A detection and evaluation system and method for ip network video quality

A technology of video quality and network quality, applied in television, electrical components, image communication, etc., can solve the problem that packet loss at the IP layer and network layer cannot fully reflect the real situation of the multimedia network

Inactive Publication Date: 2011-12-21
中国电信股份有限公司上海信息网络部
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

In the process of end-to-end quality monitoring, only packet loss and jitter collection at the IP laye

Method used

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  • A detection and evaluation system and method for ip network video quality
  • A detection and evaluation system and method for ip network video quality
  • A detection and evaluation system and method for ip network video quality

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Embodiment 1

[0030] Acquisition and analysis of the target video can be carried out by various methods, such as obtaining the code stream by splitting video or mirroring video to avoid impact on the business, and then obtaining the target decoded video by decoding. The monitoring point can select several links or the whole link to monitor according to the monitoring requirements of the link.

[0031] According to the above ideas, this embodiment provides a detection and evaluation system for IP network video quality, such as figure 1 and 2 As shown, it includes at least one video source acquisition module 1, a video quality measurement probe 2 connected to all video source acquisition modules 1, a video network quality assessment server 3 connected to the video quality detection head 2 in communication; the video source acquisition Module 1 is used to obtain real-time video source through switch port mirroring mode; Described video quality measurement probe 2 is made up of network quality...

Embodiment 2

[0037] The present embodiment also provides a method for detecting and evaluating IP network video quality, comprising the following steps:

[0038] Step 1, the video source acquisition module obtains the real-time video source through the mirroring mode of the switch port.

[0039]Step 2, the video quality measuring probe is made up of network quality testing agent software, measures the data of network transport layer, code stream layer respectively, obtains the parameter that influences video communication quality; The parameter that described influence video communication quality includes code stream layer network media loss Packet rate, code stream delay difference ratio, code stream layer image resolution, bandwidth, video compression ratio; wherein said code stream layer network media packet loss rate is divided by the packet loss number of media slices in each TS packet The number should be obtained; the code stream delay is defined as DF, which is obtained by measurin...

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Abstract

The invention discloses a IP network video quality detecting and evaluating system and method. The system comprises at least one video source collecting module, a video quality measuring probe and a video network quality evaluating server, wherein the video quality measuring probe is connected with all video source collecting modules via communication; the video network quality evaluating server is connected with the video quality measuring probe via communication; the video source collecting module is used for obtaining a real-time video source through exchanger port mirror image mode; the video quality measuring probe is formed by network quality testing agent software and used for respectively measuring data of a network transmission layer and a code stream layer so as to obtain parameters affecting the video communication quality; and the video network quality evaluating server is used for periodically giving an evaluation report of the network quality according to the parameters and carrying out assistant positioning on the fault affecting the network quality. According to the invention, the evaluation report of the network quality can be periodically obtained according to the corresponding relation between the collected data and the video quality; meanwhile, the assistant positioning can be carried out on the fault affecting the network quality.

Description

technical field [0001] The invention belongs to the technical field of multimedia network communication, and relates to an IP network video quality detection and evaluation system and method. Background technique [0002] In recent years, value-added services based on broadband network have emerged in an endless stream. Video network service is one of the value-added services based on broadband network. business form. This new form of network value-added service has the characteristics of large traffic, wide distribution, and sensitivity to network quality. [0003] With the gradual increase of the video business volume, the means of monitoring its quality are also ready to come out. In order not to affect the normal development of the original multimedia network services and ensure the continuity of services, the monitoring means must not affect the original network, and it is required to be able to quickly locate faults, issue fault alarms, and even predict the possibili...

Claims

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Application Information

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IPC IPC(8): H04N17/00
Inventor 叶姣姣廖文昭
Owner 中国电信股份有限公司上海信息网络部
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