HM15.rar_h265_hm_流媒体/Mpeg4/MP4_多媒体下载-pudn.com

<html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta charset="utf-8"> <meta name="generator" content="pdf2htmlEX"> <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"> <link rel="stylesheet" href="https://static.pudn.com/base/css/base.min.css"> <link rel="stylesheet" href="https://static.pudn.com/base/css/fancy.min.css"> <link rel="stylesheet" href="https://static.pudn.com/prod/directory_preview_static/62585c0492dc900e6287cbfa/raw.css"> <script src="https://static.pudn.com/base/js/compatibility.min.js"></script> <script src="https://static.pudn.com/base/js/pdf2htmlEX.min.js"></script> <script> try{ pdf2htmlEX.defaultViewer = new pdf2htmlEX.Viewer({}); }catch(e){} </script> <title></title> </head> <body> <div id="sidebar" style="display: none"> <div id="outline"> </div> </div> <div id="pf1" class="pf w0 h0" data-page-no="1"><div class="pc pc1 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/62585c0492dc900e6287cbfa/bg1.jpg"><div class="t m0 x1 h2 y1 ff1 fs0 fc0 sc0 ls0 ws0">Joint Collaborative Team on Video Coding (JCT-VC)</div><div class="t m0 x1 h3 y2 ff1 fs0 fc0 sc0 ls0 ws0">of ITU-T SG16 WP3 and ISO/IEC JTC1/SC29/WG11 Document: JCTVC-Software Manual</div><div class="t m0 x2 h3 y3 ff3 fs0 fc0 sc0 ls0 ws0">Title: HM Software Manual</div><div class="t m0 x2 h3 y4 ff3 fs0 fc0 sc0 ls0 ws0">Status: Software AHG working document</div><div class="t m0 x2 h3 y5 ff3 fs0 fc0 sc0 ls0 ws0">Purpose: Information</div><div class="t m0 x2 h3 y6 ff3 fs0 fc0 sc0 ls0 ws0">Author(s): Frank Bossen frank@bossentech.com</div><div class="t m0 x3 h3 y7 ff2 fs0 fc0 sc0 ls0 ws0">David Flynn dflynn@blackberry.com</div><div class="t m0 x3 h3 y8 ff2 fs0 fc0 sc0 ls0 ws0">Karl Sharman karl.sharman@eu.sony.com</div><div class="t m0 x3 h3 y9 ff2 fs0 fc0 sc0 ls0 ws0">Karsten Sühring karsten.suehring@hhi.fraunhofer.de</div><div class="t m0 x2 h3 ya ff3 fs0 fc0 sc0 ls0 ws0">Source: AHG chairs</div><div class="t m0 x1 h4 yb ff1 fs1 fc0 sc0 ls0 ws0">Abstract</div><div class="t m0 x1 h3 yc ff2 fs0 fc0 sc0 ls0 ws0">This document is a user manual describing usage of reference software for the HEVC project. It applies</div><div class="t m0 x1 h3 yd ff2 fs0 fc0 sc0 ls0 ws0">to version 16.16 of the software.</div><div class="t m0 x1 h4 ye ff1 fs1 fc0 sc0 ls0 ws0">Contents</div><div class="t m0 x1 h2 yf ff1 fs0 fc0 sc0 ls0 ws0">1 General Information 2</div><div class="t m0 x1 h2 y10 ff1 fs0 fc0 sc0 ls0 ws0">2 Installation and compilation 2</div><div class="t m0 x1 h2 y11 ff1 fs0 fc0 sc0 ls0 ws0">3 Using the encoder 2</div><div class="t m0 x4 h3 y12 ff2 fs0 fc0 sc0 ls0 ws0">3.1 GOP structure table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3</div><div class="t m0 x4 h3 y13 ff2 fs0 fc0 sc0 ls0 ws0">3.2 Encoder parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7</div><div class="t m0 x4 h3 y14 ff2 fs0 fc0 sc0 ls0 ws0">3.3 Encoder SEI parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21</div><div class="t m0 x4 h3 y15 ff2 fs0 fc0 sc0 ls0 ws0">3.4 Hardcoded encoder parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29</div><div class="t m0 x1 h2 y16 ff1 fs0 fc0 sc0 ls0 ws0">4 Using the decoder 30</div><div class="t m0 x4 h3 y17 ff2 fs0 fc0 sc0 ls0 ws0">4.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30</div><div class="t m0 x4 h3 y18 ff2 fs0 fc0 sc0 ls0 ws0">4.2 Using the decoder analyser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31</div><div class="t m0 x1 h4 y19 ff1 fs1 fc0 sc0 ls0 ws0">List of Tables</div><div class="t m0 x4 h3 y1a ff2 fs0 fc0 sc0 ls0 ws0">1 Available project files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3</div><div class="t m0 x4 h3 y1b ff2 fs0 fc0 sc0 ls0 ws0">2 GOP structure example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5</div><div class="t m0 x4 h3 y1c ff2 fs0 fc0 sc0 ls0 ws0">3 File, I/O and source parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7</div><div class="t m0 x4 h3 y1d ff2 fs0 fc0 sc0 ls0 ws0">4 Profile and level parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9</div><div class="t m0 x4 h3 y1e ff2 fs0 fc0 sc0 ls0 ws0">5 Unit