Mercurial > hg > forks > libbpg
comparison x265/doc/reST/introduction.rst @ 0:772086c29cc7
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author | Matti Hamalainen <ccr@tnsp.org> |
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date | Wed, 16 Nov 2016 11:16:33 +0200 |
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1 ************ | |
2 Introduction | |
3 ************ | |
4 | |
5 Increasing demand for high definition and ultra-high definition video, | |
6 along with an increasing desire for video on demand has led to | |
7 exponential growth in demand for bandwidth and storage requirements. | |
8 These challenges can be met by the new High Efficiency Video Coding | |
9 (HEVC) standard, also known as H.265. The x265 HEVC encoder project was | |
10 launched by MulticoreWare in 2013, aiming to provide the most efficient, | |
11 highest performance HEVC video encoder. | |
12 | |
13 About HEVC | |
14 ========== | |
15 | |
16 The High Efficiency Video Coding (HEVC) was developed by the ISO/IEC | |
17 Moving Picture Experts Group (MPEG) and ITU-T Video Coding Experts Group | |
18 (VCEG), through their Joint Collaborative Team on Video Coding (JCT-VC). | |
19 HEVC is also known as ISO/IEC 23008-2 MPEG-H Part 2 and ITU-T H.265. | |
20 HEVC provides superior video quality and up to twice the data | |
21 compression as the previous standard (H.264/MPEG-4 AVC). HEVC can | |
22 support 8K Ultra High Definition video, with a picture size up to | |
23 8192x4320 pixels. | |
24 | |
25 About x265 | |
26 ========== | |
27 | |
28 The primary objective of x265 is to become the best H.265/HEVC encoder | |
29 available anywhere, offering the highest compression efficiency and the | |
30 highest performance on a wide variety of hardware platforms. The x265 | |
31 encoder is available as an open source library, published under the | |
32 GPLv2 license. It is also available under a commercial license, enabling | |
33 commercial companies to utilize and distribute x265 in their solutions | |
34 without being subject to the restrictions of the GPL license. | |
35 | |
36 x265 is developed by `MulticoreWare <http://www.multicorewareinc.com>`_, | |
37 leaders in high performance software solutions, with backing from | |
38 leading video technology providers including `Telestream | |
39 <http://www.telestream.com>`_ and `Doremi Labs | |
40 <http://www.doremilabs.com>`_ (and other companies who want to remain | |
41 anonymous at this time), and with contributions from open source | |
42 developers. x265 leverages many of the outstanding video encoding | |
43 features and optimizations from the x264 AVC encoder project. | |
44 | |
45 The x265 software is available for free under the GNU GPL 2 license, | |
46 from https://bitbucket.org/multicoreware/x265. For commercial companies | |
47 that wish to distribute x265 without being subject to the open source | |
48 requirements of the GPL 2 license, commercial licenses are available | |
49 with competitive terms. Contact license @ x265.com to inquire about | |
50 commercial license terms. | |
51 | |
52 While x265 is primarily designed as a video encoder software library, a | |
53 command-line executable is provided to facilitate testing and | |
54 development. We expect x265 to be utilized in many leading video | |
55 hardware and software products and services in the coming months. | |
56 | |
57 LEGAL NOTICES | |
58 ============= | |
59 | |
60 The x265 software is owned and copyrighted by MulticoreWare, Inc. | |
61 MulticoreWare is committed to offering the x265 software under the GNU | |
62 GPL v2 license. Companies who do not wish to integrate the x265 | |
63 Software in their products under the terms of the GPL license can | |
64 contact MulticoreWare (license @ x265.com) to obtain a commercial | |
65 license agreement. Companies who use x265 under the GPL may also wish | |
66 to work with MulticoreWare to accelerate the development of specific | |
67 features or optimized support for specific hardware or software | |
68 platforms, or to contract for support. | |
69 | |
70 The GNU GPL v2 license or the x265 commercial license agreement govern | |
71 your rights to access the copyrighted x265 software source code, but do | |
72 not cover any patents that may be applicable to the function of binary | |
73 executable software created from the x265 source code. You are | |
74 responsible for understanding the laws in your country, and for | |
75 licensing all applicable patent rights needed for use or distribution of | |
76 software applications created from the x265 source code. A good place | |
77 to start is with the `Motion Picture Experts Group - Licensing Authority | |
78 - HEVC Licensing Program <http://www.mpegla.com/main/PID/HEVC/default.aspx>`_. | |
79 | |
80 x265 is a registered trademark of MulticoreWare, Inc. The x265 logo is | |
81 a trademark of MulticoreWare, and may only be used with explicit written | |
82 permission. All rights reserved. |