Movies purchased from the Apple TV app or Amazon Prime Video.
Some professional training platforms protect their lectures to prevent piracy. The Pros and Cons Piracy Prevention Movies purchased from the Apple TV app or Amazon Prime Video
Often restricted to specific apps (e.g., iTunes files may only play in Apple TV). in many regions
Understanding DRM-Protected MP4s: Security vs. Accessibility copyright law. For most users
There are many tools online that claim to "strip" DRM from MP4s. Users should exercise caution, as bypassing DRM can violate Terms of Service and, in many regions, copyright law. For most users, staying within the provider's ecosystem is the safest and highest-quality way to enjoy protected media.