Browser does not currently recognize any of the video formats available

Hi, just joined this community. I use Komodo Edit 8.5, until recently it was fine. I am now getting this message if I try to see a video in Komodo Preview Browser: “Your browser does not currently recognize any of the video formats available”. Previously I could see videos no problem. Please would anyone help, is there a menu with items to check/select?
Thank you

The browser preview in Komodo is only meant for previewing some fairly basic changes, it is not meant to simulate a full fledged browser. It appears you have simply ran into its limits.

Thank you. I would agree with you if I was looking to get more than a basic view. However, problem is that I do not see anything at all other than a black screen.

That sounds different from the original issue you were reporting. Please clarify what you are doing and what you are seeing?