mpv/DOCS/xml/en/install.xml

<?xml version="1.0" encoding="iso-8859-1"?>
<sect1 id="install">
<title>Installation</title>

<para>
In this section I'll try to guide you through the compiling and configuring
process of <application>MPlayer</application>. It's not easy, but it won't
necessarily be hard. If you experience a different behavior than what I
explain, please search through this documentation and you'll find your
answers. If you see links, please follow them and read carefully what they
contain. It will take some time, but it IS worth it.
</para>

<para>
You need a fairly recent system. On Linux, 2.4.x kernels are recommended.
</para>


<sect2 id="softreq">
<title>Software requirements</title>

<itemizedlist>
<listitem><para>
  <emphasis role="bold">binutils</emphasis> - suggested version is <emphasis role="bold">2.11.x</emphasis>.
  This program is responsible for generating MMX/ 3DNow!/etc instructions,
  thus very important.
</para></listitem>
<listitem><para>
  <emphasis role="bold">gcc</emphasis> - suggested versions are: <emphasis role="bold">2.95.3</emphasis>
  (maybe <emphasis role="bold">2.95.4</emphasis>) and <emphasis role="bold">3.2+</emphasis>.
  <emphasis role="bold">Never</emphasis> use 2.96 or 3.0.x! They generate faulty code for
  <application>MPlayer</application>.  If you decide to change gcc from
  2.96, then don't decide in favor of 3.0.x just because it's newer! Early
  releases of 3.0.x were even more buggy than 2.96. So downgrade to 2.95.x
  (downgrade <systemitem class="library">libstdc++</systemitem> too, other
  programs may need it) or don't up/downgrade at all (but in this case, be
  prepared for runtime problems). If you vote for 3.x.x, try to use the
  latest version, early releases had various bugs, so be sure you use at
  least 3.1, it's tested and working. For detailed information about gcc 2.96's
  bugs (that are still NOT fixed, they have been WORKED AROUND in
  <application>MPlayer</application>!),see the <link linkend="gcc-296">gcc 2.96</link>
  section and the <xref linkend="faq"/>.
  </para></listitem>
<listitem><para>
  <emphasis role="bold">XFree86</emphasis> - suggested version is <emphasis role="bold">always the
  newest</emphasis> (4.3.0).  Normally, everyone wants this, as starting
  with XFree86 4.0.2, it contains the <link linkend="xv">XVideo</link>
  extension (somewhere referred to as <emphasis role="bold">Xv</emphasis>)
  which is needed to enable the hardware YUV acceleration (fast image display)
  on cards that support it.
  Make sure its <emphasis role="bold">development package</emphasis> is installed,
  too, otherwise it won't work.
  For some video cards you don't need XFree86. See list below.
  </para></listitem>
<listitem><para>
  <emphasis role="bold">make</emphasis> - suggested version is
  <emphasis role="bold">always the newest</emphasis> (at least 3.79.x). This
  usually isn't important.
  </para></listitem>
<listitem><para>
  <emphasis role="bold">SDL</emphasis> - it's not mandatory, but can help in
  some cases (bad audio, video cards that lag strangely with the xv driver).
  Always use the newest (beginning from 1.2.x).
  </para></listitem>
<listitem><para>
  <emphasis role="bold">libjpeg</emphasis> - optional JPEG decoder, used by the <option>-mf</option>
  option and some QT MOV files.  Useful for both MPlayer and MEncoder if
  you plan to work with jpeg files.
  </para></listitem>
<listitem><para>
  <emphasis role="bold">libpng</emphasis> - recommended and default (M)PNG decoder. Required for GUI.
  Useful for both <application>MPlayer</application> and
  <application>MEncoder</application>.
  </para></listitem>
<listitem><para>
  <emphasis role="bold">lame</emphasis> - recommended, needed for encoding MP3 audio with
  <application>MEncoder</application>, suggested version is
  <emphasis>always the newest</emphasis> (at least 3.90).
  </para></listitem>
<listitem><para>
  <emphasis role="bold">libogg</emphasis> - optional, needed for playing OGG file format.
  </para></listitem>
<listitem><para>
  <emphasis role="bold">libvorbis</emphasis> - optional, needed for playing OGG Vorbis audio.
  </para></listitem>
<listitem><para>
  <emphasis role="bold"><ulink url="http://www.live.com/mplayer/">LIVE.COM Streaming Media</ulink></emphasis>
  - optional, needed for playing RTSP/RTP streams.
  </para></listitem>
<listitem><para>
  <emphasis role="bold">directfb</emphasis> - optional, from
  <ulink url="http://www.directfb.org"/>
  </para></listitem>
<listitem><para>
  <emphasis role="bold">cdparanoia</emphasis> - optional, for CDDA support
  </para></listitem>
<listitem><para>
  <emphasis role="bold">libfreetype</emphasis> - optional, for TTF fonts
  support. At least 2.0.9 is required.
  </para></listitem>
<listitem><para>
  <emphasis role="bold">libxmms</emphasis> - optional, for XMMS input plugin
  support. At least 1.2.7 is required.
  </para></listitem>
</itemizedlist>
</sect2>


