Abstract:
Data that is to be transmitted to a viewer is encoded multiple times at multiple playback speeds. For example, a video advertisement may be encoded to play at normal speed, 4x normal speed, and 16x normal speed. Frames from the multiple encoded streams are combined to form a combined encoded stream that will play full motion video at each of the respective playback speeds. Thus, when a user elects to watch the video at a speed other than the slowest speed, the decoder will be able to decode the video at the selected speed to provide a full motion video output stream to the viewer at the selected playback speed.
Abstract:
There is provided a method and system for enhancing content security including a content corruptor module having an input for encoded content, a content parameter modifier coupled to the input and having outputs for modified content and fixer data, a content encoder coupled to the output for modified content and having an output for encoded modified content and a fixer data encoder coupled to the output for fixer data and having an output for encoded fixer data. The modified encoded content discourages copying as it is not usable with the corrector data. Modification can be made to a number of different parameters, for example DCT parameters, reversible wavelet coefficients, block order, motion vectors may be modified by the corruptor in a way that can be reversed in the pixel domain after motion compensation, such as reversing the frame and vectors, or offsetting them, or scaling. Quantization matrices could be altered so that the pixel data needs to be scaled. Reversible wavelet coefficients may be modified in a manner similar to DCT. Block order could also be altered so that blocks and their intra-block prediction need to be swapped
Abstract:
A method and apparatus is disclosed for enabling and facilitating the licensing of audio portions of audio-video assets per individual copy of the asset. The method and apparatus involves omitting unlicensed portions of the audio content from the asset and instead inserting tags identifying the omitted audio portions and distributing the audiovisual asset, whereupon each individual distributee may obtain licenses for the unlicensed audio portions of the asset and then accessing and playing those audio portions during playback of the asset.