Patent ID: 7839927

Claim:
A method for motion graphics keying in the compressed domain, the method comprising: receiving a compressed video stream comprising one or more source macroblocks; receiving a keyed graphics stream comprising uncompressed digital video delivered over a Serial Digital Interface transport; determining one or more overlapping macroblocks of said one or more source macroblocks that overlap with said keyed graphics stream; decoding only said one or more overlapping macroblocks to create one or more decoded macroblocks; combining said keyed graphics stream with said one or more decoded macroblocks to create a composited video stream; encoding said composited video stream to create an encoded composited video stream; restoring said encoded composited video stream in said compressed video stream in place of said one or more overlapping macroblocks; extracting audio embedded in said keyed graphics stream; and multiplexing said audio with the compressed video stream.