Method and system for two-pass video encoding using sliding windows
US7302000B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 21, 2004 |
| Grant date | Nov 27, 2007 |
| Priority date | — |
| Expiry date | Dec 6, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/61
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for two-pass video encoding using sliding windows. The method receives a video sequence (VS), selects a portion of frames in the VS from the beginning as an analysis window, encodes each frame in the analysis window to acquire multiple statistical features, such as a bitrate to each frame in the analysis window, the quantization scale or complexity of the frame, redistributes the bitrate to each frame in the analysis window according to the statistical features, encodes the frames in the analysis window occurring between the beginning and an out point according to the redistributed bitrates, and selects a portion of frames in the VS from the next frame of the out point as a new analysis window if the VS is not completely encoded.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.