Won't install.

This worked PERFECTLY: Go to the substack page that you like, then click on the icon for this extension. A new page (served from stream.mux.com) will load showing you the hi-res video. A right-click will then give you the option to save. It's that simple.

doesn't work

Worked for me.

Works perfectly don't know what you all are on about

I can see the link but it does not respond?

Doesn't work. You have to right click to download the video, but it saves it as a json file, not as a video file.

I couldn't get it to work on this link: https://chemtrails.substack.com/p/chemtrails-town-hall-citizen-testimony
I don't know whether it's because there are multiple videos here or some other reason. I tried installing Brave and its downloader with the same problem, so maybe it's my fault or the site's fault. I haven't tried other substacks with embedded videos yet.

Works perfectly. I would like to note that the 1-star review from ~14 days ago seems to be mistaken when it says this doesn't work. The videos open in a new tab for me, as described in that review, but the new-tab instance of the video is the raw .mp4 file, so I can simply hit Ctrl+S to save the video to disk. (It's possible that the 1-star reviewer ACTUALLY IS seeing non-working behavior, but his or her description matched my working behavior so closely I felt this was worth bringing up.) Only reason I don't give it 5/5 is I wish it was open source. But works great, so I'll take what I can get for now.