title: How to add black borders to video
body: <p>So I'm using ffmpeg to convert a video to 1920*1080 px, I found two ways to do so, the first one would be to stretch the video to 1920*1080, but then it looks kinda stretched. I used this command for this:</p>
  
  <pre><code>./ffmpeg_darwin -i SRC -vf scale=1920:1080,setdar=16:9 DEST
  </code></pre>
  
  <p>The other option is the same without setdar but this just adapts the resolution to the one it started from (1728*1080).</p>
  
  <p>I would like to fill the 192 pixels of the width with a black border. Is there some kind of option to do so? Or is there maybe another command line that could achieve this?</p>
  
  <p>Thanks for your help :)</p>