+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.
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 targetting
+ be decimated to different frame rates, with independent rate targeting
for each substream.
Multiframe quality enhancement postprocessing can make visual quality
projects / libvpx / blobdiff