Hi fellow people!
I want to download & save a huge set of small videos (20min each) for a swimming course I paid for and they don't let me download , and this is driving me crazy.
The videos can be accessed via browser only, and I tried tubedowoader with no success (gives an error "empty keys" while attempting to download).
It depends on how the video is embedded and which format it is.
You can try to open Page Info (CTRL+I) > Media tab and see if you can find the video there (Firefox).
Sometimes you can right click and open frame in new window, which then allows you to save it (you may need to enable dom. event. contextmenu in about:config if they block right click)
yt-dlp works often enough. You can specify cookies for login information as command line options, first have to login in the browser though and look for the info in the console.
I would find the media stream requests in inspector and build a yt-dlp command adding same headers you find there. I was able to download some coursers like this.