| 摘要 |
The present invention allows favorable decoding on a reception side. Image data of pictures constituting moving image data is encoded to generate a video stream (encoded stream). In this case, the image data of the pictures constituting the moving image data is classified into a plurality of levels and encoded to generate a video stream having the image data of the pictures at the respective levels. Hierarchical composition is equalized between the low-level side and the high-level side, and corresponding pictures on the low-level side and the high-level side are combined into one set and are sequentially encoded. This allows the reception side to decode the encoded image data of the pictures on the low-level side and the high-level side with a smaller buffer size and a reduced decoding delay. |
