: The entire DRM process is handled via software. This is common for browsers on PCs and Linux. Standard Definition (typically 480p) Why Browsers Use Widevine CDM

: The player forwards this to the Widevine License Server , which returns an encrypted license.

Widevine categorizes device security into three levels. The security level dictates the maximum playback resolution and the robustness of the content protection. This is the primary mechanism for "HD" vs "SD" playback limitations on different devices.