1 2010-09-02 v0.9.2 2 - Enhancements: 3 Disable frame dropping by default 4 Improved multithreaded performance 5 Improved Force Key Frame Behaviour 6 Increased rate control buffer level precision 7 Fix bug in 1st pass motion compensation 8 ivfenc: correct fixed kf interval, --disable-kf 9 - Speed: 10 Changed above and left context data layout 11 Rework idct calling structure. 12 Removed unnecessary MB_MODE_INFO copies 13 x86: SSSE3 sixtap prediction 14 Reworked IDCT to include reconstruction (add) step 15 Swap alt/gold/new/last frame buffer ptrs instead of copying. 16 Improve SSE2 loopfilter functions 17 Change bitreader to use a larger window. 18 Avoid loopfilter reinitialization when possible 19 - Quality: 20 Normalize quantizer's zero bin and rounding factors 21 Add trellis quantization. 22 Make the quantizer exact. 23 Updates to ARNR filtering algorithm 24 Fix breakout thresh computation for golden & AltRef frames 25 Redo the forward 4x4 dct 26 Improve the accuracy of forward walsh-hadamard transform 27 Further adjustment of RD behaviour with Q and Zbin. 28 - Build System: 29 Allow linking of libs built with MinGW to MSVC 30 Fix target auto-detection on mingw32 31 Allow --cpu= to work for x86. 32 configure: pass original arguments through to make dist 33 Fix builds without runtime CPU detection 34 msvs: fix install of codec sources 35 msvs: Change devenv.com command line for better msys support 36 msvs: Add vs9 targets. 37 Add x86_64-linux-icc target 38 - Bugs: 39 Potential crashes on older MinGW builds 40 Fix two-pass framrate for Y4M input. 41 Fixed simple loop filter, other crashes on ARM v6 42 arm: fix missing dependency with --enable-shared 43 configure: support directories containing .o 44 Replace pinsrw (SSE) with MMX instructions 45 apple: include proper mach primatives 46 Fixed rate control bug with long key frame interval. 47 Fix DSO link errors on x86-64 when not using a version script 48 Fixed buffer selection for UV in AltRef filtering 49 50 51 2010-06-17 v0.9.1 52 - Enhancements: 53 * ivfenc/ivfdec now support YUV4MPEG2 input and pipe I/O 54 * Speed optimizations 55 - Bugfixes: 56 * Rate control 57 * Prevent out-of-bounds accesses on invalid data 58 - Build system updates: 59 * Detect toolchain to be used automatically for native builds 60 * Support building shared libraries 61 * Better autotools emulation (--prefix, --libdir, DESTDIR) 62 - Updated LICENSE 63 * http://webmproject.blogspot.com/2010/06/changes-to-webm-open-source-license.html 64 65 66 2010-05-18 v0.9.0 67 - Initial open source release. Welcome to WebM and VP8! 68 69
