Method and system for transcoding based robust streaming of compressed video
US8718135B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 8, 2009 |
| Grant date | May 6, 2014 |
| Priority date | — |
| Expiry date | Dec 8, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/89
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Described herein is a novel transcoding technique called lossless inter frame transcoding (LIFT) for improving the error resilience of video streaming. According to various embodiments, conventional coded blocks are selectively transcoded into new transcoded blocks. At the decoder, the transcoded blocks can be transcoded back to the conventional coded blocks when prediction is available and can also be robustly decoded independently when prediction is unavailable. According to another embodiment, an offline transcoding and online composing technique is provided for generating a composite frame using the transcoded and conventional coded blocks and adjusting the ratio of the transcoded blocks, thereby achieving error robustness scalability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.