2021-09-27 v1.11.0 "Smew Duck" This maintenance release adds support for VBR mode in VP9 rate control interface, new codec controls to get quantization parameters and loop filter levels, and includes several improvements to NEON and numerous bug fixes. - Upgrading: New codec control is added to get quantization parameters and loop filter levels. VBR mode is supported in VP9 rate control library. - Enhancement: Numerous improvements for Neon optimizations. Code clean-up and refactoring. Calculation of rd multiplier is changed with BDRATE gains. - Bug fixes: Fix to overflow on duration. Fix to several instances of -Wunused-but-set-variable. Fix to avoid chroma resampling for 420mpeg2 input. Fix to overflow in calc_iframe_target_size. Fix to disallow skipping transform and quantization. Fix some -Wsign-compare warnings in simple_encode. Fix input file path in simple_encode_test. Fix valid range for under/over_shoot pct. 2021-03-09 v1.10.0 "Ruddy Duck" This maintenance release adds support for darwin20 and new codec controls, as well as numerous bug fixes. - Upgrading: New codec control is added to disable loopfilter for VP9. New encoder control is added to disable feature to increase Q on overshoot detection for CBR. Configure support for darwin20 is added. New codec control is added for VP9 rate control. The control ID of this interface is VP9E_SET_EXTERNAL_RATE_CONTROL. To make VP9 use a customized external rate control model, users will have to implement each callback function in vpx_rc_funcs_t and register them using libvpx API vpx_codec_control_() with the control ID. - Enhancement: Use -std=gnu++11 instead of -std=c++11 for c++ files. - Bug fixes: Override assembler with --as option of configure for MSVS. Fix several compilation issues with gcc 4.8.5. Fix to resetting rate control for temporal layers. Fix to the rate control stats of SVC example encoder when number of spatial layers is 1. Fix to reusing motion vectors from the base spatial layer in SVC. 2 pass related flags removed from SVC example encoder. 2020-07-29 v1.9.0 "Quacking Duck" This release adds support for NV12, a separate library for rate control, as well as incremental improvements. - Upgrading: NV12 support is added to this release. A new interface is added for VP9 rate control. The new library libvp9rc.a must be linked by applications. Googletest is updated to v1.10.0. simple_encode.cc is compiled into a new library libsimple_encode.a with CONFIG_RATE_CTRL. - Enhancement: Various changes to improve VP9 SVC, rate control, quality and speed to real time encoding. - Bug fixes: Fix key frame update refresh simulcast flexible svc. Fix to disable_16x16part speed feature for real time encoding. Fix some signed integer overflows for VP9 rate control. Fix initialization of delta_q_uv. Fix condition in regulate_q for cyclic refresh. Various fixes to dynamic resizing for VP9 SVC. 2019-12-09 v1.8.2 "Pekin Duck" This release collects incremental improvements to many aspects of the library. - Upgrading: ARCH_* defines have been removed in favor of VPX_ARCH_*. 2019-07-15 v1.8.1 "Orpington Duck" This release collects incremental improvements to many aspects of the library. - Upgrading: VP8E_SET_CPUUSED now accepts values up to 9 for vp9. VPX_CTRL_VP9E_SET_MAX_INTER_BITRATE_PCT had a spelling fix (was VP8E). The --sdk-path option has been removed. If you were using it to build for Android please read build/make/Android.mk for alternatives. All PPC optimizations have been disabled: https://bugs.chromium.org/p/webm/issues/detail?id=1522. - Enhancements: Various changes to improve encoder rate control, quality and speed for practically every use case. - Bug fixes: vp9-rtc: Fix color artifacts for speed >= 8. 2019-01-31 v1.8.0 "Northern Shoveler Duck" This release focused on encoding performance for realtime and VOD use cases. - Upgrading: This adds and improves several vp9 controls. Most are related to SVC: VP9E_SET_SVC_FRAME_DROP_LAYER: - Frame dropping in SVC. VP9E_SET_SVC_INTER_LAYER_PRED: - Inter-layer prediction in SVC. VP9E_SET_SVC_GF_TEMPORAL_REF: - Enable long term temporal reference in SVC. VP9E_SET_SVC_REF_FRAME_CONFIG/VP9E_GET_SVC_REF_FRAME_CONFIG: - Extend and improve this control for better flexibility in setting SVC pattern dynamically. VP9E_SET_POSTENCODE_DROP: - Allow for post-encode frame dropping (applies to non-SVC too). VP9E_SET_SVC_SPATIAL_LAYER_SYNC: - Enable spatial layer sync frames. VP9E_SET_SVC_LAYER_ID: - Extend api to specify temporal id for each spatial