CN107493519A - A kind of network quality appraisal procedure and device based on user video experience - Google Patents
A kind of network quality appraisal procedure and device based on user video experience Download PDFInfo
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- CN107493519A CN107493519A CN201610420073.5A CN201610420073A CN107493519A CN 107493519 A CN107493519 A CN 107493519A CN 201610420073 A CN201610420073 A CN 201610420073A CN 107493519 A CN107493519 A CN 107493519A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/647—Control signaling between network components and server or clients; Network processes for video distribution between server and clients, e.g. controlling the quality of the video stream, by dropping packets, protecting content from unauthorised alteration within the network, monitoring of network load, bridging between two different networks, e.g. between IP and wireless
- H04N21/64723—Monitoring of network processes or resources, e.g. monitoring of network load
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/24—Monitoring of processes or resources, e.g. monitoring of server load, available bandwidth, upstream requests
- H04N21/2402—Monitoring of the downstream path of the transmission network, e.g. bandwidth available
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
- H04N21/44209—Monitoring of downstream path of the transmission network originating from a server, e.g. bandwidth variations of a wireless network
Abstract
The invention discloses a kind of network quality appraisal procedure and device based on user video experience, it is related to network technique field, methods described includes：By being detected to video flowing, determine whether user surfs the Net and watch video；In the viewing video it is determined that user is surfing the Net, extraction user watches the code rate information of video；Statistics calculates user's network parameter related to user's viewing video tastes during video is watched in online；According to the code rate information and the network parameter calculated, network quality is assessed.The behavior of video is watched by detecting user, network quality when evaluating and testing customer access network video traffic from the angle of user video experience, is provided safeguard preferably to provide network service.
Description
Technical field
The present invention relates to network technique field, more particularly to a kind of network quality appraisal procedure and device based on user video experience.
Background technology
With the development of Internet technology, network quality turns into one of Important Problems of concern.At present, the live of Internet video, order program service demand are growing, and video stream media business turns into an indispensable business in people's daily life.
To meet the needs of market, the definition also more and more higher, therefore also increasingly increase the demand of network for the video that Video service business releases.In a network, in order to effectively lift Consumer's Experience, it is necessary to take effective network quality evaluation and test and optimization method.
Existing network quality assessment method is mainly counted and calculated to time delay, the network parameter such as retransmission rate and Access Success Rate, obtains network quality parameters, network quality is evaluated and tested by network quality parameters.Although the program can estimate the quality of network on the whole, the Consumer's Experience of live network quality can not be embodied.
The present invention is watched the behavior of video by user, proposes a kind of network quality evaluation scheme based on user video experience from Consumer's Experience angle.
The content of the invention
How the technical problem that the technical scheme that provides according to embodiments of the present invention solves is from the angle of user video experience, and network quality is assessed.
The network quality appraisal procedure based on user video experience provided according to embodiments of the present invention, including：
By being detected to video flowing, determine whether user surfs the Net and watch video；
In the viewing video it is determined that user is surfing the Net, extraction user watches the code rate information of video；
Statistics calculates user's network parameter related to user's viewing video tastes during video is watched in online；
According to the code rate information and the network parameter calculated, network quality is assessed.
Preferably, the user watches the related network parameter of video tastes to user during video is watched in online and includes playing initial buffer time delay, interim card number and interim card recovery latency.
Preferably, the broadcasting initial buffer time delay is counted by following steps calculates：
Obtain user and send the time of video address request as the initial buffer time started；
Playing duration is available for according to paid-in all packets, determines the initial buffer end time；
Using the initial buffer time started and the initial buffer end time, it is determined that playing initial buffer time delay.
Preferably, the interim card number is counted by following steps and calculated：
According to all normal play durations before the time for the packet being currently received, the last interim card, the last interim card end time, it is determined that being actually needed the duration of broadcasting；
According to paid-in all packets be available for playing duration and it is described be actually needed playing duration, determine whether the surfing the Net video of viewing of user occurs interim card；
If it is determined that user is surfing the Net, interim card has occurred for the video of viewing, then by interim card number cumulative 1.
Preferably, the interim card recovery latency is counted by following steps and calculated：
Obtain user surf the Net viewing video when each interim card at the beginning of between and the end time；
According to acquired user surfing the Net viewing video when each interim card at the beginning of between and the end time, obtain the recovery latency of each interim card；
The recovery time of resulting each interim card is added up, obtains interim card recovery latency.
