1 2017-01-09 v1.6.1 "Long Tailed Duck" 2 This release improves upon the VP9 encoder and speeds up the encoding and 3 decoding processes. 4 5 - Upgrading: 6 This release is ABI compatible with 1.6.0. 7 8 - Enhancements: 9 Faster VP9 encoding and decoding. 10 High bit depth builds now provide similar speed for 8 bit encode and decode 11 for x86 targets. Other platforms and higher bit depth improvements are in 12 progress. 13 14 - Bug Fixes: 15 A variety of fuzzing issues. 16 17 2016-07-20 v1.6.0 "Khaki Campbell Duck" 18 This release improves upon the VP9 encoder and speeds up the encoding and 19 decoding processes. 20 21 - Upgrading: 22 This release is ABI incompatible with 1.5.0 due to a new 'color_range' enum 23 in vpx_image and some minor changes to the VP8_COMP structure. 24 25 The default key frame interval for VP9 has changed from 128 to 9999. 26 27 - Enhancement: 28 A core focus has been performance for low end Intel processors. SSSE3 29 instructions such as 'pshufb' have been avoided and instructions have been 30 reordered to better accommodate the more constrained pipelines. 31 32 As a result, devices based on Celeron processors have seen substantial 33 decoding improvements. From Indian Runner Duck to Javan Whistling Duck, 34 decoding speed improved between 10 and 30%. Between Javan Whistling Duck 35 and Khaki Campbell Duck, it improved another 10 to 15%. 36 37 While Celeron benefited most, Core-i5 also improved 5% and 10% between the 38 respective releases. 39 40 Realtime performance for WebRTC for both speed and quality has received a 41 lot of attention. 42 43 - Bug Fixes: 44 A number of fuzzing issues, found variously by Mozilla, Chromium and others, 45 have been fixed and we strongly recommend updating. 46 47 2015-11-09 v1.5.0 "Javan Whistling Duck" 48 This release improves upon the VP9 encoder and speeds up the encoding and 49 decoding processes. 50 51 - Upgrading: 52 This release is ABI incompatible with 1.4.0. It drops deprecated VP8 53 controls and adds a variety of VP9 controls for testing. 54 55 The vpxenc utility now prefers VP9 by default. 56 57 - Enhancements: 58 Faster VP9 encoding and decoding 59 Smaller library size by combining functions used by VP8 and VP9 60 61 - Bug Fixes: 62 A variety of fuzzing issues 63 64 2015-04-03 v1.4.0 "Indian Runner Duck" 65 This release includes significant improvements to the VP9 codec. 66 67 - Upgrading: 68 This release is ABI incompatible with 1.3.0. It drops the compatibility 69 layer, requiring VPX_IMG_FMT_* instead of IMG_FMT_*, and adds several codec 70 controls for VP9. 71 72 - Enhancements: 73 Faster VP9 encoding and decoding 74 Multithreaded VP9 decoding (tile and frame-based) 75 Multithreaded VP9 encoding - on by default 76 YUV 4:2:2 and 4:4:4 support in VP9 77 10 and 12bit support in VP9 78 64bit ARM support by replacing ARM assembly with intrinsics 79 80 - Bug Fixes: 81 Fixes a VP9 bitstream issue in Profile 1. This only affected non-YUV 4:2:0 82 files. 83 84 - Known Issues: 85 Frame Parallel decoding fails for segmented and non-420 files. 86 87 2013-11-15 v1.3.0 "Forest" 88 This release introduces the VP9 codec in a backward-compatible way. 89 All existing users of VP8 can continue to use the library without 90 modification. However, some VP8 options do not map to VP9 in the same manner. 91 92 The VP9 encoder in this release is not feature complete. Users interested in 93 the encoder are advised to use the git master branch and discuss issues on 94 libvpx mailing lists. 95 96 - Upgrading: 97 This release is ABI and API compatible with Duclair (v1.0.0). Users 98 of older releases should refer to the Upgrading notes in this document 99 for that release. 