Dirac
Details
| Last Update: | 2008-01-27 23:01:12 |
| Version: | 0.9.1 |
| License/Program Type: | MPL (Mozilla Public License) |
| Publisher: | Dirac Team |
| Price: | $0.00 |
Description:
Dirac is a video codec that provides general-purpose video
compression and decompression tools comparable with
state-of-the-art systems.
Dirac video codec is available for distribution under the MPL
version 1.1 software license.
Dirac is an open source video codec. It uses a traditional
hybrid video codec architecture, but with the wavelet transform
instead of the usual block transforms. Motion compensation uses
overlapped blocks to reduce block artefacts that would upset the
transform coding stage.
Dirac can code just about any size of video, from streaming up
to HD and beyond, although certain presets are defined for
different applications and standards. These cover the parameters
that need to be set for the encoder to work, such as block sizes
and temporal prediction structures, which must otherwise be set by
hand.
Dirac is intended to develop into real coding and decoding
software, capable of plugging into video processing applications
and media players that need compression.
It is intended to develop into a simple set of reliable but
effective coding tools that work over a wide variety of content and
formats, using well-understood compression techniques, in a clear
and accessible software structure. It is not intended as a
demonstration or reference coder.
What's New in This Release:
· 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.
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