Preferably, described according to the code rate information and the network parameter calculated, the step of assessing network quality, includes:
According to the code rate information and the network parameter calculated, determine that user surfs the Net and watch the network quality evaluation and test value of video；
Duration can play according to the initial video of the code rate information and acquiescence, determine that user surfs the Net and watch the network quality desired value of video；
Using the network quality evaluation and test value and the network quality desired value, assessment user, which surfs the Net, watches the network quality of video.
Preferably, in addition to：
Calculate the network quality evaluation and test value and network quality desired value under different video business；
According to the network quality evaluation and test value and expectation network quality desired value under the different video business calculated, overall network quality is assessed.
The storage medium provided according to embodiments of the present invention, it stores the program for realizing the above-mentioned network quality appraisal procedure based on user video experience.
A kind of network quality apparatus for evaluating based on user video experience provided according to embodiments of the present invention, including：
Detection module, for by being detected to video flowing, determining whether user surfs the Net and watching video；
Extraction module, in the viewing video it is determined that user is surfing the Net, extraction user to watch the code rate information of video；
Statistical module, user's network parameter related to user's viewing video tastes during video is watched in online is calculated for counting；
Evaluation module, for according to the code rate information and the network parameter calculated, assessing network quality.
Preferably, the user watches the related network parameter of video tastes to user during video is watched in online and includes playing initial buffer time delay, interim card number and interim card recovery latency.
Preferably, the evaluation module is according to the code rate information and the network parameter calculated, determine that user surfs the Net and watch the network quality evaluation and test value of video, duration can play according to the initial video of the code rate information and acquiescence, determine that user surfs the Net and watch the network quality desired value of video, and the network quality evaluation and test value and the network quality desired value are utilized, assessment user, which surfs the Net, watches the network quality of video.
Technical scheme provided in an embodiment of the present invention has the advantages that：
The behavior of video is watched by detecting user, from the angle of user video experience, evaluates and tests network quality during customer access network video traffic, is provided safeguard preferably to provide network service.
Brief description of the drawings
Fig. 1 is the network quality appraisal procedure block diagram provided in an embodiment of the present invention based on user video experience；
Fig. 2 is the network quality apparatus for evaluating block diagram provided in an embodiment of the present invention based on user video experience；
Fig. 3 is the deployment diagram of DPI equipment provided in an embodiment of the present invention in a network；
Fig. 4 is the workflow of Fig. 3 DPI equipment；
Fig. 5 is network quality estimation flow figure provided in an embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing to a preferred embodiment of the present invention will be described in detail, it will be appreciated that preferred embodiment described below is merely to illustrate and explain the present invention, and is not intended to limit the present invention.
Fig. 1 is the network quality appraisal procedure block diagram provided in an embodiment of the present invention based on user video experience, as shown in figure 1, step includes：
Step S101：By being detected to video flowing, determine whether user surfs the Net and watch video.
Using deep-packet detection engine, video flowing is detected, and when detecting video flowing, determines that user surfs the Net and watches video.
Step S102：In the viewing video it is determined that user is surfing the Net, extraction user watches the code rate information of video.
Step S101 and step S102 realize the identification of video traffic and the extraction of code rate information, specifically, identify that the behavior of video is currently viewed in user using deep packet inspection technical, and the code rate information of video is extracted.
Step S103：Statistics calculates user's network parameter related to user's viewing video tastes during video is watched in online.
The user watches the related network parameter of video tastes during video is watched in online to user to be included playing initial buffer time delay, interim card number and interim card recovery latency.
Wherein, the broadcasting initial buffer time delay is counted by following steps calculates：Obtain user and send the time of video address request as the initial buffer time started, playing duration is available for according to paid-in all packets, determine the initial buffer end time, then the initial buffer time started and the initial buffer end time are utilized, it is determined that playing initial buffer time delay.
The interim card number is counted by following steps and calculated：According to all normal play durations before the time for the packet being currently received, the last interim card, the last interim card end time, it is determined that it is actually needed the duration of broadcasting, it is available for playing duration according to paid-in all packets and described is actually needed playing duration, determine whether the surfing the Net video of viewing of user occurs interim card, if it is determined that user is surfing the Net, interim card has occurred for the video of viewing, then by interim card number cumulative 1.
