An information processing apparatus and method

To provide an information processing apparatus and method, a program, and a recording medium, making it possible to correctly calculate the round-trip transmission between the transmitting terminal receiving the data communication delay. Over time packet transmission unit (221), MAC packet transmission unit (241), the data packet transmitted to the receiving apparatus is sent out to the network (103), the time-stamping unit (244) comprises a time stamp of transmission given package. When removed from the acknowledgment response packet transmitted from the network reception device (103), the time-stamping unit (244) comprising imparting stamp packet transmission time. Time stamp packet transmission time and the reception time stamp holding unit (222) holding, for transmitting the round trip delay is calculated. The present invention is applicable to a video server.