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 "http://ffmpeg.org/releases/ffmpeg-&ffmpeg-version;.tar.bz2">
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8 | <!ENTITY ffmpeg-download-ftp " ">
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9 | <!ENTITY ffmpeg-md5sum "9e6163b09b7b9331b834d80874c2c0ff">
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10 | <!ENTITY ffmpeg-size "7.1 MB">
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11 | <!ENTITY ffmpeg-buildsize "130 MB (additional 866 MB for docs and 1902 MB to run the FATE tests)">
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12 | <!ENTITY ffmpeg-time "3.5 SBU (additional 1.1 SBU for docs and 4.8 SBU to run the FATE tests, after sample files are downloaded)">
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13 | ]>
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14 |
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15 | <sect1 id="ffmpeg" xreflabel="FFmpeg-&ffmpeg-version;">
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16 | <?dbhtml filename="ffmpeg.html"?>
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17 |
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18 | <sect1info>
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19 | <othername>$LastChangedBy$</othername>
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20 | <date>$Date$</date>
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21 | </sect1info>
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22 |
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23 | <title>FFmpeg-&ffmpeg-version;</title>
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24 |
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25 | <indexterm zone="ffmpeg">
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26 | <primary sortas="a-FFmpeg">FFmpeg</primary>
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27 | </indexterm>
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28 |
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29 | <sect2 role="package">
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30 | <title>Introduction to FFmpeg</title>
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31 |
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32 | <para>
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33 | <application>FFmpeg</application> is a solution to record, convert and
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34 | stream audio and video. It is a very fast video and audio converter and it
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35 | can also acquire from a live audio/video source. Designed to be intuitive,
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36 | the command-line interface (<command>ffmpeg</command>) tries to figure out
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37 | all the parameters, when possible. <application>FFmpeg</application> can
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38 | also convert from any sample rate to any other, and resize video on the
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39 | fly with a high quality polyphase filter.
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40 | <application>FFmpeg</application> can use a Video4Linux compatible video
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41 | source and any Open Sound System audio source.
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42 | </para>
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43 |
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44 | &lfs76_checked;
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45 |
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46 | <bridgehead renderas="sect3">Package Information</bridgehead>
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47 | <itemizedlist spacing="compact">
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48 | <listitem>
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49 | <para>
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50 | Download (HTTP): <ulink url="&ffmpeg-download-http;"/>
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51 | </para>
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52 | </listitem>
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53 | <listitem>
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54 | <para>
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55 | Download (FTP): <ulink url="&ffmpeg-download-ftp;"/>
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56 | </para>
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57 | </listitem>
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58 | <listitem>
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59 | <para>
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60 | Download MD5 sum: &ffmpeg-md5sum;
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61 | </para>
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62 | </listitem>
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63 | <listitem>
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64 | <para>
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65 | Download size: &ffmpeg-size;
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66 | </para>
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67 | </listitem>
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68 | <listitem>
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69 | <para>
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70 | Estimated disk space required: &ffmpeg-buildsize;
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71 | </para>
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72 | </listitem>
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73 | <listitem>
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74 | <para>
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75 | Estimated build time: &ffmpeg-time;
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76 | </para>
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77 | </listitem>
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78 | </itemizedlist>
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79 |
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80 | <bridgehead renderas="sect3">FFmpeg Dependencies</bridgehead>
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81 |
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82 | <bridgehead renderas="sect4">Recommended</bridgehead>
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83 | <para role="recommended">
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84 | <xref linkend="fdk-aac"/>,
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85 | <xref linkend="lame"/>,
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86 | <xref linkend="libass"/>,
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87 | <xref linkend="libtheora"/>,
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88 | <xref linkend="libvorbis"/>,
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89 | <xref linkend="libvpx"/>,
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90 | <xref linkend="yasm"/>, and
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91 | <xref linkend="x264"/>
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92 | </para>
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93 |
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94 | <bridgehead renderas="sect4">Recommended for desktop use</bridgehead>
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95 | <para>
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96 | <xref linkend="alsa-lib"/>,
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97 | <xref linkend="libva"/>,
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98 | <xref linkend="libvdpau"/> (with the corresponding driver package),
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99 | <xref linkend="sdl"/>, and