The interim card recovery latency is counted by following steps and calculated：Obtain user surf the Net viewing video when each interim card at the beginning of between and the end time, according to acquired user surfing the Net viewing video when each interim card at the beginning of between and the end time, obtain the recovery latency of each interim card, then the recovery time of resulting each interim card is added up, obtains interim card recovery latency.
Step S104：According to the code rate information and the network parameter calculated, network quality is assessed.
Specifically, according to the code rate information and the network parameter calculated, determine that user surfs the Net and watch the network quality evaluation and test value of video, duration can play according to the initial video of the code rate information and acquiescence, determine that user surfs the Net and watch the network quality desired value of video, then the network quality evaluation and test value and the network quality desired value are utilized, assessment user, which surfs the Net, watches the network quality of video.
Step S103 and step S104, which realizes, to be calculated the statistics of the network parameter of current video, so as to assess the network quality under current single video scene.
Pass through the S101 to step S104 that repeats the above steps, calculate the network quality evaluation and test value and network quality desired value under different video business, and according to the network quality evaluation and test value and expectation network quality desired value under the different video business calculated, assess overall network quality.That is, by counting the network quality evaluation and test value under other video traffic scenes and network quality desired value, overall evaluation network quality.
The present invention relates to network technique field, more particularly to a kind of method and technology for watching the behavior progress network quality evaluation and test of video by analyzing user.
One of ordinary skill in the art will appreciate that, it is that by program the hardware of correlation can be instructed to complete to realize all or part of step in above-described embodiment method, described program can be stored in computer read/write memory medium, the program upon execution, including step S101 to step S104.Wherein, described storage medium can be ROM/RAM, magnetic disc, CD etc..
Fig. 2 is the network quality apparatus for evaluating block diagram provided in an embodiment of the present invention based on user video experience, as shown in Fig. 2 including：Detection module 10, extraction module 20, statistical module 30 and evaluation module 40.
Detection module 10, for by being detected to video flowing, determining whether user surfs the Net and watching video.Specifically, detection module 10 utilizes deep-packet detection engine, and video flowing is detected, and when detecting video flowing, determines that user surfs the Net and watch video.
Extraction module 20, in the viewing video it is determined that user is surfing the Net, extraction user to watch the code rate information of video.Specifically, extraction module 20 extracts the code rate information of the video when detection module 10 identifies video traffic.
Statistical module 30, user's network parameter related to user's viewing video tastes during video is watched in online is calculated for counting, the network parameter includes playing initial buffer time delay, interim card number and interim card recovery latency.Statistical module 30 can carry out statistics calculating according to the step S103 of Fig. 1 embodiments to above-mentioned network parameter.
Evaluation module 40, for according to the code rate information and the network parameter calculated, assessing network quality.Specifically, evaluation module 40 is according to the code rate information and the network parameter calculated, determine that user surfs the Net and watch the network quality evaluation and test value of video, duration can play according to the initial video of the code rate information and acquiescence, determine that user surfs the Net and watch the network quality desired value of video, and the network quality evaluation and test value and the network quality desired value are utilized, assessment user, which surfs the Net, watches the network quality of video.
The present embodiment research user watches the network behavior of video, and by video parameter (including code rate information and network parameter), network quality is evaluated and tested from user video experience angle.
Fig. 3 is the deployment diagram of deep-packet detection provided in an embodiment of the present invention (Deep Packet Inspection, DPI) equipment (i.e. DPI operation systems) in a network, as shown in figure 3, the present invention is mainly used in DPI equipment.DPI technologies are a kind of protocol identification technologies occurred in recent years, and DPI technologies add the analysis to application layer on the basis of packet header is analyzed, and are a kind of flow detections and control technology based on application layer.As Internet protocol (Internet Protocol, IP) packet, transmission control protocol (Transmission Control Protocol, ) or UDP (User Datagram Protocol TCP, UDP when) data flow passes through the network equipment (i.e. the DPI operation systems) based on DPI technologies, DPI engines are by the content of deep reading IP payload packages come to open system interconnection (Open System Interconnection, OSI) application layer message in 7 layer protocols is analyzed, so as to identify the application layer protocol of IP bags.Position that DPI equipment is applied in a network is as shown in figure 3, between user terminal and network, specifically, between gateway and network.
