An information processing terminal apparatus for sending an image taken of real-estate properties is provided. A video reproducing apparatus sends annotation information indicative of a tracking point to a video providing apparatus. At the video providing apparatus side, if spatial tracking of annotation information is enabled, the annotation information is overlay-displayed on a video currently being taken of the video providing apparatus. On the other hand, if spatial tracking of annotation information is disabled, a video having annotation information sent from the video reproducing apparatus is displayed on a display block 510 of the video providing apparatus without change, thereby assuring temporal and spatial lags.