| 1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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| 2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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| 3 | "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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| 4 | <!ENTITY % general-entities SYSTEM "../../general.ent">
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| 5 | %general-entities;
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| 6 |
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| 7 | <!ENTITY ffmpeg-download-http
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| 8 | "http://ffmpeg.org/releases/ffmpeg-&ffmpeg-version;.tar.bz2">
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| 9 | <!ENTITY ffmpeg-download-ftp " ">
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| 10 | <!ENTITY ffmpeg-md5sum "dd71a1baedb2daa3e4d21e0651daa918">
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| 11 | <!ENTITY ffmpeg-size "6.0 MB">
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| 12 | <!ENTITY ffmpeg-buildsize "100 MB">
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| 13 | <!ENTITY ffmpeg-time "2.6 SBU">
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| 14 | ]>
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| 15 |
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| 16 | <sect1 id="ffmpeg" xreflabel="FFmpeg-&ffmpeg-version;">
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| 17 | <?dbhtml filename="ffmpeg.html"?>
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| 18 |
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| 19 | <sect1info>
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| 20 | <othername>$LastChangedBy$</othername>
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| 21 | <date>$Date$</date>
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| 22 | </sect1info>
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| 23 |
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| 24 | <title>FFmpeg-&ffmpeg-version;</title>
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| 25 |
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| 26 | <indexterm zone="ffmpeg">
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| 27 | <primary sortas="a-FFmpeg">FFmpeg</primary>
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| 28 | </indexterm>
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| 29 |
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| 30 | <sect2 role="package">
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| 31 | <title>Introduction to FFmpeg</title>
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| 32 |
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| 33 | <para>
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| 34 | <application>FFmpeg</application> is a solution to record, convert and
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| 35 | stream audio and video. It is a very fast video and audio converter and it
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| 36 | can also acquire from a live audio/video source. Designed to be intuitive,
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| 37 | the command-line interface (<command>ffmpeg</command>) tries to figure out
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| 38 | all the parameters, when possible. <application>FFmpeg</application> can
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| 39 | also convert from any sample rate to any other, and resize video on the
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| 40 | fly with a high quality polyphase filter.
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| 41 | <application>FFmpeg</application> can use a Video4Linux compatible video
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| 42 | source and any Open Sound System audio source.
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| 43 | </para>
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| 44 |
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| 45 | &lfs74_checked;
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| 46 |
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| 47 | <bridgehead renderas="sect3">Package Information</bridgehead>
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| 48 | <itemizedlist spacing="compact">
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| 49 | <listitem>
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| 50 | <para>
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| 51 | Download (HTTP): <ulink url="&ffmpeg-download-http;"/>
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| 52 | </para>
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| 53 | </listitem>
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| 54 | <listitem>
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| 55 | <para>
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| 56 | Download (FTP): <ulink url="&ffmpeg-download-ftp;"/>
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| 57 | </para>
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| 58 | </listitem>
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| 59 | <listitem>
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| 60 | <para>
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| 61 | Download MD5 sum: &ffmpeg-md5sum;
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| 62 | </para>
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| 63 | </listitem>
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| 64 | <listitem>
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| 65 | <para>
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| 66 | Download size: &ffmpeg-size;
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| 67 | </para>
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| 68 | </listitem>
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| 69 | <listitem>
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| 70 | <para>
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| 71 | Estimated disk space required: &ffmpeg-buildsize;
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| 72 | </para>
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| 73 | </listitem>
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| 74 | <listitem>
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| 75 | <para>
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| 76 | Estimated build time: &ffmpeg-time;
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| 77 | </para>
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| 78 | </listitem>
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| 79 | </itemizedlist>
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| 80 |
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| 81 | <bridgehead renderas="sect3">FFmpeg Dependencies</bridgehead>
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| 82 |
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| 83 | <bridgehead renderas="sect4">Recommended</bridgehead>
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| 84 | <para role="recommended">
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| 85 | <xref linkend="yasm"/>,
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| 86 | <xref linkend="libass"/>,
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| 87 | <xref linkend="fdk-aac"/>,
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| 88 | <xref linkend="lame"/>,
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| 89 | <xref linkend="opus"/>,
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| 90 | <xref linkend="libtheora"/>,
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| 91 | <xref linkend="libvorbis"/>,
