libaom v3.7.0 Iron Bark Released
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Jerome Jiang
Aug 31, 2023, 7:56:03 PM8/31/23
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Hello everyone,
libaom v3.7.0 Iron Bark has been released. The source code of the release can be checked out from the git repository[1] using release tag v3.7.0. Alternatively, the release tarball[2], along with the signature file[3], can be downloaded.
Special thanks to the Arm team for their contributions to the optimizations in this release.
Thanks.
Release Note:
2023-08-10 v3.7.0
This release includes new codec interfaces, compression efficiency and
perceptual improvements, speedup and memory optimizations and many bug fixes.
This release is ABI compatible with the last release.
- New Features
* New codec controls:
* AV1E_SET_QUANTIZER_ONE_PASS: Set quantizer for each frame.
* AV1E_ENABLE_RATE_GUIDE_DELTAQ: enable the rate distribution guided delta
quantization in all intra mode. The "enable-rate-guide-deltaq" option is
added for this control.
* AV1E_SET_RATE_DISTRIBUTION_INFO: set the input file for rate
distribution used in all intra mode. The "rate-distribution-info" option
is added for this control.
* AV1E_GET_LUMA_CDEF_STRENGTH
* AV1E_SET_BITRATE_ONE_PASS_CBR
* AOM_SCALING_MODE is extended to include 2/3 and 1/3 scaling.
* aom_tune_metric is extended to include AOM_TUNE_VMAF_SALIENCY_MAP.
The "tune" option is extended to include "vmaf_saliency_map".
* SVC example encoder svc_encoder_rtc is able to use the rate control
library.
* Loopfilter level and CDEF filter level is supported by RTC rate control
library.
* New speed (--cpu-used) 11, intended for RTC screen sharing, added for
faster encoding with ~3% bdrate loss with 16% IC (instruction count)
speedup compared to speed 10.
- Compression Efficiency Improvements
* Improved VoD encoding performance
* 0.1-0.6% BDrate gains for encoding speeds 2 to 6
* Rate control accuracy improvement in VBR mode
* RTC encoding improvements
* Screen content mode: 10-19% BDrate gains for speeds 6 - 10
* Temporal layers video mode, for speed 10:
* 2 temporal layers on low resolutions: 13-15% BDrate gain
* 3 temporal layers on VGA/HD: 3-4% BDrate gain
- Perceptual Quality Improvements
* Fixed multiple block and color artifacts for RTC screen content by
* Incorporating color into RD cost for IDTX
* Reducing thresholds for palette mode in non RD mode
* Allowing more palette mode testing
* Improved color sensitivity for altref in non-RD mode.
* Reduced video flickering for temporal layer encoding.
- Speedup and Memory Optimizations
* Speed up the VoD encoder
* 2-5% for encoding speed 2 to 4
* 9-15% for encoding speed 5 to 6
* ARM
* Standard bitdepth
* speed 5: +31%
* speed 4: +2%
* speed 3: +9%
* speed 2: +157%
* High bitdepth
* speed 5: +85%
* RTC speedups
* Screen content mode
* 15% IC speedup for speeds 6-8
* ARM: 7% for speed 9, 3% for speed 10
* Temporal layers video mode
* 7% speedup for 3 temporal layers on VGA/HD, for speed 10
* Single layer video
* x86: 2% IC speedup for speeds 7-10
* ARM: 2-4% speedup across speeds 5-10
- Other improvements
* VoD: Major improvements to global motion estimation, now enabled up to
speed 4
* RTC
* Fixes to make lossless coding work.
* Fixes to make frame dropper (--drop_frames) work for single and temporal
layers.
* Improvements to RPS (reference picture selection) recovery frames.
* Improvements to rate control for temporal layers.
* libwebm is updated to libwebm-1.0.0.29-9-g1930e3c
- Bug Fixes
* aomedia:3261 Assertion failed when encoding av1 with film grain and
'--monochrome' flag
* aomedia:3276 ensure all allocations are checked (partial fix)
* aomedia:3451 The libaom library calls exit()
* aomedia:3450 enable -Wshadow for C++ sources
* aomedia:3449 Test Seg Faults After
b459af3e345be402db052a143fcc5383d4b74cbd
* aomedia:3416 prune unused symbols / restrict symbol visibility
* aomedia:3443 Jenkins failure:
UninstantiatedParameterizedTestSuite<EstimateNoiseTest>
* aomedia:3434 realtime failures with CONFIG_BITSTREAM_DEBUG=1
* aomedia:3433 DeltaqModeTest crash w/row_mt=0
* aomedia:3429 Encoder crash when turn on both ExternalResize and
g_threads > 2
* aomedia:3438 Build failure with
`-DSANITIZE=address -DBUILD_SHARED_LIBS=ON` when using clang.
