DRM

DRM

Lot of different options

Apple Fairplay

DRM is pretty poorly documented, at least Apple's Fairplay solution.
this article is somewhat helpful

Playing Encrypted HLS content on iOS using swift

Errors

FairPlay Streaming is not supported on simulators

You need to disable fairplay streaming on simulators to run it appropriately.

*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[AVContentKeySession initWithKeySystem:storageDirectoryAtURL:legacyWebKitCompatibilityMode:] FairPlay Streaming is not supported on simulators'

HDCP

HDCP is a form of DRM that's baked into the HDMI standard. If you're watching media that uses it on a device that isn't compliant, you'll get a black screen. I have a splitter that I use to strip it myself because I have have one of those cheap Chinese projectors, and my cable box refuses to work with it otherwise.
Source of this comment ^

Video Tools

Anti DRM

scene ripping process context amazon / netflix

Reddit | Piracy wiki

DRM Stripping

how-to-strip-drm-from-wtv

ripping-streaming-video

Tagging

forensic-watermarking

References

How DRM works video

avplayer-swiftui-player-controls

playing-video-avplayer-swiftui

Apple DRM how does it work

Wiki | FairPlay