Live video transmission control method and system based on PID control

A transmission control and live video technology, applied in the field of video transmission, can solve the problems affecting the TCP protocol data transmission throughput, fluctuations in network conditions, and unsmooth video playback at the receiving end.

Active Publication Date: 2017-09-12
PEKING UNIV +2
View PDF5 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, although the network environment has been continuously improved, fluctuations in network conditions still occur frequently, and fluctuations in network conditions will directly affect the throughput of data transmission by the TCP protocol
Am

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Live video transmission control method and system based on PID control
  • Live video transmission control method and system based on PID control
  • Live video transmission control method and system based on PID control

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0051] In order to be able to understand the above objectives, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the application and the features in the embodiments can be combined with each other if there is no conflict.

[0052] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described here. Therefore, the protection scope of the present invention is not limited to the specific details disclosed below. Limitations of the embodiment.

[0053] figure 1 It shows a schematic flowchart of a method for controlling a live video transmission based on PID control according to an embodiment of the present invention.

[0054] Such as figure 1 As ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention a live video transmission control method and system based on PID control. The live video transmission control method based on PID control comprises the following steps of according to a preset detecting cycle, detecting real-time bit rate of the system and real-time length of a video transmission buffer zone, wherein the real-time length of the video transmission buffer zone represents the number of buffered video frames; calculating the difference value between the real-time length and a target value of the length of the video transmission buffer zone; bringing the difference value into a PID control formula and performing calculation so as to obtain a bit rate adjustment value which is required at the current moment; and according to the bit rate adjustment value, adjusting the real-time bit rate. Through the adoption of the technical scheme of the control method disclosed by the invention, the real-time bit rate can be corrected, so that the data volume of the video transmission buffer zone is maintained to be an ideal state, so that self-adaption of video quality along with the network condition is realized; and the fluent degree of live video is increased, and network bandwidth is sufficiently used as possible, so that high video quality can be achieved.

Description

Technical field [0001] The present invention relates to the technical field of video transmission, in particular to a method for controlling a live video transmission based on PID control and a control system for a live video transmission based on PID control. Background technique [0002] With the popularization of broadband and the development of network technology, multimedia services on the Internet have gradually become the mainstream. The previous generation of video applications were mainly based on video-on-demand services. With the gradual improvement of network conditions and the continuous development of video technology, people’s demand for live video is increasing, and applications based on live video services have also begun to emerge rapidly, such as Live TV programs, video conferences, video calls, etc. Among them, the latest live broadcast application allows users to create live content through mobile devices. [0003] In order to ensure the real-time performance...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H04L29/06H04N21/2187H04N21/231H04N21/24H04N21/262H04N21/2662
CPCH04N21/2187H04N21/231H04N21/2402H04N21/26216H04N21/2662H04L65/75
Inventor 王杰西孟胜彬孙俊郭宗明
Owner PEKING UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap