Hi Morgan LeClair - I did a little research into this one and learned a couple of things:

• First off, from my own experience, many video tools offer you the ability to preconfigure the video screen animation or still preview prior to surfacing the file in your Digital Workplace. As an example, we use Vidyard, which allows us to assign these elements and then embed the video.
• I did find some HTML coding references that might allow you to alter the screen or to provide a new screen altogether. I haven't tried this myself but sharing the article with you here.