An information processing device comprising: a control unit; and a wireless communication unit configured to receive a video stream from another information processing device through wireless communication, receive, from the other information processing device, a Real Time Streaming Protocol, RTSP, GET_PARAMETER request to get capability information of the information processing device, transmit, to the other information processing device, a RTSP GET_PARAMETER response including the capability information, the RTSP GET_PARAMETER response including compatibility/incompatibility information indicating compatibility/incompatibility of the information processing device with a low power consumption mode and output format information concerning the resolution indicating if the video stream to be received from the other information processing device is to be displayed by the information processing device as main image or as sub image, receive, from the other information processing device, mode setting information notifying the information processing device which output format and power consumption mode is to be set, receive a video stream from the other information processing device, wherein the video stream has a resolution set by the other information processing device according to the output format information and is transmitted intermittently if the other information processing device has set a low power consumption mode, and reproduce and display the received video stream as main image or sub image according to the output format information. a control unit; and a wireless communication unit configured to receive a video stream from another information processing device through wireless communication, receive, from the other information processing device, a Real Time Streaming Protocol, RTSP, GET_PARAMETER request to get capability information of the information processing device, transmit, to the other information processing device, a RTSP GET_PARAMETER response including the capability information, the RTSP GET_PARAMETER response including compatibility/incompatibility information indicating compatibility/incompatibility of the information processing device with a low power consumption mode and output format information concerning the resolution indicating if the video stream to be received from the other information processing device is to be displayed by the information processing device as main image or as sub image, receive, from the other information processing device, mode setting information notifying the information processing device which output format and power consumption mode is to be set, receive a video stream from the other information processing device, wherein the video stream has a resolution set by the other information processing device according to the output format information and is transmitted intermittently if the other information processing device has set a low power consumption mode, and reproduce and display the received video stream as main image or sub image according to the output format information. receive a video stream from another information processing device through wireless communication, receive, from the other information processing device, a Real Time Streaming Protocol, RTSP, GET_PARAMETER request to get capability information of the information processing device, transmit, to the other information processing device, a RTSP GET_PARAMETER response including the capability information, the RTSP GET_PARAMETER response including compatibility/incompatibility information indicating compatibility/incompatibility of the information processing device with a low power consumption mode and output format information concerning the resolution indicating if the video stream to be received from the other information processing device is to be displayed by the information processing device as main image or as sub image, receive, from the other information processing device, mode setting information notifying the information processing device which output format and power consumption mode is to be set, receive a video stream from the other information processing device, wherein the video stream has a resolution set by the other information processing device according to the output format information and is transmitted intermittently if the other information processing device has set a low power consumption mode, and reproduce and display the received video stream as main image or sub image according to the output format information.