layers. VP9E_SET_ROI_MAP: - Extend Region of Interest functionality to VP9. - Enhancements: 2 pass vp9 encoding has improved substantially. When using --auto-alt-ref=6, we see approximately 8% for VBR and 10% for CQ. When using --auto-alt-ref=1, the gains are approximately 4% for VBR and 5% for CQ. For real-time encoding, speed 7 has improved by ~5-10%. Encodes targeted at screen sharing have improved when the content changes significantly (slide sharing) or scrolls. There is a new speed 9 setting for mobile devices which is about 10-20% faster than speed 8. - Bug fixes: VP9 denoiser issue. VP9 partition issue for 1080p. VP9 rate control improvments. Postprocessing Multi Frame Quality Enhancement (MFQE) issue. VP8 multithread decoder issues. A variety of fuzzing issues. 2018-01-04 v1.7.0 "Mandarin Duck" This release focused on high bit depth performance (10/12 bit) and vp9 encoding improvements. - Upgrading: This release is ABI incompatible due to new vp9 encoder features. Frame parallel decoding for vp9 has been removed. - Enhancements: vp9 encoding supports additional threads with --row-mt. This can be greater than the number of tiles. Two new vp9 encoder options have been added: --corpus-complexity --tune-content=film Additional tooling for respecting the vp9 "level" profiles has been added. - Bug fixes: A variety of fuzzing issues. vp8 threading fix for ARM. Codec control VP9_SET_SKIP_LOOP_FILTER fixed. Reject invalid multi resolution configurations. 2017-01-09 v1.6.1 "Long Tailed Duck" This release improves upon the VP9 encoder and speeds up the encoding and decoding processes. - Upgrading: This release is ABI compatible with 1.6.0. - Enhancements: Faster VP9 encoding and decoding. High bit depth builds now provide similar speed for 8 bit encode and decode for x86 targets. Other platforms and higher bit depth improvements are in progress. - Bug Fixes: A variety of fuzzing issues. 2016-07-20 v1.6.0 "Khaki Campbell Duck" This release improves upon the VP9 encoder and speeds up the encoding and decoding processes. - Upgrading: This release is ABI incompatible with 1.5.0 due to a new 'color_range' enum in vpx_image and some minor changes to the VP8_COMP structure. The default key frame interval for VP9 has changed from 128 to 9999. - Enhancement: A core focus has been performance for low end Intel processors. SSSE3 instructions such as 'pshufb' have been avoided and instructions have been reordered to better accommodate the more constrained pipelines. As a result, devices based on Celeron processors have seen substantial decoding improvements. From Indian Runner Duck to Javan Whistling Duck, decoding speed improved between 10 and 30%. Between Javan Whistling Duck and Khaki Campbell Duck, it improved another 10 to 15%. While Celeron benefited most, Core-i5 also improved 5% and 10% between the respective releases. Realtime performance for WebRTC for both speed and quality has received a lot of attention. - Bug Fixes: A number of fuzzing issues, found variously by Mozilla, Chromium and others, have been fixed and we strongly recommend updating. 2015-11-09 v1.5.0 "Javan Whistling Duck" This release improves upon the VP9 encoder and speeds up the encoding and decoding processes. - Upgrading: This release is ABI incompatible with 1.4.0. It drops deprecated VP8 controls and adds a variety of VP9 controls for testing. The vpxenc utility now prefers VP9 by default. - Enhancements: Faster VP9 encoding and decoding Smaller library size by combining functions used by VP8 and VP9 - Bug Fixes: A variety of fuzzing issues 2015-04-03 v1.4.0 "Indian Runner Duck" This release includes significant improvements to the VP9 codec. - Upgrading: This release is ABI incompatible with 1.3.0. It drops the compatibility layer, requiring VPX_IMG_FMT_* instead of IMG_FMT_*, and adds several codec controls for VP9. - Enhancements: Faster VP9 encoding and decoding Multithreaded VP9 decoding (tile and frame-based) Multithreaded VP9 encoding - on by default YUV 4:2:2 and 4:4:4 support in VP9 10 and 12bit support in VP9 64bit ARM support by replacing ARM assembly with intrinsics - Bug Fixes: Fixes a VP9 bitstream issue in Profile 1. This only affected non-YUV 4:2:0 files. - Known Issues: Frame Parallel decoding fails for segmented and non-420 files. 