System and methods for protecting video content

摘要

Systems and methods for content-protecting video codecs are described. At least one embodiment of the invention comprises a system for protecting video content comprising computer memory comprising a stored set of instructions for processing video data; and at least one microprocessor configured to process the video data according to the stored set of instructions, the stored set of instructions requiring identification of data to be removed, at least a portion of which is essential to obtaining a visually acceptable reproduction of video, the stored set of instructions being further configured to replace removed data with data-hiding values, wherein the visually acceptable reproduction of video cannot be generated without a key that enables recovery of enough of the removed data from the data-hiding values that replaced the removed data.

主权项

1. A system for protecting video content comprising:
computer memory comprising a stored set of instructions for processing video data; and at least one microprocessor configured to process the video data according to the stored set of instructions, the stored set of instructions configured to: receive encoded video data from a video source, said video data comprising at least one video frame; apply at least one wavelet transform to a selected frame of the at least one video frame k iterations to generate image data Pk and associated support spaces, where k is an integer greater than 1, wherein each of said iterations re-represents a preview of the previous iteration as a quarter-size preview, together with three quarter-size support spaces; separate said image data Pk into dataset A and modified image Pk′; wherein reproduction of the selected frame of the at least one video frame requires said dataset A and said modified image data Pk′; re-encode and compress said dataset A of said image data Pk; apply data-hiding operation to said re-encoded and compressed dataset A to generate a modified dataset A′ such that dataset A requires a key for reconstruction from dataset A′; re-encode and compress said modified image Pk′; and output at least one video stream comprising a frame header, said modified dataset A′ and said re-encoded and compressed modified image Pk′.