VIDEO STREAM TRANSMITTING DEVICE, VIDEO STREAM RECEIVING DEVICE, VIDEO STREAM TRANSMITTING METHOD, AND VIDEO STREAM RECEIVING METHOD

摘要

The present invention provides a video stream transmitting device, a video stream receiving device, a video stream transmitting method, and a video stream receiving method. According to one embodiment of the present invention, provided is a video stream transmitting method which comprises the steps of: sampling an UHD video steam to divide the sampled UHD video stream into at least one viewable HD video sub-stream, and encoding each of the divided at least one HD video sub-stream; performing a multiplexing process, including the at least one HD video sub-stream and signaling information which indicates a relation between the UHD video stream and the at least one HD video sub-stream; and transmitting the multiplexed at least one HD video sub-stream and signaling information.