Abstract: A content delivery system according to the present invention includes a repeater for relaying content and a user terminal for transferring the relayed content to a TV receiver. The repeater includes: a data obtaining unit that mounts a first port for obtaining video data from a video server via an IP network and a second port for obtaining emergency data from an emergency server directly connected to the repeater; and a data preferential transfer unit that transfers the emergency data obtained from the second port to the user terminal in preference to the video data obtained from the first port. The user terminal includes a data creation unit for performing format conversion of the video data and the emergency data received from the repeater to create display video data to be displayed on the TV receiver.