Video scene change detection and encoding complexity reduction in a video encoder system having multiple processing devices
US8737475B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 2, 2009 |
| Grant date | May 27, 2014 |
| Priority date | — |
| Expiry date | Apr 26, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/61
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of encoding a video frame is disclosed in which video slices of the video frame are initially encoded in parallel using both interframe encoding and intraframe encoding. Then, after a first predetermined minimum amount of the video frame has been encoded, the method includes periodically determining whether the amount of intraframe encoded information for the frame achieves a first threshold, and when the first threshold is achieved, encoding the remainder of the video frame using only intraframe encoding. The method may include determining whether a lower second threshold is achieved based on relative complexity of the frame and quantization. The method may include performing similar comparisons on a slice by slice basis in which any one or more of the processing devices skips motion estimation and interframe encoding for corresponding video slices. A video encoder is disclosed which includes multiple processing devices and a shared memory.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.