METHOD OF VIDEO STREAMING, CORRESPONDING DEVICE AND SYSTEM

摘要

Video is provided in chunks to a player. Some chunks need to be computed because they are targeted to a particular user. Computing of targeted chunks is done by cloud computing instances that pop jobs from associated queues. Targeted chunks may be required sooner or later than initially expected due to the player using trick modes. In order to have targeted chunks delivered to the player at the right time, a play time tracker regularly inserts overloaded chunk requests in the manifest file. The overloaded requests comprise references to future needed targeted chunks as well as expected play out time of these chunks. Overloaded requests are verified and if it is determined that the future needed targeted chunk has not already been computed, a message for verification is transmitted to a scheduler. The scheduler verifies if measures need to be taken to ensure timely delivery of the targeted video chunks.

主权项

1. A method of video streaming to a video player device, wherein the method comprises:
receiving, from said video player device, a request for streaming of a video to said video player device; in response to said request for streaming of a video, transmitting to said video player device a video chunk list comprising resource locators of video chunks for playing the video, said video chunk list comprising a resource locator of a first resource locator type and a resource locator of a second resource locator type, said first resource locator type referring to a single video chunk and said second resource locator type comprising: a first resource locator referring to a first video chunk, a second resource locator referring to a second video chunk and an expected play out delay of said second video chunk; receiving, from said video player device, a request for streaming a video chunk from said video chunk list; if a resource locator comprised in said request for streaming a video chunk is of the first resource locator type, transmitting said single video chunk to said video player device; if said resource locator comprised in said request for streaming a video chunk is of the second resource locator type, transmitting to said video player device said first video chunk, and if said second video chunk is not available, transmitting a request for computing said second video chunk, said request for computing the second video chunk comprising said expected play out delay.