| 摘要 |
The purpose of the present invention is to achieve, with ease, a high frame frequency service. Image data for each of a plurality of pictures configuring video-image data is categorized into a plurality of layers. Image data of each layer is coded such that pictures to which the image data refers belong to the same layer as the image data and/or a layer lower than the image-data layer. A container having a prescribed format and including a video steam having the coded image data of each layer is transmitted. As a result, only one program or one file is transmitted, and thus a service that can handle various frame frequencies can be provided, and administrative costs can be reduced. At the reception side, coded image data of layers equal to or lower than a prescribed layer can be selectively extracted and decoded, and played back at a frame frequency suitable for the playback capability of the device, thereby effectively promoting the distribution of reception devices. |