definition parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10</div><div class="t m0 x4 h3 y1f ff2 fs0 fc0 sc0 ls0 ws0">6 Coding structure parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10</div><div class="t m0 x4 h3 y20 ff2 fs0 fc0 sc0 ls0 ws0">7 Motion estimation parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11</div><div class="t m0 x4 h3 y21 ff2 fs0 fc0 sc0 ls0 ws0">8 Mode decision parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11</div><div class="t m0 x4 h3 y22 ff2 fs0 fc0 sc0 ls0 ws0">9 Quantization parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12</div><div class="t m0 x4 h3 y23 ff2 fs0 fc0 sc0 ls0 ws0">10 Slice coding parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15</div><div class="t m0 x4 h3 y24 ff2 fs0 fc0 sc0 ls0 ws0">11 Deblocking filter parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15</div><div class="t m0 x4 h3 y25 ff2 fs0 fc0 sc0 ls0 ws0">12 Coding tools parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16</div><div class="t m0 x4 h3 y26 ff2 fs0 fc0 sc0 ls0 ws0">13 Rate control parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17</div><div class="t m0 x4 h3 y27 ff2 fs0 fc0 sc0 ls0 ws0">14 VUI parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18</div><div class="t m0 x4 h3 y28 ff2 fs0 fc0 sc0 ls0 ws0">15 Range Extensions (Version 2) tool parameters . . . . . . . . . . . . . . . . . . . . . . . 20</div><div class="t m0 x4 h3 y29 ff2 fs0 fc0 sc0 ls0 ws0">16 List of Version 1 and RExt SEI messages . . . . . . . . . . . . . . . . . . . . . . . . . 21</div><div class="t m0 x4 h3 y2a ff2 fs0 fc0 sc0 ls0 ws0">17 Buffering period SEI message encoder parameters . . . . . . . . . . . . . . . . . . . . . 22</div><div class="t m0 x4 h3 y2b ff2 fs0 fc0 sc0 ls0 ws0">18 Picture timing SEI message encoder parameters . . . . . . . . . . . . . . . . . . . . . . 22</div><div class="t m0 x4 h3 y2c ff2 fs0 fc0 sc0 ls0 ws0">19 Recovery point SEI message encoder parameters . . . . . . . . . . . . . . . . . . . . . 22</div><div class="t m0 x5 h3 y2d ff2 fs0 fc0 sc0 ls0 ws0">1 Date saved: 2017-08-07</div><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d 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<div id="pf2" class="pf w0 h0" data-page-no="2"><div class="pc pc2 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/62585c0492dc900e6287cbfa/bg2.jpg"><div class="t m0 x4 h3 y2e ff2 fs0 fc0 sc0 ls0 ws0">20 Tone mapping information SEI message encoder parameters . . . . . . . . . . . . . . . 22</div><div class="t m0 x4 h3 y2f ff2 fs0 fc0 sc0 ls0 ws0">21 Frame packing arrangement SEI message encoder parameters . . . . . . . . . . . . . . . 24</div><div class="t m0 x4 h3 y30 ff2 fs0 fc0 sc0 ls0 ws0">22 Display orientation SEI message encoder parameters . . . . . . . . . . . . . . . . . . . 24</div><div class="t m0 x4 h3 y31 ff2 fs0 fc0 sc0 ls0 ws0">23 Green Metadata SEI message encoder parameters . . . . . . . . . . . . . . . . . . . . . 25</div><div class="t m0 x4 h3 y32 ff2 fs0 fc0 sc0 ls0 ws0">24 Structure of pictures information SEI message encoder parameters . . . . . . . . . . . . 25</div><div class="t m0 x4 h3 y33 ff2 fs0 fc0 sc0 ls0 ws0">25 Active parameter sets SEI message encoder parameters . . . . . . . . . . . . . . . . . . 25</div><div class="t m0 x4 h3 y34 ff2 fs0 fc0 sc0 ls0 ws0">26 Decoding unit information SEI message encoder parameters . . . . . . . . . . . . . . . 25</div><div class="t m0 x4 h3 y35 ff2 fs0 fc0 sc0 ls0 ws0">27 Temporal sub-layer zero index SEI message encoder parameters . . . . . . . . . . . . . 25</div><div class="t m0 x4 h3 y36 ff2 fs0 fc0 sc0 ls0 ws0">28 Decoded picture hash SEI message encoder parameters . . . . . . . . . . . . . . . . . . 26</div><div class="t m0 x4 h3 y37 ff2 fs0 fc0 sc0 ls0 ws0">29 Scalable nesting SEI message encoder parameters . . . . . . . . . . . . . . . . . . . . . 26</div><div class="t m0 x4 h3 y38 ff2 fs0 fc0 sc0 ls0 ws0">30 Region refresh information SEI message encoder parameters . . . . . . . . . . . . . . . 26</div><div class="t m0 x4 h3 y39 ff2 fs0 fc0 sc0 ls0 ws0">31 No display SEI message encoder parameters . . . . . . . . . . . . . . . . . . . . . . . . 