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| 92 | <xref linkend="libvpx"/>, and
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| 93 | <xref linkend="x264"/>
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| 94 | </para>
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| 95 |
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| 96 | <bridgehead renderas="sect4">Recommended for desktop use</bridgehead>
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| 97 | <para>
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| 98 | <xref linkend="x-window-system"/>,
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| 99 | <xref linkend="alsa-lib"/>,
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| 100 | <xref linkend="sdl"/>,
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| 101 | <xref linkend="libva"/> and
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| 102 | <xref linkend="libvdpau"/> (with the corresponding driver package)
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| 103 | </para>
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| 104 |
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| 105 | <bridgehead renderas="sect4">Optional</bridgehead>
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| 106 | <para role="optional">
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| 107 | <xref linkend="faac"/>,
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| 108 | <xref linkend="freetype2"/>,
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| 109 | <xref linkend="openjpeg"/>,
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| 110 | <xref linkend="pulseaudio"/>,
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| 111 | <xref linkend="speex"/>,
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| 112 | <xref linkend="xvid"/>,
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| 113 | <xref linkend="openssl"/>,
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| 114 | <xref linkend="fontconfig"/>,
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| 115 | <ulink url="http://www.piksel.org/frei0r">frei0r</ulink>,
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| 116 | <xref linkend="gnutls"/>,
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| 117 | <ulink url="http://tipok.org.ua/node/17">libaacplus</ulink>,
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| 118 | <ulink url="http://www.videolan.org/developers/libbluray.html">libbluray</ulink>,
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| 119 | <ulink url="http://caca.zoy.org/">libcaca</ulink>,
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| 120 | <ulink url="http://www.celt-codec.org/">libcelt</ulink>,
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| 121 | <ulink url="http://ftp.gnu.org/pub/gnu/libcdio/">libcdio</ulink>,
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| 122 | <ulink url="http://sourceforge.net/projects/libdc1394">libdc1394</ulink>,
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| 123 | <ulink url="http://www.speech.cs.cmu.edu/flite/">Flite</ulink>,
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| 124 | <ulink url="http://www.quut.com/gsm/">GSM</ulink>,
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| 125 | <ulink url="https://ieee1394.wiki.kernel.org/index.php/Libraries">libiec61883</ulink>,
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| 126 | <ulink url="https://github.com/dekkers/libilbc">libilbc</ulink>,
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| 127 | <ulink url="http://sourceforge.net/projects/modplug-xmms/">libmodplug</ulink>,
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| 128 | <ulink url="http://svn.mplayerhq.hu/nut/src/trunk/">libnut</ulink> (SVN checkout),
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| 129 | <ulink url="http://sourceforge.net/projects/opencore-amr">OpenCore AMR</ulink>,
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| 130 | <ulink url="http://opencv.org/">OpenCV</ulink>,
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| 131 | <ulink url="http://sourceforge.net/projects/librtmp">librtmp</ulink>,
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| 132 | <ulink url="http://diracvideo.org/">Schroedinger</ulink>,
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| 133 | <ulink url="http://www.twolame.org/">TwoLAME</ulink>,
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| 134 | <ulink url="http://linuxtv.org/downloads/v4l-utils/">Video4Linux</ulink>,
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| 135 | <ulink url="http://sourceforge.net/projects/opencore-amr/files/vo-aacenc/">vo-aaenc</ulink>,
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| 136 | <ulink url="http://sourceforge.net/projects/opencore-amr/files/vo-amrwbenc/">vo-amrwbenc</ulink>,
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| 137 | <ulink url="http://xavs.sourceforge.net/">libxavs</ulink> (SVN checkout),
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| 138 | <ulink url="http://kcat.strangesoft.net/openal-releases/">OpenAL</ulink>, and
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| 139 | <ulink url="http://www.nongnu.org/texi2html">texi2html</ulink> (to build HTML documentation)
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| 140 | </para>
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| 141 |
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| 142 | <para condition="html" role="usernotes">
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| 143 | User Notes: <ulink url="&blfs-wiki;/ffmpeg"/>
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| 144 | </para>
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| 145 | </sect2>
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| 146 |
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| 147 | <sect2 role="installation">
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| 148 | <title>Installation of FFmpeg</title>
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| 149 |
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| 150 | <para>
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| 151 | If <application>Xorg</application> is installed in a prefix other
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| 152 | than <filename class='directory'>/usr</filename>, the build will fail. Fix
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| 153 | this by issuing the following command:
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| 154 | </para>
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| 155 |
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| 156 | <screen><userinput>export LIBRARY_PATH=$XORG_PREFIX/lib</userinput></screen>
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| 157 |
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| 158 | <para>
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| 159 | Install <application>FFmpeg</application> by running the following
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| 160 | commands:
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| 161 | </para>
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| 162 |
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| 163 | <screen><userinput>sed -i 's/-lflite"/-lflite -lasound"/' configure &&
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| 164 | ./configure --prefix=/usr \
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| 165 | --enable-gpl \
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| 166 | --enable-version3 \
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| 167 | --enable-nonfree \
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| 168 | --disable-static \
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| 169 | --enable-shared \
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| 170 | --disable-debug \
