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 encoding method for generating spliced encoded video data by splicing together first video data and second video data both encoded using inter-frame predictive coding, comprising:
obtaining decoding delay and display delay correction information for ensuring that even when one or more pictures that are later in encoding order than a starting encoded picture in the second video data to be spliced to a trailing end of the first encoded video data have been discarded from among pictures contained in the second video data, the starting encoded picture and subsequent pictures contained in the second encoded video data can be continuously decoded and displayed by a video decoding apparatus, and appending the correction information to the spliced video data; and discarding from the spliced video data any picture that is later in encoding order than the starting encoded picture and that is not guaranteed to be decoded correctly if decoding is started from the starting encoded picture, and wherein the correction information is calculated based on a decoding interval between each discarded picture and a picture that immediately precedes the discarded picture in decoding order.