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100 | <xref linkend="x-window-system"/>,
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101 | </para>
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102 |
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103 | <bridgehead renderas="sect4">Optional</bridgehead>
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104 | <para role="optional">
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105 | <xref linkend="faac"/>,
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106 | <xref linkend="freetype2"/>,
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107 | <xref linkend="fontconfig"/>,
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108 | <xref linkend="gnutls"/>,
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109 | <xref linkend="libwebp"/>,
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110 | <xref linkend="openjpeg"/>,
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111 | <xref linkend="openssl"/>,
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112 | <xref linkend="opus"/>,
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113 | <xref linkend="pulseaudio"/>,
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114 | <xref linkend="speex"/>,
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115 | <xref linkend="xvid"/>,
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116 | <ulink url="http://www.speech.cs.cmu.edu/flite/">Flite</ulink>,
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117 | <ulink url="https://files.dyne.org/frei0r/snapshots/">frei0r</ulink>,
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118 | <ulink url="http://www.quut.com/gsm/">GSM</ulink>,
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119 | <ulink url="http://www.ladspa.org/">LADSPA</ulink>,
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120 | <ulink url="http://tipok.org.ua/node/17">libaacplus</ulink>,
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121 | <ulink url="http://www.videolan.org/developers/libbluray.html">libbluray</ulink>,
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122 | <ulink url="http://caca.zoy.org/">libcaca</ulink>,
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123 | <ulink url="http://ftp.gnu.org/pub/gnu/libcdio/">libcdio</ulink>,
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124 | <ulink url="http://www.celt-codec.org/">libcelt</ulink>,
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125 | <ulink url="http://sourceforge.net/projects/libdc1394">libdc1394</ulink>,
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126 | <ulink url="https://ieee1394.wiki.kernel.org/index.php/Libraries">libiec61883</ulink>,
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127 | <ulink url="https://github.com/dekkers/libilbc">libilbc</ulink>,
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128 | <ulink url="http://sourceforge.net/projects/modplug-xmms/">libmodplug</ulink>,
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129 | <ulink url="https://github.com/Distrotech/libnut">libnut</ulink> (Git checkout),
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130 | <ulink url="http://rtmpdump.mplayerhq.hu/">librtmp</ulink>,
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131 | <ulink url="http://www.libssh.org/">libssh</ulink>,
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132 | <ulink url="http://xavs.sourceforge.net/">libxavs</ulink> (SVN checkout),
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133 | <ulink url="http://kcat.strangesoft.net/openal-releases/">OpenAL</ulink>,
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134 | <ulink url="http://sourceforge.net/projects/opencore-amr">OpenCore AMR</ulink>,
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135 | <ulink url="http://opencv.org/">OpenCV</ulink>,
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136 | <ulink url="http://diracvideo.org/">Schroedinger</ulink>,
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137 | <ulink url="http://www.nongnu.org/texi2html">texi2html</ulink> (to build HTML documentation),
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138 | <ulink url="http://www.twolame.org/">TwoLAME</ulink>,
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139 | <ulink url="http://linuxtv.org/downloads/v4l-utils/">Video4Linux</ulink>,
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140 | <ulink url="http://sourceforge.net/projects/opencore-amr/files/vo-aacenc/">vo-aaenc</ulink>,
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141 | <ulink url="http://sourceforge.net/projects/opencore-amr/files/vo-amrwbenc/">vo-amrwbenc</ulink>,
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142 | <ulink url="http://xavs.sourceforge.net/">libxavs</ulink> (SVN checkout),
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143 | <ulink url="http://kcat.strangesoft.net/openal-releases/">OpenAL</ulink>, and
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144 | <ulink url="http://www.videolan.org/developers/x265.html">x265 (H.265/MPEG-H HEVC)</ulink>
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145 | </para>
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146 |
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147 | <para condition="html" role="usernotes">
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148 | User Notes: <ulink url="&blfs-wiki;/ffmpeg"/>
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149 | </para>
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150 | </sect2>
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151 |
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152 | <sect2 role="installation">
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153 | <title>Installation of FFmpeg</title>
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154 |
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155 | <para>
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156 | Install <application>FFmpeg</application> by running the following
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157 | commands:
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158 | </para>
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159 |
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160 | <screen><userinput>sed -i 's/-lflite"/-lflite -lasound"/' configure &&
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161 | ./configure --prefix=/usr \
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162 | --enable-gpl \
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163 | --enable-version3 \
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164 | --enable-nonfree \
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165 | --disable-static \
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166 | --enable-shared \
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167 | --disable-debug \
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168 | --enable-libass \
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169 | --enable-libfdk-aac \
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170 | --enable-libmp3lame \
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171 | --enable-libtheora \
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172 | --enable-libvorbis \
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173 | --enable-libvpx \
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174 | --enable-libx264 \
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175 | --enable-x11grab \
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176 | --docdir=/usr/share/doc/ffmpeg-&ffmpeg-version; &&
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177 | make &&
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178 | gcc tools/qt-faststart.c -o tools/qt-faststart</userinput></screen>
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179 |
