Hardware DRM means the keys and media decryption are handled inside a device's trusted execution environment or secure media path, isolated from the main OS and application code. It corresponds to the highest security levels - Widevine L1, PlayReady SL3000 - whereas software DRM (Widevine L3) does the work in ordinary memory.
The distinction is decisive for what you may serve: studios mandate hardware-backed protection for HD, 4K, and HDR, so a device reporting only software DRM is typically capped to standard definition. A platform must detect each device's security level at license time and tailor the resolution it offers - a core part of multi-DRM policy enforcement.
The handbook · 7 volumes
Fora Soft Video Engineering Handbook
Hardware DRM decides whether a device gets HD and 4K from studios or falls back to SD, so it shapes where you can sell premium tiers. Our seven-volume handbook covers the whole video stack; for hardware DRM start with Volume 3 on DRM, players and ABR, with Volume 2 on HLS and DASH packaging and Volume 1 on encoding. Written by Nikolay Sapunov, CEO at Fora Soft.
Studio contracts require hardware DRM for 4K, and you're unsure which devices qualify?
We will map hardware DRM levels across your device list and send a delivery plan with resolution caps per security level. 250+ video products shipped since 2005.
