| 2022-06-17 v3.4.0 |
| This release includes compression efficiency and perceptual quality |
| improvements, speedup and memory optimizations, and some new features. |
| There are no ABI or API breaking changes in this release. |
| |
| - New Features |
| * New --dist-metric flag with "qm-psnr" value to use quantization |
| matrices in the distortion computation for RD search. The default |
| value is "psnr". |
| * New command line option "--auto-intra-tools-off=1" to make |
| all-intra encoding faster for high bit rate under |
| "--deltaq-mode=3" mode. |
| * New rate control library aom_av1_rc for real-time hardware |
| encoders. Supports CBR for both one spatial layer and SVC. |
| * New image format AOM_IMG_FMT_NV12 can be used as input to the |
| encoder. The presence of AOM_IMG_FMT_NV12 can be detected at |
| compile time by checking if the macro AOM_HAVE_IMG_FMT_NV12 is |
| defined. |
| * New codec controls for the encoder: |
| o AV1E_SET_AUTO_INTRA_TOOLS_OFF. Only in effect if |
| --deltaq-mode=3. |
| o AV1E_SET_RTC_EXTERNAL_RC |
| o AV1E_SET_FP_MT. Only supported if libaom is built with |
| -DCONFIG_FRAME_PARALLEL_ENCODE=1. |
| o AV1E_GET_TARGET_SEQ_LEVEL_IDX |
| * New key-value pairs for the key-value API: |
| o --auto-intra-tools-off=0 (default) or 1. Only in effect if |
| --deltaq-mode=3. |
| o --strict-level-conformance=0 (default) or 1 |
| o --fp-mt=0 (default) or 1. Only supported if libaom is built |
| with -DCONFIG_FRAME_PARALLEL_ENCODE=1. |
| * New aomenc options (not supported by the key-value API): |
| o --nv12 |
| |
| - Compression Efficiency Improvements |
| * Correctly calculate SSE for high bitdepth in skip mode, 0.2% to |
| 0.6% coding gain. |
| * RTC at speed 9/10: BD-rate gain of ~4/5% |
| * RTC screen content coding: many improvements for real-time screen |
| at speed 10 (quality, speedup, and rate control), up to high |
| resolutions (1080p). |
| * RTC-SVC: fixes to make intra-only frames work for spatial layers. |
| * RTC-SVC: quality improvements for temporal layers. |
| * AV1 RT: A new passive rate control strategy for screen content, an |
| average of 7.5% coding gain, with some clips of 20+%. The feature |
| is turned off by default due to higher bit rate variation. |
| |
| - Perceptual Quality Improvements |
| * RTC: Visual quality improvements for high speeds (9/10) |
| * Improvements in coding quality for all intra mode |
| |
| - Speedup and Memory Optimizations |
| * ~10% speedup in good quality mode encoding. |
| * ~7% heap memory reduction in good quality encoding mode for speed |
| 5 and 6. |
| * Ongoing improvements to intra-frame encoding performance on Arm |
| * Faster encoding speed for "--deltaq-mode=3" mode. |
| * ~10% speedup for speed 5/6, ~15% speedup for speed 7/8, and |
| ~10% speedup for speed 9/10 in real time encoding mode |
| * ~20% heap memory reduction in still-picture encoding mode for |
| 360p-720p resolutions with multiple threads |
| * ~13% speedup for speed 6 and ~12% speedup for speed 9 in |
| still-picture encoding mode. |
| * Optimizations to improve multi-thread efficiency for still-picture |
| encoding mode. |
| |
| - Bug Fixes |
| * b/204460717: README.md: replace master with main |
| * b/210677928: libaom disable_order is surprising for |
| max_reference_frames=3 |
| * b/222461449: -DCONFIG_TUNE_BUTTERAUGLI=1 broken |
| * b/227207606: write_greyscale writes incorrect chroma in highbd |
| mode |
| * b/229955363: Integer-overflow in linsolve_wiener |
| * https://crbug.com/aomedia/2032 |
| * https://crbug.com/aomedia/2397 |
| * https://crbug.com/aomedia/2563 |
| * https://crbug.com/aomedia/2815 |
| * https://crbug.com/aomedia/3009 |
| * https://crbug.com/aomedia/3018 |
| * https://crbug.com/aomedia/3045 |
| * https://crbug.com/aomedia/3101 |
| * https://crbug.com/aomedia/3130 |
| * https://crbug.com/aomedia/3173 |
| * https://crbug.com/aomedia/3184 |
| * https://crbug.com/aomedia/3187 |
| * https://crbug.com/aomedia/3190 |