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180 | <para>
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181 | HTML documentation was built in the previous step. If you have
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182 | <xref linkend="texlive"/> installed and wish to build PDF and
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183 | Postscript versions of the documentation, issue the following commands:
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184 | </para>
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185 |
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186 | <screen><userinput>sed -i '$s/$/\n\n@bye/' doc/{git-howto,nut,fate}.texi &&
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187 | sed -i '/machine:i386/ s/\\/@backslashchar{}/g' doc/platform.texi &&
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188 |
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189 | pushd doc &&
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190 | for DOCNAME in `basename -s .html *.html`
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191 | do
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192 | texi2pdf -b $DOCNAME.texi &&
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193 | texi2dvi -b $DOCNAME.texi &&
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194 | dvips -o $DOCNAME.ps \
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195 | $DOCNAME.dvi
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196 | done &&
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197 | popd &&
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198 | unset DOCNAME</userinput></screen>
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199 |
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200 | <para>
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201 | If you have <xref linkend="doxygen"/> installed and wish to create the API
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202 | documentation (takes about 350 MB of space), issue the command
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203 | <command>doxygen doc/Doxyfile</command>.
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204 | </para>
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205 |
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206 | <para>
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207 | The fate-suite tests include comparisons with installed files, and should
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208 | not be run before the package is installed. Therefore, if you desire to
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209 | run them, instructions are given further below.
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210 | </para>
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211 |
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212 | <para>
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213 | Now, as the <systemitem class="username">root</systemitem> user:
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214 | </para>
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215 |
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216 | <screen role="root"><userinput>make install &&
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217 | install -v -m755 tools/qt-faststart /usr/bin &&
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218 | install -v -m644 doc/*.txt \
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219 | /usr/share/doc/ffmpeg-&ffmpeg-version;</userinput></screen>
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220 |
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221 | <para>
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222 | If PDF and Postscript documentations were built, issue the following
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223 | commands, as the <systemitem class="username">root</systemitem> user, to
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224 | install them:
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225 | </para>
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226 |
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227 | <screen role="root"><userinput>install -v -m644 doc/*.pdf \
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228 | /usr/share/doc/ffmpeg-&ffmpeg-version; &&
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229 | install -v -m644 doc/*.ps \
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230 | /usr/share/doc/ffmpeg-&ffmpeg-version;</userinput></screen>
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231 |
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232 | <para>
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233 | If you used <command>doxygen</command> to create the API documentation,
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234 | install it (another 300 MB of space) by issuing the following commands
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235 | as the <systemitem class="username">root</systemitem> user:
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236 | </para>
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237 |
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238 | <screen role="root"><userinput>install -v -m755 -d /usr/share/doc/ffmpeg-&ffmpeg-version;/api &&
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239 | cp -vr doc/doxy/html/* /usr/share/doc/ffmpeg-&ffmpeg-version;/api &&
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240 | find /usr/share/doc/ffmpeg-&ffmpeg-version;/api -type f -exec chmod -c 0644 "{}" ";" &&
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241 | find /usr/share/doc/ffmpeg-&ffmpeg-version;/api -type d -exec chmod -c 0755 "{}" ";"</userinput></screen>
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242 |
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243 | <para>
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244 | To properly test the installation you must have <xref linkend="rsync"/>
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245 | installed and follow the instructions for the <ulink
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246 | url="http://www.ffmpeg.org/fate.html"> FFmpeg Automated Testing
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247 | Environment</ulink> (FATE). First, about 879 MB of sample files used to
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248 | run FATE are downloaded with the command:
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249 | </para>
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250 |
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251 | <screen><userinput>make fate-rsync SAMPLES=fate-suite/</userinput></screen>
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252 |
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253 | <para>
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254 | The <filename class="directory">fate-suite</filename> directory is
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255 | created and the files are downloaded there. That command actually runs
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256 | <command>rsync -vrltLW --timeout=60 --contimeout=60
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257 | rsync://fate-suite.ffmpeg.org/fate-suite/ fate-suite/</command> command,
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258 | thus you may want to compress and keep this directory for testing again,
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259 | in another system, or when a new version of ffmpeg is launched. Then, you
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260 | unpack the sample files in the source directory, and run, again, the
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261 | <command>make</command> command above, to sync with the repository. Now,
