title: ffmpeg image overlay and scaling
body: <p>I use ffmpeg for overlay one image by another. <br>
  Command:</p>
  
  <pre><code>ffmpeg -i bg.jpeg -i banana.png -filter_complex [1]scale=100:100[w];[0][w]overlay=5:H-h-5 out.png
  </code></pre>
  
  <p>it scaling only top image</p>
  
  <p>How I can scale both images: background and top ?</p>