allows for example image to be added to filter-based scripts

index.html

@@ -854,6 +854,10 @@
             <dt>signalstats=out=brng:color=cyan[out]</dt><dd>tells ffplay to use the signalstats command, output the data, use the brng filter, and set the color of out-of-range pixels to cyan</dd>
             <dt>"</dt><dd>quotation mark to close command</dd>
           </dl>
+          <div class="sample-image">
+            <h4>Example of filter output</h4>
+            <img src="img/brng.gif" alt="BRNG example">
+          </div>
           <p class="link"></p>
         </div>
       </div>