<sect2>
<title>Codecs</title>

<itemizedlist>
<listitem><para>
  <emphasis role="bold">libavcodec</emphasis>: This codec package is capable
  of decoding H263/MJPEG/RV10/DivX3/DivX4/DivX5/MP41/MP42/WMV1 encoded video
  streams and WMA (Windows Media Audio) v1/v2 audio streams, on multiple
  platforms. It is also known to be the fastest for this task. See
  <link linkend="ffmpeg">this section</link> for details. Features:
  <itemizedlist>
  <listitem><simpara>
    gain decoding of videos mentioned above, on non-x86 machines
    </simpara></listitem>
  <listitem><simpara>
    encoding with most of the mentioned codecs
    </simpara></listitem>
  <listitem><simpara>
    this codec is the <emphasis role="bold">fastest codec available</emphasis> for
    DivX/3/4/5 and other MPEG4 types. Recommended!
    </simpara></listitem>
  </itemizedlist>
  </para></listitem>
<listitem><para>
  <emphasis role="bold">Win32 codecs</emphasis>: If you plan to use
  <application>MPlayer</application> on x86 architecture, you will possibly need
  them. Download the Win32 codecs from our
  <ulink url="http://www.mplayerhq.hu/MPlayer/releases/codecs/">codecs page</ulink>
  and install them to <filename class="directory">/usr/lib/win32</filename>
  <emphasis role="bold">BEFORE</emphasis> compiling <application>MPlayer</application>,
  otherwise no Win32 support will be compiled!
  <note><para>The avifile project has similar codecs package, but it
  differs from ours, so if you want to use all supported codecs, then use
  our package (do not worry, avifile works with it without problems).</para>
  </note>
  Features:
  <itemizedlist>
  <listitem><simpara>
    you need this if you want to play or encode for example movies recorded
    with various hardware compressors, like tuner cards, digital cameras
    (example: DV, ATI VCR, MJPEG)
    </simpara></listitem>
  <listitem><simpara>
    needed if you want to play <emphasis role="bold">WMV8, WMV9/WMA9 movies</emphasis>.
   </simpara></listitem>
  <listitem><simpara>
    Not needed for old ASF's with MP41 or MP42 video (though VoxWare audio is
    frequent for these files - it's done by the Win32 codec), or WMV7. Also not
    needed for WMA (Windows Media Audio), libavcodec has opensource decoder for that.
    </simpara></listitem>
  </itemizedlist>
  </para></listitem>
<listitem><para>
  <emphasis role="bold">QuickTime codecs</emphasis>: on x86 platforms these
  codecs can be used to decode Sorenson v1/v3, RPZA, and other QuickTime video,
  and QDesign audio streams. Installation instructions can be found in the
  <link linkend="sorenson">Sorenson video codec</link> section.
  </para></listitem>
<listitem><para>
  <emphasis role="bold">DivX4/DivX5</emphasis>: information about this codec is
  available in the <link linkend="divx4-5">DivX4/DivX5 section</link>. You possibly
  don't want this codec as <emphasis role="bold">libavcodec</emphasis> (see
  above) is much faster and has better quality than this, for both decoding
  and encoding. Features:
  <itemizedlist>
  <listitem><simpara>
    1 pass or 2 pass encoding with <link linkend="mencoder">MEncoder</link>
    </simpara></listitem>
  <listitem><simpara>
    can play old <emphasis role="bold">DivX3</emphasis> movies much faster than
    the Win32 DLL but slower than <emphasis role="bold">libavcodec</emphasis>!
    </simpara></listitem>
  <listitem><simpara>
    it's closed-source, and only a x86 version is available.
    </simpara></listitem>
  </itemizedlist>
  </para></listitem>
<listitem><para>
  <emphasis role="bold">XviD</emphasis>: Open source encoding alternative to
  Divx4Linux. Features:
  <itemizedlist>
  <listitem><simpara>
    1 pass or 2 pass encoding with <link linkend="mencoder">MEncoder</link>
    </simpara></listitem>
  <listitem><simpara>
    it's open-source, so it's multiplatform.
    </simpara></listitem>
  <listitem><simpara>
    it's about 2 times faster than divx4 when encoding - about the same
    quality
    </simpara></listitem>
  </itemizedlist>
  </para></listitem>
<listitem><para>
  The <emphasis role="bold"><link linkend="xanim">XAnim codecs</link></emphasis>
  are the best (full screen, hardware YUV zoom) for decoding
  <emphasis role="bold">3ivx</emphasis> and Indeo 3/4/5 movies, and some old
  formats. And they are multiplatform, so this is the only way to play Indeo on
  non-x86 platforms (well, apart from using XAnim:). But for example Cinepak movies
  are best played with <application>MPlayer</application>'s own Cinepak decoder!
  </para></listitem>
<listitem><para>
  For <emphasis role="bold">Ogg Vorbis</emphasis> audio decoding you need to
  install <systemitem class="library">libvorbis</systemitem> properly. Use
  deb/rpm packages if available, or compile from
  <ulink url="http://ogg.org/ogg/vorbis/download/vorbis_nightly_cvs.tgz">source</ulink>
  (this is a nightly updated tarball of Vorbis CVS).
  </para></listitem>
<listitem><para>
  <application>MPlayer</application> can use the libraries of RealPlayer 8
  or RealONE to play files with <emphasis role="bold">RealVideo 2.0-4.0</emphasis>
  video, and Sipro/Cook audio. See <link linkend="realmedia">RealMedia file format</link>
  section for installation instructions and more information.
  </para></listitem>
</itemizedlist>
</sect2>


