Abstract: A transmitting apparatus for transmitting transmission data to a receiving apparatus is disclosed which includes: means for obtaining apparatus information of the receiving apparatus; a source of video data and its auxiliary data; means for determining whether or not to synthesize the video data and the auxiliary data with each other, based on the obtained apparatus information; means for synthesizing, according to the above determination, the video data and frame data which is the auxiliary data associated with a frame of the video data, to generate the transmission data, wherein the frame data is included in a video data arranging area of the video data; and means for transmitting the transmission data to the receiving apparatus. Furthermore, a receiving apparatus is also disclosed which extracts the frame data from the video data arranging area of received data.