+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.