2013-11-15 v1.3.0 "Forest" This release introduces the VP9 codec in a backward-compatible way. All existing users of VP8 can continue to use the library without modification. However, some VP8 options do not map to VP9 in the same manner. The VP9 encoder in this release is not feature complete. Users interested in the encoder are advised to use the git master branch and discuss issues on libvpx mailing lists. - Upgrading: This release is ABI and API compatible with Duclair (v1.0.0). Users of older releases should refer to the Upgrading notes in this document for that release. - Enhancements: Get rid of bashisms in the main build scripts Added usage info on command line options Add lossless compression mode Dll build of libvpx Add additional Mac OS X targets: 10.7, 10.8 and 10.9 (darwin11-13) Add option to disable documentation configure: add --enable-external-build support make: support V=1 as short form of verbose=yes configure: support mingw-w64 configure: support hardfloat armv7 CHOSTS configure: add support for android x86 Add estimated completion time to vpxenc Don't exit on decode errors in vpxenc vpxenc: support scaling prior to encoding vpxdec: support scaling output vpxenc: improve progress indicators with --skip msvs: Don't link to winmm.lib Add a new script for producing vcxproj files Produce Visual Studio 10 and 11 project files Produce Windows Phone project files msvs-build: use msbuild for vs >= 2005 configure: default configure log to config.log Add encoding option --static-thresh - Speed: Miscellaneous speed optimizations for VP8 and VP9. - Quality: In general, quality is consistent with the Eider release. - Bug Fixes: This release represents approximately a year of engineering effort, and contains multiple bug fixes. Please refer to git history for details. 2012-12-21 v1.2.0 This release acts as a checkpoint for a large amount of internal refactoring and testing. It also contains a number of small bugfixes, so all users are encouraged to upgrade. - Upgrading: This release is ABI and API compatible with Duclair (v1.0.0). Users of older releases should refer to the Upgrading notes in this document for that release. - Enhancements: VP8 optimizations for MIPS dspr2 vpxenc: add -quiet option - Speed: Encoder and decoder speed is consistent with the Eider release. - Quality: In general, quality is consistent with the Eider release. Minor tweaks to ARNR filtering Minor improvements to real time encoding with multiple temporal layers - Bug Fixes: Fixes multithreaded encoder race condition in loopfilter Fixes multi-resolution threaded encoding Fix potential encoder dead-lock after picture resize 2012-05-09 v1.1.0 "Eider" This introduces a number of enhancements, mostly focused on real-time encoding. In addition, it fixes a decoder bug (first introduced in Duclair) so all users of that release are encouraged to upgrade. - Upgrading: This release is ABI and API compatible with Duclair (v1.0.0). Users of older releases should refer to the Upgrading notes in this document for that release. This release introduces a new temporal denoiser, controlled by the VP8E_SET_NOISE_SENSITIVITY control. The temporal denoiser does not currently take a strength parameter, so the control is effectively a boolean - zero (off) or non-zero (on). For compatibility with existing applications, the values accepted are the same as those for the spatial denoiser (0-6). The temporal denoiser is enabled by default, and the older spatial denoiser may be restored by configuring with --disable-temporal-denoising. The temporal denoiser is more computationally intensive than the spatial one. This release removes support for a legacy, decode only API that was supported, but deprecated, at the initial release of libvpx (v0.9.0). This is not expected to have any impact. If you are impacted, you can apply a reversion to commit 2bf8fb58 locally. Please update to the latest libvpx API if you are affected. - Enhancements: Adds a motion compensated temporal denoiser to the encoder, which gives higher quality than the older spatial denoiser. (See above for notes on upgrading). In addition, support for new compilers and platforms were added, including: improved support for XCode Android x86 NDK build OS/2 support SunCC support Changing resolution with vpx_codec_enc_config_set() is now supported. Previously, reinitializing the codec was required to change the input resolution. The vpxenc application has initial support for producing multiple encodes from the same input in one call. Resizing is not yet supported, but varying other codec parameters is. Use -- to delineate output streams. Options persist from one stream to the next. Also, the vpxenc application will now use a keyframe interval of 5 seconds by