Digital Rights Management (DRM) is important to know something about if you want to start a video platform. You want to prevent that anyone can download your videos illegally. To give you a little more insight into the different forms and the technology behind it, we cover the most common types of DRM in this blog.
The most common DRM systems which are typically used with the most common streaming protocols all follow the “Common Encryption” scheme (CENC). This standard was developed under the working group “MPEG“. It allows for interchanging DRM systems with the same encrypted content. This is convenient, as it requires encrypting the video content only once, and allowing decryption (playback) via different DRM systems.
3 most common DRM types
Microsoft PlayReady DRM
This type was developed by Microsoft and is typically implemented in combination with MSS or MPEG-DASH.
This type was developed by Google and is typically implemented in combination with MPEG-DASH.
This type was developed by Apple and is implemented in combination with HLS.
Digital Rights Management stands for security
DRM allows a wide range of options such as restricting playback to a certain device or to a certain time interval. In other words: Full “rights management”.
Alternatively more basic technology is often employed to achieve at least a basic level of security through video encryption. But without the additional range of options offered by a DRM system. A popular example is the “Advanced Encryption Standard” (AES). This type is often implemented in combination with HLS. Because the implementation of “FairPlay” is often more involved than that of “WideVine” or “PlayReady”.
In order to secure video playback on the widest variety of platforms and devices, you should include PlayReady and Widevine in your proposition. For HLS ideally you would use FairPlay. However depending on requirements AES can be used as a fallback alternative.