26</div><div class="t m0 x4 h3 y3a ff2 fs0 fc0 sc0 ls0 ws0">32 Time code SEI message encoder parameters . . . . . . . . . . . . . . . . . . . . . . . . 26</div><div class="t m0 x4 h3 y3b ff2 fs0 fc0 sc0 ls0 ws0">33 Mastering display colour volume SEI message encoder parameters . . . . . . . . . . . . 27</div><div class="t m0 x4 h3 y3c ff2 fs0 fc0 sc0 ls0 ws0">34 Segmented rectangular frame packing arrangement SEI message encoder parameters . . 27</div><div class="t m0 x4 h3 y3d ff2 fs0 fc0 sc0 ls0 ws0">35 Temporal motion-constrained tile sets SEI message encoder parameters . . . . . . . . . 28</div><div class="t m0 x4 h3 y3e ff2 fs0 fc0 sc0 ls0 ws0">36 Chroma resampling filter hint SEI message encoder parameters . . . . . . . . . . . . . . 28</div><div class="t m0 x4 h3 y3f ff2 fs0 fc0 sc0 ls0 ws0">37 Knee function SEI message encoder parameters . . . . . . . . . . . . . . . . . . . . . . 28</div><div class="t m0 x4 h3 y40 ff2 fs0 fc0 sc0 ls0 ws0">38 Colour remapping SEI message encoder parameters . . . . . . . . . . . . . . . . . . . . 29</div><div class="t m0 x4 h3 y41 ff2 fs0 fc0 sc0 ls0 ws0">39 CommonDef.h constants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29</div><div class="t m0 x4 h3 y42 ff2 fs0 fc0 sc0 ls0 ws0">40 Decoder options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30</div><div class="t m0 x1 h4 y43 ff1 fs1 fc0 sc0 ls0 ws0">1 General Information</div><div class="t m0 x1 h3 y44 ff2 fs0 fc0 sc0 ls0 ws0">Reference software is being made available to provide a reference implementation of the HEVC standard</div><div class="t m0 x1 h3 y45 ff2 fs0 fc0 sc0 ls0 ws0">being developed by the Joint Collaborative Team on Video Coding (JCT-VC) regrouping experts from</div><div class="t m0 x1 h3 y46 ff2 fs0 fc0 sc0 ls0 ws0">ITU-T SG 16 and ISO/IEC SC29 WG11. One of the main goals of the reference software is to provide</div><div class="t m0 x1 h3 y47 ff2 fs0 fc0 sc0 ls0 ws0">a basis upon which to conduct experiments in order to determine which coding tools provide desired</div><div class="t m0 x1 h3 y48 ff2 fs0 fc0 sc0 ls0 ws0">coding performance. It is not meant to be a particularly efficient implementation of anything, and one</div><div class="t m0 x1 h3 y49 ff2 fs0 fc0 sc0 ls0 ws0">may notice its apparent unsuitability for a particular use. It should not be construed to be a reflection of</div><div class="t m0 x1 h3 y4a ff2 fs0 fc0 sc0 ls0 ws0">how complex a production-quality implementation of a future HEVC standard would be.</div><div class="t m0 x1 h3 y4b ff2 fs0 fc0 sc0 ls0 ws0">This document aims to provide guidance on the usage of the reference software. It is widely suspected to</div><div class="t m0 x1 h3 y4c ff2 fs0 fc0 sc0 ls0 ws0">be incomplete and suggestions for improvements are welcome. Such suggestions and general inquiries</div><div class="t m0 x1 h3 y4d ff2 fs0 fc0 sc0 ls0 ws0">may be sent to the general JCT-VC email reflector on jct-vc@lists.rwth-aachen.de (registration</div><div class="t m0 x1 h3 y4e ff2 fs0 fc0 sc0 ls0 ws0">required).</div><div class="t m0 x1 h5 y4f ff1 fs2 fc0 sc0 ls0 ws0">Bug reporting</div><div class="t m0 x1 h3 y50 ff2 fs0 fc0 sc0 ls0 ws0">Bugs should be reported on the issue tracker set up at http://hevc.kw.bbc.co.uk/trac/</div><div class="t m0 x1 h4 y51 ff1 fs1 fc0 sc0 ls0 ws0">2 Installation and compilation</div><div class="t m0 x1 h3 y52 ff2 fs0 fc0 sc0 ls0 ws0">The software may be retrieved from one of the following SVN servers (mirrored):</div><div class="t m0 x6 h3 y53 ff2 fs0 fc0 sc0 ls0 ws0">• https://hevc.hhi.fraunhofer.de/svn/svn_HEVCSoftware/</div><div class="t m0 x6 h3 y54 ff2 fs0 fc0 sc0 ls0 ws0">• svn://hevc.kw.bbc.co.uk/svn/jctvc-hm/</div><div class="t m0 x1 h3 y55 ff2 fs0 fc0 sc0 ls0 ws0">Table 1 enumerates various project files that are provided for development environments.</div><div class="t m0 x1 h3 y56 ff2 fs0 fc0 sc0 ls0 ws0">For encoding large picture sizes (like UHDTV) it is strongly advised to build 64-bit binaries and to use</div><div class="t m0 x1 h3 y57 ff2 fs0 fc0 sc0 ls0 ws0">a 64-bit OS. This will allow the software to use more than 2GB of RAM.</div><div class="t m0 x1 h4 y58 ff1 fs1 fc0 sc0 ls0 ws0">3 Using the encoder</div><div class="t m0 x1 h6 y59 ff4 fs0 fc0 sc0 ls0 ws0">TAppEncoder [--help] [-c config.cfg] [--parameter=value]</div><div class="t m0 x5 h3 y2d ff2 fs0 fc0 sc0 ls0 ws0">2 Date saved: 2017-08-07</div><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a></div><div class="pi" data-data='{"ctm":[1.611850,0.000000,0.000000,1.611850,0.000000,0.000000]}'></div></div>