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| 171 | --enable-libass \
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| 172 | --enable-libfdk-aac \
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| 173 | --enable-libmp3lame \
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| 174 | --enable-libopus \
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| 175 | --enable-libtheora \
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| 176 | --enable-libvorbis \
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| 177 | --enable-libvpx \
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| 178 | --enable-libx264 \
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| 179 | --enable-x11grab &&
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| 180 | make &&
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| 181 | gcc tools/qt-faststart.c -o tools/qt-faststart &&
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| 182 | unset LIBRARY_PATH</userinput></screen>
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| 183 |
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| 184 | <para>
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| 185 | HTML documentation was built in the previous step if
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| 186 | <ulink url="http://www.nongnu.org/texi2html">texi2html</ulink> is
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| 187 | installed. If the HTML was built (check for any
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| 188 | <filename class="extension">.html</filename> files in the
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| 189 | <filename class="directory">doc</filename> directory) and you have
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| 190 | <xref linkend="texlive"/> installed and wish to build PDF and
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| 191 | Postscript versions of the documentation, issue the following commands:
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| 192 | </para>
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| 193 |
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| 194 | <screen><userinput>pushd doc &&
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| 195 | for DOCNAME in `basename -s .html *.html`
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| 196 | do
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| 197 | texi2pdf -b $DOCNAME.texi &&
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| 198 | texi2dvi -b $DOCNAME.texi &&
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| 199 | dvips -o $DOCNAME.ps \
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| 200 | $DOCNAME.dvi &&
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| 201 | done &&
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| 202 | popd &&
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| 203 | unset DOCNAME</userinput></screen>
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| 204 |
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| 205 | <para>
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| 206 | If you have <xref linkend="doxygen"/> installed and wish to create the API
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| 207 | documentation (takes about 300 MB of space), issue the command
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| 208 | <command>doxygen doc/Doxyfile</command>.
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| 209 | </para>
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| 210 |
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| 211 | <para>
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| 212 | To properly test the installation you must have <xref linkend="rsync"/>
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| 213 | installed and follow the instructions for the
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| 214 | <ulink url="http://ffmpeg.org/fate.html">
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| 215 | FFmpeg Automated Testing Environment</ulink>. Note that the BLFS team has
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| 216 | not performed this regression testing.
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| 217 | </para>
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| 218 |
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| 219 | <para>
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| 220 | Now, as the <systemitem class="username">root</systemitem> user:
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| 221 | </para>
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| 222 |
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| 223 | <screen role="root"><userinput>make install &&
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| 224 | install -v -m755 tools/qt-faststart /usr/bin &&
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| 225 | install -v -m755 -d /usr/share/doc/ffmpeg-&ffmpeg-version; &&
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| 226 | install -v -m644 doc/*.txt \
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| 227 | /usr/share/doc/ffmpeg-&ffmpeg-version;</userinput></screen>
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| 228 |
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| 229 | <para>
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| 230 | If HTML documentation was built, issue the following command to install it:
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| 231 | </para>
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| 232 |
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| 233 | <screen role="root"><userinput>install -v -m644 doc/*.html \
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| 234 | /usr/share/doc/ffmpeg-&ffmpeg-version;</userinput></screen>
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| 235 |
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| 236 | <para>
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| 237 | If you used <command>doxygen</command> to create the API documentation,
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| 238 | install it (another 300 MB of space) by issuing the following commands
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| 239 | as the <systemitem class="username">root</systemitem> user:
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| 240 | </para>
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| 241 |
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| 242 | <screen role="root"><userinput>install -v -m755 -d /usr/share/doc/ffmpeg-&ffmpeg-version;/api &&
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| 243 | install -v -m644 doc/doxy/html/* \
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| 244 | /usr/share/doc/ffmpeg-&ffmpeg-version;/api</userinput></screen>
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| 245 |
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| 246 | </sect2>
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| 247 |
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| 248 | <sect2 role="commands">
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| 249 | <title>Command Explanations</title>
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| 250 |
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| 251 | <para>
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| 252 | <command>sed -i ...</command>: This command adds the
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| 253 | <application>ALSA</application> library to the
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| 254 | <application>Flite</application> <envar>LDFLAGS</envar> variable and
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| 255 | enables the discovery of <application>Flite</application>.
