Patent ID: 9083993
Filing Date: 2015-07-14
Classification: H04N

Abstract:
1. A video/audio data multiplexing apparatus for multiplexing video data with audio data comprising: a control unit which determines, for each picture in the video data and for each frame of the audio data, first decode/display time information and second decode/display time information each for determining the decode time and display time of the picture and the frame; a video packet generating unit which appends the first decode/display time information and second decode/display time information for the picture to a video packet that carries encoded data of the video data, the encoded data being generated by encoding the video data without applying frame re-ordering; a media packet generating unit which appends the first decode/display time information and second decode/display time information for the frame to a media packet that carries encoded data of the audio data; and a packet multiplexing unit which generates a data stream by multiplexing the video packet and the media packet and outputs the data stream, wherein the first decode/display time information includes information indicating a time at which to display the video data and the audio data in synchronized fashion when the decoding unit of the video data is a picture, the second decode/display time information includes information indicating a time at which to display the video data and the audio data in synchronized fashion when the decoding unit of the video data is a sub-picture obtained by dividing the picture into a plurality of sub-pictures and information indicating a sub-picture decoding time needed to decode the sub-picture, and the decode time and display time of the picture determined based on the second decode/display time information are earlier than the decode time and display time of the picture determined based on the first decode/display time information.