CN103402077A - Video and audio transmission strategy method for dynamic adjusting of code stream rate in IP (internet protocol) network of public network - Google Patents
Video and audio transmission strategy method for dynamic adjusting of code stream rate in IP (internet protocol) network of public network Download PDFInfo
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Abstract
The invention provides a video and audio transmission strategy method for dynamic adjusting of code stream rate in an IP (internet protocol) network of a public network, which is applied to front-end accessing camera equipment, back-end storage and display equipment and a related internal network. The method is realized by front-end accessing equipment, back-end storage and display equipment, a strategy, a strategy module for converting the dynamic code stream and network detection, wherein the strategy is used for carrying out dynamic detection and adjusting on the code stream rate in the transmission process, the front-end accessing part is used for uploading a digital signal, which is obtained by collecting and converting a simulated video and audio signal, via an accessing assembly, the back-end storage and display part is used for receiving the video and audio signal transmitted from a network, and storing and displaying the digital signal on the storage and display equipment, the strategy module for converting the dynamic code stream rate is used for dynamically adjusting different code stream rates according to different network information, and the network detection is a network detection method applied into the transmission process. The method has the advantages that the dynamic adjusting of the code stream rate in the video transmission network is realized, and the stable and smooth transmission is effectively ensured under the premise of ensuring the shortage bandwidth resource condition.
Description
Technical field
The present invention relates to security protection video surveillance applications field, particularly relate to a kind of dynamically adjust stream rate in public network IP network video and audio transmission policy method, improve real-time and the fluency of video playback.
Background technology
In the live application of real network, because the visitor place network environment that is positioned at the heterogeneous networks position there are differences, to transmit the image quality that tends to cause user that network speed is higher to see still clear not and only with certain fixed code stream resolution, carry out the network direct broadcasting Streaming Media, user's decode time that network speed is lower is long and make picture smooth not, for the contradiction that solves the two makes visitor views, to seeing as far as possible, takes into account clear and smooth live content.
Video monitoring will be taken into account image quality at present, transmission speed, and the requirement of the aspects such as real-time, therefore will reasonably distribute bandwidth resources under the prerequisite that meets stable smoothness, become a kind of solution of transmission of video.By in cataloged procedure, producing simultaneously the stream medium data of multiple different code streams and resolution, according to user's real network bandwidth condition, automatically distribute for it the solution of relatively best decoding image quality.
Summary of the invention
Technical problem to be solved by this invention is to guarantee maximum effectively to guarantee the stable smoothness of video and audio transmission in the bandwidth resources situation that is tightening;
For achieving the above object, the invention provides a kind of video and audio transmission policy method of netting interior dynamic adjustment stream rate,
Video/audio is uploaded code stream after under headend equipment, encoding again, to stop at occupied bandwidth transmission on network complicated and changeable, by using detection method, automatically adjust stream rate to save bandwidth after network change being detected, guarantee to a certain extent the continual and steady of transmission.When network is normal, with normal stream rate, upload; Congested when the network generation, automatically adjust resolution/frame per second, and then reduce the code stream occupied bandwidth; When network recovery, more automatically recover original speed;
Video/audio is uploaded code stream after under headend equipment, encoding again, to stop at occupied bandwidth transmission on network complicated and changeable, by using detection method, automatically adjust stream rate to save bandwidth after network change being detected, guarantee to a certain extent the continual and steady of transmission.When network is normal, with normal stream rate, upload; Congested when the network generation, automatically adjust resolution/frame per second, and then reduce the code stream occupied bandwidth; When network recovery, more automatically recover original speed;
This strategy process comprises 3 major parts, is respectively fore-end, rear end part, policy module part, wherein,
The front end access section is divided and is comprised: programmable video front A/D conversion equipment and access coupling assembling, for the video/audio signal collection that will simulate the digital signal of changing gained, by the access assembly, upload;
Storage display part, rear end comprises display device and accesses coupling assembling that access connects for receiving the video/audio signal that Internet Transmission is come, and does the storage demonstration with the storage display device;
Policy module, refer to obtain policy library through the information to front and back end, and adopt dynamically hand over word flow rate of strategic decision-making according to different network information, and this policy service module rides on hosted service;
It is comprised of policy library and policy service module, and the external policy executive's interface externally is provided,
Described external policy executive's interface part, for: unified external service strategy execution interface externally is provided, utilizes this interface to obtain the service strategy of external network; Wherein, this module interface is deployed in respectively in front end, rear end and policy service module, is responsible for inline 3 sides and carries out transfer of data
Described policy module part,
Its minute several parts, be respectively:
Front and back end information module, the resource information that reports be used to collecting front and back end;
The analysis of strategies decision-making module, generate the global service strategy be used to the service strategy of utilizing resource information and external network, and deposit in the local policy storehouse;
Strategy distributes Executive Module, for the global service strategy dispenser by generating, is deployed to the front-end and back-end of institute's management and control in net;
The local policy storehouse, be used to the global service strategy in netting and the dynamic change situation of front and back end resource information;
Described dynamic instrumentation service, adopt Detection Techniques, for: the variation of real-time detection equipment; Adopt real-time detection technology encapsulation probe data packet.
As can be seen from the above scheme, the invention provides a kind of video and audio transmission policy method of netting interior dynamic adjustment stream rate, can improve real-time and the fluency of video playback.
The accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below will the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is that in the embodiment of the present invention one, system forms schematic diagram;
Fig. 2 is data transmission and processing schematic flow sheet in the embodiment of the present invention one;
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, the present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.Obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills, not making under the creative work prerequisite the every other embodiment that obtains, belong to the scope of protection of the invention.
