According to one embodiment, a content transmitter includes: a notification module and a content distribution module. The notification module is configured to notify, in response to a request from a content receiver, the content receiver of device information, container information, and content information. The device information indicates whether on-air content is distributed. The container information indicates a container including the on-air content. The content information includes content acquisition information indicating a destination from which the on-air content is acquired at when the on-air content is to be distributed to the content receiver. The content distribution module is configured to distribute the on-air content to the content receiver in response to a request from the content receiver based on the notified content information.