default. Use the --kf-max-dist option to override. - Speed: Decoder performance improved 2.5% versus Duclair. Encoder speed is consistent with Duclair for most material. Two pass encoding of slideshow-like material will see significant improvements. Large realtime encoding speed gains at a small quality expense are possible by configuring the on-the-fly bitpacking experiment with --enable-onthefly-bitpacking. Realtime encoder can be up to 13% faster (ARM) depending on the number of threads and bitrate settings. This technique sees constant gain over the 5-16 speed range. For VC style input the loss seen is up to 0.2dB. See commit 52cf4dca for further details. - Quality: On the whole, quality is consistent with the Duclair release. Some tweaks: Reduced blockiness in easy sections by applying a penalty to intra modes. Improved quality of static sections (like slideshows) with two pass encoding. Improved keyframe sizing with multiple temporal layers - Bug Fixes: Corrected alt-ref contribution to frame rate for visible updates to the alt-ref buffer. This affected applications making manual usage of the frame reference flags, or temporal layers. Additional constraints were added to disable multi-frame quality enhancement (MFQE) in sections of the frame where there is motion. (#392) Fixed corruption issues when vpx_codec_enc_config_set() was called with spatial resampling enabled. Fixed a decoder error introduced in Duclair where the segmentation map was not being reinitialized on keyframes (#378) 2012-01-27 v1.0.0 "Duclair" Our fourth named release, focused on performance and features related to real-time encoding. It also fixes a decoder crash bug introduced in v0.9.7, so all users of that release are encouraged to upgrade. - Upgrading: This release is ABI incompatible with prior releases of libvpx, so the "major" version number has been bumped to 1. You must recompile your applications against the latest version of the libvpx headers. The API remains compatible, and this should not require code changes in most applications. - Enhancements: This release introduces several substantial new features to the encoder, of particular interest to real time streaming applications. Temporal scalability allows the encoder to produce a stream that can be decimated to different frame rates, with independent rate targeting for each substream. Multiframe quality enhancement postprocessing can make visual quality more consistent in the presence of frames that are substantially different quality than the surrounding frames, as in the temporal scalability case and in some forced keyframe scenarios. Multiple-resolution encoding support allows the encoding of the same content at different resolutions faster than encoding them separately. - Speed: Optimization targets for this release included the decoder and the real- time modes of the encoder. Decoder speed on x86 has improved 10.5% with this release. Encoder improvements followed a curve where speeds 1-3 improved 4.0%-1.5%, speeds 4-8 improved <1%, and speeds 9-16 improved 1.5% to 10.5%, respectively. "Best" mode speed is consistent with the Cayuga release. - Quality: Encoder quality in the single stream case is consistent with the Cayuga release. - Bug Fixes: This release fixes an OOB read decoder crash bug present in v0.9.7 related to the clamping of motion vectors in SPLITMV blocks. This behavior could be triggered by corrupt input or by starting decoding from a P-frame. 2011-08-15 v0.9.7-p1 "Cayuga" patch 1 This is an incremental bugfix release against Cayuga. All users of that release are strongly encouraged to upgrade. - Fix potential OOB reads (cdae03a) An unbounded out of bounds read was discovered when the decoder was requested to perform error concealment (new in Cayuga) given a frame with corrupt partition sizes. A bounded out of bounds read was discovered affecting all versions of libvpx. Given an multipartition input frame that is truncated between the mode/mv partition and the first residiual paritition (in the block of partition offsets), up to 3 extra bytes could have been read from the source buffer. The code will not take any action regardless of the contents of these undefined bytes, as the truncated buffer is detected immediately following the read based on the calculated starting position of the coefficient partition. - Fix potential error concealment crash when the very first frame is missing or corrupt (a609be5) - Fix significant artifacts in error concealment (a4c2211, 99d870a) Lines 1–500 of 840. Load more
