o;s&rsquo;
for subtitle, &rsquo;d&rsquo; for data, and &rsquo;t&rsquo; for attachments. &rsquo;v&rsquo; matches all video
streams, &rsquo;V&rsquo; only matches video streams which are not attached pictures, video
thumbnails or cover arts.  If <var>stream_index</var> is given, then it matches
stream number <var>stream_index</var> of this type. Otherwise, it matches all
streams of this type.
</p></dd>
<dt><samp>p:<var>program_id</var>[:<var>stream_index</var>]</samp></dt>
<dd><p>If <var>stream_index</var> is 