100 101 - Enhancements: 102 Get rid of bashisms in the main build scripts 103 Added usage info on command line options 104 Add lossless compression mode 105 Dll build of libvpx 106 Add additional Mac OS X targets: 10.7, 10.8 and 10.9 (darwin11-13) 107 Add option to disable documentation 108 configure: add --enable-external-build support 109 make: support V=1 as short form of verbose=yes 110 configure: support mingw-w64 111 configure: support hardfloat armv7 CHOSTS 112 configure: add support for android x86 113 Add estimated completion time to vpxenc 114 Don't exit on decode errors in vpxenc 115 vpxenc: support scaling prior to encoding 116 vpxdec: support scaling output 117 vpxenc: improve progress indicators with --skip 118 msvs: Don't link to winmm.lib 119 Add a new script for producing vcxproj files 120 Produce Visual Studio 10 and 11 project files 121 Produce Windows Phone project files 122 msvs-build: use msbuild for vs >= 2005 123 configure: default configure log to config.log 124 Add encoding option --static-thresh 125 126 - Speed: 127 Miscellaneous speed optimizations for VP8 and VP9. 128 129 - Quality: 130 In general, quality is consistent with the Eider release. 131 132 - Bug Fixes: 133 This release represents approximately a year of engineering effort, 134 and contains multiple bug fixes. Please refer to git history for details. 135 136 137 2012-12-21 v1.2.0 138 This release acts as a checkpoint for a large amount of internal refactoring 139 and testing. It also contains a number of small bugfixes, so all users are 140 encouraged to upgrade. 141 142 - Upgrading: 143 This release is ABI and API compatible with Duclair (v1.0.0). Users 144 of older releases should refer to the Upgrading notes in this 145 document for that release. 146 147 - Enhancements: 148 VP8 optimizations for MIPS dspr2 149 vpxenc: add -quiet option 150 151 - Speed: 152 Encoder and decoder speed is consistent with the Eider release. 153 154 - Quality: 155 In general, quality is consistent with the Eider release. 156 157 Minor tweaks to ARNR filtering 158 Minor improvements to real time encoding with multiple temporal layers 159 160 - Bug Fixes: 161 Fixes multithreaded encoder race condition in loopfilter 162 Fixes multi-resolution threaded encoding 163 Fix potential encoder dead-lock after picture resize 164 165 166 2012-05-09 v1.1.0 "Eider" 167 This introduces a number of enhancements, mostly focused on real-time 168 encoding. In addition, it fixes a decoder bug (first introduced in 169 Duclair) so all users of that release are encouraged to upgrade. 170 171 - Upgrading: 172 This release is ABI and API compatible with Duclair (v1.0.0). Users 173 of older releases should refer to the Upgrading notes in this 174 document for that release. 175 176 This release introduces a new temporal denoiser, controlled by the 177 VP8E_SET_NOISE_SENSITIVITY control. The temporal denoiser does not 178 currently take a strength parameter, so the control is effectively 179 a boolean - zero (off) or non-zero (on). For compatibility with 180 existing applications, the values accepted are the same as those 181 for the spatial denoiser (0-6). The temporal denoiser is enabled 182 by default, and the older spatial denoiser may be restored by 183 configuring with --disable-temporal-denoising. The temporal denoiser 184 is more computationally intensive than the spatial one. 185 186 This release removes support for a legacy, decode only API that was 187 supported, but deprecated, at the initial release of libvpx 188 (v0.9.0). This is not expected to have any impact. If you are 189 impacted, you can apply a reversion to commit 2bf8fb58 locally. 190 Please update to the latest libvpx API if you are affected. 191 192 - Enhancements: 193 Adds a motion compensated temporal denoiser to the encoder, which 194 gives higher quality than the older spatial denoiser. (See above 195 for notes on upgrading). 