This is also happenng to me. Just a couple days ago when I click on an item and it has the "watch Presentation", in the box I click on the arrow to start the video and nothing. I took a closer look, and in the video it has 0:00 for time. So to me it says this video will run for 0 mins.
I use Microsoft Edge and this has never been a problem until 2 days ago. Thst is why I can here to see if it was just me.
I see suggestions to change browser. I don't know how to do that. I use an HP laptop I bought at QVC.