Transmission apparatus, transmission method, reception apparatus, and reception method

A reception method, comprising:

• receiving a description and encoded image data on a low layer side and a high layer side, wherein
• the description includes first identification information of the low layer side of the encoded image data, and second identification information of the low layer side and the high layer side of the encoded image data, and
• the encoded image data on the low layer side and the high layer side includes information for identifying a layer to which the encoded image data belongs in a network abstraction layer (NAL) unit of a respective picture of the encoded image data,
• on the basis of the description and a decoding capability, decoding only the encoded image data on the low layer side or decoding the encoded image data on the low layer side and the high layer side, and
• setting a frame rate of the decoded image data on the basis of a display capability.

A non-transitory computer-readable storage medium storing computer-readable instructions thereon, which, when executed by a reception apparatus, cause the reception apparatus to perform a method, comprising:

• receiving a description and encoded image data on a low layer side and a high layer side, wherein
• the description includes first identification information of the low layer side of the encoded image data, and second identification information of the low layer side and the high layer side of the encoded image data, and
• the encoded image data on the low layer side and the high layer side includes information for identifying a layer to which the encoded image data belongs in a network abstraction layer (NAL) unit of a respective picture of the encoded image data,
• on the basis of the description and a decoding capability, decoding only the encoded image data on the low layer side or decoding the encoded image data on the low layer side and the high layer side, and
• setting a frame rate of the decoded image data on the basis of a display capability.