Patent ID: 6678332
Filing Date: 2004-01-13
Classification: H04N

Abstract:
A method of seamless splicing of a first transport stream to a second transport stream to produce a spliced transport stream, the first transport stream including video access units encoding video presentation units representing video frames and audio access units encoding audio presentation units representing segments of a first audio signal, the second transport stream including video access units encoding video presentation units representing video frames and audio access units encoding audio presentation units representing segments of a second audio signal, the first transport stream having a last video frame to be included in the spliced transport stream, and the second transport stream having a first video frame to be included in the spliced transport stream, said method comprising:(a) finding, in the first transport stream, an audio access unit that is best aligned with the last video frame from the first transport stream to be included in the spliced transport stream, and removing audio access units from the first transport stream that are subsequent to the audio access unit that is best aligned with the last video frame from the first transport stream; (b) finding, in the second transport stream, an audio access unit that is best aligned with the first video frame from the second transport stream to be included in the spliced transport stream; and removing audio access units from the second transport stream that are prior to the audio access unit that is best aligned with the first video frame from the second transport stream; and (c) concatenating a portion of the first transport stream up to and including the last video frame to a portion of the second transport stream including and subsequent to the first video frame.