How to customize Stream to look better and have a cover photo?

The videos load fast, work well, but the play button is weak at best and additionally, there seems to be no control over cover photos. Is there a recommendation on a player that does this or can you utilize stream and achieve these methods?

There are some options. Here’s info on a Play button (I’ve not tried this one):

You can also use a “Poster” image for the video (this has worked for me):