<div id="pf3" class="pf w0 h0" data-page-no="3"><div class="pc pc3 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/62585c0492dc900e6287cbfa/bg3.jpg"><div class="t m0 x7 h3 y5a ff2 fs0 fc0 sc0 ls0 ws0">Table 1: Available project files</div><div class="t m0 x8 h7 y5b ff2 fs3 fc0 sc0 ls0 ws0">Environment Location of project file</div><div class="t m0 x9 h7 y5c ff2 fs3 fc0 sc0 ls0 ws0">MS Visual Studio 2008 (VC9) build/HM_vc9.sln</div><div class="t m0 x9 h7 y5d ff2 fs3 fc0 sc0 ls0 ws0">MS Visual Studio 2010 (VC10) build/HM_vc2010.sln</div><div class="t m0 x9 h7 y5e ff2 fs3 fc0 sc0 ls0 ws0">MS Visual Studio 2012 (VC11) build/HM_vc2012.sln</div><div class="t m0 x9 h7 y5f ff2 fs3 fc0 sc0 ls0 ws0">MS Visual Studio 2013 (VC12) build/HM_vc2013.sln</div><div class="t m0 x9 h7 y60 ff2 fs3 fc0 sc0 ls0 ws0">Xcode HM.xcodeproj</div><div class="t m0 x9 h7 y61 ff2 fs3 fc0 sc0 ls0 ws0">Eclipse .project .cproject</div><div class="t m0 x9 h7 y62 ff2 fs3 fc0 sc0 ls0 ws0">make/gcc (e.g. Linux) build/linux/makefile</div><div class="t m0 xa h7 y63 ff2 fs3 fc0 sc0 ls0 ws0">Option Description</div><div class="t m0 xb h8 y64 ff5 fs3 fc0 sc0 ls0 ws0">--help</div><div class="t m0 xc h7 y65 ff2 fs3 fc0 sc0 ls0 ws0">Prints parameter usage.</div><div class="t m0 xb h7 y66 ff5 fs3 fc0 sc0 ls0 ws0">-c Defines configuration file to use. Multiple configuration files</div><div class="t m0 xc h7 y67 ff2 fs3 fc0 sc0 ls0 ws0">may be used with repeated –c options.</div><div class="t m0 xb h7 y68 ff5 fs3 fc0 sc0 ls0 ws0">--parameter=value Assigns value to a given parameter as further described below.</div><div class="t m0 xc h7 y69 ff2 fs3 fc0 sc0 ls0 ws0">Some parameters are also supported by shorthand “–opt value”.</div><div class="t m0 xc h7 y6a ff2 fs3 fc0 sc0 ls0 ws0">These are shown in brackets after the parameter name in the</div><div class="t m0 xc h7 y6b ff2 fs3 fc0 sc0 ls0 ws0">tables of this document</div><div class="t m0 x1 h3 y6c ff2 fs0 fc0 sc0 ls0 ws0">Sample configuration files are provided in the cfg/ folder. Parameters are defined by the last value en-</div><div class="t m0 x1 h3 y6d ff2 fs0 fc0 sc0 ls0 ws0">countered on the command line. Therefore if a setting is set via a configuration file, and then a subsequent</div><div class="t m0 x1 h3 y6e ff2 fs0 fc0 sc0 ls0 ws0">command line parameter changes that same setting, the command line parameter value will be used.</div><div class="t m0 x1 h5 y6f ff1 fs2 fc0 sc0 ls0 ws0">3.1 GOP structure table</div><div class="t m0 x1 h3 y70 ff2 fs0 fc0 sc0 ls0 ws0">Defines the cyclic GOP structure that will be used repeatedly throughout the sequence. The table should</div><div class="t m0 x1 h3 y71 ff2 fs0 fc0 sc0 ls0 ws0">contain GOPSize lines, named Frame1, Frame2, etc. The frames are listed in decoding order, so Frame1</div><div class="t m0 x1 h3 y72 ff2 fs0 fc0 sc0 ls0 ws0">is the first frame in decoding order, Frame2 is the second and so on. Among other things, the table</div><div class="t m0 x1 h3 y73 ff2 fs0 fc0 sc0 ls0 ws0">specifies all reference pictures kept by the decoder for each frame. This includes pictures that are used</div><div class="t m0 x1 h3 y74 ff2 fs0 fc0 sc0 ls0 ws0">for reference for the current picture as well as pictures that will be used for reference in the future. The</div><div class="t m0 x1 h3 y75 ff2 fs0 fc0 sc0 ls0 ws0">encoder will not automatically calculate which pictures have to be kept for future references, they must</div><div class="t m0 x1 h3 y76 ff2 fs0 fc0 sc0 ls0 ws0">be specified. Note that some specified reference frames for pictures encoded in the very first GOP after</div><div class="t m0 x1 h3 y77 ff2 fs0 fc0 sc0 ls0 ws0">an IDR frame might not be available. This is handled automatically by the encoder, so the reference</div><div class="t m0 x1 h3 y78 ff2 fs0 fc0 sc0 ls0 ws0">pictures can be given in the GOP structure table as if there were infinitely many identical GOPs before</div><div class="t m0 x1 h3 y79 ff2 fs0 fc0 sc0 ls0 ws0">the current one. Each line in the table contains the parameters used for the corresponding frame, separated</div><div class="t m0 x1 h3 y7a ff2 fs0 fc0 sc0 ls0 ws0">by whitespace:</div><div class="t m0 xd h3 y7b ff1 fs0 fc0 sc0 ls0 ws0">Type: Slice type, can be either I, P or B.