Patent ID: 8799940
Filing Date: 2014-08-05
Classification: H04N

Abstract:
1. A method comprising: coding a video sequence in a video stream using a device, wherein the video sequence comprises content requiring a subscription and the video stream includes a base layer and one or more refinement layers associated with different user profiles, wherein for at least one image of the video sequence, coding comprises: coding in said base layer at least one portion of said image, which is common to all said different user profiles, wherein at least another portion of said image corresponding to an area of interest has been extracted from the base layer; and coding in at least one of said refinement layers said at least another portion of said image corresponding to said area of interest, said another portion being distinct from said at least one portion coded in said base layer or in another of said refinement layers; and generating a description of the video stream for transmission to a receiver of the video stream, which associates the at least one refinement layer with a given user profile for which the at least one refinement layer is intended, wherein users with the subscription are able to view said another portion of said image corresponding to the area of interest by processing and displaying the refinement layer, and wherein users without the subscription are able to process and display only the base layer, and are unable to process and display the refinement layer to view said another portion of said image.