Notifications displayed when page requests DRM media to be displayed is really annoying as it takes up space for the website and stays there until it is manually dismissed, even after page is changed and no longer asks for DRM.
Displaying DRM information is still valuable even when user specifically decided to not enable it (e.g. as it may affect available types of content or playback quality), but this information has to be less invasive. Please consider displaying it as an icon next to the URL bar instead.
This way it will still be noticeable, but it will no longer disrupt the browsing experience of users who intentionally not want to use DRM.
In addition to that any information about DRM covering other elements of the UI should be automatically closed on URL change, so it doesn't artificially stay there even if DRM content is no longer requested.