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