Video signal processing

摘要

A video signal processor comprises a first input for receiving a compressed first video signal (A) including parameters associated with the frames of the signal and relating to the compression. A decoder (D1) decodes the compressed first video signal whilst preserving the parameters in association with the frames. A second input receives additional video information (B) to be combined with the said first video information. A combiner (110) superimposes the additional video information on the first video information. An encoder (E2) encodes the combined video information. The encoder reuses the said preserved parameters for encoding at least parts of the combined information which are not derived from the superimposed video information. The encoder encodes the edges of the logo information to a higher picture quality than within the regions within the logo.