling in | |
| av1_copy_and_extend_frame() do not work when y_width or y_height is | |
| 1 | |
| Issue 3115: image2yuvconfig() should calculate uv_crop_width and | |
| uv_crop_height from y_crop_width and y_crop_height | |
| Issue 3140: rc_overshoot_pct is documented as having a range of | |
| 0-1000, but is range checked against 0-100 | |
| Issue 3147: Build failure on Apple M1 arm64 | |
| 2021-07-20 v3.1.2 | |
| This release includes several bug fixes. | |
| - Bug fixes: | |
| exports.cmake: use APPLE and WIN32 and use def for mingw-w64 | |
| https://aomedia-review.googlesource.com/c/aom/+/139882 | |
| Issue 2993: Incorrect spatial_id when decoding base layer of | |
| multi-layer stream | |
| Issue 3080: Chroma Resampling by Encoder on Y4M Inputs Files Tagged | |
| as C420mpeg2 | |
| Issue 3081: Use of uninitialized value $version_extra in | |
| concatenation (.) or string at aom/build/cmake/version.pl line 88. | |
| 2021-06-08 v3.1.1 | |
| This release includes several bug fixes. | |
| - Bug fixes: | |
| Issue 2965: Cherry-picked the following four commits for the | |
| tune=butteraugli mode. | |
| 1. Add libjxl to pkg_config if enabled: | |
| https://aomedia-review.googlesource.com/c/aom/+/136044 | |
| 2. Declare set_mb_butteraugli_rdmult_scaling static: | |
| https://aomedia-review.googlesource.com/c/aom/+/134506 | |
| 3. Add color range detection in tune=butteraugli mode: | |
| https://aomedia-review.googlesource.com/c/aom/+/135521 | |
| 4. Enable tune=butteraugli in all-intra mode: | |
| https://aomedia-review.googlesource.com/c/aom/+/136082 | |
| Issue 3021: Fix vmaf model initialization error when not set to | |
| tune=vmaf | |
| Issue 3050: Compilation fails with -DCONFIG_TUNE_VMAF=1 | |
| Issue 3054: Consistent crash on near-static screen content, keyframe | |
| related | |
| 2021-05-03 v3.1.0 | |
| This release adds an "all intra" mode to the encoder, which significantly | |
| speeds up the encoding of AVIF still images at speed 6. | |
| - Upgrading: | |
| All intra mode for encoding AVIF still images and AV1 all intra videos: | |
| AOM_USAGE_ALL_INTRA (2) can be passed as the 'usage' argument to | |
| aom_codec_enc_config_default(). | |
| New encoder control IDs added: | |
| - AV1E_SET_ENABLE_DIAGONAL_INTRA: Enable diagonal (D45 to D203) intra | |
| prediction modes (0: false, 1: true (default)). Also available as | |
| "enable-diagonal-intra" for the aom_codec_set_option() function. | |
| New aom_tune_metric enum value: AOM_TUNE_BUTTERAUGLI. The new aomenc option | |
| --tune=butteraugli was added to optimize the encoder’s perceptual quality by | |
| optimizing the Butteraugli metric. Install libjxl (JPEG XL) and then pass | |
| -DCONFIG_TUNE_BUTTERAUGLI=1 to the cmake command to enable it. | |
| Addition of support for libvmaf 2.x. | |
| - Enhancements: | |
| Heap memory consumption for encoding AVIF still images is significantly | |
| reduced. | |
| - Bug fixes: | |
| Issue 2601: third_party/libaom fails licensecheck | |
| Issue 2950: Conditional expression for rc->this_key_frame_forced is always | |
| true in find_next_key_frame() | |
| Issue 2988: "make install" installs the aom.h header twice | |
| Issue 2992: Incorrectly printing the temporal_id twice in dump_obu tool | |
| Issue 2998: | |
| Issue 2999: | |
| Issue 3000: | |
| 2021-02-24 v3.0.0 | |
| This release includes compression efficiency improvement, speed improvement | |
| for realtime mode, as well as some new APIs. | |