</div><div class="t m0 xd h3 y7c ff1 fs0 fc0 sc0 ls0 ws0">POC: Display order of the frame within a GOP, ranging from 1 to GOPSize.</div><div class="t m0 xd h3 y7d ff1 fs0 fc0 sc0 ls0 ws0">QPOffset: QP offset is added to the QP parameter to set the final QP value to use for this frame.</div><div class="t m0 xd h3 y7e ff1 fs0 fc0 sc0 ls0 ws0">QPOffsetModelOff: Offset parameter to a linear model to adjust final QP based on QP + QPoffset.</div><div class="t m0 xd h3 y7f ff1 fs0 fc0 sc0 ls0 ws0">QPOffsetModelScale: Scale parameter to a linear model to adjust final QP based on QP + QPoff-</div><div class="t m0 xd h3 y80 ff2 fs0 fc0 sc0 ls0 ws0">set.</div><div class="t m0 xd h3 y81 ff1 fs0 fc0 sc0 ls0 ws0">SliceCbQPOffset: The slice-level Cb QP offset.</div><div class="t m0 xd h3 y82 ff1 fs0 fc0 sc0 ls0 ws0">SliceCrQPOffset: The slice-level Cr QP offset.</div><div class="t m0 xd h3 y83 ff1 fs0 fc0 sc0 ls0 ws0">QPFactor: Weight used during rate distortion optimization. Higher values mean lower quality</div><div class="t m0 xd h3 y84 ff2 fs0 fc0 sc0 ls0 ws0">and less bits. Typical range is between 0.3 and 1.</div><div class="t m0 xd h3 y85 ff1 fs0 fc0 sc0 ls0 ws0">tcOffsetDiv2: In-loop deblocking filter parameter tcOffsetDiv2 is added to the base parameter</div><div class="t m0 xd h3 y86 ff2 fs0 fc0 sc0 ls0 ws0">LoopFilterTcOffset_div2 to set the final tc_offset_div2 parameter for this picture signalled in the</div><div class="t m0 xd h3 y87 ff2 fs0 fc0 sc0 ls0 ws0">slice segment header. The final value of tc_offset_div2 shall be an integer number in the range</div><div class="t m0 xd h9 y88 ff6 fs0 fc0 sc0 ls0 ws0">−6..6.</div><div class="t m0 x5 h3 y2d ff2 fs0 fc0 sc0 ls0 ws0">3 Date saved: 2017-08-07</div></div><div class="pi" data-data='{"ctm":[1.611850,0.000000,0.000000,1.611850,0.000000,0.000000]}'></div></div>

<div id="pf4" class="pf w0 h0" data-page-no="4"><div class="pc pc4 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/62585c0492dc900e6287cbfa/bg4.jpg"><div class="t m0 xd h3 y2e ff1 fs0 fc0 sc0 ls0 ws0">betaOffsetDiv2: In-loop deblocking filter parameter betaOffsetDiv2 is added to the base parame-</div><div class="t m0 xd h3 y2f ff2 fs0 fc0 sc0 ls0 ws0">ter LoopFilterBetaOffset_div2 to set the final beta_offset_div2 parameter for this picture signalled</div><div class="t m0 xd h3 y30 ff2 fs0 fc0 sc0 ls0 ws0">in the slice segment header. The final value of beta_offset_div2 shall be an integer number in the</div><div class="t m0 xd h9 y31 ff2 fs0 fc0 sc0 ls0 ws0">range −6..6.</div><div class="t m0 xd h3 y89 ff1 fs0 fc0 sc0 ls0 ws0">temporal_id: Temporal layer of the frame. A frame cannot predict from a frame with a higher</div><div class="t m0 xd h3 y8a ff2 fs0 fc0 sc0 ls0 ws0">temporal id. If a frame with higher temporal IDs is listed among a frame’s reference pictures, it is</div><div class="t m0 xd h3 y8b ff2 fs0 fc0 sc0 ls0 ws0">not used, but is kept for possible use in future frames.</div><div class="t m0 xd h3 y36 ff1 fs0 fc0 sc0 ls0 ws0">num_ref_pics_active: Size of reference picture lists L0 and L1, indicating how many reference</div><div class="t m0 xd h3 y37 ff2 fs0 fc0 sc0 ls0 ws0">pictures in each direction that are used during coding.</div><div class="t m0 xd h3 y8c ff1 fs0 fc0 sc0 ls0 ws0">num_ref_pics: The number of reference pictures kept for this frame. This includes pictures that</div><div class="t m0 xd h3 y8d ff2 fs0 fc0 sc0 ls0 ws0">are used for reference for the current picture as well as pictures that will be used for reference in</div><div class="t m0 xd h3 y8e ff2 fs0 fc0 sc0 ls0 ws0">the future.