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Video transmission method, device and system

A video transmission and video request technology, applied in the field of communication, can solve problems such as large bandwidth fluctuations and unsmooth playback

Active Publication Date: 2018-07-03
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, for mobile networks, the bandwidth available to users fluctuates greatly. With the existing 3GP-DASH video transmission technology, the HTTP server provides several fixed bitrates to the user client. Even if the user selects the minimum bitrate, the media stream still appears to be played. no fluency problem

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  • Video transmission method, device and system
  • Video transmission method, device and system
  • Video transmission method, device and system

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Embodiment Construction

[0100] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments . Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0101] In the prior art, the DASH video transmission scheme generates a segment with a fixed bit rate and an MPD corresponding to the segment for the source media stream according to several fixed bit rates specified by the video provider during video transmission, and the MPD contains the specified Several fixed bit rates for clients to choose from. However, for live video services, users are very mobile, and the number of users varies gr...

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Abstract

The present invention provides a video transmission method, device, and system. The method includes: a server receives video request information sent by a user equipment UE, where the video request information includes a UE identifier; the server acquires first load information of the network where the UE is located according to the UE identifier; the server Generate a first media segment segment with a first code rate and a first media presentation description file MPD corresponding to the first segment, where the first code rate matches the first load information; the server sends the first MPD to the UE, so that The UE obtains the first code rate according to the first MPD; the server receives the segment request information sent by the UE, the segment request information includes the first code rate, and sends the first segment to the UE according to the first code rate. In the present invention, the server prepares the media according to the real-time load information of the network where the user is located, and realizes a high degree of matching between the media flow and the real-time network load information of the user.

Description

technical field [0001] The present invention relates to communication technology, in particular to a video transmission method, device and system. Background technique [0002] 3GP-DASH (3GP-Dynamic Adaptive Streaming over HTTP) is a protocol proposed by The 3rd Generation Partnership Project (3GPP for short) to enable streaming media to play smoothly when the bandwidth fluctuates greatly. figure 1 is a schematic diagram of the 3GP-DASH system architecture, such as figure 1 As shown, the 3GP-DASH system includes: a 3GP-DASH HTTP server and a 3GP-DASH client, or also includes an HTTP cache unit. Wherein, the HTTP server includes a 3GP-DASH content preparation module, a 3GP-DASH media presentation description (Media Presentation Description, MPD for short) file distribution function module, and a 3GP-DASH media segment (Segment) distribution function module. [0003] In the prior art, when live video services (Live Service), the 3GP-DASH content preparation module of the Hyp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/238H04N21/234H04N21/845H04L29/06
CPCH04N21/23439H04N21/2402H04N21/26258H04N21/42684H04N21/643H04N21/6581H04N21/8456H04L43/0876
Inventor 史嫄嫄夏海涛乔伟华
Owner HUAWEI TECH CO LTD
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