As install YT-dlp on your command line, (including ffmpeg). Log in to your site, and use this section to pass the cookie to your YT-dlp command with your video link.
I don't think yt-dlp can crack DRM... most sites don't bother using it.
I always try yt-dlp first with the website URL. If that doesn't work I either try the URL shown in the network tab in the debug menu or try to find a video source URL by inspecting the video html container.
Once I've found a URL using one of those methods I again throw it at yt-dlp
Dumb question, but does the page source show where the video is contained?
hmm, I tried view page source, on the opened page I found only one occurrence of word "video": <meta property="og:url" content="/video/751778"/>
it gives and error because it wants to download using their desktop addon, but via the dots you can select to copy the URL. In the Addon settings you can change copy URL to the default. the URL you get will work with yt-dlp
Video DownloadHelper?
Most of the time you can check your network tab in the dev console. If it's not there, throw the url at jdownloader.
Try How do I pass cookie to yt-dlp.
As install YT-dlp on your command line, (including ffmpeg). Log in to your site, and use this section to pass the cookie to your YT-dlp command with your video link.
I don't think yt-dlp can crack DRM... most sites don't bother using it.