[48b7295] | 1 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN"
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| 2 | "http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd" [
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| 3 | <!ENTITY % general-entities SYSTEM "../../general.ent">
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| 4 | %general-entities;
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[e9d672f] | 5 |
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[48b7295] | 6 | <!ENTITY xvid-download-http "http://files.xvid.org/downloads/xvidcore-&xvid-version;.tar.bz2">
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| 7 | <!ENTITY xvid-download-ftp " ">
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[63d8ddf6] | 8 | <!ENTITY xvid-md5-sum "e8ffc32146991fcff286ccdcd6a16a49">
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[e9d672f] | 9 | <!ENTITY xvid-size "541 KB">
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| 10 | <!ENTITY xvid-buildsize "7.1 MB">
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[48b7295] | 11 | <!ENTITY xvid-time "0.19 SBU">
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| 12 | ]>
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| 13 |
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[d374b41] | 14 | <sect1 id="xvid" xreflabel="XviD-&xvid-version;">
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[a0f03b0] | 15 | <sect1info>
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[5cd0959d] | 16 | <othername>$LastChangedBy$</othername>
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| 17 | <date>$Date$</date>
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[a0f03b0] | 18 | </sect1info>
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[dd3f20f0] | 19 | <?dbhtml filename="xvid.html"?>
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[d374b41] | 20 | <title>XviD-&xvid-version;</title>
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[9a2b9dcb] | 21 |
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[48b7295] | 22 | <sect2>
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| 23 | <title>Introduction to <application>XviD</application></title>
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| 24 |
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| 25 | <!--
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| 26 | OpenDivX or Xvid?
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| 27 |
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| 28 | OpenDivX is a free implementation of the mpeg4-codec. Alas, the
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| 29 | developers at ProjectMayo didn't gratefully release their actual source
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| 30 | in compileable versions, so the displeasure of the users majority
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| 31 | canalized into a new project named Xvid.
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| 32 |
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| 33 | Xvid development was interrupted in Autumn 2002 due to a code-theft
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| 34 | the developers at Sigma design committed but it is continued now.
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| 35 |
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| 36 | For worse luck, OpenDivX and Xvid are using the same header file
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| 37 | names (an issue that wouldn't be resolved easily) and function
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| 38 | namespace, so you'll have to choose which one to use.
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| 39 |
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| 40 | I personally vote for Xvid, because the installation from sources
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| 41 | is much smoother. If you use mencoder and transcode at the same time,
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| 42 | you may want to choose different codecs for each.
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| 43 | -->
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| 44 |
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| 45 | <para><application>XviD</application> is a <acronym>MPEG</acronym>-4
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| 46 | compliant video <acronym>CODEC</acronym>.</para>
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| 47 |
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| 48 | <sect3><title>Package information</title>
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| 49 | <itemizedlist spacing='compact'>
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[e9d672f] | 50 | <listitem><para>Download (HTTP):
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| 51 | <ulink url="&xvid-download-http;"/></para></listitem>
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| 52 | <listitem><para>Download (FTP):
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| 53 | <ulink url="&xvid-download-ftp;"/></para></listitem>
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[dc2f5ad] | 54 | <listitem><para>Download MD5 Sum: &xvid-md5-sum;</para></listitem>
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[48b7295] | 55 | <listitem><para>Download size: &xvid-size;</para></listitem>
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[e9d672f] | 56 | <listitem><para>Estimated Disk space required:
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| 57 | &xvid-buildsize;</para></listitem>
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| 58 | <listitem><para>Estimated build time:
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| 59 | &xvid-time;</para></listitem></itemizedlist>
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[48b7295] | 60 | </sect3>
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| 61 |
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| 62 | <sect3><title><application>XviD</application> dependencies</title>
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| 63 | <sect4><title>Optional</title>
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[e9d672f] | 64 | <para><xref linkend="NASM"/></para></sect4>
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[48b7295] | 65 | </sect3>
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| 66 |
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| 67 | </sect2>
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| 68 |
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| 69 | <sect2>
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| 70 | <title>Installation of <application>XviD</application></title>
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| 71 |
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[e9d672f] | 72 | <para>Install <application>XviD</application> by running the following
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| 73 | commands:</para>
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[48b7295] | 74 |
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| 75 | <screen><userinput><command>cd build/generic &&
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| 76 | ./configure --prefix=/usr &&
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| 77 | make &&
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| 78 | make install &&
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| 79 | ln -sf libxvidcore.so.4.0 /usr/lib/libxvidcore.so.4 &&
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| 80 | ln -sf libxvidcore.so.4 /usr/lib/libxvidcore.so</command></userinput></screen>
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| 81 |
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| 82 | </sect2>
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| 83 |
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| 84 | <sect2>
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| 85 | <title>Command explanations</title>
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| 86 |
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| 87 | <para><command>ln -s libxvidcore.so.4 /usr/lib/libxvidcore.so</command>:
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| 88 | This command makes applications linked against
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| 89 | <filename class="libraryfile">.so</filename> names, link to
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| 90 | <filename class="libraryfile">.so.<replaceable>MAJOR</replaceable></filename>.
