dirac

Minor bugs have been fixed. Compression efficiency is improved. A DirectShow filter to play back Dirac files in Windows Media Player and MPlayer Classic has been released. A utility called ffmpeg2dirac has been released to transcode any multimedia format that can be decoded by FFmpeg to Dirac (for video) and Vorbis (audio) muxed in Ogg.

Encoder classes have been refactored to make coding processes more clear. Minor bugs have been fixed. Compression efficiency is improved. A DirectShow filter to play back Dirac files in Windows Media Player has been released. Support for Dirac encoding, decoding, and muxing via Dirac libraries and Schroedinger libraries is now available in FFmpeg and MPlayer.

Support for Ultra High Definition video formats
was added. Compression efficiency was improved.
Major bugs that caused crashes and permanent loops
were fixed. Patches to enable Dirac playback in
MPlayer were released. A DirectShow filter to
enable playback of Dirac files in Windows Media
Player was released. The API has changed, so all
applications using Dirac libraries need to be
rebuilt.

This is a minor release that complies with Dirac
Bytestream Specification 2.1.0. Bugs in the motion
compensation block weighting matrix and in the
constant bit rate module when encoding I-frame
only sequences were fixed. Bugs in the Dirac
patches for MPlayer and FFmpeg and the Dirac
DirectShow Filter were fixed.

This is a major release that complies with the
Dirac Bytestream Specification 2.0.0. The
specification can be downloaded from
http://dirac.sourceforge.net/specification.html.
Quantiser selection, motion compensation, and
constant bit-rate coding performance have been
improved. Bugs in constant bit-rate coding mode,
dc value prediction in motion decoding, and
handling concatenated Dirac bytestreams have been
fixed. The encoder and decoder APIs have changed.
New patches have been released for MPlayer and
FFMpeg. A new version of the DirectShow filter has
been released to comply with Dirac 0.9.0.