forked from mirror/libbpg
83 lines
4 KiB
ReStructuredText
83 lines
4 KiB
ReStructuredText
|
************
|
||
|
|
Introduction
|
||
|
|
************
|
||
|
|
|
||
|
|
Increasing demand for high definition and ultra-high definition video,
|
||
|
|
along with an increasing desire for video on demand has led to
|
||
|
|
exponential growth in demand for bandwidth and storage requirements.
|
||
|
|
These challenges can be met by the new High Efficiency Video Coding
|
||
|
|
(HEVC) standard, also known as H.265. The x265 HEVC encoder project was
|
||
|
|
launched by MulticoreWare in 2013, aiming to provide the most efficient,
|
||
|
|
highest performance HEVC video encoder.
|
||
|
|
|
||
|
|
About HEVC
|
||
|
|
==========
|
||
|
|
|
||
|
|
The High Efficiency Video Coding (HEVC) was developed by the ISO/IEC
|
||
|
|
Moving Picture Experts Group (MPEG) and ITU-T Video Coding Experts Group
|
||
|
|
(VCEG), through their Joint Collaborative Team on Video Coding (JCT-VC).
|
||
|
|
HEVC is also known as ISO/IEC 23008-2 MPEG-H Part 2 and ITU-T H.265.
|
||
|
|
HEVC provides superior video quality and up to twice the data
|
||
|
|
compression as the previous standard (H.264/MPEG-4 AVC). HEVC can
|
||
|
|
support 8K Ultra High Definition video, with a picture size up to
|
||
|
|
8192x4320 pixels.
|
||
|
|
|
||
|
|
About x265
|
||
|
|
==========
|
||
|
|
|
||
|
|
The primary objective of x265 is to become the best H.265/HEVC encoder
|
||
|
|
available anywhere, offering the highest compression efficiency and the
|
||
|
|
highest performance on a wide variety of hardware platforms. The x265
|
||
|
|
encoder is available as an open source library, published under the
|
||
|
|
GPLv2 license. It is also available under a commercial license, enabling
|
||
|
|
commercial companies to utilize and distribute x265 in their solutions
|
||
|
|
without being subject to the restrictions of the GPL license.
|
||
|
|
|
||
|
|
x265 is developed by `MulticoreWare <http://www.multicorewareinc.com>`_,
|
||
|
|
leaders in high performance software solutions, with backing from
|
||
|
|
leading video technology providers including `Telestream
|
||
|
|
<http://www.telestream.com>`_ and `Doremi Labs
|
||
|
|
<http://www.doremilabs.com>`_ (and other companies who want to remain
|
||
|
|
anonymous at this time), and with contributions from open source
|
||
|
|
developers. x265 leverages many of the outstanding video encoding
|
||
|
|
features and optimizations from the x264 AVC encoder project.
|
||
|
|
|
||
|
|
The x265 software is available for free under the GNU GPL 2 license,
|
||
|
|
from https://bitbucket.org/multicoreware/x265. For commercial companies
|
||
|
|
that wish to distribute x265 without being subject to the open source
|
||
|
|
requirements of the GPL 2 license, commercial licenses are available
|
||
|
|
with competitive terms. Contact license @ x265.com to inquire about
|
||
|
|
commercial license terms.
|
||
|
|
|
||
|
|
While x265 is primarily designed as a video encoder software library, a
|
||
|
|
command-line executable is provided to facilitate testing and
|
||
|
|
development. We expect x265 to be utilized in many leading video
|
||
|
|
hardware and software products and services in the coming months.
|
||
|
|
|
||
|
|
LEGAL NOTICES
|
||
|
|
=============
|
||
|
|
|
||
|
|
The x265 software is owned and copyrighted by MulticoreWare, Inc.
|
||
|
|
MulticoreWare is committed to offering the x265 software under the GNU
|
||
|
|
GPL v2 license. Companies who do not wish to integrate the x265
|
||
|
|
Software in their products under the terms of the GPL license can
|
||
|
|
contact MulticoreWare (license @ x265.com) to obtain a commercial
|
||
|
|
license agreement. Companies who use x265 under the GPL may also wish
|
||
|
|
to work with MulticoreWare to accelerate the development of specific
|
||
|
|
features or optimized support for specific hardware or software
|
||
|
|
platforms, or to contract for support.
|
||
|
|
|
||
|
|
The GNU GPL v2 license or the x265 commercial license agreement govern
|
||
|
|
your rights to access the copyrighted x265 software source code, but do
|
||
|
|
not cover any patents that may be applicable to the function of binary
|
||
|
|
executable software created from the x265 source code. You are
|
||
|
|
responsible for understanding the laws in your country, and for
|
||
|
|
licensing all applicable patent rights needed for use or distribution of
|
||
|
|
software applications created from the x265 source code. A good place
|
||
|
|
to start is with the `Motion Picture Experts Group - Licensing Authority
|
||
|
|
- HEVC Licensing Program <http://www.mpegla.com/main/PID/HEVC/default.aspx>`_.
|
||
|
|
|
||
|
|
x265 is a registered trademark of MulticoreWare, Inc. The x265 logo is
|
||
|
|
a trademark of MulticoreWare, and may only be used with explicit written
|
||
|
|
permission. All rights reserved.
|