196 197 In addition, support for new compilers and platforms were added, 198 including: 199 improved support for XCode 200 Android x86 NDK build 201 OS/2 support 202 SunCC support 203 204 Changing resolution with vpx_codec_enc_config_set() is now 205 supported. Previously, reinitializing the codec was required to 206 change the input resolution. 207 208 The vpxenc application has initial support for producing multiple 209 encodes from the same input in one call. Resizing is not yet 210 supported, but varying other codec parameters is. Use -- to 211 delineate output streams. Options persist from one stream to the 212 next. 213 214 Also, the vpxenc application will now use a keyframe interval of 215 5 seconds by default. Use the --kf-max-dist option to override. 216 217 - Speed: 218 Decoder performance improved 2.5% versus Duclair. Encoder speed is 219 consistent with Duclair for most material. Two pass encoding of 220 slideshow-like material will see significant improvements. 221 222 Large realtime encoding speed gains at a small quality expense are 223 possible by configuring the on-the-fly bitpacking experiment with 224 --enable-onthefly-bitpacking. Realtime encoder can be up to 13% 225 faster (ARM) depending on the number of threads and bitrate 226 settings. This technique sees constant gain over the 5-16 speed 227 range. For VC style input the loss seen is up to 0.2dB. See commit 228 52cf4dca for further details. 229 230 - Quality: 231 On the whole, quality is consistent with the Duclair release. Some 232 tweaks: 233 234 Reduced blockiness in easy sections by applying a penalty to 235 intra modes. 236 237 Improved quality of static sections (like slideshows) with 238 two pass encoding. 239 240 Improved keyframe sizing with multiple temporal layers 241 242 - Bug Fixes: 243 Corrected alt-ref contribution to frame rate for visible updates 244 to the alt-ref buffer. This affected applications making manual 245 usage of the frame reference flags, or temporal layers. 246 247 Additional constraints were added to disable multi-frame quality 248 enhancement (MFQE) in sections of the frame where there is motion. 249 (#392) 250 251 Fixed corruption issues when vpx_codec_enc_config_set() was called 252 with spatial resampling enabled. 253 254 Fixed a decoder error introduced in Duclair where the segmentation 255 map was not being reinitialized on keyframes (#378) 256 257 258 2012-01-27 v1.0.0 "Duclair" 259 Our fourth named release, focused on performance and features related to 260 real-time encoding. It also fixes a decoder crash bug introduced in 261 v0.9.7, so all users of that release are encouraged to upgrade. 262 263 - Upgrading: 264 This release is ABI incompatible with prior releases of libvpx, so the 265 "major" version number has been bumped to 1. You must recompile your 266 applications against the latest version of the libvpx headers. The 267 API remains compatible, and this should not require code changes in most 268 applications. 269 270 - Enhancements: 271 This release introduces several substantial new features to the encoder, 272 of particular interest to real time streaming applications. 273 274 Temporal scalability allows the encoder to produce a stream that can 275 be decimated to different frame rates, with independent rate targetting 276 for each substream. 277 278 Multiframe quality enhancement postprocessing can make visual quality 279 more consistent in the presence of frames that are substantially 280 different quality than the surrounding frames, as in the temporal 281 scalability case and in some forced keyframe scenarios. 282 283 Multiple-resolution encoding support allows the encoding of the 284 same content at different resolutions faster than encoding them 285 separately. 