<sect2 id="video-cards">
<title>Video cards</title>

<para>
There are generally two kind of video cards. One kind (the newer cards) has
<emphasis role="bold">hardware scaling and YUV acceleration</emphasis> support,
the other cards don't.
</para>


<sect3 id="yuv-cards">
<title>YUV cards</title>

<para>
They can display and scale (zoom) the picture to any size that fits in
their memory, with <emphasis role="bold">small CPU usage</emphasis> (even when
zooming), thus fullscreen is nice and very fast.
  
<itemizedlist>
<listitem><para>
  <emphasis role="bold">Matrox G200/G400/G450/G550 cards</emphasis>: although a
  <link linkend="vidix">Vidix driver</link> is provided, it is recommended to
  use the mga_vid module instead, for it works much better.
  Please see the <link linkend="mga_vid">mga_vid</link> section about its
  installation and usage. It is important to do these steps
  <emphasis>before</emphasis> compiling <application>MPlayer</application>,
  otherwise no mga_vid support will be built. Also check out the
  <link linkend="tvout-mga-g400">Matrox TV-out</link> section.  If you
  <emphasis role="bold"> If you don't use Linux</emphasis>, your only
  possibility is the VIDIX driver: read the <link linkend="vidix">VIDIX</link> section.
  </para></listitem>
<listitem><para>
  <emphasis role="bold">3Dfx Voodoo3/Banshee cards</emphasis>: please see
  <link linkend="tdfxfb">tdfxfb</link> section in order to gain big speedup.
  It is important to do these steps <emphasis role="bold">before</emphasis>
  compiling <application>MPlayer</application>, otherwise no 3Dfx support will be
  built. Also see the <link linkend="tvout-voodoo">3dfx TV-out section</link>.
  If you use X, use at least <emphasis role="bold">4.2.0</emphasis>, as 3dfx Xv
  driver was broken in 4.1.0, and earlier releases.
  </para></listitem>
<listitem><para>
  <emphasis role="bold">ATI cards</emphasis>: <link linkend="vidix">VIDIX</link>
  driver is provided for the following cards:
  <emphasis role="bold">Radeon, Rage128, Mach64</emphasis> (Rage XL/Mobility, Xpert98).
  Also see the <link linkend="tvout-ati">ATI cards section</link> of the TV-out documentation,
  to know if you card's TV-out is supported under Linux/<application>MPlayer</application>.
  </para></listitem>
<listitem><para>
  <emphasis role="bold">S3 cards</emphasis>: the Savage and Virge/DX chips have
  hardware acceleration. Use as new XFree86 version as possible, older drivers are
  buggy. Savage chips have problems with YV12 display, see <link linkend="s3">S3 Xv
  section</link> for details. Older, Trio cards have no, or slow hardware
  support.
  </para></listitem>
<listitem><para>
  <emphasis role="bold">nVidia cards</emphasis>: may or may not be good choice for video playing.
  If you do not have a GeForce2 (or newer) card, it's not likely to work without bugs.
  <emphasis role="bold">the built-in nVidia driver in XFree86 does not support
  hardware YUV acceleration on all nVidia cards.</emphasis> You have
  to download nVidia's closed-source drivers from nVidia.com. See the <link
  linkend="nvidia">nVidia Xv driver</link> section for details. Please also check
  the <link linkend="tvout-nvidia">nVidia TV-out section</link> if you wish to
  use a TV.
  </para></listitem>
<listitem><para>
  <emphasis role="bold">3DLabs GLINT R3 and Permedia3</emphasis>: a VIDIX driver
  is provided (pm3_vid). Please see the <link linkend="vidix">VIDIX</link> section
  for details.
  </para></listitem>
<listitem><para>
  <emphasis role="bold">Other cards</emphasis>: none of the above?
  <itemizedlist>
  <listitem><simpara>
    Try if the XFree86 driver (and your card) supports hardware
    acceleration. See the <link linkend="xv">Xv section</link> for details.
    </simpara></listitem>
  <listitem><simpara>
    If it doesn't, then your card's video features aren't supported under
    your operating system :( If hardware scaling works under Windows, it
    doesn't mean it will work under Linux or other operating system, it depends on
    the drivers. Most manufacturers neither make Linux drivers nor release
    specifications of their chips - so you are unlucky if using their cards.
    See <xref linkend="non-yuv-cards"/>.
    </simpara></listitem>
  </itemizedlist>
  </para></listitem>
</itemizedlist>
</para>
</sect3>