2021-09-27 v1.11.0 "Smew Duck" This maintenance release adds support for VBR mode in VP9 rate control interface, new codec controls to get quantization parameters and loop filter levels, and includes several improvements to NEON and numerous bug fixes. - Upgrading: New codec control is added to get quantization parameters and loop filter levels. VBR mode is supported in VP9 rate control library. - Enhancement: Numerous improvements for Neon optimizations. Code clean-up and refactoring. Calculation of rd multiplier is changed with BDRATE gains. - Bug fixes: Fix to overflow on duration. Fix to several instances of -Wunused-but-set-variable. Fix to avoid chroma resampling for 420mpeg2 input. Fix to overflow in calc_iframe_target_size. Fix to disallow skipping transform and quantization. Fix some -Wsign-compare warnings in simple_encode. Fix input file path in simple_encode_test. Fix valid range for under/over_shoot pct. 2021-03-09 v1.10.0 "Ruddy Duck" This maintenance release adds support for darwin20 and new codec controls, as well as numerous bug fixes. - Upgrading: New codec control is added to disable loopfilter for VP9. New encoder control is added to disable feature to increase Q on overshoot detection for CBR. Configure support for darwin20 is added. New codec control is added for VP9 rate control. The control ID of this interface is VP9E_SET_EXTERNAL_RATE_CONTROL. To make VP9 use a customized external rate control model, users will have to implement each callback function in vpx_rc_funcs_t and register them using libvpx API vpx_codec_control_() with the control ID. - Enhancement: Use -std=gnu++11 instead of -std=c++11 for c++ files. - Bug fixes: Override assembler with --as option of configure for MSVS. Fix several compilation issues with gcc 4.8.5. Fix to resetting rate control for temporal layers. Fix to the rate control stats of SVC example encoder when number of spatial layers is 1. Fix to reusing motion vectors from the base spatial layer in SVC. 2 pass related flags removed from SVC example encoder. 2020-07-29 v1.9.0 "Quacking Duck" This release adds support for NV12, a separate library for rate control, as well as incremental improvements. - Upgrading: NV12 support is added to this release. A new interface is added for VP9 rate control. The new library libvp9rc.a must be linked by applications. Googletest is updated to v1.10.0. simple_encode.cc is compiled into a new library libsimple_encode.a with CONFIG_RATE_CTRL. - Enhancement: Various changes to improve VP9 SVC, rate control, quality and speed to real time encoding. - Bug fixes: Fix key frame update refresh simulcast flexible svc. Fix to disable_16x16part speed feature for real time encoding. Fix some signed integer overflows for VP9 rate control. Fix initialization of delta_q_uv. Fix condition in regulate_q for cyclic refresh. Various fixes to dynamic resizing for VP9 SVC. 2019-12-09 v1.8.2 "Pekin Duck" This release collects incremental improvements to many aspects of the library. - Upgrading: ARCH_* defines have been removed in favor of VPX_ARCH_*. 2019-07-15 v1.8.1 "Orpington Duck" This release collects incremental improvements to many aspects of the library. - Upgrading: VP8E_SET_CPUUSED now accepts values up to 9 for vp9. VPX_CTRL_VP9E_SET_MAX_INTER_BITRATE_PCT had a spelling fix (was VP8E). The --sdk-path option has been removed. If you were using it to build for Android please read build/make/Android.mk for alternatives. All PPC optimizations have been disabled: https://bugs.chromium.org/p/webm/issues/detail?id=1522. - Enhancements: Various changes to improve encoder rate control, quality and speed for practically every use case. - Bug fixes: vp9-rtc: Fix color artifacts for speed >= 8. 2019-01-31 v1.8.0 "Northern Shoveler Duck" This release focused on encoding performance for realtime and VOD use cases. - Upgrading: This adds and improves several vp9 controls. Most are related to SVC: VP9E_SET_SVC_FRAME_DROP_LAYER: - Frame dropping in SVC. VP9E_SET_SVC_INTER_LAYER_PRED: - Inter-layer prediction in SVC. VP9E_SET_SVC_GF_TEMPORAL_REF: - Enable long term temporal reference in SVC. VP9E_SET_SVC_REF_FRAME_CONFIG/VP9E_GET_SVC_REF_FRAME_CONFIG: - Extend and improve this control for better flexibility in setting SVC pattern dynamically. VP9E_SET_POSTENCODE_DROP: - Allow for post-encode frame dropping (applies to non-SVC too). VP9E_SET_SVC_SPATIAL_LAYER_SYNC: - Enable spatial layer sync frames. VP9E_SET_SVC_LAYER_ID: - Extend api to specify temporal id for each