Rate control method for video transcoding
US7170938B1 · kind B1 · utility
74Cited by
13References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 21, 2001 |
| Grant date | Jan 30, 2007 |
| Priority date | — |
| Expiry date | Aug 24, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/61
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention discloses a system and method for rate control of MPEG video streams to achieve a target bit rate in a transcoder at the best visual quality possible. The invention monitors video buffer fullness for selecting the amount of rate reduction necessary to achieve a target bit rate. The invention also utilizes a method for selective requantization of DCT coefficients to assure visual quality.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.