<sect3 id="non-yuv-cards" xreflabel="Non-YUV cards">
<title>Non-YUV cards</title>

<para>
Fullscreen playing can be achieved by either enabling <emphasis role="bold">
software scaling</emphasis> (use the <option>-zoom</option> or <option>-vf</option> option,
but i warn you: this is slow), or switching to a smaller video mode, for example
352x288. If you don't have YUV acceleration, this latter method is recommended.
Video mode switching can be enabled by using the <option>-vm</option> option and
it works with the following drivers:
<itemizedlist>
<listitem><simpara>
  <emphasis role="bold">using</emphasis> XFree86: see details in <link linkend="dga">DGA driver</link> and
  <link linkend="x11">X11 driver</link> sections. DGA is recommended! Also
  try DGA via SDL, sometimes it's better.
  </simpara></listitem>
<listitem><simpara>
  <emphasis role="bold">not using</emphasis> XFree86: try the drivers in the
  following order:
  <link linkend="vesa">vesa</link>,
  <link linkend="fbdev">fbdev</link>,
  <link linkend="svgalib">svgalib</link>,
  <link linkend="aalib">aalib</link>.
  </simpara></listitem>
</itemizedlist>
</para>
</sect3>

<!-- FIXME: find a more logical organization for this section -->
<sect3 id="cirrus-logic-cards" xreflabel="Cirrus-Logic cards">
<title>Cirrus-Logic cards</title>
<itemizedlist>
<listitem><para>
  GD 7548: present on-board and tested in Compaq Armada 41xx notebook series.
  <itemizedlist>
  <listitem><simpara>
    XFree86 3: works in 8/16bpp modes. However, the driver is dramatically slow
    and buggy in 800x600@16bpp. <emphasis role="bold">Recommended: 640x480@16bpp</emphasis>
   </simpara></listitem>
  <listitem><simpara>
    XFree86 4: the Xserver freezes soon after start unless acceleration is
    disabled, but then the whole thing gets slower than XFree86 3. No XVideo.
   </simpara></listitem>
  <listitem><simpara>
    FBdev: framebuffer can be turned on with the <systemitem>clgenfb</systemitem>
    driver in the kernel, though for me it worked only in 8bpp, thus unusable.
    The clgenfb source had to be extended with the 7548 ID before compilation.
   </simpara></listitem>
  <listitem><simpara>
    VESA: the card is only VBE 1.2 capable, so VESA output can't be used. Can't
    be workarounded with UniVBE.
  </simpara></listitem>
  <listitem><simpara>
    SVGAlib: detects an older Cirrus chip. Usable but slow with
    <option>-bpp 8</option>.
  </simpara></listitem>
</itemizedlist>
</para></listitem>
</itemizedlist>
</sect3>
</sect2>


<sect2 id="sound-cards">
<title>Sound cards</title>

<itemizedlist>
<listitem><simpara>
  <emphasis role="bold">Soundblaster Live!</emphasis>: with this card you can use
  4 or 6 (<emphasis role="bold">5.1</emphasis>) channels AC3 decoding instead of 2. Read the
  <link linkend="swac3">Software AC3 decoding</link> section. For hardware AC3
  passthrough you <emphasis role="bold">must</emphasis> use ALSA 0.9 with OSS emulation!
  </simpara></listitem>
<listitem><simpara>
  <emphasis role="bold">C-Media with SP/DIF out</emphasis>: hardware AC3
  passthrough is possible with these cards, see
  <link linkend="hwac3">Hardware AC3 decoding</link> section.
  </simpara></listitem>
<listitem><simpara>
  Features of <emphasis role="bold">other cards</emphasis> aren't supported by
  <application>MPlayer</application>. <emphasis role="bold">It's very recommended
  to read the <link linkend="audio-dev">sound card</link> section!</emphasis>
  </simpara></listitem>
</itemizedlist>
</sect2>


