Low-latency HTTP live streaming
US10567461B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 19, 2017 |
| Grant date | Feb 18, 2020 |
| Priority date | — |
| Expiry date | Feb 8, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/6437
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Implementations provide a structure for low-latency live-video streams using existing content delivery networks. An example method includes creating, at the start of a broadcast stream, a playlist for the broadcast stream that identifies at least two segment files. The content of each of the segment files is a table header. The method also includes transmitting the playlist and each of the segment files to a cache server, obtaining the video broadcast stream as a series of frames, and transmitting each frame in the series of frames to the cache server using an HTTP chunk transfer protocol, each frame being associated with, and written to, a first segment file identified in the playlist. When a frame in the broadcast stream is a break frame, the method includes transmitting an end of file marker for the first segment file and adding a video header for the break frame before it is transmitted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.