Methods and apparatus for synchronizing transcoded and/or transrated RTP packets
US11212333B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 25, 2015 |
| Grant date | Dec 28, 2021 |
| Priority date | — |
| Expiry date | Jun 7, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L67/14
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Methods and apparatus for synchronizing packet streams and in particular to the synchronization of transcoded and/or transrated Real-time Transport Protocol (RTP) packet streams, e.g., transcoded and/or transrated RTP packet streams carrying audio and/or video data. In one embodiment, a packet processing device receives packets of a first RTP packet stream and a first RTCP packet stream and generates a second RTP packet stream from the first RTP packet stream and generates a second RTCP packet stream from the first RTCP packet stream. The second RTP packet stream including packets with timestamps different than packets of the first RTP packet stream. The second RTCP packet stream including NTP timestamps received in or based on the NTP timestamps of the first RTCP packet stream and associated with RTP timestamps corresponding to content in the second RTP packet stream which was generated by transrating or trancoding content in the first RTP packet stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.