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| 256 | </para>
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| 257 |
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| 258 | <para>
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| 259 | <parameter>--enable-gpl</parameter>: Enables the use of GPL code and
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| 260 | permits support for postprocessing, swscale and many other features.
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| 261 | </para>
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| 262 |
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| 263 | <para>
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| 264 | <parameter>--enable-version3</parameter>: Enables the use of (L)GPL
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| 265 | version 3 code.
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| 266 | </para>
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| 267 |
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| 268 | <para>
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| 269 | <parameter>--enable-nonfree</parameter>: Enables the use of nonfree
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| 270 | code. Note that the resulting libraries and binaries will be
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| 271 | unredistributable.
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| 272 | </para>
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| 273 |
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| 274 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 275 | href="../../xincludes/static-libraries.xml"/>
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| 276 |
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| 277 | <para>
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| 278 | <parameter>--enable-shared</parameter>: Enables building shared libraries,
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| 279 | otherwise only static libraries are built and installed.
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| 280 | </para>
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| 281 |
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| 282 | <para>
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| 283 | <parameter>--disable-debug</parameter>: Disables building debugging
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| 284 | symbols into the programs and libraries.
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| 285 | </para>
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| 286 |
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| 287 | <para>
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| 288 | <parameter>--enable-libass</parameter>: Enables ASS/SSA subtitle format
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| 289 | rendering via <filename class="libraryfile">libass</filename>.
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| 290 | </para>
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| 291 |
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| 292 | <para>
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| 293 | <parameter>--enable-libfdk-aac</parameter>: Enables currently the
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| 294 | highest-quality AAC audio encoding via <filename
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| 295 | class="libraryfile">libfdk-aac</filename>.
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| 296 | </para>
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| 297 |
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| 298 | <para>
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| 299 | <parameter>--enable-libmp3lame</parameter>: Enables MP3 audio encoding via
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| 300 | <filename class="libraryfile">libmp3lame</filename>.
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| 301 | </para>
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| 302 |
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| 303 | <para>
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| 304 | <parameter>--enable-libopus</parameter>: Enables Opus encoding for low
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| 305 | latency streaming via <filename class="libraryfile">libopus</filename>.
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| 306 | </para>
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| 307 |
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| 308 | <para>
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| 309 | <parameter>--enable-libvorbis --enable-libtheora</parameter>: Enables
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| 310 | Theora video encoding via <filename
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| 311 | class="libraryfile">libvorbis</filename> and <filename
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| 312 | class="libraryfile">libtheora</filename>.
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| 313 | </para>
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| 314 |
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| 315 | <para>
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| 316 | <parameter>--enable-libvorbis --enable-libvpx</parameter>: Enables WebM
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| 317 | encoding via <filename class="libraryfile">libvorbis</filename> and
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| 318 | <filename class="libraryfile">libvpx</filename>.
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| 319 | </para>
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| 320 |
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| 321 | <para>
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| 322 | <parameter>--enable-libx264</parameter>: Enables high-quality H.264/MPEG-4
|
|---|
| 323 | AVC encoding via <filename class="libraryfile">libx264</filename>.
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| 324 | </para>
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| 325 |
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| 326 | <para>
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| 327 | <parameter>--enable-x11grab</parameter>: Enables X11 grabbing.
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| 328 | </para>
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|---|
| 329 |
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| 330 | <para>
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|---|
| 331 | <command>gcc tools/qt-faststart.c -o tools/qt-faststart</command>:
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|---|
| 332 | This builds the <command>qt-faststart</command> program which can
|
|---|
| 333 | modify QuickTime formatted movies
|
|---|
| 334 | (<filename class="extension">.mov</filename> or
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| 335 | <filename class="extension">.mp4</filename>) so that the header information
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| 336 | is located at the beginning of the file instead of the end. This allows
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| 337 | the movie file to begin playing before the entire file has been downloaded.