spatial layers. VP9E_SET_ROI_MAP: - Extend Region of Interest functionality to VP9. - Enhancements: 2 pass vp9 encoding has improved substantially. When using --auto-alt-ref=6, we see approximately 8% for VBR and 10% for CQ. When using --auto-alt-ref=1, the gains are approximately 4% for VBR and 5% for CQ. For real-time encoding, speed 7 has improved by ~5-10%. Encodes targeted at screen sharing have improved when the content changes significantly (slide sharing) or scrolls. There is a new speed 9 setting for mobile devices which is about 10-20% faster than speed 8. - Bug fixes: VP9 denoiser issue. VP9 partition issue for 1080p. VP9 rate control improvments. Postprocessing Multi Frame Quality Enhancement (MFQE) issue. VP8 multithread decoder issues. A variety of fuzzing issues. 2018-01-04 v1.7.0 "Mandarin Duck" This release focused on high bit depth performance (10/12 bit) and vp9 encoding improvements. - Upgrading: This release is ABI incompatible due to new vp9 encoder features. Frame parallel decoding for vp9 has been removed. - Enhancements: vp9 encoding supports additional threads with --row-mt. This can be greater than the number of tiles. Two new vp9 encoder options have been added: --corpus-complexity --tune-content=film Additional tooling for respecting the vp9 "level" profiles has been added. - Bug fixes: A variety of fuzzing issues. vp8 threading fix for ARM. Codec control VP9_SET_SKIP_LOOP_FILTER fixed. Reject invalid multi resolution configurations. 2017-01-09 v1.6.1 "Long Tailed Duck" This release improves upon the VP9 encoder and speeds up the encoding and decoding processes. - Upgrading: This release is ABI compatible with 1.6.0. - Enhancements: Faster VP9 encoding and decoding. High bit depth builds now provide similar speed for 8 bit encode and decode for x86 targets. Other platforms and higher bit depth improvements are in progress. - Bug Fixes: A variety of fuzzing issues. 2016-07-20 v1.6.0 "Khaki Campbell Duck" This release improves upon the VP9 encoder and speeds up the encoding and decoding processes. - Upgrading: This release is ABI incompatible with 1.5.0 due to a new 'color_range' enum in vpx_image and some minor changes to the VP8_COMP structure. The default key frame interval for VP9 has changed from 128 to 9999. - Enhancement: A core focus has been performance for low end Intel processors. SSSE3 instructions such as 'pshufb' have been avoided and instructions have been reordered to better accommodate the more constrained pipelines. As a result, devices based on Celeron processors have seen substantial decoding improvements. From Indian Runner Duck to Javan Whistling Duck, decoding speed improved between 10 and 30%. Between Javan Whistling Duck and Khaki Campbell Duck, it improved another 10 to 15%. While Celeron benefited most, Core-i5 also improved 5% and 10% between the respective releases. Realtime performance for WebRTC for both speed and quality has received a lot of attention. - Bug Fixes: A number of fuzzing issues, found variously by Mozilla, Chromium and others, have been fixed and we strongly recommend updating. 2015-11-09 v1.5.0 "Javan Whistling Duck" This release improves upon the VP9 encoder and speeds up the encoding and decoding processes. - Upgrading: This release is ABI incompatible with 1.4.0. It drops deprecated VP8 controls and adds a variety of VP9 controls for testing. The vpxenc utility now prefers VP9 by default. - Enhancements: Faster VP9 encoding and decoding Smaller library size by combining functions used by VP8 and VP9 - Bug Fixes: A variety of fuzzing issues 2015-04-03 v1.4.0 "Indian Runner Duck" This release includes significant improvements to the VP9 codec. - Upgrading: This release is ABI incompatible with 1.3.0. It drops the compatibility layer, requiring VPX_IMG_FMT_* instead of IMG_FMT_*, and adds several codec controls for VP9. - Enhancements: Faster VP9 encoding and decoding Multithreaded VP9 decoding (tile and frame-based) Multithreaded VP9 encoding - on by default YUV 4:2:2 and 4:4:4 support in VP9 10 and 12bit support in VP9 64bit ARM support by replacing ARM assembly with intrinsics - Bug Fixes: Fixes a VP9 bitstream issue in Profile 1. This only affected non-YUV 4:2:0 files. - Known Issues: Frame Parallel decoding fails for segmented and non-420 files. 