FIELD: data processing.
SUBSTANCE: invention relates to image decoding techniques. Transmitting device, comprising an image encoding unit for performing hierarchical encoding of image data of frames constituting moving image data, to generate a first data stream comprising encoded frame image data from the low-level side, and a second data stream comprising encoded frame image data from the high-level side, wherein the encoded image data have a NAL unit structure, and the image encoding unit is configured for insertion, determined by the level of the value for the first data stream together with the level determined for the data bit stream formed by combining the first data stream and the second data stream into a NAL SPS unit for the first data stream.
EFFECT: high decoding efficiency.
7 cl, 18 dwg