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| 91 | This ensures better binary compatibility, as
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| 92 | <application>XviD</application> developers take care not changing the
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| 93 | <replaceable>MAJOR</replaceable> number until there is an incompatible
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| 94 | <acronym>ABI</acronym> change.</para>
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| 95 |
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| 96 | </sect2>
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| 97 |
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| 98 | <sect2>
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| 99 | <title>Contents</title>
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| 100 |
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[e9d672f] | 101 | <para>The <application>XviD</application> core package contains the
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| 102 | <filename class="libraryfile">libxvidcore</filename> library.</para>
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[48b7295] | 103 |
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| 104 | </sect2>
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| 105 |
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| 106 | <sect2><title>Description</title>
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| 107 |
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| 108 | <sect3><title>libxvidcore</title>
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| 109 | <para><filename class="libraryfile">libxvidcore</filename> provides
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| 110 | functions to encode and decode most <acronym>MPEG</acronym>-4 video
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| 111 | data.</para></sect3>
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| 112 |
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| 113 | <!--
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| 114 | <para>Following features of MPEG-4 are supported:</para>
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| 115 | <para><emphasis>I, P Frame encoding</emphasis></para>
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| 116 | <para>I-Frames are image frames, while P-Frames are Pattern Frames.
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| 117 | Image Frames contain full images. P-Frames contain patterns of what changes in
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| 118 | the image, thusly saving a lot of space.</para>
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| 119 | <para><emphasis>PMVFast and EPZS with diamond a sqare pattern motion
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| 120 | estimation</emphasis></para>
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| 121 | <para>Fast Motion detection that can refer a square or diamond
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| 122 | shaped pattern to different directions.</para>
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| 123 | <para><emphasis>inter4v mode</emphasis></para>
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| 124 | <para>Fast interpolation ability.</para>
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| 125 | <para><emphasis>fullpixel and halfpixel precision</emphasis></para>
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| 126 | <para>Even halfpixel movements can be encoded. Better precision
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| 127 | results in better compression at better quality.</para>
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| 128 | <para><emphasis>both MPEG-4 and H263 quantizations</emphasis></para>
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| 129 | <para>MPEG-4 is the standard DivX was derived from. H263 is a
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| 130 | slightly changed subset of that standard made by Microsoft. Quantization
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| 131 | means to map the quantity of color values to numbers.</para>
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| 132 | <para><emphasis>custom quant matrices</emphasis></para>
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| 133 | <para>The quantization can be done using custom matrices,
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| 134 | possibly giving better results if the matrix is made to suit the video
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| 135 | data. Every normal user should be fine with the default matrix that comes
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| 136 | with <application>XviD</application>.</para>
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| 137 | <para><emphasis>Adaptive quantization / Luminance masking</emphasis></para>
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| 138 | <para>Qantization and Luminance masking are variant, depending
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| 139 | on the input material, therefore providing better results on dark or very
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| 140 | contrasting images.</para>
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| 141 | -->
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| 142 |
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| 143 | </sect2>
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[9a2b9dcb] | 144 |
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| 145 | </sect1>
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| 146 |
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