286 287 - Speed: 288 Optimization targets for this release included the decoder and the real- 289 time modes of the encoder. Decoder speed on x86 has improved 10.5% with 290 this release. Encoder improvements followed a curve where speeds 1-3 291 improved 4.0%-1.5%, speeds 4-8 improved <1%, and speeds 9-16 improved 292 1.5% to 10.5%, respectively. "Best" mode speed is consistent with the 293 Cayuga release. 294 295 - Quality: 296 Encoder quality in the single stream case is consistent with the Cayuga 297 release. 298 299 - Bug Fixes: 300 This release fixes an OOB read decoder crash bug present in v0.9.7 301 related to the clamping of motion vectors in SPLITMV blocks. This 302 behavior could be triggered by corrupt input or by starting 303 decoding from a P-frame. 304 305 306 2011-08-15 v0.9.7-p1 "Cayuga" patch 1 307 This is an incremental bugfix release against Cayuga. All users of that 308 release are strongly encouraged to upgrade. 309 310 - Fix potential OOB reads (cdae03a) 311 312 An unbounded out of bounds read was discovered when the 313 decoder was requested to perform error concealment (new in 314 Cayuga) given a frame with corrupt partition sizes. 315 316 A bounded out of bounds read was discovered affecting all 317 versions of libvpx. Given an multipartition input frame that 318 is truncated between the mode/mv partition and the first 319 residiual paritition (in the block of partition offsets), up 320 to 3 extra bytes could have been read from the source buffer. 321 The code will not take any action regardless of the contents 322 of these undefined bytes, as the truncated buffer is detected 323 immediately following the read based on the calculated 324 starting position of the coefficient partition. 325 326 - Fix potential error concealment crash when the very first frame 327 is missing or corrupt (a609be5) 328 329 - Fix significant artifacts in error concealment (a4c2211, 99d870a) 330 331 - Revert 1-pass CBR rate control changes (e961317) 332 Further testing showed this change produced undesirable visual 333 artifacts, rolling back for now. 334 335 336 2011-08-02 v0.9.7 "Cayuga" 337 Our third named release, focused on a faster, higher quality, encoder. 338 339 - Upgrading: 340 This release is backwards compatible with Aylesbury (v0.9.5) and 341 Bali (v0.9.6). Users of older releases should refer to the Upgrading 342 notes in this document for that release. 343 344 - Enhancements: 345 Stereo 3D format support for vpxenc 346 Runtime detection of available processor cores. 347 Allow specifying --end-usage by enum name 348 vpxdec: test for frame corruption 349 vpxenc: add quantizer histogram display 350 vpxenc: add rate histogram display 351 Set VPX_FRAME_IS_DROPPABLE 352 update configure for ios sdk 4.3 353 Avoid text relocations in ARM vp8 decoder 354 Generate a vpx.pc file for pkg-config. 355 New ways of passing encoded data between encoder and decoder. 356 357 - Speed: 358 This release includes across-the-board speed improvements to the 359 encoder. On x86, these measure at approximately 11.5% in Best mode, 360 21.5% in Good mode (speed 0), and 22.5% in Realtime mode (speed 6). 361 On ARM Cortex A9 with Neon extensions, real-time encoding of video 362 telephony content is 35% faster than Bali on single core and 48% 363 faster on multi-core. On the NVidia Tegra2 platform, real time 364 encoding is 40% faster than Bali. 365 366 Decoder speed was not a priority for this release, but improved 367 approximately 8.4% on x86. 368 369 Reduce motion vector search on alt-ref frame. 370 Encoder loopfilter running in its own thread 371 Reworked loopfilter to precalculate more parameters 372 SSE2/SSSE3 optimizations for build_predictors_mbuv{,_s}(). 373 Make hor UV predict ~2x faster (73 vs 132 cycles) using SSSE3. 374 Removed redundant checks 375 Reduced structure sizes 376 utilize preload in ARMv6 MC/LPF/Copy routines 377 ARM optimized quantization, dfct, variance, subtract 378 Increase chrow row alignment to 16 bytes. 