<section>
<title>What is DCP-o-matic?</title>
-<para>
-DCP-o-matic is a set of programs to make <ulink
-url="http://en.wikipedia.org/wiki/Digital_Cinema_Package">Digital
-Cinema Packages</ulink> (DCPs) from almost any video, audio and/or
-subtitle files. The resulting DCPs will play on modern digital
-cinema projectors.
-</para>
+<para>DCP-o-matic is a set of programs to perform the following tasks:</para>
+
+<itemizedlist>
+ <listitem>Creation of <ulink
+ url="http://en.wikipedia.org/wiki/Digital_Cinema_Package">Digital
+ Cinema Packages</ulink> (DCPs) from video, audio and/or
+ subtitle files.</listitem>
+ <listitem>Playback of DCPs on a PC.</listitem>
+ <listitem>Creation of KDMs for DCPs.</listitem>
+</itemizedlist>
</section>
</para>
<para>
-If your DCP is a Version File (VF), in other words it refers to
-another DCP's assets, you should import it as follows:
+If your DCP is a Version File (VF) (i.e.\ it refers to
+another DCP's assets) you should import it as follows:
</para>
<itemizedlist>
</chapter>
+<chapter xml:id="ch-player" xmlns="http://docbook.org/ns/docbook" version="5.0" xml:lang="en">
+ <title>Playing DCPs</title>
+
+ <para>DCP-o-matic includes a DCP player, and although it requires a
+ very high-speed CPU to play DCPs in full resolution, it can also
+ play DCPs at reduced resolutions with slower CPUs.</para>
+
+ <para>To use the player, start <guilabel>DCP-o-matic
+ Player</guilabel>, and load a DCP using the
+ <guilabel>Open</guilabel> option on the <guilabel>File</guilabel>
+ menu.</para>
+
+ <para>If you load a VF and/or encrypted DCP you can add your OV
+ and/or KDM using the appropriate options on the
+ <guilabel>File</guilabel> menu.</para>
+
+ <para>During playback the <guilabel>Performance</guilabel> area at
+ the bottom right of the window will give details of how many frames
+ are being dropped; these are frames that were not decoded from the
+ DCP quickly enough. If this number is high you can increase
+ performance at the cost of rendering quality by choosing an option
+ from the <guilabel>View</guilabel> menu. If you set the player to
+ decode at less than full resolution the DCP's data will be decoded
+ at this lower resolution, which is quicker than decoding at full
+ resolution.
+ </para>
+
+</chapter>
+
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<chapter xml:id="ch-config" xmlns="http://docbook.org/ns/docbook" version="5.0" xml:lang="en">
<title>Configuration files</title>