Devices and methods for obtaining media stream with adaptive resolutions. The device includes a receiver in communication with a processor, and a transmitter. The receiver is configured to receive a plurality of media signals. The processor is programmed to communicate with a terminal device in the home network, obtain a corresponding display resolution of the terminal device, and select a media signal according to the corresponding display resolution of the terminal device and a video resolution of the media signal. The transmitter is configured to transmit media stream corresponding to the selected media signal to the terminal device.