Patent Number: 7,133,452

Title: Method and system for transcoding video data

Abstract: A first method of transcoding video data is disclosed that generates a motion vector for a macroblock encoded as a dual prime macro block that has a direct motion vector, and differential motion vector for its two fields respectively. Another method of transcoding includes replacing a skipped P-macroblock that has been used to backward predict a B-Frame with a P-macroblock having a motion vector of zero. Another method of transcoding includes replacing a skipped B-Macroblock with a macroblock having a motion vector from a macroblock of the same frame of the skipped B-Macroblock that is not co-located.

Inventors: Rault; Patrick (Toronto, CA)

Assignee: ViXS Systems, Inc.

International Classification: H04B 1/66 (20060101)

Expiration Date: 2019-11-07 0:00:00