One pixel border around a video tag

gistfile1.html

<div id="border_wrap">
  <video width="640" height="360"></video>
</div>

<style>
  #border_wrap {
    width:640px; /* Same width than the video tag */
    height:360px; /* Same height than the video tag */
    padding:2px; /* If you want a 1px border add a padding of 2px, 2px border / 4px padding, etc */
    background-color:red; /* Change the color you want for the border here */
  }
</style>