CN101867792B - Real-time transmission method for video record buffering - Google Patents
Real-time transmission method for video record buffering Download PDFInfo
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- CN101867792B CN101867792B CN2010101718463A CN201010171846A CN101867792B CN 101867792 B CN101867792 B CN 101867792B CN 2010101718463 A CN2010101718463 A CN 2010101718463A CN 201010171846 A CN201010171846 A CN 201010171846A CN 101867792 B CN101867792 B CN 101867792B
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Abstract
The invention discloses a real-time transmission method for video record buffering, which adopts a buffering storage technology to cache the data of each video channel, and when an alarming signal is input, a stream media server intercepts the video image before a certain period of the alarming triggering time point from the cache automatically to be spliced with the video image after the alarming triggering time point. The invention has the advantages that the on-site situation when alarming can be actually restored in time; a client display assembly provided by a monitoring management platform can help the user to handle various emergencies conveniently so as to effectively increase the working efficiency of the user; and the speed and the efficiency for playing back the on-site video records by the operation and maintenance personnel are greatly increased so as to react to the accidents in time.
Description
Technical field
The present invention relates to a kind of transmission and process field of monitoring video image in the field, especially relate to a kind of live transmission method of video record buffering.
Background technology
Bank's safety-protection system construction is existing for many years, and along with continuous progress in science and technology, various security products and security protection control and management software are also continuing to bring out, and have demonstrated the present situation of " let a hundred flowers blossom and a hundred schools of thought contend ".
In the past, bank's video record left the Surveillance center of district level in, realized the unified video recording of monitoring image and preserved, and higher level Surveillance center can remote inquiry, call video information.Present stage; On the management host of city-level Surveillance center, install the video system management software, through PC formula monitor, analog monitor or the matrix video wall that inserts; Not only can monitor in real time the information of any control point, inquiry, playback; Can also realize functions such as unified user management, equipment control, fault management, storage administration, really realize distributed monitoring, centralized management.
In general security protection control and management software, the video recording equipment of leading portion is recorded a video always in real time, and video recording is stored in the video recording host hard drive; When alert event takes place; Warning systems such as on-the-spot warning lamp, warning signal can be sent alarm sound, and Surveillance center's client can eject the warning of alarm point through alarm network system, reminds the associative operation attendant to note; If the Operation and Maintenance personnel want to check the video recording of reporting to the police just now; Need remote download to be stored in the video recording in the front end site video recording host hard drive, and will that section between the searching accident emergence period record a video, searching and process of downloading are with regard to pretty troublesome and inefficiency like this.
Summary of the invention
In order to overcome the above-mentioned shortcoming of prior art, the invention provides a kind of live transmission method of video record buffering, can realize front and back time-delay, buffer-stored and the automatic playback and the download function of video image efficiently, fast, expediently.
The technical solution adopted for the present invention to solve the technical problems is: a kind of live transmission method of video record buffering comprises the steps:
The first step, front end data acquisition equipment, audio frequency acquiring, video data and preservation in real time; Give streaming media server through Network Transmission simultaneously;
Second step; When alert occurring; The front end warning device produces alarm signal; Device management server in the monitoring management platform receives through network, then alarm signal is transmitted to the incident management server in the monitoring management platform, and the incident management server is handled signal according to the event handling rule of customization accordingly: when alarm signal need be carried out the video interlink processing; The incident management server is derived from the related video channel of moving judgement needs according to alarm signal, and the video channel data of association are sent to streaming media server simultaneously and receive the private client of reporting to the police;
The 3rd step; Streaming media server is after receiving warning associated video channel data; In associated video passage buffer storage data, find the stream medium data of time of fire alarming point; According to the processing rule that is provided with in advance, at first intercepting warning triggered time point audio, video data for the previous period from buffer memory is saved in the temporary file then; In temporary file, write the audio, video data of the some back a period of time in triggered time of reporting to the police then according to user's definition, in database, note the corresponding informance of alarm signal and temporary file simultaneously;
After private client is received alarm signal synchronously; To the streaming media server request of sending, the acquisition request on-the-spot audio frequency and video image of reporting to the police is after streaming media server is received request; Open the specific data file; Send audio, video data to private client, after private client receives data, call the client shows assembly and play.
Said front end data acquisition equipment can be digital hard disc video recorder, network video machine or network video monitor and control system.
Said streaming media server is opened up enough spatial caches for each road video channel, guarantees the stream medium data of buffer memory certain hour section.
Said front end warning device can be alarm host machine, DVR, detector or intelligent analytical instrument.
Said definition according to the user writes the some back a period of time in triggered time of reporting to the police in temporary file audio, video data adopts following steps: the audio, video data that at first writes current scene to temporary file; Judge whether user-defined back delay time point then: if not, then continue to write the audio, video data at current scene to temporary file; If then accomplish and write, close temporary file.
Said client shows assembly can provide double window mouth play mode, picture-in-picture play mode and with the window play mode.
Compared with prior art; Good effect of the present invention is: adopted the buffer-stored technology; The data of each road video channel are carried out caching process, and when alarm signal was imported, streaming media server is the video image of the preceding certain hour of intercepting warning triggered time point from buffer memory automatically; Splice the field condition the when warning of in time, truly reducing takes place with the video image behind the warning triggered time point; The client shows assembly that the monitoring management platform provides can be play the complete warning of splicing automatically and record a video in real time; With double window mouth, picture-in-picture, show with forms such as window broadcasts; Can help the user to handle various accidents quickly and easily, effectively improve user job efficient; Streaming media server can also be according to the rule of prior setting; Think that useful Video Document downloads and be stored in the file of local appointment automatically to the client; Just check after; The speed and the efficient of Operation and Maintenance personnel playback incident video recording have been improved greatly, so that in time accident is made a response.