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| 338 | </para>
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|---|
| 339 |
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| 340 | <note>
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| 341 | <para>
|
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| 342 | Support for most of the dependency packages requires using options
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|---|
| 343 | passed to the <command>configure</command> script. View the the output
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|---|
| 344 | from <command>./configure --help</command> for complete information
|
|---|
| 345 | about enabling dependency packages.
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|---|
| 346 | </para>
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|---|
| 347 | </note>
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| 348 |
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| 349 | </sect2>
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|---|
| 350 |
|
|---|
| 351 | <sect2 role="configuration">
|
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| 352 | <title>Configuring FFmpeg</title>
|
|---|
| 353 |
|
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| 354 | <sect3 id="ffmpeg-config">
|
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| 355 | <title>Config Files</title>
|
|---|
| 356 |
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| 357 | <para>
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|---|
| 358 | <filename>/etc/ffserver.conf</filename> and
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|---|
| 359 | <filename>~/.ffmpeg/ffserver-config</filename>
|
|---|
| 360 | </para>
|
|---|
| 361 |
|
|---|
| 362 | <indexterm zone="ffmpeg ffmpeg-config">
|
|---|
| 363 | <primary
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|---|
| 364 | sortas="e-AA.ffmpeg-ffserver-config">~/.ffmpeg/ffserver-config</primary>
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|---|
| 365 | </indexterm>
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|---|
| 366 |
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| 367 | <indexterm zone="ffmpeg ffmpeg-config">
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|---|
| 368 | <primary sortas="e-etc-ffserver.conf">/etc/ffserver.conf</primary>
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| 369 | </indexterm>
|
|---|
| 370 |
|
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| 371 | <para>
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|---|
| 372 | You'll find a sample <command>ffserver</command> configuration file at
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|---|
| 373 | <filename>doc/ffserver.conf</filename> in the source tree.
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| 374 | </para>
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|---|
| 375 |
|
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| 376 | </sect3>
|
|---|
| 377 |
|
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| 378 | </sect2>
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| 379 |
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| 380 | <sect2 role="content">
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| 381 | <title>Contents</title>
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| 382 |
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| 383 | <segmentedlist>
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| 384 | <segtitle>Installed Programs</segtitle>
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| 385 | <segtitle>Installed Libraries</segtitle>
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| 386 | <segtitle>Installed Directories</segtitle>
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| 387 |
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| 388 | <seglistitem>
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| 389 | <seg>
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| 390 | ffmpeg, ffplay, ffprobe, ffserver, and
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| 391 | qt-faststart
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| 392 | </seg>
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| 393 | <seg>
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| 394 | libavcodec.so, libavdevice.so, libavfilter.so,
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| 395 | libavformat.so, libavutil.so, libpostproc.so,
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| 396 | libswresample, and libswscale.so
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| 397 | </seg>
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| 398 | <seg>
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| 399 | /usr/include/libavcodec,
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| 400 | /usr/include/libavdevice,
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| 401 | /usr/include/libavfilter,
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| 402 | /usr/include/libavformat,
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| 403 | /usr/include/libavutil,
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| 404 | /usr/include/libpostproc,
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| 405 | /usr/include/libswresample
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| 406 | /usr/include/libswscale,
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| 407 | /usr/share/ffmpeg, and
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| 408 | /usr/share/doc/ffmpeg-&ffmpeg-version;
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| 409 | </seg>
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| 410 | </seglistitem>
|
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| 411 | </segmentedlist>
|
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| 412 |
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| 413 | <variablelist>
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| 414 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
|
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| 415 | <?dbfo list-presentation="list"?>
|
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| 416 | <?dbhtml list-presentation="table"?>
|
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| 417 |
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| 418 | <varlistentry id="ffmpeg-prog">
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| 419 | <term><command>ffmpeg</command></term>
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| 420 | <listitem>
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| 421 | <para>
|
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| 422 | is a command-line tool to convert video files, network streams and
|
|---|
| 423 | input from a TV card to several video formats.
|
|---|
| 424 | </para>
|
|---|
| 425 | <indexterm zone="ffmpeg ffmpeg-prog">
|
|---|
| 426 | <primary sortas="b-ffmpeg">ffmpeg</primary>
|
|---|
| 427 | </indexterm>
|
|---|
| 428 | </listitem>
|
|---|
| 429 | </varlistentry>
|
|---|
| 430 |
|
|---|
| 431 | <varlistentry id="ffplay">
|
|---|
| 432 | <term><command>ffplay</command></term>
|
|---|
| 433 | <listitem>
|
|---|
| 434 | <para>
|
|---|
| 435 | is a very simple and portable media player using the
|
|---|
| 436 | <filename>ffmpeg</filename> libraries and the SDL library.
