Method and system for transcoding video data
US7327784B2 · kind B2 · utility
1Cited by
57References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 24, 2003 |
| Grant date | Feb 5, 2008 |
| Priority date | — |
| Expiry date | Jun 5, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/176
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.