Patent ID: 8165457

Claim:
A method of recording a digital stream signal on a recording medium comprising a data area configured to store the digital stream signal including video data of MPEG-4 AVC or H.264 standard and a management area configured to store management information for managing the digital stream signal, wherein the digital stream signal includes a data structure comprising an access unit delimiter, a sequence parameter set, a picture parameter set, a supplemental enhancement information, and a slice, the method comprising: acquiring a component type from a program map table included in the digital stream signal to detect a vertical resolution of the video data; acquiring a packet of the MPEG-4 AVC or H.264 standard from the digital stream signal, and checking if the packet includes the sequence parameter set; acquiring a value of the sequence parameter set when the packet includes the sequence parameter set, to calculate a horizontal resolution of the video data; determining a video resolution of the video data from the calculated horizontal resolution and the detected vertical resolution; recording the digital stream signal on the data area; and recording the management information that manages the recorded digital stream signal on the management area.