|
|---|
| 437 | </para>
|
|---|
| 438 | <indexterm zone="ffmpeg ffplay">
|
|---|
| 439 | <primary sortas="b-ffplay">ffplay</primary>
|
|---|
| 440 | </indexterm>
|
|---|
| 441 | </listitem>
|
|---|
| 442 | </varlistentry>
|
|---|
| 443 |
|
|---|
| 444 | <varlistentry id="ffprobe">
|
|---|
| 445 | <term><command>ffprobe</command></term>
|
|---|
| 446 | <listitem>
|
|---|
| 447 | <para>
|
|---|
| 448 | gathers information from multimedia streams and prints it in a human
|
|---|
| 449 | and machine-readable fashion.
|
|---|
| 450 | </para>
|
|---|
| 451 | <indexterm zone="ffmpeg ffprobe">
|
|---|
| 452 | <primary sortas="b-ffprobe">ffprobe</primary>
|
|---|
| 453 | </indexterm>
|
|---|
| 454 | </listitem>
|
|---|
| 455 | </varlistentry>
|
|---|
| 456 |
|
|---|
| 457 | <varlistentry id="ffserver">
|
|---|
| 458 | <term><command>ffserver</command></term>
|
|---|
| 459 | <listitem>
|
|---|
| 460 | <para>
|
|---|
| 461 | is a streaming server for everything that <command>ffmpeg</command>
|
|---|
| 462 | could use as input (files, streams, TV card input, webcam, etc).
|
|---|
| 463 | </para>
|
|---|
| 464 | <indexterm zone="ffmpeg ffserver">
|
|---|
| 465 | <primary sortas="b-ffserver">ffserver</primary>
|
|---|
| 466 | </indexterm>
|
|---|
| 467 | </listitem>
|
|---|
| 468 | </varlistentry>
|
|---|
| 469 |
|
|---|
| 470 | <varlistentry id="qt-faststart">
|
|---|
| 471 | <term><command>qt-faststart</command></term>
|
|---|
| 472 | <listitem>
|
|---|
| 473 | <para>
|
|---|
| 474 | moves the index file to the front of quicktime (mov/mp4) videos.
|
|---|
| 475 | </para>
|
|---|
| 476 | <indexterm zone="ffmpeg qt-faststart">
|
|---|
| 477 | <primary sortas="b-qt-faststart">qt-faststart</primary>
|
|---|
| 478 | </indexterm>
|
|---|
| 479 | </listitem>
|
|---|
| 480 | </varlistentry>
|
|---|
| 481 |
|
|---|
| 482 | <varlistentry id="libavcodec">
|
|---|
| 483 | <term><filename class="libraryfile">libavcodec.so</filename></term>
|
|---|
| 484 | <listitem>
|
|---|
| 485 | <para>
|
|---|
| 486 | is a library containing the <application>FFmpeg</application> codecs
|
|---|
| 487 | (both encoding and decoding).
|
|---|
| 488 | </para>
|
|---|
| 489 | <indexterm zone="ffmpeg libavcodec">
|
|---|
| 490 | <primary sortas="c-libavcodec">libavcodec.so</primary>
|
|---|
| 491 | </indexterm>
|
|---|
| 492 | </listitem>
|
|---|
| 493 | </varlistentry>
|
|---|
| 494 |
|
|---|
| 495 | <varlistentry id="libavdevice">
|
|---|
| 496 | <term><filename class="libraryfile">libavdevice.so</filename></term>
|
|---|
| 497 | <listitem>
|
|---|
| 498 | <para>
|
|---|
| 499 | is the <application>FFmpeg</application> device handling library.
|
|---|
| 500 | </para>
|
|---|
| 501 | <indexterm zone="ffmpeg libavdevice">
|
|---|
| 502 | <primary sortas="c-libavdevice">libavdevice.so</primary>
|
|---|
| 503 | </indexterm>
|
|---|
| 504 | </listitem>
|
|---|
| 505 | </varlistentry>
|
|---|
| 506 |
|
|---|
| 507 | <varlistentry id="libavfilter">
|
|---|
| 508 | <term><filename class="libraryfile">libavfilter.so</filename></term>
|
|---|
| 509 | <listitem>
|
|---|
| 510 | <para>
|
|---|
| 511 | is a library of filters that can alter video or audio between the
|
|---|
| 512 | decoder and the encoder (or output).
