RECEPTION DEVICE, RECEPTION METHOD, TRANSMISSION DEVICE, AND TRANSMISSION METHOD

摘要

The present invention enables subtitles (graphics) to be favorably displayed super-imposed on a video. A container of a prescribed format is received, the container including a video stream having ultra-high definition (UHD) resolution video data, and a subtitle stream having subtitle data. The video stream is decoded to obtain video data. The subtitle stream is decoded to obtain subtitle bitmap data. If the subtitle resolution does not conform to UHD resolution, subtitle positional conversion is performed on the subtitle bitmap data. The subtitle bitmap data which was subjected to the positional conversion is superimposed onto the video data and video data for display is thereby obtained.