Technique to enable efficient adaptive streaming and transcoding of video and other signals
US8761243B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 2009 |
| Grant date | Jun 24, 2014 |
| Priority date | — |
| Expiry date | Apr 11, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/658
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method is described for efficiently determining total end-to-end distortion of a pre-compressed data stream, such as video streams or other media streams, at the time of delivery over a lossy-network, and for providing adaptive error-resilient delivery schemes based on distortion estimates. The methods can be utilized with single or multilayer packet streams and are particularly well suited for video streams. By way of example, distortion estimates are performed by generating side-information at the time of data stream compression, wherein the side-information is used in conjunction with information about the network status to determine an estimated distortion for the group of packets when the data stream is transported over the network to a destination end. This estimation may be utilized within described resiliency techniques in which the error correction mechanism is selected in response to the estimated distortion, which may be additionally refined in reference to cost factors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.