Embodiment mono-, referring to Fig. 1,
The invention provides and be applied to front end access picture pick-up device, on rear end storage display device and its associated internal network, realization comprises the front end access device, rear end storage display device, and in transmitting procedure, carry out dynamic detection and adjust the stream rate strategy, for the reply of the network information according to different, with different stream rates, dynamically adjust;
Said system interactive structure schematic diagram, referring to Fig. 1, specifically comprises following interactive portion:
In figure, 1 part represents: fore-end, comprise programmable video front A/D conversion equipment and access coupling assembling,
By the digital signal of the video/audio signal collection of simulation conversion gained, by the access assembly, upload;
In figure, 2 parts represent: the display part, rear end, comprise display device and access coupling assembling,
Access connects for receiving the video/audio signal that Internet Transmission is come, and does the storage demonstration with the storage display device;
In figure, 3 parts represent: the policy service module section,
Its minute several parts, be respectively:
Front and back end information module, the resource information that reports be used to collecting front and back end;
The analysis of strategies decision-making module, generate the global service strategy be used to the service strategy of utilizing resource information and external network, and deposit in the local policy storehouse;
Strategy distributes Executive Module, for the global service strategy dispenser by generating, is deployed to the front-end and back-end of institute's management and control in net;
The local policy storehouse, be used to the global service strategy in netting and the dynamic change situation of front and back end resource information;
Described 123 part reciprocal processes are namely the dynamic code stream adjustment processes
The course of work of foregoing screening and filtering splitter section, referring to Fig. 2, specifically comprises the following steps:
Step 4, rear end are received the transmission response request that strategic server is sent, and obtain the stream rate of previous step transmission, and bring into use relative strategy to start relevant data receiver thread, start to receive data.
Step 5, analysis of strategies decision-making module detect network change when need to upgrade stream rate, by strategy execution interface module notice front and back end, allow both adjust simultaneously stream rate.
Therefore a kind of video and audio transmission policy method of netting interior dynamic adjustment stream rate provided by the invention, have following advantage.
(1) integrated front and back end equipment, the unified strategy process flexible management of using;
(2) use detection method, according to variable situation, dynamically adjust stream rate, to exchange stable smooth video display effect for, promote the user and experience;
In several embodiment that the application provides, should be understood that disclosed system and method, not surpassing in the application's spirit and scope, can be realized in other way.The above-named embodiment that the present invention is integrated in the application of monitor video transmission system is a kind of exemplary example, should be as restriction, and given particular content should in no way limit the application's purpose.
The above is only the specific embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (4)
1. in a public network IP network, dynamically adjust the video and audio transmission policy method of stream rate, it is characterized in that, transmitting video data in the public network IP network, dynamically adjust the transmission method of stream rate by using Detection Techniques;
Video/audio is uploaded code stream after under headend equipment, encoding again, to stop at occupied bandwidth transmission on network complicated and changeable, by using detection method, automatically adjust stream rate to save bandwidth after network change being detected, guarantee to a certain extent the continual and steady of transmission; When network is normal, with normal stream rate, upload; Congested when the network generation, automatically adjust resolution/frame per second, and then reduce the code stream occupied bandwidth; When network recovery, more automatically recover original speed;
This strategy process comprises 3 major parts, is respectively fore-end, rear end part, policy module part, wherein,
The front end access section is divided and is comprised: programmable video front A/D conversion equipment and access coupling assembling, for the video/audio signal collection that will simulate the digital signal of changing gained, by the access assembly, upload;
Storage display part, rear end comprises display device and accesses coupling assembling that access connects for receiving the video/audio signal that Internet Transmission is come, and does the storage demonstration with the storage display device;
Policy module, refer to obtain policy library through the information to front and back end, and adopt dynamically hand over word flow rate of strategic decision-making according to different network information, and this policy service module rides on hosted service;
Network detection, the network detection method for transmitting procedure is used, adopt real-time detection method.
2. method according to claim 1, is characterized in that, also comprises: external policy executive's interface part, for: unified external service quality policy executive's interface externally is provided, utilizes this interface to obtain the quality of service policy of external network; Wherein, this module interface is deployed in respectively in front end, rear end and policy service module, is responsible for inline 3 sides and carries out transfer of data.
3. method according to claim 2, is characterized in that, also comprises: the policy module part, its minute several parts, be respectively:
Front and back end information module, the resource information that reports be used to collecting front and back end;
The analysis of strategies decision-making module, generate the global service quality policy be used to the quality of service policy that utilizes resource information and external network, and deposit in the local policy storehouse;
Strategy distributes Executive Module, for the global service quality policy dispenser by generating, is deployed to the front-end and back-end of institute's management and control in net;
The local policy storehouse, be used to the global service quality policy in netting and the dynamic change situation of front and back end resource information.
4. method according to claim 1, is characterized in that, also comprises: the dynamic instrumentation service, adopt Detection Techniques, for: the variation of real-time detection equipment.
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| CN109194516A (en) * | 2018-09-17 | 2019-01-11 | 北京亚鸿世纪科技发展有限公司 | A method of it reducing network flow and acquires equipment cost |
| CN110311756A (en) * | 2019-07-08 | 2019-10-08 | 山东省地质矿产勘查开发局八〇一水文地质工程地质大队 | Underground substance detection monitoring system and detection monitoring method |
| CN111770309A (en) * | 2020-06-24 | 2020-10-13 | 浙江大华技术股份有限公司 | Video uploading method and device, electronic equipment and storage medium |
| WO2022105798A1 (en) * | 2020-11-18 | 2022-05-27 | 花瓣云科技有限公司 | Video processing method and apparatus, and storage medium |
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Application publication date: 20131120 |