f set to &lsquo;<samp>true</samp>&rsquo;, color bars are drawn in the event of a signal loss.
Defaults to &lsquo;<samp>true</samp>&rsquo;.
</p>
</dd>
<dt>&lsquo;<samp>queue_size</samp>&rsquo;</dt>
<dd><p>Sets maximum input buffer size in bytes. If the buffering reaches this value,
incoming frames will be dropped.
Defaults to &lsquo;<samp>1073741824</samp>&rsquo;.
</p>
</dd>
<dt>&lsquo;<samp>audio_depth</samp>&rsquo;</dt>
<dd><p>Sets the audio sample bit depth. Must be &lsquo;<samp>16</samp>&rsquo; or &lsquo