+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