For businesses that provide video on demand and over-the-top services (also known as VOD and OTT), it is currently more vital than it has ever been to safeguard their content against unauthorised use and disclosure. The use of digital rights management (DRM) protected content has gained widespread acceptance among content creators and distributors as an additional tool to dissuade unlawful streaming. This is done with the goal of preventing illegal streaming and minimising any damage that may result from it. Through the use of watermarking, you will be able to distinguish each individual watching session's video stream from the others. There are several different approaches to watermarking, the most prevalent of which being bitstream modification, A/B watermarking, and client-side watermarking.
Session-based watermarking, which ensures that each individual user receives a one-of-a-kind copy of the content, can be applied to any streaming player or device and can be of great utility. Because all streaming sessions are sent from the CDN edge, video watermarking functions can be performed on the edge server. The latest watermarking technology enables service providers to integrate a watermark directly into the encoded bitstream. Meanwhile, the edge server employs a unique identifier to distribute material to end users.
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Before beginning the watermark pre-processing, the video asset that will be provided is given the ABR transcoding treatment first. With the help of this approach of video analysis and detection of potential change points in the video stream, encoding a WMID is made more simpler (Watermark Identifier). The metadata is encoded with the information that was obtained from this analysis when the bitstream is packaged.
The watermark token has been delivered: The video player will ask for a WMID before each individual viewing session that is initiated. A JSON web token that also operates as a WMID is generated by the platform management subsystem of the content provider.
When a request is made for a video, the edge server checks the WMID token to ensure that it is legitimate. In the event that the compliance tests are successful, the WMID that was provided in the token is utilised to incorporate a watermark into the ABR video that was requested. After that, the content delivery network (CDN) will distribute videos that have already been watermarked, ensuring that each customer will get their very own, personalised video stream.
Because it only requires one version of an asset to be watermarked, using edge computing for bitstream watermarking can reduce the storage and bandwidth requirements while raising the video latency. This is due to the fact that it only requires one version of an asset to be watermarked. If the watermark can be located and retrieved in advance, both the identification of leaks and the repair of any damage caused by those leaks will be made much simpler.
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