379 disable trellis optimization for first pass 380 Write SSSE3 sub-pixel filter function 381 Improve SSE2 half-pixel filter funtions 382 Add vp8_sub_pixel_variance16x8_ssse3 function 383 Reduce unnecessary distortion computation 384 Use diamond search to replace full search 385 Preload reference area in sub-pixel motion search (real-time mode) 386 387 - Quality: 388 This release focused primarily on one-pass use cases, including 389 video conferencing. Low latency data rate control was significantly 390 improved, improving streamability over bandwidth constrained links. 391 Added support for error concealment, allowing frames to maintain 392 visual quality in the presence of substantial packet loss. 393 394 Add rc_max_intra_bitrate_pct control 395 Limit size of initial keyframe in one-pass. 396 Improve framerate adaptation 397 Improved 1-pass CBR rate control 398 Improved KF insertion after fades to still. 399 Improved key frame detection. 400 Improved activity masking (lower PSNR impact for same SSIM boost) 401 Improved interaction between GF and ARFs 402 Adding error-concealment to the decoder. 403 Adding support for independent partitions 404 Adjusted rate-distortion constants 405 406 407 - Bug Fixes: 408 Removed firstpass motion map 409 Fix parallel make install 410 Fix multithreaded encoding for 1 MB wide frame 411 Fixed iwalsh_neon build problems with RVDS4.1 412 Fix semaphore emulation, spin-wait intrinsics on Windows 413 Fix build with xcode4 and simplify GLOBAL. 414 Mark ARM asm objects as allowing a non-executable stack. 415 Fix vpxenc encoding incorrect webm file header on big endian 416 417 418 2011-03-07 v0.9.6 "Bali" 419 Our second named release, focused on a faster, higher quality, encoder. 420 421 - Upgrading: 422 This release is backwards compatible with Aylesbury (v0.9.5). Users 423 of older releases should refer to the Upgrading notes in this 424 document for that release. 425 426 - Enhancements: 427 vpxenc --psnr shows a summary when encode completes 428 --tune=ssim option to enable activity masking 429 improved postproc visualizations for development 430 updated support for Apple iOS to SDK 4.2 431 query decoder to determine which reference frames were updated 432 implemented error tracking in the decoder 433 fix pipe support on windows 434 435 - Speed: 436 Primary focus was on good quality mode, speed 0. Average improvement 437 on x86 about 40%, up to 100% on user-generated content at that speed. 438 Best quality mode speed improved 35%, and realtime speed 10-20%. This 439 release also saw significant improvement in realtime encoding speed 440 on ARM platforms. 441 442 Improved encoder threading 443 Dont pick encoder filter level when loopfilter is disabled. 444 Avoid double copying of key frames into alt and golden buffer 445 FDCT optimizations. 446 x86 sse2 temporal filter 447 SSSE3 version of fast quantizer 448 vp8_rd_pick_best_mbsegmentation code restructure 449 Adjusted breakout RD for SPLITMV 450 Changed segmentation check order 451 Improved rd_pick_intra4x4block 452 Adds armv6 optimized variance calculation 453 ARMv6 optimized sad16x16 454 ARMv6 optimized half pixel variance calculations 455 Full search SAD function optimization in SSE4.1 456 Improve MV prediction accuracy to achieve performance gain 457 Improve MV prediction in vp8_pick_inter_mode() for speed>3 458 459 - Quality: 460 Best quality mode improved PSNR 6.3%, and SSIM 6.1%. This release 461 also includes support for "activity masking," which greatly improves 462 SSIM at the expense of PSNR. For now, this feature is available with 463 the --tune=ssim option. Further experimentation in this area 464 is ongoing. This release also introduces a new rate control mode 465 called "CQ," which changes the allocation of bits within a clip to 466 the sections where they will have the most visual impact. 467 468 Tuning for the more exact quantizer. 