Linux Hint published a tutorial about how to enable Widevine DRM in Ubuntu.

How to Enable Widevine DRM in Ubuntu

Digital Rights Management (DRM) provides software and hardware level tools to protect digital content and facilitates its control, use, and distribution. Netflix, Amazon Prime Video, Disney+, and HBO are providing a huge library of content to their end-users. Widevine DRM is now used by almost all major streaming content providers. Even though you may have Widevine configured correctly on your system, streams from some content providers may not play at all or play in standard definition. How to enable Widevine DRM in Ubuntu is explained in this article.

How to Enable Widevine DRM in Ubuntu – Linux Hint