<sect2>
<title>Features</title>

<itemizedlist>
<listitem><para>
  Decide if you need GUI. If you do, see the <link linkend="gui">GUI
  section</link> before compiling.
  </para></listitem>
<listitem><para>
  If you want to install <application>MEncoder</application> (our great
  all-purpose encoder), see the <link linkend="mencoder">MEncoder section</link>.
  </para></listitem>
<listitem><para>
  If you have a V4L compatible <emphasis role="bold">TV tuner</emphasis> card,
  and wish to watch/grab and encode movies with <application>MPlayer</application>,
  read the <link linkend="tv-input">TV input</link> section.
  </para></listitem>
<listitem><para>
  There is a neat <emphasis role="bold">OSD Menu</emphasis> support ready to be
  used. Check the <link linkend="subosd">OSD menu</link> section.
  </para></listitem>
</itemizedlist>

<para>
Then build <application>MPlayer</application>:
<screen>
./configure
make
make install</screen>
</para>

<para>
At this point, <application>MPlayer</application> is ready to use. The
directory <filename class="directory">$PREFIX/share/mplayer</filename>
contains the <filename>codecs.conf</filename> file, which is used to tell
the program all the codecs and their capabilities. This file should always
be kept up to date together with the main binary. Check if you have
<filename>codecs.conf</filename> in your home directory
(<filename>~/.mplayer/codecs.conf</filename>) left from old
<application>MPlayer</application> versions, and remove it.
</para>

<para>
Debian users can build a .deb package for themselves, it's very simple.
Just exec
<screen>fakeroot debian/rules binary</screen>
in <application>MPlayer</application>'s root directory. See
<link linkend="debian">Debian packaging</link> for detailled instructions.
</para>

<para>
<emphasis role="bold">Always browse the output of</emphasis>
<filename>./configure</filename>, and the
<filename>configure.log</filename> file, they contain information about
what will be built, and what will not. You may also want to view
<filename>config.h</filename> and <filename>config.mak</filename> files.
If you have some libraries installed, but not detected by
<filename>./configure</filename>, then check if you also have the proper
header files (usually the -dev packages) and their version matches. The
<filename>configure.log</filename> file usually tells you what is missing.
</para>

<para>
Though not mandatory, the fonts should be installed in order to gain OSD,
and subtitle functionality. The recommended method is installing a TTF
font file and telling MPlayer to use it. See the <link linkend="subosd">Subtitles
and OSD</link> section for details.
</para>

</sect2>
</sect1>

<!-- ********** -->

<sect1 id="gui">
<title>What about the GUI?</title>

<para>
The GUI needs GTK 1.2.x (it isn't fully GTK, but the panels are). The skins
are stored in PNG format, so GTK, <systemitem class="library">libpng</systemitem>
(and their devel stuff, usualy called <systemitem class="library">gtk-dev</systemitem>
and <systemitem class="library">libpng-dev</systemitem>) has to be installed.
You can build it by specifying <option>--enable-gui</option> during
<filename>./configure</filename>. Then, to turn on GUI mode, you have to
execute the <command>gmplayer</command> binary.
</para>

<para>
Currently you can't use the <option>-gui</option> option on the command
line, due to technical reasons.
</para>

<para>
As <application>MPlayer</application> doesn't have a skin included, you
have to download them if you want to use the GUI. See the <ulink
url="http://www.mplayerhq.hu/homepage/dload.html">download page</ulink>.
They should be extracted to the usual system-wide directory (<filename
class="directory">$PREFIX/share/mplayer/Skin</filename>), or to <filename
class="directory">$HOME/.mplayer/Skin</filename>.
<application>MPlayer</application> by default looks in these directories
for a directory named <filename class="directory">default</filename>, but
you can use the <option>-skin <replaceable>newskin</replaceable></option>
option, or the <literal>skin=newskin</literal> config file directive to use
the skin in <filename class="directory">*/Skin/newskin</filename>
directory.
</para>
</sect1>