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262 | the download size and time are drastically reduced. Estimated values in
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263 | "Package Information" do not include the download SBU. Next, FATE is
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264 | executed, with the commands (you obtain a number of tests greater than
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265 | 2000):
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266 | </para>
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267 |
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268 | <screen><userinput>make fate SAMPLES=fate-suite/ | tee ../fate.log &&
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269 | grep ^TEST ../fate.log | wc -l</userinput></screen>
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270 |
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271 | </sect2>
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272 |
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273 | <sect2 role="commands">
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274 | <title>Command Explanations</title>
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275 |
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276 | <para>
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277 | <command>sed -i ... configure</command>: This command adds the
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278 | <application>ALSA</application> library to the
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279 | <application>Flite</application> <envar>LDFLAGS</envar> variable and
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280 | enables the discovery of <application>Flite</application>.
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281 | </para>
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282 |
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283 | <para>
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284 | <command>sed -i ... texi</command>: Fix some .texi files for
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285 | documentation builds.
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286 | </para>
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287 |
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288 | <para>
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289 | <command>find ... ";"</command>: Fix permissions of documentation files
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290 | and directories.
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291 | </para>
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292 |
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293 | <para>
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294 | <option>--enable-libfreetype</option>: Enables
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295 | <application>Freetype</application> support.
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296 | </para>
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297 |
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298 | <para>
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299 | <parameter>--enable-gpl</parameter>: Enables the use of GPL code and
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300 | permits support for postprocessing, swscale and many other features.
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301 | </para>
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302 |
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303 | <para>
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304 | <parameter>--enable-version3</parameter>: Enables the use of (L)GPL
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305 | version 3 code.
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306 | </para>
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307 |
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308 | <para>
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309 | <parameter>--enable-nonfree</parameter>: Enables the use of nonfree code.
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310 | Note that the resulting libraries and binaries will be unredistributable.
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311 | </para>
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312 |
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313 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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314 | href="../../xincludes/static-libraries.xml"/>
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315 |
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316 | <para>
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317 | <parameter>--enable-shared</parameter>: Enables building shared
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318 | libraries, otherwise only static libraries are built and installed.
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319 | </para>
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320 |
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321 | <para>
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322 | <parameter>--disable-debug</parameter>: Disables building debugging
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323 | symbols into the programs and libraries.
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324 | </para>
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325 |
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326 | <para>
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327 | <parameter>--enable-libass</parameter>: Enables ASS/SSA subtitle format
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328 | rendering via <filename class="libraryfile">libass</filename>.
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329 | </para>
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330 |
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331 | <para>
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332 | <parameter>--enable-libfdk-aac</parameter>: Enables currently the
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333 | highest-quality AAC audio encoding via <filename
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334 | class="libraryfile">libfdk-aac</filename>.
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335 | </para>
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336 |
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337 | <para>
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338 | <parameter>--enable-libmp3lame</parameter>: Enables MP3 audio encoding
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339 | via <filename class="libraryfile">libmp3lame</filename>.
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340 | </para>
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341 |
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342 | <para>
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343 | <parameter>--enable-libvorbis --enable-libtheora</parameter>: Enables
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344 | Theora video encoding via <filename
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345 | class="libraryfile">libvorbis</filename> and <filename
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346 | class="libraryfile">libtheora</filename>.
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347 | </para>
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348 |
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349 | <para>
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350 | <parameter>--enable-libvorbis --enable-libvpx</parameter>: Enables WebM
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351 | encoding via <filename class="libraryfile">libvorbis</filename> and
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352 | <filename class="libraryfile">libvpx</filename>.
