Update CHANGELOG for v1.1.0 (Eider) release
Change-Id: Ic429556e76bcc4f96a34e18835a153b07fe410a2
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-NOTE FOR NEXT RELEASE: PLEASE DOCUMENT API CHANGE TO NOISE SENSITIVITY FEATURE
-AND WARN PEOPLE THAT FOR NOW IT'S EITHER ON OR OFF
+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
