he results list are sorted based on their
performance with the fastest device listed first. The user can subsequently
invoke <code>ffmpeg</code> using the device deemed most appropriate via
<samp>-opencl_options</samp> to obtain the best performance for the OpenCL
accelerated code.
</p>
<p>Typical usage to use the fastest OpenCL device involve the following steps.
</p>
<p>Run the command:
</p><div class="example">
<pre class="example">ffmpeg -opencl_bench
</pre></div>
<p>Note down the platform ID (<var>pidx