* aomedia:3435 Block artifacts when scrolling with AV1 in screen sharing
scenarios
* aomedia:3170 vmaf tune presets produce extreme glitches in one scene
* aomedia:3401 Building shared libaom with MSVC results in a race condition
with the export library
* aomedia:3420 Floating point exception in av1_tpl_get_frame_importance()
* aomedia:3424 heap-buffer-overflow in ScaleFilterCols_16_C() (SIGABRT)
* aomedia:3417 examples/svc_encoder_rtc.c is using internal macros and
functions
* aomedia:3372 SEGV in assign_frame_buffer_p av1_common_int.h
* aomedia:3130 'cpu-features.h' file not found on Android NDK 22
* aomedia:3415 Encoder/decoder mismatch for svc_encoder_rtc running
1 SL 3 TL
* aomedia:3412 Lossless Mode Fails Loopback Bit Test
* aomedia:3409 The use of AV1_VAR_OFFS in av1/encoder/var_based_part.c is
incorrect for high bit depths
* aomedia:3403 test_libaom fails with error message
"feenableexcept() failed" on Linux arm
* aomedia:3370 Random color block at fast motion area
* aomedia:3393 Assertion failure in av1_convolve_2d_sr_c()
* aomedia:3392 Strong artifacting for high bit-depth real-time
* aomedia:3376 aomenc --threads=10 --deltaq-mode=3 crashes after
"Allintra: multi-threading of calculating differential contrast"
* aomedia:3380 Crashes and ASan and TSan errors in deltaq-mode=3
multithreading code
* chromium:1410766 heap-buffer-overflow in aom_yv12_copy_v_c
* Cannot set level via AV1E_SET_TARGET_SEQ_LEVEL_IDX
* Encoding failure due to the use of loop restoration with unintended use of
lossless mode.
* Signed integer overflow in scan_past_frames
* Signed integer overflow in update_a_sep_sym
* Flickering in AV1 1440p/2160p HDR transcodes
* Fixed artifacts with screen share at encoder speed 10
* Fixed prediction setup for IDTX
This release includes new codec interfaces, compression efficiency and
perceptual improvements, speedup and memory optimizations and many bug fixes.
This release is ABI compatible with the last release.
- New Features
* New codec controls:
* AV1E_SET_QUANTIZER_ONE_PASS: Set quantizer for each frame.
* AV1E_ENABLE_RATE_GUIDE_DELTAQ: enable the rate distribution guided delta
quantization in all intra mode. The "enable-rate-guide-deltaq" option is
added for this control.
* AV1E_SET_RATE_DISTRIBUTION_INFO: set the input file for rate
distribution used in all intra mode. The "rate-distribution-info" option
is added for this control.
* AV1E_GET_LUMA_CDEF_STRENGTH
* AV1E_SET_BITRATE_ONE_PASS_CBR
* AOM_SCALING_MODE is extended to include 2/3 and 1/3 scaling.
* aom_tune_metric is extended to include AOM_TUNE_VMAF_SALIENCY_MAP.
The "tune" option is extended to include "vmaf_saliency_map".
* SVC example encoder svc_encoder_rtc is able to use the rate control
library.
* Loopfilter level and CDEF filter level is supported by RTC rate control
library.
* New speed (--cpu-used) 11, intended for RTC screen sharing, added for
faster encoding with ~3% bdrate loss with 16% IC (instruction count)
speedup compared to speed 10.
- Compression Efficiency Improvements
* Improved VoD encoding performance
* 0.1-0.6% BDrate gains for encoding speeds 2 to 6
* Rate control accuracy improvement in VBR mode
* RTC encoding improvements
* Screen content mode: 10-19% BDrate gains for speeds 6 - 10
* Temporal layers video mode, for speed 10:
* 2 temporal layers on low resolutions: 13-15% BDrate gain
* 3 temporal layers on VGA/HD: 3-4% BDrate gain
- Perceptual Quality Improvements
* Fixed multiple block and color artifacts for RTC screen content by
* Incorporating color into RD cost for IDTX
* Reducing thresholds for palette mode in non RD mode
* Allowing more palette mode testing
* Improved color sensitivity for altref in non-RD mode.
