Forensic Watermarking Overview
QuVIS has partnered with Thomson to integrate their Forensic Watermarking technology, NexGuard, into QuVIS
Digital Cinema playback systems.
Image forensic watermarking is a licensed product feature and a purchasable option. To enable image
watermarking on the QuVIS Acuity (2K model) a valid license file is required and the feature must be activated
(turned on). For product licensing information contact QuVIS Sales at 800.554.8116 or
.
Technical Overview
Image Watermarking is the process by which forensic content tracking data is embedded in the picture during
playback that is stored in subsequent legitimate or stolen copies of the content. The forensic data embedded in the
picture is not visibly evident during playback so as not to detract from the quality of the content viewing experience.
The following outlines the operational implementation of image forensic watermarking:
•
Image Watermarking on the QuVIS server platform does require that the server have a version
9.2.0
(or newer)
VIO
circuit card. Questions related to hardware compatibility should be directed to QuVIS Customer Support.
•
Image Watermarking will not be applied during playback of encrypted content unless a valid Watermarking
license is present and the feature is active (turned on).
•
Image Watermarking is automatically disabled during playback of unencrypted content per Digital Cinema
exhibition guidelines.
•
Image Watermarking is automatically disabled for encrypted content if the “WatermarkOff” keyword is present
in the <AnnotationText> element of the MPEG Interop KDM form currently in use. Provisions have been made
to migrate to the appropriate SMPTE KDM format (430-1) for disabling watermarking (forensic marking) once
the industry has adopted the SMPTE format as industry practice.
•
Forensic Image Watermarking is operational even during playback speeds that are less than real-time (1x).
•
The “LocationID” element, used to uniquely identify the playback source, is automatically assigned on a per
machine basis based upon implementation rules agreed upon between Thomson and QuVIS.
•
The forensic data embedded in the displayed picture is outlined in the DCI Digital Cinema System Specification
document, section 9.4.6.1.
•
Once the Forensic Watermarking feature has been licensed, the feature may be enabled/disabled via a
software switch only accessible to an Admin level user. This allows the feature to be properly setup. Once
Watermarking has been activated, turning it off will generate a security message in the logging system.
Subsequent playback of encrypted content with watermarking turned off or otherwise disabled will also
generate security messages to preserve the security audit trail.
•
Image Forensic Watermarking is available only for 2K Digital Cinema formats. Image watermarking is
supported when a 4K package is played as a 2K extraction.
QuVIS Acuity
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