It's almost always going to be easier to obtain them through other means.

In the past, I've had good luck with StreamFab. It's expensive and Mac/Windows only, I believe. I had a smallisj use case and was able to automate mac address changes on a VM so could get by with the free trial. Been a while, so I can only vouch that it used to work well, not sure if anything's changed since then.

There was a pretty widespread crackdown on widevine decryption keys last year, iirc. That's the sort of thing you'd be looking for if you wanted to continue searching out other tools or possibly roll your own.

I've given up on any direct download methods. It's a game of wack-a-mole and the players often don't share their tricks anymore, or charge a pretty penny.

Try OBS screen recording if you want a free option.

For anything that doesn't work with, I've just gone the extra mile and now have a Streaming Stick plugged into an HDMI Splitter and then piped into an HDMI capture card, which then pipes into OBS. My setup can only do 1080p SDR, but that's enough for me.

Redfox Anystream. Nothing higher than 1080p though.

Not sure specifically about Amazon but there's always the hole between the video cord and the monitor where output is unencrypted. Do these movies not have a purchase and download or DVD option out there?

I mean you could record through a capture card.

As long as you have hardware acceleration turned off you can screen capture with obs

Are you sure someone hasn't already posted them on one of the torrent sites?