The topic of hardware/software level DRM and screen recorder issue will be discussed in a separate post. In Mac OS, FairPlay Streaming DRM in Safari browser also prevents screen capture using a screen recorder.Ĭhrome and Firefox browsers, however, do not prevent image capture because of software-level Widevine DRM on most supported operating systems, including Windows, Mac OS, and Linux. Here, it is impossible to capture the screen shot or video due to the OS level screen capture prevention function. Specifically, PlayReady DRM applies to IE11 (Win 8.1 or later) and Edge (Win 10) browsers of Windows OS. DRM technology can not prevent this type of content leakage. This is to record the video played on the screen with a separate camcorder or smartphone camera.
One of the most traditional content leakage cases is the so-called ‘cam version’ footage. Leakage case 1 - Screen recording using camcorder To protect the decrypted content in this final stage, you can apply various technologies such as ‘Hardware-level DRM’, ‘Trusted Execution Environment (TEE)’, and ‘High-bandwidth Digital Content Protection (HDCP)’.īut still there are cases where these technologies alone can not prevent content leakage. Though the content is transmitted securely to the client (playback device) in an encrypted state, eventually the client should decrypt the content for playback. However, even if DRM protects the content, it is difficult to prevent illegal leakage completely. You may have questions about the need for forensic watermarking. If I can stop illegal use of content with DRM, why do I need forensic watermarking? When a content copyright holder or content service provider discovers illegally distributed content, it can detect the watermark, track the user, stop the user from using the service, or take legal action to prevent further illegal spillage. Image by Carlos Alberto Teixeira from Pixabay
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