2013-11-15 v1.3.0 "Forest" This release introduces the VP9 codec in a backward-compatible way. All existing users of VP8 can continue to use the library without modification. However, some VP8 options do not map to VP9 in the same manner. The VP9 encoder in this release is not feature complete. Users interested in the encoder are advised to use the git master branch and discuss issues on libvpx mailing lists. - Upgrading: This release is ABI and API compatible with Duclair (v1.0.0). Users of older releases should refer to the Upgrading notes in this document for that release. - Enhancements: Get rid of bashisms in the main build scripts Added usage info on command line options Add lossless compression mode Dll build of libvpx Add additional Mac OS X targets: 10.7, 10.8 and 10.9 (darwin11-13) Add option to disable documentation configure: add --enable-external-build support make: support V=1 as short form of verbose=yes configure: support mingw-w64 configure: support hardfloat armv7 CHOSTS configure: add support for android x86 Add estimated completion time to vpxenc Don't exit on decode errors in vpxenc vpxenc: support scaling prior to encoding vpxdec: support scaling output vpxenc: improve progress indicators with --skip msvs: Don't link to winmm.lib Add a new script for producing vcxproj files Produce Visual Studio 10 and 11 project files Produce Windows Phone project files msvs-build: use msbuild for vs >= 2005 configure: default configure log to config.log Add encoding option --static-thresh - Speed: Miscellaneous speed optimizations for VP8 and VP9. - Quality: In general, quality is consistent with the Eider release. - Bug Fixes: This release represents approximately a year of engineering effort, and contains multiple bug fixes. Please refer to git history for details. 2012-12-21 v1.2.0 This release acts as a checkpoint for a large amount of internal refactoring and testing. It also contains a number of small bugfixes, so all users are encouraged to upgrade. - Upgrading: This release is ABI and API compatible with Duclair (v1.0.0). Users of older releases should refer to the Upgrading notes in this document for that release. - Enhancements: VP8 optimizations for MIPS dspr2 vpxenc: add -quiet option - Speed: Encoder and decoder speed is consistent with the Eider release. - Quality: In general, quality is consistent with the Eider release. Minor tweaks to ARNR filtering Minor improvements to real time encoding with multiple temporal layers - Bug Fixes: Fixes multithreaded encoder race condition in loopfilter Fixes multi-resolution threaded encoding Fix potential encoder dead-lock after picture resize 2012-05-09 v1.1.0 "Eider" This introduces a number of enhancements, mostly focused on real-time encoding. In addition, it fixes a decoder bug (first introduced in Duclair) so all users of that release are encouraged to upgrade. - Upgrading: This release is ABI and API compatible with Duclair (v1.0.0). Users of older releases should refer to the Upgrading notes in this document for that release. This release introduces a new temporal denoiser, controlled by the VP8E_SET_NOISE_SENSITIVITY control. The temporal denoiser does not currently take a strength parameter, so the control is effectively a boolean - zero (off) or non-zero (on). For compatibility with existing applications, the values accepted are the same as those for the spatial denoiser (0-6). The temporal denoiser is enabled by default, and the older spatial denoiser may be restored by configuring with --disable-temporal-denoising. The temporal denoiser is more computationally intensive than the spatial one. This release removes support for a legacy, decode only API that was supported, but deprecated, at the initial release of libvpx (v0.9.0). This is not expected to have any impact. If you are impacted, you can apply a reversion to commit 2bf8fb58 locally. Please update to the latest libvpx API if you are affected. - Enhancements: Adds a motion compensated temporal denoiser to the encoder, which gives higher quality than the older spatial denoiser. (See above for notes on upgrading). In addition, support for new compilers and platforms were added, including: improved support for XCode Android x86 NDK build OS/2 support SunCC support Changing resolution with vpx_codec_enc_config_set() is now supported. Previously, reinitializing the codec was required to change the input resolution. The vpxenc application has initial support for producing multiple encodes from the same input in one call. Resizing is not yet supported, but varying other codec parameters is. Use -- to delineate output streams. Options persist from one stream to the next. Also, the vpxenc application will now use a keyframe interval of 