* Reduced video flickering for temporal layer encoding.
- Speedup and Memory Optimizations
* Speed up the VoD encoder
* 2-5% for encoding speed 2 to 4
* 9-15% for encoding speed 5 to 6
* ARM
* Standard bitdepth
* speed 5: +31%
* speed 4: +2%
* speed 3: +9%
* speed 2: +157%
* High bitdepth
* speed 5: +85%
* RTC speedups
* Screen content mode
* 15% IC speedup for speeds 6-8
* ARM: 7% for speed 9, 3% for speed 10
* Temporal layers video mode
* 7% speedup for 3 temporal layers on VGA/HD, for speed 10
* Single layer video
* x86: 2% IC speedup for speeds 7-10
* ARM: 2-4% speedup across speeds 5-10
- Other improvements
* VoD: Major improvements to global motion estimation, now enabled up to
speed 4
* RTC
* Fixes to make lossless coding work.
* Fixes to make frame dropper (--drop_frames) work for single and temporal
layers.
* Improvements to RPS (reference picture selection) recovery frames.
* Improvements to rate control for temporal layers.
* libwebm is updated to libwebm-1.0.0.29-9-g1930e3c
- Bug Fixes
* aomedia:3261 Assertion failed when encoding av1 with film grain and
'--monochrome' flag
* aomedia:3276 ensure all allocations are checked (partial fix)
* aomedia:3451 The libaom library calls exit()
* aomedia:3450 enable -Wshadow for C++ sources
* aomedia:3449 Test Seg Faults After
b459af3e345be402db052a143fcc5383d4b74cbd
* aomedia:3416 prune unused symbols / restrict symbol visibility
* aomedia:3443 Jenkins failure:
UninstantiatedParameterizedTestSuite<EstimateNoiseTest>
* aomedia:3434 realtime failures with CONFIG_BITSTREAM_DEBUG=1
* aomedia:3433 DeltaqModeTest crash w/row_mt=0
* aomedia:3429 Encoder crash when turn on both ExternalResize and
g_threads > 2
* aomedia:3438 Build failure with
`-DSANITIZE=address -DBUILD_SHARED_LIBS=ON` when using clang.
* aomedia:3435 Block artifacts when scrolling with AV1 in screen sharing
scenarios
* aomedia:3170 vmaf tune presets produce extreme glitches in one scene
* aomedia:3401 Building shared libaom with MSVC results in a race condition
with the export library
* aomedia:3420 Floating point exception in av1_tpl_get_frame_importance()
* aomedia:3424 heap-buffer-overflow in ScaleFilterCols_16_C() (SIGABRT)
* aomedia:3417 examples/svc_encoder_rtc.c is using internal macros and
functions
* aomedia:3372 SEGV in assign_frame_buffer_p av1_common_int.h
* aomedia:3130 'cpu-features.h' file not found on Android NDK 22
* aomedia:3415 Encoder/decoder mismatch for svc_encoder_rtc running
1 SL 3 TL
* aomedia:3412 Lossless Mode Fails Loopback Bit Test
* aomedia:3409 The use of AV1_VAR_OFFS in av1/encoder/var_based_part.c is
incorrect for high bit depths
* aomedia:3403 test_libaom fails with error message
"feenableexcept() failed" on Linux arm
* aomedia:3370 Random color block at fast motion area
* aomedia:3393 Assertion failure in av1_convolve_2d_sr_c()
* aomedia:3392 Strong artifacting for high bit-depth real-time
* aomedia:3376 aomenc --threads=10 --deltaq-mode=3 crashes after
"Allintra: multi-threading of calculating differential contrast"
* aomedia:3380 Crashes and ASan and TSan errors in deltaq-mode=3
multithreading code
* chromium:1410766 heap-buffer-overflow in aom_yv12_copy_v_c
* Cannot set level via AV1E_SET_TARGET_SEQ_LEVEL_IDX
* Encoding failure due to the use of loop restoration with unintended use of
lossless mode.
* Signed integer overflow in scan_past_frames
* Signed integer overflow in update_a_sep_sym
* Flickering in AV1 1440p/2160p HDR transcodes
* Fixed artifacts with screen share at encoder speed 10
* Fixed prediction setup for IDTX
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