Patent ID: 6993080
Filing Date: 2006-01-31
Classification: H04N

Abstract:
1. A signal processing system comprising: a decoder for decoding a first compressed digital video bitstream whilst preserving the compression parameters thereof, the compression parameters including a first buffer occupancy value V a signal processor for processing the decompressed bitstream; and an encoder for compressing the processed bitstream to produce a second compressed bitstream having a target bit rate, with reuse of the said compression parameters of the first bitstream, the second bitstream having a second occupancy value V wherein the encoder controls (i) the target bit rate of the second bitstream and (ii) the recoding of the second bitstream to meet the said target bit rate, the target bit rate being varied in dependence on one or both of (a) V the degree of reuse of the said preserved parameters being varied in dependence on one or both of (a) the degree to which V