<!-- ********** -->

<sect1 id="subosd">
<title>Subtitles and OSD</title>

<para>
MPlayer can display subtitles along with movie files. Currently the
following formats are supported:
<itemizedlist>
<listitem><para>VobSub</para></listitem>
<listitem><para>OGM</para></listitem>
<listitem><para>CC (closed caption)</para></listitem>
<listitem><para>Microdvd</para></listitem>
<listitem><para>SubRip</para></listitem>
<listitem><para>SubViewer</para></listitem>
<listitem><para>Sami</para></listitem>
<listitem><para>VPlayer</para></listitem>
<listitem><para>RT</para></listitem>
<listitem><para>SSA</para></listitem>
<listitem><para><link linkend="mpsub">MPsub</link></para></listitem>
<listitem><para>AQTitle</para></listitem>
<listitem><para>JACOsub</para></listitem>
</itemizedlist>
</para>

<para>
MPlayer can dump the previously listed subtitle formats
(<emphasis role="bold">except the three first</emphasis>) into the following
destination formats, with the given options:
<itemizedlist>
<listitem><para>MPsub: <option>-dumpmpsub</option></para></listitem>
<listitem><para>SubRip: <option>-dumpsrtsub</option></para></listitem>
<listitem><para>Microdvd: <option>-dumpmicrodvdsub</option></para></listitem>
<listitem><para>JACOsub: <option>-dumpjacosub</option></para></listitem>
<listitem><para>Sami: <option>-dumpsami</option></para></listitem>
</itemizedlist>
</para>

<para>
The command line options differ slightly for the different formats:
</para>

<formalpara>
<title>VobSub subtitles</title>
<para>
VobSub subtitles consist of a big (some megabytes) <filename>.SUB</filename> file,
and optional <filename>.IDX</filename> and/or <filename>.IFO</filename>
files.  If you have files like <filename>sample.sub</filename>,
<filename>sample.ifo</filename> (optional), <filename>sample.idx</filename> -
you have to pass <application>MPlayer</application> the
<option>-vobsub sample [-vobsubid <replaceable>id</replaceable>]</option> options
(full path optional). The <option>-vobsubid</option> option is like
<option>-sid</option> for DVDs, you can choose between subtitle tracks
(languages) with it. In case that <option>-vobsubid</option> is omitted,
<application>MPLayer</application> will try to use the languages given by the
<option>-slang</option> option and fall back to the <systemitem>langidx</systemitem>
in the <filename>.IDX</filename> file to set the subtitle language. If it fails,
there will be no subtitles.
</para>
</formalpara>

<formalpara>
<title>Other subtitles</title>
<para>
The other formats consist of a single text file containing timing,
placement and text information. Usage: If you have a file like
<filename>sample.txt</filename>, you have to pass the option <option>-sub
sample.txt</option> (full path optional).
</para>
</formalpara>

<variablelist>
<title>Adjusting subtitle timing and placement:</title>
<varlistentry>
  <term><option>-subdelay <replaceable>sec</replaceable></option></term>
  <listitem><simpara>
    Delays subtitles by <option><replaceable>sec</replaceable></option> seconds.
    Can be negative.
    </simpara></listitem>
</varlistentry>
<varlistentry>
  <term><option>-subfps <replaceable>RATE</replaceable></option></term>
  <listitem><simpara>
    Specify frame/sec rate of subtitle file (float number).
    </simpara></listitem>
</varlistentry>
<varlistentry>
  <term><option>-subpos <replaceable>0-100</replaceable></option></term>
  <listitem><simpara>
    Specify the position of subtitles.
    </simpara></listitem>
</varlistentry>
</variablelist>

<para>
If you experience a growing delay between the movie and the subtitles when
using a MicroDVD subtitle file, most likely the frame rate of the movie and
the subtitle file are different. Please note that the MicroDVD subtitle
format uses absolute frame numbers for its timing, and therefore the
<option>-subfps</option> option cannot be used with this format. As
<application>MPlayer</application> has no way to guess the frame rate of
the subtitle file, you have to manually convert the frame rate. There is a
little perl script in the <filename class="directory">contrib</filename>
directory of the MPlayer FTP site to do this conversion for you.
</para>

<para>
About DVD subtitles, read the <link linkend="dvd">DVD section</link>.
</para>


<sect2 id="mpsub">
<title>MPlayer's own subtitle format (MPsub)</title>

<para>
<application>MPlayer</application> introduces a new subtitle format called
<emphasis role="bold">MPsub</emphasis>. It was designed by Gabucino. Basically
its main feature is being <emphasis>dynamically</emphasis> time-based (although
it has frame-based mode too).  Example (from <ulink
url="../../tech/mpsub.sub">DOCS/tech/mpsub.sub</ulink>):
<programlisting>
# first number  : wait this much after previous subtitle disappeared
# second number : display the current subtitle for this many seconds

15 3
A long long, time ago...