</div><div class="t m0 xd h3 y3c ff1 fs0 fc0 sc0 ls0 ws0">reference_pictures: A space-separated list of num_ref_pics integers, specifying the POC of the</div><div class="t m0 xd h3 y3d ff2 fs0 fc0 sc0 ls0 ws0">reference pictures kept, relative the POC of the current frame. The picture list shall be ordered,</div><div class="t m0 xd h3 y3e ff2 fs0 fc0 sc0 ls0 ws0">first with negative numbers from largest to smallest, followed by positive numbers from smallest</div><div class="t m0 xd h3 y3f ff2 fs0 fc0 sc0 ls0 ws0">to largest (e.g. -1 -3 -5 1 3). Note that any pictures not supplied in this list will be discarded</div><div class="t m0 xd h3 y40 ff2 fs0 fc0 sc0 ls0 ws0">and therefore not available as reference pictures later.</div><div class="t m0 xd h3 y8f ff1 fs0 fc0 sc0 ls0 ws0">predict: Defines the value of the syntax element inter_ref_pic_set_prediction_flag. A value of 0</div><div class="t m0 xd h3 y90 ff2 fs0 fc0 sc0 ls0 ws0">indicates that the reference picture set is encoded without inter RPS prediction and the subsequent</div><div class="t m0 xd h9 y91 ff2 fs0 fc0 sc0 ls0 ws0">parameters deltaRIdx−1, deltaRPS, num_ref_idcs and Reference_idcs are ignored and do not need</div><div class="t m0 xd h3 y92 ff2 fs0 fc0 sc0 ls0 ws0">to be present. A value of 1 indicates that the reference picture set is encoded with inter prediction</div><div class="t m0 xd h9 y93 ff2 fs0 fc0 sc0 ls0 ws0">RPS using the subsequent parameters deltaRIdx−1, deltaRPS, num_ref_idcs and Reference_idcs</div><div class="t m0 xd h3 y94 ff2 fs0 fc0 sc0 ls0 ws0">in the line. A value of 2 indicates that the reference picture set is encoded with inter RPS but only</div><div class="t m0 xd h9 y95 ff2 fs0 fc0 sc0 ls0 ws0">the deltaRIdx−1 parameters is needed. The deltaRPS, num_ref_idcs and Reference_idcs values</div><div class="t m0 xd h3 y96 ff2 fs0 fc0 sc0 ls0 ws0">are automatically derived by the encoder based on the POC and refPic values of the current line</div><div class="t m0 xd h9 y97 ff2 fs0 fc0 sc0 ls0 ws0">and the RPS pointed to by the deltaRIdx−1 parameters.</div><div class="t m0 xd h9 y98 ff1 fs0 fc0 sc0 ls0 ws0">deltaRIdx−1: The difference between the index of the curent RPS and the predictor RPS minus</div><div class="t m0 xd h3 y99 ff2 fs0 fc0 sc0 ls0 ws0">1.</div><div class="t m0 xd h3 y9a ff1 fs0 fc0 sc0 ls0 ws0">deltaRPS: The difference between the POC of the predictor RPS and POC the current RPS.</div><div class="t m0 xd h3 y9b ff1 fs0 fc0 sc0 ls0 ws0">num_ref_idcs: The number of ref_idcs to encode for the current RPS. The value is equal to the</div><div class="t m0 xd h3 y9c ff2 fs0 fc0 sc0 ls0 ws0">value of num_ref_pics of the predictor RPS plus 1.</div><div class="t m0 xd h3 y9d ff1 fs0 fc0 sc0 ls0 ws0">reference_idcs: A space-separated list of num_ref_idcs integers, specifying the ref idcs of the</div><div class="t m0 xd h3 y9e ff2 fs0 fc0 sc0 ls0 ws0">inter RPS prediction. The value of ref_idcs may be 0, 1 or 2 indicating that the reference picture</div><div class="t m0 xd h3 y9f ff2 fs0 fc0 sc0 ls0 ws0">is a reference picture used by the current picture, a reference picture used for future picture or not</div><div class="t m0 xd h3 ya0 ff2 fs0 fc0 sc0 ls0 ws0">a reference picture anymore, respectively. The first num_ref_pics of ref_idcs correspond to the</div><div class="t m0 xd h3 ya1 ff2 fs0 fc0 sc0 ls0 ws0">Reference pictures in the predictor RPS. The last ref_idcs corresponds to the predictor picture.</div><div class="t m0 x1 h3 ya2 ff2 fs0 fc0 sc0 ls0 ws0">For example, consider the coding structure of Figure 1. This coding structure is of size 4. The pictures</div><div class="t m0 x1 h9 ya3 ff2 fs0 fc0 sc0 ls0 ws0">are listed in decoding order. Frame1 shall therefore describe picture with POC = 4. It references picture</div><div class="t m0 x1 h9 ya4 ff2 fs0 fc0 sc0 ls0 ws0">0, and therefore has −4 as a reference picture. Similarly, Frame2 has a POC of 2, and since it references</div><div class="t m0 x1 h3 ya5 ff2 fs0 fc0 sc0 ls0 ws0">pictures 0 and 4, its reference pictures are listed as -2 2. Frame3 is a special case: even though it only</div><div class="t m0 x1 h3 ya6 ff2 fs0 fc0 sc0 ls0 ws0">references pictures with POC 0 and 2, it also needs to include the picture with POC 4, which must be kept</div><div class="t m0 x1 h3 ya7 ff2 fs0 fc0 sc0 ls0 ws0">in order to be used as a reference picture in the future. The reference picture list for Frame3 therefore</div><div class="t m0 x1 h3 ya8 ff2 fs0 fc0 sc0 ls0 ws0">becomes -1 1 3. Frame4 has a POC of 3 and its list of reference pictures is -1 1.