METHOD AND SYSTEM FOR REPLACING SECTION OF ENCODED VIDEO BIT STREAM

摘要

PROBLEM TO BE SOLVED: To prevent deterioration in picture quality at the time of edition. SOLUTION: A start point and an end point in an encoded bit stream are determined in order to remove a section of an encoded video. Start point and end point addresses of encoded data are calculated by summing up bits consumed by each picture, the number of bits of a sequence header of each picture, the number of bits of each Group of Picture (GOP) header, and the total number of stuff bits. Processing to prevent decoding of unrelated signal components is executed in order to encode a bit to be inserted. This processing is performed by judging the last picture before an editing point and using the last picture as a reference frame related to frames after the editing point. A short period of the first video encoded by the first quantization value is included at the end of the replaced video. COPYRIGHT: (C)2006,JPO&NCIPI