0 3
in a galaxy far away...

0 3
Naboo was under an attack.<!--
--></programlisting>
</para>

<para>
So you see, the main goal was to <emphasis role="bold">make subtitle
editing/timing/joining/cutting easy</emphasis>. And, if you - say - get an
SSA subtitle but it's badly timed/delayed to your version of the movie, you
simply do a
<screen>mplayer dummy.avi -sub source.ssa -dumpmpsub</screen>
A <filename>dump.mpsub</filename> file will be created in the
current directory, which will contain the source subtitle's text, but in
<emphasis role="bold">MPsub</emphasis> format. Then you can freely add/subtract
seconds to/from the subtitle.
</para>

<para>
Subtitles are displayed with a technique called <emphasis role="bold">'OSD',
On Screen Display</emphasis>.OSD is used to display current time, volume bar,
seek bar etc.
</para>
</sect2>


<sect2 id="mpsub-install">
<title>Installing OSD and subtitles</title>

<para>
You need an MPlayer font package to be able to use OSD/SUB feature.
There are many ways to get it:
</para>

<itemizedlist>
<listitem><para>
  Download ready-to-use font packages from MPlayer site.  Note: currently
  available fonts are limited for ISO 8859-1/2 support, but there are some
  other (including Korean, Russian, ISO 8859-8 etc) fonts at contrib/font
  section of FTP, made by users.
  </para><para>
  <!-- FIXME: this para should be before the list -->
  Font should have appropriate <filename>font.desc</filename> file which
  maps unicode font positions to the actual code page of the subtitles
  text. Other solution is to have subtitles encoded in UTF8 encoding and
  use <option>-utf8</option> option or just name the subtitles file
  <filename>&lt;video_name&gt;.utf</filename> and have it in the same dir
  as the video file. Recoding from different codepages to UTF8 could be
  <!-- FIXME: iconv (Debian) konwert (Red Hat) instead? -->
  done by using <command>konwert</command> (Debian) or
  <command>iconv</command> (Red Hat) programs.
  </para><para>
  
  <table>
  <title>Some URLs</title>
  <tgroup cols="2">
  <thead>
    <row><entry>URL</entry><entry>Comment</entry></row>
  </thead>
  <tbody>
  <row><entry>
    <ulink url="ftp://ftp.mplayerhq.hu/MPlayer/releases/fonts/"></ulink>
    </entry><entry>
    ISO fonts
    </entry></row>
  <row><entry>
    <ulink url="ftp://ftp.mplayerhq.hu/MPlayer/contrib/fonts/"></ulink>
    </entry><entry>
    various fonts by users
    </entry></row>
  <row><entry>
    <ulink url="http://realtime.ssu.ac.kr/~lethean/mplayer/"></ulink>
    </entry><entry>
    Korean fonts and RAW plugin
    </entry></row>
  </tbody>
  </tgroup>
  </table>
  
  </para></listitem>
<listitem><para>
  Use the font generator tool at <filename
  class="directory">TOOLS/subfont-c</filename>. It's a complete tool to
  convert from TTF/Type1/etc font to mplayer font pkg.  (read
  <filename>TOOLS/subfont-c/README</filename> for details)
  </para></listitem>
<listitem><para>
  Use the font generator GIMP plugin at <filename
  class="directory">TOOLS/subfont-GIMP</filename> (note: you must have HSI
  RAW plugin too, see URL below)
  <!-- FIXME: where's that URL? -->
  </para></listitem>
<listitem><para>
  using a TrueType (TTF) font, by the means of the <systemitem class="library">freetype</systemitem>
library. Version 2.0.9 or greater is mandatory! Then you have two methods:
  <itemizedlist>
    <listitem><para>
      use the <option>-font /path/to/arial.ttf</option> option to specify a
      TrueType font file on every occasion
      </para></listitem>
    <listitem><para>
      create a symlink:<screen>ln -s /path/to/arial.ttf ~/.mplayer/subfont.ttf</screen>
      </para></listitem>
      </itemizedlist>
  </para></listitem>
</itemizedlist>

<para>
If you chose non-TTF fonts, UNZIP the file you downloaded to <filename
class="directory">~/.mplayer</filename> or <filename
class="directory">$PREFIX/share/mplayer</filename>. Then rename or symlink
one of the extracted directories to <filename>font</filename>, for example:

<screen>ln -s ~/.mplayer/arial-24 ~/.mplayer/font</screen>

Now you have to see a timer at the upper left corner of the movie (switch
it off with the <keycap>o</keycap> key).
</para>

<para>
(subtitles are <emphasis>always enabled</emphasis>, for disabling them please
read the man page)
</para>

<para>
OSD has 4 states (switch with <keycap>o</keycap>):

<orderedlist>
<listitem><simpara>
  volume bar + seek bar (default)
  </simpara></listitem>
<listitem><simpara>
  volume bar + seek bar + timer + file position percentage on seeking
  </simpara></listitem>
<listitem><simpara>
  volume bar + seek bar + timer + total duration of the media
  </simpara></listitem>
<listitem><simpara>
  subtitles only
  </simpara></listitem>
</orderedlist>

You can change default behaviour by setting <varname>osdlevel</varname>
variable in config file, or the <option>-osdlevel</option> command line option.