</div><div class="t m0 x1 h3 ya9 ff2 fs0 fc0 sc0 ls0 ws0">Inter RPS prediction may be used for Frame2, Frame3 and Frame4, hence the predict parameter is set</div><div class="t m0 x1 h9 yaa ff2 fs0 fc0 sc0 ls0 ws0">to 1 for these frames. Frame2 uses Frame1 as the predictor hence the deltaRIdx−1 is 0. Similarly for</div><div class="t m0 x1 h3 y59 ff2 fs0 fc0 sc0 ls0 ws0">Frame3 and Frame4 which use Frame2 and Frame3 as predictors, respectively. The deltaRPS is equal</div><div class="t m0 x1 h3 yab ff2 fs0 fc0 sc0 ls0 ws0">to the POC of the predictor minus the POC of the current picture, therefore the deltaRPS for Frame2 is</div><div class="t m0 x1 h9 yac ff7 fs0 fc0 sc0 ls0 ws0">4 − 2 = 2, for Frame3 is 2 − 1 = 1 and for Frame4 is 1 − 3 = −2.</div><div class="t m0 x5 h3 y2d ff2 fs0 fc0 sc0 ls0 ws0">4 Date saved: 2017-08-07</div><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a></div><div class="pi" data-data='{"ctm":[1.611850,0.000000,0.000000,1.611850,0.000000,0.000000]}'></div></div>

<div id="pf5" class="pf w0 h0" data-page-no="5"><div class="pc pc5 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/62585c0492dc900e6287cbfa/bg5.jpg"><div class="t m0 xe h3 y5a ff2 fs0 fc0 sc0 ls0 ws0">Figure 1: A GOP structure</div><div class="c xf yad w2 ha"><div class="t m0 x10 hb yae ff9 fs4 fc0 sc0 ls0 ws0">I</div><div class="t m0 x11 hb yaf ff9 fs4 fc0 sc0 ls0 ws0">B</div><div class="t m0 x12 hb yae ff9 fs4 fc0 sc0 ls0 ws0">P P</div><div class="t m0 x13 hb yb0 ff9 fs4 fc0 sc0 ls0 ws0">B B B B</div><div class="t m0 x14 hb yaf ff9 fs4 fc0 sc0 ls0 ws0">B</div><div class="t m0 x15 hb yb1 ff9 fs4 fc0 sc0 ls0 ws0">0</div><div class="t m0 x16 hb yb2 ff9 fs4 fc0 sc0 ls0 ws0">1 2</div><div class="t m0 x17 hb yb1 ff9 fs4 fc0 sc0 ls0 ws0">3</div><div class="t m0 x12 hb yb2 ff9 fs4 fc0 sc0 ls0 ws0">4</div><div class="t m0 x18 hb yb1 ff9 fs4 fc0 sc0 ls0 ws0">5 6</div><div class="t m0 x19 hb yb3 ff9 fs4 fc0 sc0 ls0 ws0">7</div><div class="t m0 x1a hb yb1 ff9 fs4 fc0 sc0 ls0 ws0">8</div><div class="t m0 x15 hb yb4 ff9 fs4 fc0 sc0 ls0 ws0">0 3</div><div class="t m0 x1b hb yb5 ff9 fs4 fc0 sc0 ls0 ws0">2 4 1</div><div class="t m0 x18 hb yb6 ff9 fs4 fc0 sc0 ls0 ws0">7</div><div class="t m0 x1c hb yb4 ff9 fs4 fc0 sc0 ls0 ws0">6 8 5</div><div class="t m0 x1d hb yb1 ff9 fs4 fc0 sc0 ls0 ws0">POC</div><div class="t m0 x0 hb yb4 ff9 fs4 fc0 sc0 ls0 ws0">Decode Order</div></div><div class="t m0 x1 h3 yb7 ff2 fs0 fc0 sc0 ls0 ws0">In Frame2, reference pictures with POC 0 and 2 are used, so the reference idcs for Frame2 are 1 1</div><div class="t m0 x1 h9 yb8 ff2 fs0 fc0 sc0 ls0 ws0">indicating that the reference picture, −4, in Frame1 is still a reference picture in Frame2 and Frame1</div><div class="t m0 x1 h3 yb9 ff2 fs0 fc0 sc0 ls0 ws0">is also a reference picture in Frame2. The reference idcs for Frame3 are 1 1 1. The first and second</div><div class="t m0 x1 h9 yba ff2 fs0 fc0 sc0 ls0 ws0">“1”s indicating that the reference pictures “−2 2” in Frame2 are still reference pictures in Frame3 and</div><div class="t m0 x1 h3 ybb ff2 fs0 fc0 sc0 ls0 ws0">the last “1” indicating that Frame2 is also a reference picture in Frame3. In Frame 4, the reference idcs</div><div class="t m0 x1 h3 ybc ff2 fs0 fc0 sc0 ls0 ws0">are 0 1 1 0. The first “0” indicates that the reference pictures “-1” in Frame 3 is no longer a reference</div><div class="t m0 x1 h9 ybd ff2 fs0 fc0 sc0 ls0 ws0">picture in Frame4. The next two “1”s indicate that the reference pictures “1 3” are now reference pictures</div><div class="t m0 x1 h3 ybe ff2 fs0 fc0 sc0 ls0 ws0">of Frame4. The final “0” indicates that Frame3 is not a reference picture.