469 Relax rate control for last few frames 470 CQ Mode 471 Limit key frame quantizer for forced key frames. 472 KF/GF Pulsing 473 Add simple version of activity masking. 474 make rdmult adaptive for intra in quantizer RDO 475 cap the best quantizer for 2nd order DC 476 change the threshold of DC check for encode breakout 477 478 - Bug Fixes: 479 Fix crash on Sparc Solaris. 480 Fix counter of fixed keyframe distance 481 ARNR filter pointer update bug fix 482 Fixed use of motion percentage in KF/GF group calc 483 Changed condition for using RD in Intra Mode 484 Fix encoder real-time only configuration. 485 Fix ARM encoder crash with multiple token partitions 486 Fixed bug first cluster timecode of webm file is wrong. 487 Fixed various encoder bugs with odd-sized images 488 vp8e_get_preview fixed when spatial resampling enabled 489 quantizer: fix assertion in fast quantizer path 490 Allocate source buffers to be multiples of 16 491 Fix for manual Golden frame frequency 492 Fix drastic undershoot in long form content 493 494 495 2010-10-28 v0.9.5 "Aylesbury" 496 Our first named release, focused on a faster decoder, and a better encoder. 497 498 - Upgrading: 499 This release incorporates backwards-incompatible changes to the 500 ivfenc and ivfdec tools. These tools are now called vpxenc and vpxdec. 501 502 vpxdec 503 * the -q (quiet) option has been removed, and replaced with 504 -v (verbose). the output is quiet by default. Use -v to see 505 the version number of the binary. 506 507 * The default behavior is now to write output to a single file 508 instead of individual frames. The -y option has been removed. 509 Y4M output is the default. 510 511 * For raw I420/YV12 output instead of Y4M, the --i420 or --yv12 512 options must be specified. 513 514 $ ivfdec -o OUTPUT INPUT 515 $ vpxdec --i420 -o OUTPUT INPUT 516 517 * If an output file is not specified, the default is to write 518 Y4M to stdout. This makes piping more natural. 519 520 $ ivfdec -y -o - INPUT | ... 521 $ vpxdec INPUT | ... 522 523 * The output file has additional flexibility for formatting the 524 filename. It supports escape characters for constructing a 525 filename from the width, height, and sequence number. This 526 replaces the -p option. To get the equivalent: 527 528 $ ivfdec -p frame INPUT 529 $ vpxdec --i420 -o frame-%wx%h-%4.i420 INPUT 530 531 vpxenc 532 * The output file must be specified with -o, rather than as the 533 last argument. 534 535 $ ivfenc <options> INPUT OUTPUT 536 $ vpxenc <options> -o OUTPUT INPUT 537 538 * The output defaults to webm. To get IVF output, use the --ivf 539 option. 540 541 $ ivfenc <options> INPUT OUTPUT.ivf 542 $ vpxenc <options> -o OUTPUT.ivf --ivf INPUT 543 544 545 - Enhancements: 546 ivfenc and ivfdec have been renamed to vpxenc, vpxdec. 547 vpxdec supports .webm input 548 vpxdec writes .y4m by default 549 vpxenc writes .webm output by default 550 vpxenc --psnr now shows the average/overall PSNR at the end 551 ARM platforms now support runtime cpu detection 552 vpxdec visualizations added for motion vectors, block modes, references 553 vpxdec now silent by default 554 vpxdec --progress shows frame-by-frame timing information 555 vpxenc supports the distinction between --fps and --timebase 556 NASM is now a supported assembler 557 configure: enable PIC for shared libs by default 558 configure: add --enable-small 559 configure: support for ppc32-linux-gcc 560 configure: support for sparc-solaris-gcc 561 562 - Bugs: 563 Improve handling of invalid frames 564 Fix valgrind errors in the NEON loop filters. 565 Fix loopfilter delta zero transitions 566 Fix valgrind errors in vp8_sixtap_predict8x4_armv6(). 567 Build fixes for darwin-icc 568 569 - Speed: 570 20-40% (average 28%) improvement in libvpx decoder speed, 571 including: 572 Rewrite vp8_short_walsh4x4_sse2() 573 Optimizations on the loopfilters. 