</para>
</sect2>


<sect2 id="osdmenu">
<title>OSD menu</title>

<para>
MPlayer has a completely user definiable OSD Menu interface.
</para>

<note><simpara>
the Preferences menu is currently UNIMPLEMENTED!
</simpara></note>

<orderedlist>
<title>Installation</title>
<listitem><simpara>
  compile <application>MPlayer</application> by passing the <option>--enable-menu</option>
  to <filename>./configure</filename>
  </simpara></listitem>
<listitem><simpara>
  make sure you have an OSD font installed
  </simpara></listitem>
<listitem><simpara>
  copy <filename>etc/menu.conf</filename> to your
  <filename class="directory">.mplayer</filename> directory
  </simpara></listitem>
<listitem><simpara>
  copy <filename>etc/input.conf</filename> to your
  <filename class="directory">.mplayer</filename> directory, or to the system-wide
  <application>MPlayer</application> config dir (default:
  <filename class="directory">/usr/local/etc/mplayer</filename>)
  </simpara></listitem>
<listitem><simpara>
  check and edit <filename>input.conf</filename> to enable menu movement keys
  (it is described there).
  </simpara></listitem>
<listitem><para>
  start <application>MPlayer</application> by the following example:
  <screen>$ mplayer -menu file.avi</screen>
  </para></listitem>
<listitem><simpara>
  push any menu key you defined
  </simpara></listitem>
</orderedlist>

</sect2>
</sect1>

<!-- ********** -->

<sect1 id="rtc">
<title>RTC</title>
<para>
There are three timing methods in MPlayer.

<itemizedlist>
<listitem><simpara>
<emphasis role="bold">To use the old method</emphasis>, you don't have to do
  anything. It uses <systemitem>usleep()</systemitem> to tune
  A/V sync, with +/- 10ms accuracy. However sometimes the sync has to be
  tuned even finer.
  </simpara></listitem>
<listitem><para>
<emphasis role="bold">The new timer</emphasis> code uses PC's RTC (Real Time Clock)
  for this task, because it has precise 1ms timers. It is automagically enabled
  when available, but requires root privileges, a <emphasis>setuid root</emphasis>
  <application>MPlayer</application> binary or a properly set up kernel.
  If you are running kernel 2.4.19pre8 or later you can adjust the maximum RTC
  frequency for normal users through the /proc filesystem. Use this command to
  enable RTC for normal users:
  <screen>echo 1024 &gt; /proc/sys/dev/rtc/max-user-freq</screen>
  If you do not have such a new kernel, you can also change one line in
  <filename>drivers/char/rtc.c</filename> and recompile your kernel.
  Find the section that reads
  <programlisting>
       * We don't really want Joe User enabling more
       * than 64Hz of interrupts on a multi-user machine.
       */
      if ((rtc_freq &gt; 64) &amp;&amp; (!capable(CAP_SYS_RESOURCE)))
   </programlisting>
   and change the 64 to 1024. You should really know what you are doing, though.
   You can see the new timer's efficiency in the status line.
   The power management functions of some notebook BIOSes with speedstep CPUs
   interact badly with RTC. Audio and video may get out of sync. Plugging the
   external power connector in before you power up your notebook seems to help.
   You can always turn off RTC support with the <option>-nortc</option> option.
   In some hardware combinations (confirmed during usage of non-DMA DVD drive
   on an ALi1541 board) usage of the RTC timer causes skippy playback. It's
   recommended to use the third method in these cases.
  </para></listitem>
<listitem><simpara>
  <emphasis role="bold">The third timer code</emphasis> is turned on with the
  <option>-softsleep</option> option. It has the efficiency of the RTC, but it
  doesn't use RTC. On the other hand, it requires more CPU.
  </simpara></listitem>
</itemizedlist>
<note><para><emphasis role="bold">NEVER install a setuid root
<application>MPlayer</application> binary on a multiuser system!</emphasis>
It's a clear way for everyone to become root.
</para></note>
</para>
</sect1>