|
|---|
| 513 | </para>
|
|---|
| 514 | <indexterm zone="ffmpeg libavfilter">
|
|---|
| 515 | <primary sortas="c-libavfilter">libavfilter.so</primary>
|
|---|
| 516 | </indexterm>
|
|---|
| 517 | </listitem>
|
|---|
| 518 | </varlistentry>
|
|---|
| 519 |
|
|---|
| 520 | <varlistentry id="libavformat">
|
|---|
| 521 | <term><filename class="libraryfile">libavformat.so</filename></term>
|
|---|
| 522 | <listitem>
|
|---|
| 523 | <para>
|
|---|
| 524 | is a library containing the file formats handling (mux and demux
|
|---|
| 525 | code for several formats) used by <command>ffplay</command> as well
|
|---|
| 526 | as allowing the generation of audio or video streams.
|
|---|
| 527 | </para>
|
|---|
| 528 | <indexterm zone="ffmpeg libavformat">
|
|---|
| 529 | <primary sortas="c-libavformat">libavformat.so</primary>
|
|---|
| 530 | </indexterm>
|
|---|
| 531 | </listitem>
|
|---|
| 532 | </varlistentry>
|
|---|
| 533 |
|
|---|
| 534 | <varlistentry id="libavutil">
|
|---|
| 535 | <term><filename class="libraryfile">libavutil.so</filename></term>
|
|---|
| 536 | <listitem>
|
|---|
| 537 | <para>
|
|---|
| 538 | is the <application>FFmpeg</application> utility library.
|
|---|
| 539 | </para>
|
|---|
| 540 | <indexterm zone="ffmpeg libavutil">
|
|---|
| 541 | <primary sortas="c-libavutil">libavutil.so</primary>
|
|---|
| 542 | </indexterm>
|
|---|
| 543 | </listitem>
|
|---|
| 544 | </varlistentry>
|
|---|
| 545 |
|
|---|
| 546 | <varlistentry id="libpostproc">
|
|---|
| 547 | <term><filename class="libraryfile">libpostproc.so</filename></term>
|
|---|
| 548 | <listitem>
|
|---|
| 549 | <para>
|
|---|
| 550 | is the <application>FFmpeg</application> post processing library.
|
|---|
| 551 | </para>
|
|---|
| 552 | <indexterm zone="ffmpeg libpostproc">
|
|---|
| 553 | <primary sortas="c-libpostproc">libpostproc.so</primary>
|
|---|
| 554 | </indexterm>
|
|---|
| 555 | </listitem>
|
|---|
| 556 | </varlistentry>
|
|---|
| 557 |
|
|---|
| 558 | <varlistentry id="libswresample">
|
|---|
| 559 | <term><filename class="libraryfile">libswresample.so</filename></term>
|
|---|
| 560 | <listitem>
|
|---|
| 561 | <para>
|
|---|
| 562 | is the <application>FFmpeg</application> audio rescaling library,
|
|---|
| 563 | it contains functions for converting audio sample formats.
|
|---|
| 564 | </para>
|
|---|
| 565 | <indexterm zone="ffmpeg libswresample">
|
|---|
| 566 | <primary sortas="c-libswresample">libswresample.so</primary>
|
|---|
| 567 | </indexterm>
|
|---|
| 568 | </listitem>
|
|---|
| 569 | </varlistentry>
|
|---|
| 570 |
|
|---|
| 571 | <varlistentry id="libswscale">
|
|---|
| 572 | <term><filename class="libraryfile">libswscale.so</filename></term>
|
|---|
| 573 | <listitem>
|
|---|
| 574 | <para>
|
|---|
| 575 | is the <application>FFmpeg</application> image rescaling library.
|
|---|
| 576 | </para>
|
|---|
| 577 | <indexterm zone="ffmpeg libswscale">
|
|---|
| 578 | <primary sortas="c-libswscale">libswscale.so</primary>
|
|---|
| 579 | </indexterm>
|
|---|
| 580 | </listitem>
|
|---|
| 581 | </varlistentry>
|
|---|
| 582 |
|
|---|
| 583 | </variablelist>
|
|---|
| 584 |
|
|---|
| 585 | </sect2>
|
|---|
| 586 |
|
|---|
| 587 | </sect1>
|
|---|