</div><div class="t m0 x1 h3 ybf ff2 fs0 fc0 sc0 ls0 ws0">In order to specify this to the encoder, the parameters in Table 2 could be used.</div><div class="t m0 x1e h3 yc0 ff2 fs0 fc0 sc0 ls0 ws0">Table 2: GOP structure example</div><div class="t m0 x1f h7 yc1 ff2 fs3 fc0 sc0 ls0 ws0">Frame1 Frame2 Frame3 Frame4</div><div class="t m0 x20 h7 yc2 ff2 fs3 fc0 sc0 ls0 ws0">Type P B B B</div><div class="t m0 x20 h7 yc3 ff2 fs3 fc0 sc0 ls0 ws0">POC 4 2 1 3</div><div class="t m0 x20 h7 yc4 ff2 fs3 fc0 sc0 ls0 ws0">QPOffset 1 2 3 3</div><div class="t m0 x20 h7 yc5 ff2 fs3 fc0 sc0 ls0 ws0">QPOffsetModelOff 0.0 0.0 0.0 0.0</div><div class="t m0 x20 h7 yc6 ff2 fs3 fc0 sc0 ls0 ws0">QPOffsetModelScale 0.0 0.0 0.0 0.0</div><div class="t m0 x20 h7 yc7 ff2 fs3 fc0 sc0 ls0 ws0">SliceCbQPOffset 0 0 0 0</div><div class="t m0 x20 h7 yc8 ff2 fs3 fc0 sc0 ls0 ws0">SliceCrQPOffset 0 0 0 0</div><div class="t m0 x20 h7 yc9 ff2 fs3 fc0 sc0 ls0 ws0">QPfactor 0.5 0.5 0.5 0.5</div><div class="t m0 x20 h7 yca ff2 fs3 fc0 sc0 ls0 ws0">tcOffsetDiv2 0 1 2 2</div><div class="t m0 x20 h7 ycb ff2 fs3 fc0 sc0 ls0 ws0">betaOffsetDiv2 0 0 0 0</div><div class="t m0 x20 h7 ycc ff2 fs3 fc0 sc0 ls0 ws0">temporal_id 0 1 2 2</div><div class="t m0 x20 h7 ycd ff2 fs3 fc0 sc0 ls0 ws0">num_ref_pics_active 1 1 1 1</div><div class="t m0 x20 h7 yce ff2 fs3 fc0 sc0 ls0 ws0">num_ref_pics 1 2 3 2</div><div class="t m0 x20 h7 ycf ff2 fs3 fc0 sc0 ls0 ws0">reference_pictures −4 −2 2 −1 1 3 −1 1</div><div class="t m0 x20 h7 yd0 ff2 fs3 fc0 sc0 ls0 ws0">predict 0 1 1 1</div><div class="t m0 x20 h7 yd1 ff2 fs3 fc0 sc0 ls0 ws0">deltaRIdx−1 0 0 0</div><div class="t m0 x20 h7 yd2 ff2 fs3 fc0 sc0 ls0 ws0">deltaRPS 2 1 −2</div><div class="t m0 x20 h7 yd3 ff2 fs3 fc0 sc0 ls0 ws0">num_ref_idcs 2 3 4</div><div class="t m0 x20 h7 yd4 ff2 fs3 fc0 sc0 ls0 ws0">reference_idcs 1 1 1 1 1 0 1 1 0</div><div class="t m0 x1 h3 yd5 ff2 fs0 fc0 sc0 ls0 ws0">Here, the frames used for prediction have been given higher quality by assigning a lower QP offset. Also,</div><div class="t m0 x1 h3 yd6 ff2 fs0 fc0 sc0 ls0 ws0">the non-reference frames have been marked as belonging to a higher temporal layer, to make it possible</div><div class="t m0 x1 h3 yd7 ff2 fs0 fc0 sc0 ls0 ws0">to decode only every other frame. Note: each line should contain information for one frame, so this</div><div class="t m0 x1 h3 yd8 ff2 fs0 fc0 sc0 ls0 ws0">configuration would be specified as:</div><div class="t m0 x1 h6 yd9 ff4 fs0 fc0 sc0 ls0 ws0">Frame1: P 4 1 0 0 0.5 0 0 0 1 1 -4 0</div><div class="t m0 x1 h6 yda ff4 fs0 fc0 sc0 ls0 ws0">Frame2: B 2 2 0 0 0.5 1 0 1 1 2 -2 2 1 0 2 2 1 1</div><div class="t m0 x1 h6 ydb ff4 fs0 fc0 sc0 ls0 ws0">Frame3: B 1 3 0 0 0.5 2 0 2 1 3 -1 1 3 1 0 1 3 1 1 1</div><div class="t m0 x1 h6 ydc ff4 fs0 fc0 sc0 ls0 ws0">Frame4: B 3 3 0 0 0.5 2 0 2 1 2 -1 1 1 0 -2 4 0 1 1 0</div><div class="t m0 x1 h9 ydd ff2 fs0 fc0 sc0 ls0 ws0">The values of deltaRIdx−1, deltaRPS, num_ref_idcs and reference idcs of FrameK can be derived from</div><div class="t m0 x1 h3 yde ff2 fs0 fc0 sc0 ls0 ws0">the POC value of Frame</div><div class="t m0 x21 hc ydf ffb fs5 fc0 sc0 ls0 ws0">K</div><div class="t m0 x22 h3 yde ff2 fs0 fc0 sc0 ls0 ws0">and the POC, num_ref_pics and reference_pictures values of Frame</div><div class="t m0 x23 hc ydf ffb fs5 fc0 sc0 ls0 ws0">M</div><div class="t m0 x24 h3 yde ff2 fs0 fc0 sc0 ls0 ws0">, where</div><div class="t m0 x1 h3 ye0 ff8 fs0 fc0 sc0 ls0 ws0">K is the index of the RPS to be inter coded and the M is the index of the reference RPS, as follows.</div><div class="t m0 x1 h3 ye1 ff2 fs0 fc0 sc0 ls0 ws0">Note: The above (automatic) generation of the inter RPS parameter values has been integrated into the</div><div class="t m0 x1 h9 ye2 ff2 fs0 fc0 sc0 ls0 ws0">encoder, and is activated by the value of predict = 2 followed by the value of deltaRIdx−1, only, as</div><div class="t m0 x5 h3 y2d ff2 fs0 fc0 sc0 ls0 ws0">5 Date saved: 2017-08-07</div><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a></div><div class="pi" data-data='{"ctm":[1.611850,0.000000,0.000000,1.611850,0.000000,0.000000]}'></div></div>