| * https://crbug.com/aomedia/3195 |
| * https://crbug.com/aomedia/3197 |
| * https://crbug.com/aomedia/3201 |
| * https://crbug.com/aomedia/3202 |
| * https://crbug.com/aomedia/3204 |
| * https://crbug.com/aomedia/3205 |
| * https://crbug.com/aomedia/3207 |
| * https://crbug.com/aomedia/3208 |
| * https://crbug.com/aomedia/3209 |
| * https://crbug.com/aomedia/3213 |
| * https://crbug.com/aomedia/3214 |
| * https://crbug.com/aomedia/3219 |
| * https://crbug.com/aomedia/3222 |
| * https://crbug.com/aomedia/3223 |
| * https://crbug.com/aomedia/3225 |
| * https://crbug.com/aomedia/3226 |
| * https://crbug.com/aomedia/3228 |
| * https://crbug.com/aomedia/3232 |
| * https://crbug.com/aomedia/3236 |
| * https://crbug.com/aomedia/3237 |
| * https://crbug.com/aomedia/3238 |
| * https://crbug.com/aomedia/3240 |
| * https://crbug.com/aomedia/3243 |
| * https://crbug.com/aomedia/3244 |
| * https://crbug.com/aomedia/3246 |
| * https://crbug.com/aomedia/3248 |
| * https://crbug.com/aomedia/3250 |
| * https://crbug.com/aomedia/3251 |
| * https://crbug.com/aomedia/3252 |
| * https://crbug.com/aomedia/3255 |
| * https://crbug.com/aomedia/3257 |
| * https://crbug.com/aomedia/3259 |
| * https://crbug.com/aomedia/3260 |
| * https://crbug.com/aomedia/3267 |
| * https://crbug.com/aomedia/3268 |
| * https://crbug.com/aomedia/3269 |
| * https://crbug.com/aomedia/3276 |
| * https://crbug.com/aomedia/3278 |
| * https://crbug.com/chromium/1290068 |
| * https://crbug.com/chromium/1303237 |
| * https://crbug.com/chromium/1304990 |
| * https://crbug.com/chromium/1321141 |
| * https://crbug.com/chromium/1321388 |
| * https://crbug.com/oss-fuzz/44846 |
| * https://crbug.com/oss-fuzz/44856 |
| * https://crbug.com/oss-fuzz/44862 |
| * https://crbug.com/oss-fuzz/44904 |
| * https://crbug.com/oss-fuzz/45056 |
| |
| 2022-01-28 v3.3.0 |
| This release includes compression efficiency and perceptual quality |
| improvements, speedup and memory optimizations, some new features, and |
| several bug fixes. |
| |
| - New Features |
| * AV1 RT: Introducing CDEF search level 5 |
| * Changed real time speed 4 to behave the same as real time speed 5 |
| * Add --deltaq-strength |
| * rtc: Allow scene-change and overshoot detection for svc |
| * rtc: Intra-only frame for svc |
| * AV1 RT: Option 2 for codec control AV1E_SET_ENABLE_CDEF to disable |
| CDEF on non-ref frames |
| * New codec controls AV1E_SET_LOOPFILTER_CONTROL and |
| AOME_GET_LOOPFILTER_LEVEL |
| * Improvements to three pass encoding |
| |
| - Compression Efficiency Improvements |
| * Overall compression gains: 0.6% |
| |
| - Perceptual Quality Improvements |
| * Improves the perceptual quality of high QP encoding for delta-q mode 4 |
| * Auto select noise synthesis level for all intra |
| |
| - Speedup and Memory Optimizations |
| * Added many SSE2 optimizations. |
| * Good quality 2-pass encoder speedups: |
| o Speed 2: 9% |
| o Speed 3: 12.5% |
| o Speed 4: 8% |
| o Speed 5: 3% |
| o Speed 6: 4% |
| * Real time mode encoder speedups: |
| o Speed 5: 2.6% BDRate gain, 4% speedup |
| o Speed 6: 3.5% BDRate gain, 4% speedup |
| o Speed 9: 1% BDRate gain, 3% speedup |
| o Speed 10: 3% BDRate gain, neutral speedup |
| * All intra encoding speedups (AVIF): |
| o Single thread - speed 6: 8% |
| o Single thread - speed 9: 15% |
| o Multi thread(8) - speed 6: 14% |
| o Multi thread(8) - speed 9: 34% |
| |
| - Bug Fixes |
| * Issue 3163: Segmentation fault when using --enable-keyframe-filtering=2 |
| * Issue 2436: Integer overflow in av1_warp_affine_c() |
| * Issue 3226: armv7 build failure due to gcc-11 |
| * Issue 3195: Bug report on libaom (AddressSanitizer: heap-buffer-overflow) |
| * Issue 3191: Bug report on libaom (AddressSanitizer: SEGV on unknown |
| address) |
| * Issue 3176: Some SSE2/SADx4AvgTest.* tests fail on Windows |
| * Issue 3175: Some SSE2/SADSkipTest.* tests fail on Windows |
| |
| 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. |
