Patent ID: 8982946
Filing Date: 2015-03-17
Classification: H04N

Abstract:
1. Decoding apparatus for decoding an encoded stream representing pictures, comprising: receiving means for receiving the encoded stream, history encoding parameters utilized in past encoding processes for the encoded stream and current encoding parameters utilized in the production of the encoded stream, said history and current encoding parameters including picture type information, wherein the current encoding parameters correspond to a most recent encoding process and the history encoding parameters correspond to more than two different successively performed encoding processes prior to the encoding process of the current encoding parameters; decoding means for decoding the received encoded stream utilizing the received current encoding parameters to produce image data; and output means for outputting the history encoding parameters, the current encoding parameters and the image data produced by said decoding means such that, when the image data produced by said decoding means is to be re-encoded by a succeeding encoder, the received history or current encoding parameters that include picture type information that coincides with a picture type in the re-encoded stream are selected by the succeeding encoder as utilization encoding parameters for re-encoding, wherein the history and current encoding parameters are included in the encoded stream, and said receiving means acquires the history and current encoding, parameters from the encoded stream.