I use MediaMTX. You can stream to it with whatever (I use OBS). You could even publish it to a website behind an iframe.

Well, you obviously have never used BitLocker. The first thing they ask you when you activate BitLocker is to pick one of 3 options:

1. Link to Microsoft Account.

2. Save to a File

3. Print Recovery Key (so you can write it down on a piece of paper or whatever)

There’s no “railroading”. There’s plenty of real things to not like Microsoft. No need to make them up.

Microsoft only has your key if you give it to them for convenience (by syncing to your Microsoft account), and they’re required by law to give anything stored in their servers if asked. There’s no conspiracy here.