Fig. 4 is the workflow of Fig. 3 DPI equipment, as shown in figure 4, step includes：
Step S201：To Internet video Activity recognition.
Identify that the behavior of video is currently viewed in user using DPI technologies.
Step S202：The video parameter of current video, including code rate information and network parameter are obtained, network parameter includes playing initial buffer time delay, interim card number and interim card recovery latency.
(1) video code rate (i.e. code rate information), the data bits of unit interval transmission, when identifying that the behavior of video is currently viewed in user, extracts the code rate information of the video during data transfer.
(2) initial buffer time delay is played：
A. time started (i.e. the initial buffer time started)
User clicks on and commenced play out, and the DNS times for the video address request that client is sent are the time started, if not having the DNS times, the GET request time is the time started.
B. end time (i.e. the initial buffer end time)
Often receive a TCP downlink data packet, calculate the duration that all data volumes being currently received are available for playing, judge whether to be more than or equal to the duration (acquiescence 10s playing duration) that initial video can play, when the condition that meets then thinks that video terminates initial buffer, the time that record receives current TCP downlink data packets is the end time.
End time and the difference of time started, as play initial buffer time delay.
(3) interim card number and interim card recovery latency：
A. there is the time of interim card
If the satiable playing duration of content that client player is downloaded, which is less than, is actually needed the duration of broadcasting, illustrate that interim card has occurred for the surfing the Net video of viewing of user, interim card number is now added up 1.
All Normal Play Times+current message downloading slicing time (time for receiving current data packet)-the last interim card terminates to start Normal Play Time (i.e. the last interim card end time) before being actually needed duration=the last interim card of broadcasting.Wherein, there is no interim card preceding, then it is initial buffering time end point that the last interim card, which terminates to start Normal Play Time, if no interim card.
Recording the current interim card time started is：Last interim card terminates beginning Normal Play Time+last interim card and starts to download content size/average bit rate to current message.Wherein, it is the last interim card end time that last interim card, which terminates to start Normal Play Time, if being initial buffering time end point if preceding no interim card.
B. the interim card end time
When the playable duration of the content when time interim card, accumulated in buffering area is more than or equal to secondary buffer recovery thresholding (the broadcasting content for being defaulted as 5s), the interim card end time is recorded as.
According between at the beginning of each interim card and the end time, the recovery latency of each interim card is obtained, the recovery time of each interim card is added up, obtains interim card recovery latency.
Step S203：Analyze the correlation of network quality and video parameter.
In the timing of video code rate one, found by data analysis, play negatively correlated property between initial buffer time delay and network quality, be i.e. broadcasting initial buffer time delay is higher, and network quality is poorer.Interim card number and interim card recovery latency are similar with playing initial buffer time delay, i.e., have negative correlation between interim card number and interim card recovery latency and network quality.
In the timing of network quality one, there is positive correlation in video code rate, i.e. code check is higher with playing initial buffer time delay, interim card number and interim card recovery latency, plays initial buffer time delay and interim card recovery latency is higher, interim card number is more.Video code rate is higher to require higher to network quality.
Step S204：Summary correlation analysis, establish quality assessment model.
According in step S203 to the correlation analysis between relevant parameter and network quality, network quality is represented using vF values (i.e. network quality evaluation and test value), vF values are bigger to represent that network quality is poorer, vF values are smaller to represent that network quality is better, and influence of the video code rate to network quality is eliminated, the model for establishing network quality evaluation and test is as follows：
Wherein, vLoadingTime represents to play initial buffer time delay；VStallingNums represents interim card number；VStallingTime represents interim card recovery latency；ω=(ω0, ω1, ω2)TFor the coefficient matrix of network parameter, i.e. ω0, ω1, ω2Respectively play the coefficient of initial buffer time delay, interim card number and interim card recovery latency；VVideoRate is video code rate.
The expectation network quality (i.e. network quality desired value) for providing an estimation is as follows：
VFExpectation=(vDefaultTime* ω0)/vVideoRate
Wherein, vDefaultTime is that the initial video of acquiescence can play duration.Represent that network quality is poor when vF values are more than vFExpectation, represent that network quality is good during less than vFExpectation, illustrate that video playback is smooth, the enough video playbacks of bandwidth.
