Transmission video data is obtained by performing photoelectric conversion on input video data having a level range of 0% to 100%*N (N is a number larger than 1). A container including a video stream obtained by encoding the transmission video data is transmitted. Information of an electro-optical conversion characteristic of each predetermined unit of the transmission video data is inserted into a layer of the video stream and/or a layer of the container. For example, a predetermined unit is a scene unit or a program unit. The operations make it possible to perform appropriate photoelectric conversion on HDR video data according to image content and transmit resulting data.