ref: 9d93dabee008cbf568104f972e36d487b4c4e5de
parent: c4d7e5e67ecfcd9730bd512483390369fc9982db
parent: cad2164911eb48ec608cfddfb858821083c9e99b
author: John Koleszar <jkoleszar@google.com>
date: Thu Oct 28 12:01:03 EDT 2010
Merge branch 'aylesbury'
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,111 @@
+2010-10-28 v0.9.5 "Aylesbury"
+ Our first named release, focused on a faster decoder, and a better encoder.
+
+ - Upgrading:
+ This release incorporates backwards-incompatible changes to the
+ ivfenc and ivfdec tools. These tools are now called vpxenc and vpxdec.
+
+ vpxdec
+ * the -q (quiet) option has been removed, and replaced with
+ -v (verbose). the output is quiet by default. Use -v to see
+ the version number of the binary.
+
+ * The default behavior is now to write output to a single file
+ instead of individual frames. The -y option has been removed.
+ Y4M output is the default.
+
+ * For raw I420/YV12 output instead of Y4M, the --i420 or --yv12
+ options must be specified.
+
+ $ ivfdec -o OUTPUT INPUT
+ $ vpxdec --i420 -o OUTPUT INPUT
+
+ * If an output file is not specified, the default is to write
+ Y4M to stdout. This makes piping more natural.
+
+ $ ivfdec -y -o - INPUT | ...
+ $ vpxdec INPUT | ...
+
+ * The output file has additional flexibility for formatting the
+ filename. It supports escape characters for constructing a
+ filename from the width, height, and sequence number. This
+ replaces the -p option. To get the equivalent:
+
+ $ ivfdec -p frame INPUT
+ $ vpxdec --i420 -o frame-%wx%h-%4.i420 INPUT
+
+ vpxenc
+ * The output file must be specified with -o, rather than as the
+ last argument.
+
+ $ ivfenc <options> INPUT OUTPUT
+ $ vpxenc <options> -o OUTPUT INPUT
+
+ * The output defaults to webm. To get IVF output, use the --ivf
+ option.
+
+ $ ivfenc <options> INPUT OUTPUT.ivf
+ $ vpxenc <options> -o OUTPUT.ivf --ivf INPUT
+
+
+ - Enhancements:
+ ivfenc and ivfdec have been renamed to vpxenc, vpxdec.
+ vpxdec supports .webm input
+ vpxdec writes .y4m by default
+ vpxenc writes .webm output by default
+ vpxenc --psnr now shows the average/overall PSNR at the end
+ ARM platforms now support runtime cpu detection
+ vpxdec visualizations added for motion vectors, block modes, references
+ vpxdec now silent by default
+ vpxdec --progress shows frame-by-frame timing information
+ vpxenc supports the distinction between --fps and --timebase
+ NASM is now a supported assembler
+ configure: enable PIC for shared libs by default
+ configure: add --enable-small
+ configure: support for ppc32-linux-gcc
+ configure: support for sparc-solaris-gcc
+
+ - Bugs:
+ Improve handling of invalid frames
+ Fix valgrind errors in the NEON loop filters.
+ Fix loopfilter delta zero transitions
+ Fix valgrind errors in vp8_sixtap_predict8x4_armv6().
+ Build fixes for darwin-icc
+
+ - Speed:
+ 20-40% (average 28%) improvement in libvpx decoder speed,
+ including:
+ Rewrite vp8_short_walsh4x4_sse2()
+ Optimizations on the loopfilters.
+ Miscellaneous improvements for Atom
+ Add 4-tap version of 2nd-pass ARMv6 MC filter.
+ Improved multithread utilization
+ Better instruction choices on x86
+ reorder data to use wider instructions
+ Update NEON wide idcts
+ Make block access to frame buffer sequential
+ Improved subset block search
+ Bilinear subpixel optimizations for ssse3.
+ Decrease memory footprint
+
+ Encoder speed improvements (percentage gain not measured):
+ Skip unnecessary search of identical frames
+ Add SSE2 subtract functions
+ Improve bounds checking in vp8_diamond_search_sadx4()
+ Added vp8_fast_quantize_b_sse2
+
+ - Quality:
+ Over 7% overall PSNR improvement (6.3% SSIM) in "best" quality
+ encoding mode, and up to 60% improvement on very noisy, still
+ or slow moving source video
+
+ Motion compensated temporal filter for Alt-Ref Noise Reduction
+ Improved use of trellis quantization on 2nd order Y blocks
+ Tune effect of motion on KF/GF boost in two pass
+ Allow coefficient optimization for good quality speed 0.
+ Improved control of active min quantizer for two pass.
+ Enable ARFs for non-lagged compress
+
2010-09-02 v0.9.2
- Enhancements:
Disable frame dropping by default