Method and system for transcoding video data
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United States of America Patent
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Feb 5, 2008
Grant Date -
Sep 16, 2004
app pub date -
Feb 24, 2003
filing date -
Feb 24, 2003
priority date (Note) -
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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.
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