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 Readme for:  Development » Library » Graphics » libvpx.lha

Libvpx

Description: WebM VP8 Codec library
Download: libvpx.lha       (TIPS: Use the right click menu if your browser takes you back here all the time)
Size: 5Mb
Version: 1.3.0
Date: 09 Jan 14
Author: WebM project / Google Inc.
Submitter: Michael Trebilcock
Homepage: http://code.google.com/p/webm/downloads/list
Category: development/library/graphics
Replaces: development/library/graphics/libvpx.lha
License: Other
Distribute: yes
Min OS Version: 4.0
FileID: 8548
 
Comments: 0
Snapshots: 0
Downloads: 57  (Current version)
455  (Accumulated)
Votes: 0 (0/0)  (30 days/7 days)

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Newlib static and shared object port of libVPX, a freely available and
open-source video codec.

Difficult to port. Instructions on how to port future versions of libVPX are
included.

vpxenc / vpxdec tested and included as example programs.

Modified source is included. Simply extract, "sh" and "Make" (make an assign to
"Other:" first). Read the how-to guide before compiling.

Changes (general):

2013-11-15 v1.3.0 "Forest"
  This release introduces the VP9 codec in a backward-compatible way.
  All existing users of VP8 can continue to use the library without
  modification. However, some VP8 options do not map to VP9 in the same manner.

  The VP9 encoder in this release is not feature complete. Users interested in
  the encoder are advised to use the git master branch and discuss issues on
  libvpx mailing lists.

  - 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.

  - Enhancements:
      Get rid of bashisms in the main build scripts
      Added usage info on command line options
      Add lossless compression mode
      Dll build of libvpx
      Add additional Mac OS X targets: 10.7, 10.8 and 10.9 (darwin11-13)
      Add option to disable documentation
      configure: add --enable-external-build support
      make: support V=1 as short form of verbose=yes
      configure: support mingw-w64
      configure: support hardfloat armv7 CHOSTS
      configure: add support for android x86
      Add estimated completion time to vpxenc
      Don't exit on decode errors in vpxenc
      vpxenc: support scaling prior to encoding
      vpxdec: support scaling output
      vpxenc: improve progress indicators with --skip
      msvs: Don't link to winmm.lib
      Add a new script for producing vcxproj files
      Produce Visual Studio 10 and 11 project files
      Produce Windows Phone project files
      msvs-build: use msbuild for vs >= 2005
      configure: default configure log to config.log
      Add encoding option --static-thresh

  - Speed:
      Miscellaneous speed optimizations for VP8 and VP9.

  - Quality:
      In general, quality is consistent with the Eider release.

  - Bug Fixes:
      This release represents approximately a year of engineering effort,
      and contains multiple bug fixes. Please refer to git history for details.


2012-12-21 v1.2.0
  This release acts as a checkpoint for a large amount of internal refactoring
  and testing. It also contains a number of small bugfixes, so all users 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.

  - Enhancements:
      VP8 optimizations for MIPS dspr2
      vpxenc: add -quiet option

  - Speed:
      Encoder and decoder speed is consistent with the Eider release.

  - Quality:
      In general, quality is consistent with the Eider release.

      Minor tweaks to ARNR filtering
      Minor improvements to real time encoding with multiple temporal layers

  - Bug Fixes:
      Fixes multithreaded encoder race condition in loopfilter
      Fixes multi-resolution threaded encoding
      Fix potential encoder dead-lock after picture resize

Copyright (c) 2004-2014 by Björn Hagström All Rights Reserved
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