Rather of storing video files on their devices, the vast majority of users now view films on over-the-top (OTT) services such as Netflix and Amazon Prime.
Due to the ease with which users may access the same videos on different platforms, content creators and owners face a variety of issues, such as piracy and the limitation of concurrent streams on a single subscription plan.
In addition, providing HD content to a user’s device while assuring proper hardware and software security to avoid leaks is a major business concern.
A digital rights management (DRM) system is capable of resolving these concerns.
Widevine by Google is a popular DRM an anti-piracy tool for HD content that is compatible with Chrome, Firefox, Android OS on mobile devices, and smart TVs
Widevine safeguards video streams on hardware, software, and code levels.
CENC, or common encryption protection system, defines the encryption standards and key mapping techniques utilised by a DRM content decryption module (CDM) to decode video files on the client device.
To enable adaptive bitrate video playing on client devices, Widevine leverages CENC protocols to link video files to licencing keys supplied by content packagers.
Due to the possible income loss that might occur from allowing HD material to be accessed on unsecure devices. Adaptive streaming is an absolute requirement for content providers.
According to Widevine’s definition of L1, L2, and L3 security levels. L1 is the most secure level for streaming premium HD videos from major OTT providers.
Widevine relies on the trusted execution environment (TEE) of the device’s CPU to offer superior video.
The TEE safeguards code and data within a safe processor zone.
Making it more secure and less susceptible to hacking since it is processed independently. Of operating system activities and may utilise the entire CPU and memory capacity.
The encryption keys for TEE applications are built into the processor chip, making tampering impossible.
Using the TEE to create a distinct zone for Widevine’s code execution provides L1 security.
Within the TEE, video and encryption are handled simultaneously.
This integration is carried out with the assistance of the VideoJSContrib EME plugin. This plugin supports the Encrypted Media Extensions requirements and makes it. Possible for the Video.js players to connect with the content decryption module (CDM) of web browsers. Before the CDM begins to decode the video portion.
The user is given the ability to pass the DRM licencing URI using the plugin. In addition, the developer has the option of providing peculiar methods that are unique. To a source as well as the combination of its key system and codec.