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353 | </para>
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354 |
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355 | <para>
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356 | <parameter>--enable-libx264</parameter>: Enables high-quality
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357 | H.264/MPEG-4 AVC encoding via <filename
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358 | class="libraryfile">libx264</filename>.A
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359 | </para>
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360 |
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361 | <para>
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362 | <parameter>--enable-x11grab</parameter>: Enables X11 grabbing.
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363 | </para>
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364 |
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365 | <para>
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366 | <command>gcc tools/qt-faststart.c -o tools/qt-faststart</command>: This
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367 | builds the <command>qt-faststart</command> program which can modify
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368 | QuickTime formatted movies (<filename class="extension">.mov</filename>
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369 | or <filename class="extension">.mp4</filename>) so that the header
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370 | information is located at the beginning of the file instead of the end.
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371 | This allows the movie file to begin playing before the entire file has
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372 | been downloaded.
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373 | </para>
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374 |
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375 | <note>
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376 | <para>
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377 | Support for most of the dependency packages requires using options
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378 | passed to the <command>configure</command> script. View the output
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379 | from <command>./configure --help</command> for complete information
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380 | about enabling dependency packages.
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381 | </para>
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382 | </note>
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383 |
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384 | </sect2>
|
---|
385 |
|
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386 | <sect2 role="configuration">
|
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387 | <title>Configuring FFmpeg</title>
|
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388 |
|
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389 | <sect3 id="ffmpeg-config">
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390 | <title>Config Files</title>
|
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391 |
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392 | <para>
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393 | <filename>/etc/ffserver.conf</filename> and
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394 | <filename>~/.ffmpeg/ffserver-config</filename>
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395 | </para>
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396 |
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397 | <indexterm zone="ffmpeg ffmpeg-config">
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398 | <primary
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399 | sortas="e-AA.ffmpeg-ffserver-config">~/.ffmpeg/ffserver-config</primary>
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400 | </indexterm>
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401 |
|
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402 | <indexterm zone="ffmpeg ffmpeg-config">
|
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403 | <primary sortas="e-etc-ffserver.conf">/etc/ffserver.conf</primary>
|
---|
404 | </indexterm>
|
---|
405 |
|
---|
406 | <para>
|
---|
407 | You'll find a sample <command>ffserver</command> configuration file at
|
---|
408 | <filename>doc/ffserver.conf</filename> in the source tree.
|
---|
409 | </para>
|
---|
410 |
|
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411 | </sect3>
|
---|
412 |
|
---|
413 | </sect2>
|
---|
414 |
|
---|
415 | <sect2 role="content">
|
---|
416 | <title>Contents</title>
|
---|
417 |
|
---|
418 | <segmentedlist>
|
---|
419 | <segtitle>Installed Programs</segtitle>
|
---|
420 | <segtitle>Installed Libraries</segtitle>
|
---|
421 | <segtitle>Installed Directories</segtitle>
|
---|
422 |
|
---|
423 | <seglistitem>
|
---|
424 | <seg>
|
---|
425 | ffmpeg, ffplay, ffprobe, ffserver, and
|
---|
426 | qt-faststart
|
---|
427 | </seg>
|
---|
428 | <seg>
|
---|
429 | libavcodec.so, libavdevice.so, libavfilter.so,
|
---|
430 | libavformat.so, libavutil.so, libpostproc.so,
|
---|
431 | libswresample, and libswscale.so
|
---|
432 | </seg>
|
---|
433 | <seg>
|
---|
434 | /usr/include/libavcodec,
|
---|
435 | /usr/include/libavdevice,
|
---|
436 | /usr/include/libavfilter,
|
---|
437 | /usr/include/libavformat,
|
---|
438 | /usr/include/libavutil,
|
---|
439 | /usr/include/libpostproc,
|
---|
440 | /usr/include/libswresample
|
---|
441 | /usr/include/libswscale,
|
---|
442 | /usr/share/ffmpeg, and
|
---|
443 | /usr/share/doc/ffmpeg-&ffmpeg-version;
|
---|
444 | </seg>
|
---|
445 | </seglistitem>
|
---|
446 | </segmentedlist>
|
---|
447 |
|
---|
448 | <variablelist>
|
---|
449 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
|
---|
450 | <?dbfo list-presentation="list"?>
|
---|
451 | <?dbhtml list-presentation="table"?>
|
---|
452 |
|
---|
453 | <varlistentry id="ffmpeg-prog">
|
---|
454 | <term><command>ffmpeg</command></term>
|
---|
455 | <listitem>
|
---|
456 | <para>
|
---|
457 | is a command-line tool to convert video files, network streams and
|
---|
458 | input from a TV card to several video formats.
