Patent ID: 7729358

Claim:
A transcoding apparatus transcoding a first video stream into a second video stream, comprising: a separator to extract a video transport stream packet including the first video stream, a non-video transport stream packet, and timing information from a first transport stream, the timing information indicating a time at which the non-video transport stream packet is formed in the first transport stream relative to the video transport stream packet; a memory to store the timing information; a conversion unit to generate the second video stream based on the first video stream; and a multiplexer to multiplex a converted video transport stream packet including the second video stream and a converted non-video transport stream packet based on the stored timing information to generate a second transport stream, including the second video stream, wherein the conversion unit is provided with a presentation time stamp of an encoded video signal, the presentation time stamp being necessary for reproduction of the encoded video signal and independent of timing relative to packet positioning in the second transport stream.