rsquo;</dt>
<dd><p>Matches the stream with this index. E.g. <code>-threads:1 4</code> would set the
thread count for the second stream to 4. If <var>stream_index</var> is used as an
additional stream specifier (see below), then it selects stream number
<var>stream_index</var> from the matching streams. Stream numbering is based on the
order of the streams as detected by libavformat except when a program ID is
also specified. In this case it is based on the ordering of the streams in the
program.
</p></dd>
<