Splicing of video data in progressively refreshed video streams

Details Splicing of video data in progressively refreshed video streams Splicing of video data in progressively refreshed video streams

H - Electricity

04

N

H04N 5/262 (2006.01) H04N 7/26 (2006.01) H04N 7/50 (2006.01) H04N 7/24 (2006.01)

Patent

CA 2286448

A method is provided for replacing compressed video from a first source with video from a second source at a predefined insertion point in a video data stream. If the video from the second source is progressively refreshed video, it is decompressed sufficiently prior to the insertion point to enable the recovery and recompression of a first video frame (in encoding order) from the second source to be inserted at the insertion point. The recovered first video frame is then recompressed as an intra-coded (I) frame. The insertion of the video from the second source is then commenced at the insertion point using the I frame. The insertion point can, for example, indicate the commencement of a commercial break in the video stream, in which case the second source provides a commercial for insertion into the commercial break. Where the commercial is stored in memory, it can be stored with the first frame thereof (in encoding order) as an I frame.

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