| - Upgrading: | |
| Support for PSNR calculation based on stream bit-depth. | |
| New encoder control IDs added: | |
| - AV1E_SET_ENABLE_RECT_TX | |
| - AV1E_SET_VBR_CORPUS_COMPLEXITY_LAP | |
| - AV1E_GET_BASELINE_GF_INTERVAL | |
| - AV1E_SET_ENABLE_DNL_DENOISING | |
| New decoder control IDs added: | |
| - AOMD_GET_FWD_KF_PRESENT | |
| - AOMD_GET_FRAME_FLAGS | |
| - AOMD_GET_ALTREF_PRESENT | |
| - AOMD_GET_TILE_INFO | |
| - AOMD_GET_SCREEN_CONTENT_TOOLS_INFO | |
| - AOMD_GET_STILL_PICTURE | |
| - AOMD_GET_SB_SIZE | |
| - AOMD_GET_SHOW_EXISTING_FRAME_FLAG | |
| - AOMD_GET_S_FRAME_INFO | |
| New aom_tune_content enum value: AOM_CONTENT_FILM | |
| New aom_tune_metric enum value: AOM_TUNE_VMAF_NEG_MAX_GAIN | |
| Coefficient and mode update can be turned off via | |
| AV1E_SET_{COEFF/MODE}_COST_UPD_FREQ. | |
| New key & value API added, available with aom_codec_set_option() function. | |
| Scaling API expanded to include 1/4, 3/4 and 1/8. | |
| - Enhancements: | |
| Better multithreading performance with realtime mode. | |
| New speed 9 setting for faster realtime encoding. | |
| Smaller binary size with low bitdepth and realtime only build. | |
| Temporal denoiser and its optimizations on x86 and Neon. | |
| Optimizations for scaling. | |
| Faster encoding with speed settings 2 to 6 for good encoding mode. | |
| Improved documentation throughout the library, with function level | |
| documentation, tree view and support for the dot tool. | |
| - Bug fixes: | |
| Aside from those mentioned in v2.0.1 and v2.0.2, this release includes the | |
| following bug fixes: | |
| Issue 2940: Segfault when encoding with --use-16bit-internal and --limit > 1 | |
| Issue 2941: Decoder mismatch with --rt --bit-depth=10 and --cpu-used=8 | |
| Issue 2895: mingw-w64 i686 gcc fails to build | |
| Issue 2874: Separate ssse3 functions from sse2 file. | |
| 2021-02-09 v2.0.2 | |
| This release includes several bug fixes. | |
| - Bug fixes: | |
| Issue 2643: Modify the assertion in temporal filter intrinsics. | |
| Issue 2648: Fix unit test ThreadTestLarge.EncoderResultTest/49 | |
| assertion failure. | |
| Issue 2869: Add -Wimplicit-function-declaration as C flag only. | |
| Issue 2878: Avoid memset in the av1_filter_intra_predictor module | |
| functions. | |
| Issue 2903: Fix a typo bug in apply_temporal_filter_planewise. | |
| Call av1_setup_frame_size() when dropping a frame in the | |
| encode_frame_to_data_rate() function in av1/encoder/encoder.c. | |
| 2020-11-25 v2.0.1 | |
| This release includes two bug fixes. | |
| - Bug fixes: | |
| Issue 2723: Fix crash in chroma_check() when generating a monochrome | |
| encoded stream in real-time mode. | |
| Issue 2833: Fix crash on some input when reduced still picture header is | |
| used in real-time mode and speed >=7. | |
| 2020-05-07 v2.0.0 "Applejack" | |
| First official release of libaom. | |
| This release includes new real-time mode and SVC support. | |
| - Upgrading: | |
| AOM_SET_POSTPROC, AOM_CODEC_CAP_POSTPROC and AOM_CODEC_USE_POSTPROC are | |
| removed. | |
| AOM_SET_DBG_* is removed. | |
| Multi-resolution encoding is removed. | |
| put_frame and put_slice callbacks are removed. | |
| - Enhancements: | |
| Full-sweep document update for codec controls. | |
| 2018-06-28 v1.0.0 | |
| AOMedia Codec Workgroup Approved version 1.0 | |
| 2016-04-07 v0.1.0 "AOMedia Codec 1" | |
| This release is the first Alliance for Open Media codec. |