ng on what the socket is used for.
Default is 64KB.  See also <var>fifo_size</var>.
</p>
</dd>
<dt>&lsquo;<samp>bitrate=<var>bitrate</var></samp>&rsquo;</dt>
<dd><p>If set to nonzero, the output will have the specified constant bitrate if the
input has enough packets to sustain it.
</p>
</dd>
<dt>&lsquo;<samp>burst_bits=<var>bits</var></samp>&rsquo;</dt>
<dd><p>When using <var>bitrate</var> this specifies the maximum number of bits in
packet bursts.
</p>
</dd>
<dt>&lsquo;<samp>localport=<var>port</var></sam