|
---|
459 | </para>
|
---|
460 | <indexterm zone="ffmpeg ffmpeg-prog">
|
---|
461 | <primary sortas="b-ffmpeg">ffmpeg</primary>
|
---|
462 | </indexterm>
|
---|
463 | </listitem>
|
---|
464 | </varlistentry>
|
---|
465 |
|
---|
466 | <varlistentry id="ffplay">
|
---|
467 | <term><command>ffplay</command></term>
|
---|
468 | <listitem>
|
---|
469 | <para>
|
---|
470 | is a very simple and portable media player using the
|
---|
471 | <filename>ffmpeg</filename> libraries and the SDL library.
|
---|
472 | </para>
|
---|
473 | <indexterm zone="ffmpeg ffplay">
|
---|
474 | <primary sortas="b-ffplay">ffplay</primary>
|
---|
475 | </indexterm>
|
---|
476 | </listitem>
|
---|
477 | </varlistentry>
|
---|
478 |
|
---|
479 | <varlistentry id="ffprobe">
|
---|
480 | <term><command>ffprobe</command></term>
|
---|
481 | <listitem>
|
---|
482 | <para>
|
---|
483 | gathers information from multimedia streams and prints it in a human
|
---|
484 | and machine-readable fashion.
|
---|
485 | </para>
|
---|
486 | <indexterm zone="ffmpeg ffprobe">
|
---|
487 | <primary sortas="b-ffprobe">ffprobe</primary>
|
---|
488 | </indexterm>
|
---|
489 | </listitem>
|
---|
490 | </varlistentry>
|
---|
491 |
|
---|
492 | <varlistentry id="ffserver">
|
---|
493 | <term><command>ffserver</command></term>
|
---|
494 | <listitem>
|
---|
495 | <para>
|
---|
496 | is a streaming server for everything that <command>ffmpeg</command>
|
---|
497 | could use as input (files, streams, TV card input, webcam, etc).
|
---|
498 | </para>
|
---|
499 | <indexterm zone="ffmpeg ffserver">
|
---|
500 | <primary sortas="b-ffserver">ffserver</primary>
|
---|
501 | </indexterm>
|
---|
502 | </listitem>
|
---|
503 | </varlistentry>
|
---|
504 |
|
---|
505 | <varlistentry id="qt-faststart">
|
---|
506 | <term><command>qt-faststart</command></term>
|
---|
507 | <listitem>
|
---|
508 | <para>
|
---|
509 | moves the index file to the front of quicktime (mov/mp4) videos.
|
---|
510 | </para>
|
---|
511 | <indexterm zone="ffmpeg qt-faststart">
|
---|
512 | <primary sortas="b-qt-faststart">qt-faststart</primary>
|
---|
513 | </indexterm>
|
---|
514 | </listitem>
|
---|
515 | </varlistentry>
|
---|
516 |
|
---|
517 | <varlistentry id="libavcodec">
|
---|
518 | <term><filename class="libraryfile">libavcodec.so</filename></term>
|
---|
519 | <listitem>
|
---|
520 | <para>
|
---|
521 | is a library containing the <application>FFmpeg</application> codecs
|
---|
522 | (both encoding and decoding).
|
---|
523 | </para>
|
---|
524 | <indexterm zone="ffmpeg libavcodec">
|
---|
525 | <primary sortas="c-libavcodec">libavcodec.so</primary>
|
---|
526 | </indexterm>
|
---|
527 | </listitem>
|
---|
528 | </varlistentry>
|
---|
529 |
|
---|
530 | <varlistentry id="libavdevice">
|
---|
531 | <term><filename class="libraryfile">libavdevice.so</filename></term>
|
---|
532 | <listitem>
|
---|
533 | <para>
|
---|
534 | is the <application>FFmpeg</application> device handling library.
