Method and arrangement for transcoding a video bitstream
US9930351B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 7, 2014 |
| Grant date | Mar 27, 2018 |
| Priority date | — |
| Expiry date | Nov 28, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/70
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a method and a transcoder arrangement of transcoding a bitstream representing an original video source from an input format to an output format. The method comprises the steps of receiving (S10) the bitstream with the input video format, wherein the input video format is a high fidelity format; and receiving (S20) side information related to said video bitstream. Said side information comprising at least: a video bitstream representing the original video source with a low fidelity input video format, coding parameters optimized based on knowledge of the original video source; transform coefficients, indicative of a residual between the original video source and a decoded version of the high fidelity format. The method further comprises decoding (S40) said received side information to generate transcoding guiding information, estimating (S50) a representation of said bitstream with a low fidelity output format based on the received bit stream and the generated transcoding guiding information, adding (S60) the transform coefficients of the side information to transform coefficients generated from the estimated representation of said bitstream with the…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.