5 seconds by default. Use the --kf-max-dist option to override. - Speed: Decoder performance improved 2.5% versus Duclair. Encoder speed is consistent with Duclair for most material. Two pass encoding of slideshow-like material will see significant improvements. Large realtime encoding speed gains at a small quality expense are possible by configuring the on-the-fly bitpacking experiment with --enable-onthefly-bitpacking. Realtime encoder can be up to 13% faster (ARM) depending on the number of threads and bitrate settings. This technique sees constant gain over the 5-16 speed range. For VC style input the loss seen is up to 0.2dB. See commit 52cf4dca for further details. - Quality: On the whole, quality is consistent with the Duclair release. Some tweaks: Reduced blockiness in easy sections by applying a penalty to intra modes. Improved quality of static sections (like slideshows) with two pass encoding. Improved keyframe sizing with multiple temporal layers - Bug Fixes: Corrected alt-ref contribution to frame rate for visible updates to the alt-ref buffer. This affected applications making manual usage of the frame reference flags, or temporal layers. Additional constraints were added to disable multi-frame quality enhancement (MFQE) in sections of the frame where there is motion. (#392) Fixed corruption issues when vpx_codec_enc_config_set() was called with spatial resampling enabled. Fixed a decoder error introduced in Duclair where the segmentation map was not being reinitialized on keyframes (#378) 2012-01-27 v1.0.0 "Duclair" Our fourth named release, focused on performance and features related to real-time encoding. It also fixes a decoder crash bug introduced in v0.9.7, so all users of that release are encouraged to upgrade. - Upgrading: This release is ABI incompatible with prior releases of libvpx, so the "major" version number has been bumped to 1. You must recompile your applications against the latest version of the libvpx headers. The API remains compatible, and this should not require code changes in most applications. - Enhancements: This release introduces several substantial new features to the encoder, of particular interest to real time streaming applications. Temporal scalability allows the encoder to produce a stream that can be decimated to different frame rates, with independent rate targeting for each substream. Multiframe quality enhancement postprocessing can make visual quality more consistent in the presence of frames that are substantially different quality than the surrounding frames, as in the temporal scalability case and in some forced keyframe scenarios. Multiple-resolution encoding support allows the encoding of the same content at different resolutions faster than encoding them separately. - Speed: Optimization targets for this release included the decoder and the real- time modes of the encoder. Decoder speed on x86 has improved 10.5% with this release. Encoder improvements followed a curve where speeds 1-3 improved 4.0%-1.5%, speeds 4-8 improved <1%, and speeds 9-16 improved 1.5% to 10.5%, respectively. "Best" mode speed is consistent with the Cayuga release. - Quality: Encoder quality in the single stream case is consistent with the Cayuga release. - Bug Fixes: This release fixes an OOB read decoder crash bug present in v0.9.7 related to the clamping of motion vectors in SPLITMV blocks. This behavior could be triggered by corrupt input or by starting decoding from a P-frame. 2011-08-15 v0.9.7-p1 "Cayuga" patch 1 This is an incremental bugfix release against Cayuga. All users of that release are strongly encouraged to upgrade. - Fix potential OOB reads (cdae03a) An unbounded out of bounds read was discovered when the decoder was requested to perform error concealment (new in Cayuga) given a frame with corrupt partition sizes. A bounded out of bounds read was discovered affecting all versions of libvpx. Given an multipartition input frame that is truncated between the mode/mv partition and the first residiual paritition (in the block of partition offsets), up to 3 extra bytes could have been read from the source buffer. The code will not take any action regardless of the contents of these undefined bytes, as the truncated buffer is detected immediately following the read based on the calculated starting position of the coefficient partition. - Fix potential error concealment crash when the very first frame is missing or corrupt (a609be5) - Fix significant artifacts in error concealment (a4c2211, 99d870a)