|
---|
535 | </para>
|
---|
536 | <indexterm zone="ffmpeg libavdevice">
|
---|
537 | <primary sortas="c-libavdevice">libavdevice.so</primary>
|
---|
538 | </indexterm>
|
---|
539 | </listitem>
|
---|
540 | </varlistentry>
|
---|
541 |
|
---|
542 | <varlistentry id="libavfilter">
|
---|
543 | <term><filename class="libraryfile">libavfilter.so</filename></term>
|
---|
544 | <listitem>
|
---|
545 | <para>
|
---|
546 | is a library of filters that can alter video or audio between the
|
---|
547 | decoder and the encoder (or output).
|
---|
548 | </para>
|
---|
549 | <indexterm zone="ffmpeg libavfilter">
|
---|
550 | <primary sortas="c-libavfilter">libavfilter.so</primary>
|
---|
551 | </indexterm>
|
---|
552 | </listitem>
|
---|
553 | </varlistentry>
|
---|
554 |
|
---|
555 | <varlistentry id="libavformat">
|
---|
556 | <term><filename class="libraryfile">libavformat.so</filename></term>
|
---|
557 | <listitem>
|
---|
558 | <para>
|
---|
559 | is a library containing the file formats handling (mux and demux
|
---|
560 | code for several formats) used by <command>ffplay</command> as well
|
---|
561 | as allowing the generation of audio or video streams.
|
---|
562 | </para>
|
---|
563 | <indexterm zone="ffmpeg libavformat">
|
---|
564 | <primary sortas="c-libavformat">libavformat.so</primary>
|
---|
565 | </indexterm>
|
---|
566 | </listitem>
|
---|
567 | </varlistentry>
|
---|
568 |
|
---|
569 | <varlistentry id="libavutil">
|
---|
570 | <term><filename class="libraryfile">libavutil.so</filename></term>
|
---|
571 | <listitem>
|
---|
572 | <para>
|
---|
573 | is the <application>FFmpeg</application> utility library.
|
---|
574 | </para>
|
---|
575 | <indexterm zone="ffmpeg libavutil">
|
---|
576 | <primary sortas="c-libavutil">libavutil.so</primary>
|
---|
577 | </indexterm>
|
---|
578 | </listitem>
|
---|
579 | </varlistentry>
|
---|
580 |
|
---|
581 | <varlistentry id="libpostproc">
|
---|
582 | <term><filename class="libraryfile">libpostproc.so</filename></term>
|
---|
583 | <listitem>
|
---|
584 | <para>
|
---|
585 | is the <application>FFmpeg</application> post processing library.
|
---|
586 | </para>
|
---|
587 | <indexterm zone="ffmpeg libpostproc">
|
---|
588 | <primary sortas="c-libpostproc">libpostproc.so</primary>
|
---|
589 | </indexterm>
|
---|
590 | </listitem>
|
---|
591 | </varlistentry>
|
---|
592 |
|
---|
593 | <varlistentry id="libswresample">
|
---|
594 | <term><filename class="libraryfile">libswresample.so</filename></term>
|
---|
595 | <listitem>
|
---|
596 | <para>
|
---|
597 | is the <application>FFmpeg</application> audio rescaling library,
|
---|
598 | it contains functions for converting audio sample formats.
|
---|
599 | </para>
|
---|
600 | <indexterm zone="ffmpeg libswresample">
|
---|
601 | <primary sortas="c-libswresample">libswresample.so</primary>
|
---|
602 | </indexterm>
|
---|
603 | </listitem>
|
---|
604 | </varlistentry>
|
---|
605 |
|
---|
606 | <varlistentry id="libswscale">
|
---|
607 | <term><filename class="libraryfile">libswscale.so</filename></term>
|
---|
608 | <listitem>
|
---|
609 | <para>
|
---|
610 | is the <application>FFmpeg</application> image rescaling library.
|
---|
611 | </para>
|
---|
612 | <indexterm zone="ffmpeg libswscale">
|
---|
613 | <primary sortas="c-libswscale">libswscale.so</primary>
|
---|
614 | </indexterm>
|
---|
615 | </listitem>
|
---|
616 | </varlistentry>
|
---|
617 |
|
---|
618 | </variablelist>
|
---|
619 |
|
---|
620 | </sect2>
|
---|
621 |
|
---|
622 | </sect1>
|
---|