</var>) and device ID (<var>didx</var>) of the first
i.e. fastest device in the list.
Select the platform and device using the command:
</p><div class="example">
<pre class="example">ffmpeg -opencl_options platform_idx=<var>pidx</var>:device_idx=<var>didx</var> ...
</pre></div>

</dd>
<dt><samp>-opencl_options options (<em>global</em>)</samp></dt>
<dd><p>Set OpenCL environment options. This option is only available when
FFmpeg has been compiled with <code>--enable-opencl</code>.
</p>
<p><var>options</var> m