574 Miscellaneous improvements for Atom 575 Add 4-tap version of 2nd-pass ARMv6 MC filter. 576 Improved multithread utilization 577 Better instruction choices on x86 578 reorder data to use wider instructions 579 Update NEON wide idcts 580 Make block access to frame buffer sequential 581 Improved subset block search 582 Bilinear subpixel optimizations for ssse3. 583 Decrease memory footprint 584 585 Encoder speed improvements (percentage gain not measured): 586 Skip unnecessary search of identical frames 587 Add SSE2 subtract functions 588 Improve bounds checking in vp8_diamond_search_sadx4() 589 Added vp8_fast_quantize_b_sse2 590 591 - Quality: 592 Over 7% overall PSNR improvement (6.3% SSIM) in "best" quality 593 encoding mode, and up to 60% improvement on very noisy, still 594 or slow moving source video 595 596 Motion compensated temporal filter for Alt-Ref Noise Reduction 597 Improved use of trellis quantization on 2nd order Y blocks 598 Tune effect of motion on KF/GF boost in two pass 599 Allow coefficient optimization for good quality speed 0. 600 Improved control of active min quantizer for two pass. 601 Enable ARFs for non-lagged compress 602 603 2010-09-02 v0.9.2 604 - Enhancements: 605 Disable frame dropping by default 606 Improved multithreaded performance 607 Improved Force Key Frame Behaviour 608 Increased rate control buffer level precision 609 Fix bug in 1st pass motion compensation 610 ivfenc: correct fixed kf interval, --disable-kf 611 - Speed: 612 Changed above and left context data layout 613 Rework idct calling structure. 614 Removed unnecessary MB_MODE_INFO copies 615 x86: SSSE3 sixtap prediction 616 Reworked IDCT to include reconstruction (add) step 617 Swap alt/gold/new/last frame buffer ptrs instead of copying. 618 Improve SSE2 loopfilter functions 619 Change bitreader to use a larger window. 620 Avoid loopfilter reinitialization when possible 621 - Quality: 622 Normalize quantizer's zero bin and rounding factors 623 Add trellis quantization. 624 Make the quantizer exact. 625 Updates to ARNR filtering algorithm 626 Fix breakout thresh computation for golden & AltRef frames 627 Redo the forward 4x4 dct 628 Improve the accuracy of forward walsh-hadamard transform 629 Further adjustment of RD behaviour with Q and Zbin. 630 - Build System: 631 Allow linking of libs built with MinGW to MSVC 632 Fix target auto-detection on mingw32 633 Allow --cpu= to work for x86. 634 configure: pass original arguments through to make dist 635 Fix builds without runtime CPU detection 636 msvs: fix install of codec sources 637 msvs: Change devenv.com command line for better msys support 638 msvs: Add vs9 targets. 639 Add x86_64-linux-icc target 640 - Bugs: 641 Potential crashes on older MinGW builds 642 Fix two-pass framrate for Y4M input. 643 Fixed simple loop filter, other crashes on ARM v6 644 arm: fix missing dependency with --enable-shared 645 configure: support directories containing .o 646 Replace pinsrw (SSE) with MMX instructions 647 apple: include proper mach primatives 648 Fixed rate control bug with long key frame interval. 649 Fix DSO link errors on x86-64 when not using a version script 650 Fixed buffer selection for UV in AltRef filtering 651 652 653 2010-06-17 v0.9.1 654 - Enhancements: 655 * ivfenc/ivfdec now support YUV4MPEG2 input and pipe I/O 656 * Speed optimizations 657 - Bugfixes: 658 * Rate control 659 * Prevent out-of-bounds accesses on invalid data 660 - Build system updates: 661 * Detect toolchain to be used automatically for native builds 662 * Support building shared libraries 663 * Better autotools emulation (--prefix, --libdir, DESTDIR) 664 - Updated LICENSE 665 * http://webmproject.blogspot.com/2010/06/changes-to-webm-open-source-license.html 666 667 668 2010-05-18 v0.9.0 669 - Initial open source release. Welcome to WebM and VP8! 670 671
