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Project News for Dirac

  • ffmpeg2dirac-0.2.0 released

    Release v 0.2.0 of ffmpeg2dirac. Schroedinger is now the default codec library used to code video. All Schroedinger encoder options are supported.
    Source code and a binary for win32 platforms are available for download from
    http://sourceforge.net/projects/dirac/files/
    OR
    http://diracvideo.org/download/ffmpeg2dirac/

    2011-04-24 21:48:22 PDT by asuraparaju

  • Schroedinger-1.0.9 released

    For release details, and new features in this release go to
    http://diracvideo.org/

    2010-03-04 15:38:27 PST by asuraparaju

  • Dirac 1.0.2 released

    This a a minor release complying with the latest
    Dirac Bytestream Specification 2.2.3. Changes in
    this release include

    -Improved compression performance for small
    picture sizes and at low bit-rates.
    -Included macros to check the API version.
    -Improved motion estimation.
    -New 422 <-> 420 conversion utilities for
    interlaced video.
    -Fixed bugs in handling DC subband.
    -DirectShow filter released to be able to play
    back Dirac raw bytestreams or Dirac muxed in AVI
    in Windows Media Player and MPlayer Classic.
    -Released the source and win32 binary of
    ffmpeg2dirac, a utility that can transcode any
    multimedia format that can be decoded by FFmpeg
    into Dirac video and Vorbis audio (if audio
    exists) muxed in Ogg.

    Note that new patches for MPlayer and FFmpeg
    will no longer be released because Dirac support
    via Dirac and Schroedinger libraries is available
    in FFmpeg.

    Latest information on Dirac can be found at
    http://diracvideo.org

    2009-02-11 21:01:43 PST by asuraparaju

  • Dirac 1.0.0 released

    Dirac 1.0.0 has been released. The release tar-ball can be downloaded from

    http://diracvideo.org/download/dirac-research/
    OR
    http://sourceforge.net/projects/dirac/


    Dirac Compression System
    -------------------------

    Dirac is a video compression system that provides general-purpose video compression and decompression tools comparable with state-of-the-art systems. Dirac is a format and compression technology, not a specific codec. The most important part of the Dirac project is the specification which can be found at http://diracvideo.org/specifications.


    Dirac Project
    -------------
    The initial implementation of Dirac at resulted in a research implementation which is referred to as the Dirac codebase. It is now called dirac-research. It is a reference implementation and also a codebase for future algorithmic
    developments. Dirac 1.0.0 is the release of this codebase.

    Dirac website
    -------------
    Information about Dirac and the associated projects can be found at http://diracvideo.org

    What's new in this release
    --------------------------
    Several alpha and beta releases have preceded this release. The changes in 1.0.0 release are:

    - Compliance with Dirac Bytestream specification
    2.2.2
    - Adaptive GOP structure
    - Improved motion estimation.
    - Improved pre-filtering.
    - Major code refactor of encoder classes.
    - Added conversion utility for horizontal 3/4
    filtering.
    - DirectShow Filter released to be able to play
    back Dirac v2.2.2 files raw bytestreams and
    Dirac wrapped in AVI in Windows Media Player
    and MPlayer Classic.

    Dirac content creation and playback
    -----------------------------------
    Information on the end-user applications that support Dirac can be found at
    http://diracvideo.org/wiki/index.php/Main_Page#End_user_applications_that_support_Dirac_video

    2008-09-16 18:49:09 PDT by asuraparaju

  • Dirac Beta version (0.10.0) released

    This a beta release complying with the latest Dirac Specification 2.2.0.

    - Added support for Ultra High Definition video
    formats.
    - Improved compression efficiency in both constant
    quality and constant bit-rate modes.
    - Fixed major bugs that caused the encoder to
    crash or the decoder to go into a permanent
    loop.
    - Dirac support is now directly available in
    FFmpeg via the external Dirac and/or
    Schroedinger libraries. Hence there is no
    FFMpeg patch in this release.
    - Released new patches for MPlayer to enable
    Dirac playback.
    - DirectShow Filter released to be able to play
    back Dirac v2.2.0 files
    - Modified Programmer's guide to reflect changes
    to the API.
    - Bugs fixed: 1944681, 1906788, 1893223, 1874587

    2008-06-04 01:06:43 PDT by asuraparaju