Update CHANGELOG for libaom 3.8.0
Bug: aomedia:3515
Change-Id: I4229073c25879d9f562ae7f2acbb316f9791bb3d
diff --git a/CHANGELOG b/CHANGELOG
index 5cd6634..9f0cabb 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,4 +1,4 @@
-2023-11-23 v3.8.0
+2023-11-30 v3.8.0
This release includes new codec interfaces, compression efficiency and
perceptual improvements, speedup and memory optimizations and many bug
fixes. This release is ABI compatible with the last release.
@@ -12,13 +12,45 @@
CRC, DotProd, I8MM and SVE CPU feature presence is detected at run
time and code paths making use of these features are selected
dynamically. These code paths provide meaningful performance gains
- for standard bitdepth live-stream and VoD encoding: up to 10% and
- 20% respectively, over the Armv8.0-A baseline build.
+ for standard bitdepth RTC and VoD encoding: up to 10% and 20%
+ respectively, over the Armv8.0-A baseline build.
+ * RTC: Frame-dropper support added to the rate control library.
+ * RTC Rate control improvements for low bitrate and for SVC.
+
+ - Compression Efficiency Improvements
+ * Improved accuracy of cost estimation for loop restoration and
+ global motion.
+ * Improved selection of loop restoration unit size - full search up
+ to (non-realtime) speed 2, retuned static selection at higher
+ speeds.
+ * RTC Screen content mode: 3-5% bdrate gains across speeds 7 - 10.
+ * Good-quality mode: 0.2 - 0.5% bdrate gains across speeds 1 - 4.
+
+ - Perceptual Quality Improvements
+ * RTC Screen: Improved visual quality for scrolling.
+ * RTC: Improved color quality for both screen and video mode.
- Speedup and Memory Optimizations
* Good-quality, single-thread encoder speedups:
- o 15% improvement for speed 5
- o 12% improvement for speed 6
+ o 15% improvement for speed 5.
+ o 12% improvement for speed 6.
+ * Arm standard bitdepth VoD (--good):
+ o 8% speedup for speeds 0 and 1.
+ o 20% speedup for speed 2.
+ o 27% speedup for speed 3.
+ o 30% speedup for speed 4.
+ o 38% speedup for speeds 5 and 6.
+ * Arm high bitdepth VoD (--good):
+ o 206% speedup for speeds 0 and 1.
+ o 180% speedup for speed 2.
+ o 51% speedup for speeds 3 and 4.
+ o 68% speedup for speed 5.
+ o 72% speedup for speed 6.
+ * RTC Screen content: 2-6% speedup across speeds 7-10.
+ * RTC: 2-3% speedup for temporal layers.
+ * RTC: Speedups to reference scaling in nonrd pickmode.
+ * Good-quality mode: Simplified global motion estimation, saving
+ ~1200 lines of code and 1KB of tables while improving quality.
- Bug Fixes
* Fixes to improve libaom stability in case of memory allocation
