VdoCipherDynamic Watermarking
Dynamic watermarking overlays visible, viewer-identifying details such as name, email, or IP address on the video during playback, moving position and varying opacity so it cannot be cleanly cropped. Its power is deterrence: a viewer will not screen-record content stamped with their own identity, and a leaked copy points straight at its source.
What is Dynamic Watermarking?
Dynamic watermarking overlays visible, viewer-identifying details, such as name, email, or IP address, on the video during playback. Unlike a static logo, the overlay moves position and varies opacity so it cannot be cleanly cropped or masked out.
How It Works
At playback time, the platform composites the current viewer's identity onto the video as a moving overlay. Because the text is tied to the individual watching and shifts around the frame, any screen recording or photograph of the screen carries the recorder's own identity, embedded in a way that is hard to remove without damaging the footage.
Why It Is High-Leverage for Course Platforms
- Deters screen recording: A student will not record lectures stamped with their own name and email.
- Points to the source: A leaked copy identifies who leaked it.
- Covers DRM's blind spot: DRM cannot stop a camera or screen recorder on desktop web; a moving watermark deters both.
For Platform Owners
Dynamic watermarking is most effective paired with DRM: DRM blocks downloading, and the watermark deters and traces the capture routes DRM cannot close. VdoCipher applies viewer-identifying moving watermarks as a standard layer alongside Widevine and FairPlay.