<para>
From this dialogue you can select the required output format,
output file and, in the case of MP4, the quality of the output
- file. Higher quality files will, of course, be larger.
+ file (by setting the <ulink url="https://trac.ffmpeg.org/wiki/Encode/H.264#crf">CRF value</ulink>).
+ </para>
+
+ <para>
+ The useful range of CRF values is from 17 (high quality but large file size) to 28 (smaller file size and still reasonable quality).
+ </para>
+
+ <para>
+ The time needed to export, and the resulting size, depend partly on the DCP resolution set in the project. To change that, see chapter <xref linkend="ch-dcp"/>.
</para>
<para>
<title>Verifying DCPs</title>
<para>
- The player also offers a DCP checker. To check a DCP,
+ The player also offers a DCP verifier. To check a DCP,
open it and then select <guilabel>Verify DCP</guilabel> from the
<guilabel>Tools</guilabel> menu.
</para>
<para>
- The validator will report three kinds of problems:
+ The verifier will report three kinds of problems:
</para>
<itemizedlist>
- <listitem>Errors — serious problems with the DCP that are likely to cause problems on playback.</listitem>
- <listitem>Bv2.1 errors — errors described by the <ulink url="https://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=9161348">SMPTE Bv2.1 standard</ulink>.</listitem>
- <listitem>Warnings — small problems that may not matter.</listitem>
+ <listitem><emphasis>Errors</emphasis> — serious problems with the DCP that are likely to cause problems on playback.</listitem>
+ <listitem><emphasis>Bv2.1 errors</emphasis> — errors described by the <ulink url="https://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=9161348">SMPTE Bv2.1 standard</ulink>.</listitem>
+ <listitem><emphasis>Warnings</emphasis> — small problems that may not matter.</listitem>
</itemizedlist>
+ <para>
+ The following sections list what the verifier checks for in each category.
+ </para>
+
<section>
<title>Errors</title>
<xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="verify_errors.xml"/>