Abstract: A computer system arranged to determine whether a candidate media-component matches one or more reference media-components, wherein the computer system comprises: at least one processing device arranged to receive the candidate media-component and the at least one processing device further comprising: a window generator arranged to select a portion of the candidate media-component; a fingerprint generator arranged to generate a fingerprint from the portion of the candidate media-component selected by the window generator, wherein the at least one processing device is arranged to cause the window generator to move through the candidate media component thereby selecting a plurality of portions of the candidate media component from at least some of which the fingerprint generator is arranged to generate a candidate fingerprint thereby creating a sequence of candidate fingerprints; a comparator arranged to compare at least some of the candidate fingerprints within the sequence of candidate fingerprints against fi

Abstract: A method for marking video media-content, comprising a plurality of frames, with a user ID. The method includes arranging a media-delivery platform to have a plurality of target devices connected thereto and further arranging the media-delivery platform to deliver the video media-content to a specified target device of the target devices, at which the user ID is being used. An image is overlaid over at least some frames of the plurality of frames as the video media-content is displayed at the specified target device. The image encodes the User ID and comprises a plurality of zones, the zones being arranged to encode the User ID. A visual property of the image is arranged to vary within at least some of the zones, and the image is arranged such that when the image is overlaid on the video media content, the image is at least substantially imperceptible to a user.

Abstract: A computer system arranged to determine whether a candidate media-component matches one or more reference media-components, wherein the computer system comprises: at least one processing device arranged to receive the candidate media-component and the at least one processing device further comprising: a window generator arranged to select a portion of the candidate media-component; a fingerprint generator arranged to generate a fingerprint from the portion of the candidate media-component selected by the window generator, wherein the at least one processing device is arranged to cause the window generator to move through the candidate media component thereby selecting a plurality of portions of the candidate media component from at least some of which the fingerprint generator is arranged to generate a candidate fingerprint thereby creating a sequence of candidate fingerprints; a comparator arranged to compare at least some of the candidate fingerprints within the sequence of candidate fingerprints against fi

Abstract: A method for marking video media-content, comprising a plurality of frames, with a user ID. The method includes arranging a media-delivery platform to have a plurality of target devices connected thereto and further arranging the media-delivery platform to deliver the video media-content to a specified target device of the target devices, at which the user ID is being used. An image is overlaid over at least some frames of the plurality of frames as the video media-content is displayed at the specified target device. The image encodes the User ID and comprises a plurality of zones, the zones being arranged to encode the User ID. A visual property of the image is arranged to vary within at least some of the zones, and the image is arranged such that when the image is overlaid on the video media content, the image is at least substantially imperceptible to a user.

Abstract: A method of securing and/or tracing video media-content which comprises a plurality of frames, the method comprising, receiving at least one candidate media-content which has been determined to have a fingerprint substantially the same as a reference fingerprint generated for the video media-content, processing the candidate media-content after comparison with the video media-content used to generate the reference fingerprint to temporally align the candidate media-content to identify which frames contain the unique identifier; and extracting the unique identifier from the identified frames within the or each candidate video media-content to identify the user ID held within the unique identifier.

Abstract: A method of securing and/or tracing video media-content which comprises a plurality of frames, the method comprising, receiving at least one candidate media-content which has been determined to have a fingerprint substantially the same as a reference fingerprint generated for the video media-content, processing the candidate media-content after comparison with the video media-content used to generate the reference fingerprint to temporally align the candidate media-content to identify which frames contain the unique identifier; and extracting the unique identifier from the identified frames within the or each candidate video media-content to identify the user ID held within the unique identifier.