Step S205：Repeat step S201 to step S204, count the network quality (i.e. network quality evaluation and test value) and desired network quality (i.e. network quality desired value) under different video scene, eliminate the influence of different video service server, overall evaluation network quality.
Assuming that N number of different video scene be present, the formula of whole synthesis calculating network quality is as follows：
Wherein, anTo count the flow accounting of each video traffic in existing network according to DPI recognition result.vFtotalIt is of poor quality more than 1 explanation overall network, it is good less than 1 explanation overall network quality.
Fig. 5 is network quality estimation flow figure provided in an embodiment of the present invention, as shown in figure 5, the present embodiment establishes process with what user watched photopic vision frequency parameter acquiring and quality assessment model for youku.com video, step is as follows：
Step S301：Data traffic is diverted to DPI equipment.
Step S302：DPI identifies whether it is video traffic, if so, then performing step S303, otherwise terminates network quality estimation flow.
Step S303：Extract the code check of video and obtain the network parameter of video.
1st, assume that youku.com's video traffic is currently viewed in user, the identification of youku.com's video traffic is now carried out by step S302, and the extraction of video code rate is carried out by step S303.That is, identifying that the behavior of youku.com's video traffic is currently viewed in user using DPI technologies, and the code rate information for watching video is extracted.
2nd, statistics calculates the network parameter of currently viewing youku.com's video.
(1) initial buffer time delay is played：
A. the time started：User clicks on and commenced play out, the DNS times for the video address request that client is sent (as being the GET request time without if).
B. the end time：Often receive a TCP downlink data packet, calculate the duration that all data volumes being currently received are available for playing, judge whether to be more than or equal to the duration (acquiescence 10s playing duration) that initial video can play, when the condition that meets then thinks that video terminates initial buffer, the time for recording current TCP downlink data packets is the end time.
Play initial buffer time delay=end time-time started
(2) interim card number and interim card recovery latency：
A. there is the time of interim card：The satiable playing duration of content that client player is downloaded, if less than the duration for being actually needed broadcasting (m- the last interim card terminates to start Normal Play Time (being initial buffering time end point if no interim card) during all Normal Play Times+current message downloading slicing before the last interim card), interim card number+1, and record the current interim card time started and be：Last interim card (being initial buffering time end point if no interim card) terminates beginning Normal Play Time+last interim card and starts to download content size/average bit rate to current message.
B. the interim card end time：It is more than or equal to secondary buffer since the playable duration of the content when time interim card, accumulated in buffering area and recovers thresholding (the broadcasting content for being defaulted as 5s), then is recorded as the interim card end time.
There is the time of interim card in interim card recovery latency=interim card end time-, and each interim card recovery latency is added up, and obtains total interim card recovery latency of the currently viewing youku.com's video traffic of user.
Interim card number=interim card number+1, i.e. interim card number cumulative 1.
Step S304：Carry out video parameter and network quality correlation analysis.
Step S305：The quality assessment model of currently viewing youku.com's video is established, that is, establishes network quality assessment models, with reference to desired network quality, assesses network quality.
Wherein, vLoadingTime represents to play initial buffer time delay；VStallingNums represents interim card number；VStallingTime represents interim card recovery latency；ω=(ω0, ω1, ω2)TFor the coefficient matrix of network parameter, i.e. ω0, ω1, ω2Respectively play the coefficient of initial buffer time delay, interim card number and interim card recovery latency；VVideoRate is video code rate.
The expectation network quality (i.e. network quality desired value) for providing an estimation is as follows：
VFExpectation=(vDefaultTime* ω0)/vVideoRate
Network quality when vF values are more than vFExpectation during expression active user viewing youku.com's video is poor, interim card easily occurs；VF values represent that network quality is excellent when being less than vFExpectation, and viewing video is more smooth, meet the needs of watching video.
Step S306：The present embodiment can also watch more video traffics with multi-user, to illustrate the process of overall network quality evaluation, comprise the following steps that.
Step S3061：Repeat step S301 to step S305 process, statistics multi-user watch the network quality of more video traffics and desired network quality.
Step S3062：Watch the flow of video traffic every time by DPI stroke analysises.
Step S3063：Comprehensive all network qualities and desired network quality, eliminate the influence of different user network discrepancy and different video service server, overall evaluation network quality.
