VIDEO ENCODING APPARATUS, VIDEO DECODING APPARATUS, VIDEO ENCODING METHOD, AND VIDEO DECODING METHOD

摘要

A video encoding apparatus appends decoding delay and display delay correction information to encoded video data in order to ensure that even when one or more pictures that are later in encoding order than a starting encoded picture in a video data stream to be spliced to a trailing end of another encoded video data stream have been discarded from among pictures contained in the video data stream, the starting encoded picture and its subsequent pictures can be continuously decoded and displayed by a video decoding apparatus. The correction information is calculated based on a decoding interval between each discarded picture and a picture that immediately precedes the discarded picture. The video decoding apparatus corrects the decoding delay and display delay of the starting encoded picture and its subsequent pictures by using the calculated correction information.

主权项

1. A video decoding apparatus for decoding video data encoded by inter-frame predictive coding, comprising:
a picture decoding/display time determining unit which uses information indicating that the encoded video data has been generated by splicing second encoded video data to a trailing end of first encoded video data and information indicating that one or more encoded pictures that are later in encoding order than a starting encoded picture in the second encoded video data spliced downstream of a splicing point at which the first encoded video data and the second encoded video data are spliced have been discarded to correct, based on correction information, a decoding delay for a picture that follows the starting encoded picture, and to correct, based on the correction information, display delays for the starting encoded picture and the picture that follows the starting encoded picture, and wherein the correction information carries a value calculated based on a decoding interval between each picture that is later in decoding order than the starting encoded picture, and that has been discarded from the second encoded video data, and a picture that immediately precedes the discarded picture in decoding order.