Method of switching from a first encoded video stream to a second encoded video stream
US9226022B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 26, 2008 |
| Grant date | Dec 29, 2015 |
| Priority date | — |
| Expiry date | Aug 10, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/4384
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention relates to a method (300, 310) of switching from a source encoded video stream (134) to a destination encoded video stream (108), and to an apparatus (100), a video platform (210) and a system (200) therefor. The method (300, 310) includes providing an intermediate switching stream (130) which is dependent upon the destination stream (108), the switching stream (130) including a plurality of successive GOP sequences, each GOP sequence including an initial l-frame and at least one successive P-frame. The method (300, 310) further includes switching from the source video stream (134) to the l-frame of a GOP sequence of the switching stream (130) and then switching from the switching stream (130) to the destination stream (108) such that the subsequent frames of the destination stream (108) can be decoded using the accumulated reference of the GOP sequence of the switching stream (130).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.