Assuming that N number of different video scene be present, the formula of whole synthesis calculating network quality is as follows：
Wherein, anTo count the flow accounting of each video traffic in existing network according to DPI recognition result.vFtotalIt is of poor quality more than 1 explanation overall network, it is good less than 1 explanation overall network quality.
In summary, embodiments of the invention have following technique effect：
The embodiment of the present invention can be evaluated and tested when watching Internet video to network quality, and from Consumer's Experience angle, the behavior of video is watched by user, network quality is evaluated and tested, preferably provides network service.
Although the present invention is described in detail above, the invention is not restricted to this, those skilled in the art of the present technique can carry out various modifications according to the principle of the present invention.Therefore, all modifications made according to the principle of the invention, all should be understood to fall into protection scope of the present invention.
Claims (10)
1. a kind of network quality appraisal procedure based on user video experience, including：
By being detected to video flowing, determine whether user surfs the Net and watch video；
In the viewing video it is determined that user is surfing the Net, extraction user watches the code check letter of video
Breath；
It is related to user's viewing video tastes during video is watched in online that statistics calculates user
Network parameter；
According to the code rate information and the network parameter calculated, network matter is assessed
Amount.
2. according to the method for claim 1, the user is during video is watched in online
Watching the related network parameter of video tastes to user includes playing initial buffer time delay, interim card time
Number and interim card recovery latency.
3. according to the method for claim 2, it is described broadcasting initial buffer time delay by with
Lower step statistics calculates：
Obtain user and send the time of video address request as the initial buffer time started；
Playing duration is available for according to paid-in all packets, at the end of determining initial buffer
Between；
Using the initial buffer time started and the initial buffer end time, it is determined that playing
Initial buffer time delay.
4. according to the method for claim 2, the interim card number is united by following steps
Meter calculates：
Normally broadcast according to all before the time for the packet being currently received, the last interim card
Duration, the last interim card end time are put, it is determined that being actually needed the duration of broadcasting；
It is available for playing duration according to paid-in all packets and described is actually needed broadcasting
Duration, determines whether the surfing the Net video of viewing of user occurs interim card；
If it is determined that user is surfing the Net, interim card has occurred for the video of viewing, then interim card number adds up
1。
5. according to the method for claim 2, the interim card recovery latency passes through following step
Rapid statistics calculates：
Obtain user surf the Net viewing video when each interim card at the beginning of between and the end time；
According to acquired user surfing the Net viewing video when each interim card at the beginning of between and
End time, obtain the recovery latency of each interim card；
The recovery time of resulting each interim card is added up, obtains interim card recovery latency.
It is 6. described according to the code check according to the method described in claim 3-5 any one
Information and the network parameter calculated, assess network quality the step of include:
According to the code rate information and the network parameter calculated, determine user
The network quality evaluation and test value of online viewing video；
Duration can play according to the initial video of the code rate information and acquiescence, determine user
The network quality desired value of online viewing video；
Using the network quality evaluation and test value and the network quality desired value, user is being assessed
The network quality of online viewing video.
7. the method according to claim 11, in addition to：
Calculate the network quality evaluation and test value and network quality desired value under different video business；
According to the network quality evaluation and test value under the different video business calculated and it is expected net
Network quality desired value, assess overall network quality.
8. a kind of network quality apparatus for evaluating based on user video experience, including：
Detection module, for by being detected to video flowing, determining whether user is surfing the Net
Watch video；
Extraction module, in the viewing video it is determined that user is surfing the Net, extraction user to watch
The code rate information of video；
Statistical module, regarded for counting calculating user during video is watched in online with user's viewing
Frequency experiences related network parameter；
Evaluation module, for being joined according to the code rate information and the network calculated
Number, assess network quality.
9. device according to claim 8, the user is during video is watched in online
Watching the related network parameter of video tastes to user includes playing initial buffer time delay, interim card time
Number and interim card recovery latency.
10. device according to claim 8 or claim 9, the evaluation module is according to the code
Rate information and the network parameter calculated, determine that user surfs the Net and watch video
Network quality evaluation and test value, duration can play according to the initial video of the code rate information and acquiescence,
Determine that user surfs the Net and watch the network quality desired value of video, and utilize the network quality
Evaluation and test value and the network quality desired value, assessment user, which surfs the Net, watches the network matter of video
Amount.
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