There are many other uses for forensic watermarking beyond identifying the source of piracy of OTT contentApril 18, 2022
There are many other uses for forensic watermarking beyond identifying the source of piracy of OTT content.
To protect premium content that is streamed via IPTV and over-the-top (OTT) platforms, forensic watermarking is becoming a widely accepted security mechanism.
Applications that benefit from watermarking include the following, which are outlined below:
- Copyright protection: Watermarking is an excellent way for studios to track the source of content leaks because of the unique code identifiers’ obfuscation. It is impossible for the attackers to forge the watermark because it is embedded in real time. DRM protected content benefits from the addition of a watermark because it provides end-to-end copyright protection and safeguards the business-critical revenue model for media companies.
- Tampering identification: As an added bonus, forensic watermarking has an anti-tampering technology built in. An embedder for watermarking streams the content and then inserts identifiers into it that are unique to each copy. Similar to a checksum, the video stream is encoded to ensure its integrity. Disturbing the video stream in any way affects the watermark as well. Each frame of the pirated video content is analysed by the watermark detector, which compares the original watermark with the payload. The tampering location and perpetrator will be revealed by the session information.
- Steganography: Forensic watermarking offers exciting possibilities in this field. In order to prevent man-in-the-middle attacks, watermarking protects the secret information contained in media files by making it robust and undetectable. Using watermark payload detection and session-based manifest identification, it also prevents unauthorised malicious third parties from accessing or stealing data.
- Traffic analysis: It is required to establish end-to-end monitoring and integrity across the entire data loop in video streams. Non-blind approaches and invisible watermarks are used in flow watermarking to enable active traffic analysis. Every network packet transmitted between two systems is identified by a unique identifier, which also identifies an anonymous communication system. In this way, watermarking aids in the detection of intrusions, the enforcement of traffic laws, and the implementation of effective mitigations.
- Access control: For sensitive information, restricting access is essential to keep it from being accessed by people who are not authorised to see it. To determine whether or not the media payload is present in the streamed media, the watermark inserts serve as an authentication mechanism for the data. Watermarks can only be decrypted using keys that are only available to the intended recipients. This also ensures privacy protection.
In order to protect DRM-protected content from looming attackers, forensic and video watermarking is becoming an essential tool for secure and hassle-free premium content delivery across video streaming services.
Similarly, the width and height of the watermark on the output video stream are depicted by these parameters, which can either be absolute or relative. As long as the watermark width is not specified, it will be 0.12 times the video’s actual width. The other parameter is derived from the aspect ratio of the source watermark image if only one of the values is given. Position and size of the output video stream should be set to the video’s proportion values if its resolution changes frequently.
Video stream watermark start and end times are determined by timeline parameters. Both are required, string-type fields, and expressed in seconds. Starting at 0 and lasting until the end of the video are both default values that can be overridden.
Unlike image watermarks, text watermarks have only two parameters: top and left, both of which represent offsets in relation to the watermark’s original location on the page. Only positive integers can be used in either of these systems.