Embodiment
A kind of live transmission method of video record buffering comprises the steps:
1, front end data acquisition equipment, audio frequency acquiring, video data and preservation in real time; Give streaming media server through Network Transmission simultaneously.Front end data acquisition equipment comprises digital hard disc video recorder (DVR), network video machine (NVR) and the network video monitor and control system (IPVS) of various models; When streaming media server starts, can be according to user's configuration, the video channel of the appointment that is dynamically connected is certainly obtained audio, video data; Streaming media server has been opened up enough spatial caches for each road video channel, guarantees the stream medium data that server can buffer memory certain hour section; Transmission of flow media data adopts ICP/IP protocol.
2, when alert occurring; Front end warning device (can be equipment such as alarm host machine, DVR, range detector, intelligent analytical instrument) produces alarm signal; Device management server in the monitoring management platform receives through network; Then alarm signal is transmitted to the incident management server in the monitoring management platform; The incident management server is handled signal according to the event handling rule of customization accordingly: handle if alarm signal need be carried out video interlink; The incident management server can be derived from the related video channel of moving judgement needs according to alarm signal so, and the video channel data of association are sent to streaming media server simultaneously and receive the private client of reporting to the police.
3, streaming media server is after receiving warning associated video channel data; In associated video passage buffer storage data, find the stream medium data of time of fire alarming point; According to the processing rule that is provided with in advance, at first intercepting warning triggered time point audio, video data for the previous period from buffer memory is saved in the temporary file then; In this document, write the audio, video data after the triggered time of reporting to the police puts then, can be undertaken self-defined the writing time of back time-delay by the user.In database, note simultaneously the corresponding informance of alarm signal and temporary file.Just comprised the on-the-spot complete data after before the accident happened of reporting to the police like this in the data file.
The audio, video data that in temporary file, writes after the triggered time of reporting to the police puts can adopt following steps: the audio, video data that at first writes current scene to temporary file; Judge whether back delay time point then:, continue to write the audio, video data at current scene to temporary file if not, then get back to back; If then accomplish and write, close temporary file.
Streaming media server can also to designated storage location, write database with warning message and history file contrast information with the stream medium data copying and saving according to user's customized rules, has access to later in order to the user.
After private client is received alarm signal synchronously; To the streaming media server request of sending, the acquisition request on-the-spot audio frequency and video image (being the real-time audio and video data that forward and backward fixed time section appears in alarm signal) of reporting to the police is after streaming media server is received request; Open specific data file (temporary file of video-audio frequency data); Send audio, video data to private client, after private client receives data, call the client shows assembly and play.
The monitoring management platform provides unified client shows assembly, is used for play stream media data, and following exhibition method is provided:
1) double window mouth play mode
Show two broadcast windows simultaneously, a window is play to report to the police live video is for the previous period taken place, and the another one window is play on-the-spot current real-time video.
2) picture-in-picture play mode
In same broadcast window, background is play on-the-spot current real-time video, plays to report to the police with a wicket simultaneously live video for the previous period takes place.
3) with the window play mode
The broadcast window playback video file that starts anew allows the user between video and on-site real-time video, to carry out freely switching in the playing process.
The client shows assembly provides the data file download function simultaneously, makes things convenient for the user that data file is downloaded to this locality and preserves.
Claims (6)
1. the live transmission method of a video record buffering is characterized in that: comprise the steps:
The first step, front end data acquisition equipment is gathered audio, video data and preservation in real time; Give streaming media server through Network Transmission simultaneously;
Second step; When alert occurring; The front end warning device produces alarm signal; Device management server in the monitoring management platform receives through network, then alarm signal is transmitted to the incident management server in the monitoring management platform, and the incident management server is handled signal according to the event handling rule of customization accordingly: when alarm signal need be carried out the video interlink processing; The incident management server is derived from the related video channel of moving judgement needs according to alarm signal, and the video channel data of association are sent to streaming media server simultaneously and receive the private client of reporting to the police;
The 3rd step; Streaming media server is after receiving warning associated video channel data; In associated video passage buffer storage data, find the stream medium data of time of fire alarming point; According to the processing rule that is provided with in advance, at first intercepting warning triggered time point audio, video data for the previous period from buffer memory is saved in the temporary file then; In temporary file, write the audio, video data of the some back a period of time in triggered time of reporting to the police then according to user's definition, in database, note the corresponding informance of alarm signal and temporary file simultaneously;
After private client is received alarm signal synchronously; To the streaming media server request of sending, the acquisition request on-the-spot audio frequency and video image of reporting to the police is after streaming media server is received request; Open the specific data file; Send audio, video data to private client, after private client receives data, call the client shows assembly and play;
The on-the-spot audio frequency and video image of said warning is meant that the real-time audio and video data of forward and backward fixed time section appear in alarm signal;
Said specific data file is meant the temporary file of video-audio frequency data.
2. the live transmission method of video record buffering according to claim 1, it is characterized in that: said front end data acquisition equipment can be digital hard disc video recorder, network video machine or network video monitor and control system.
3. the live transmission method of video record buffering according to claim 1, it is characterized in that: said streaming media server is opened up enough spatial caches for each road video channel, guarantees the stream medium data of buffer memory certain hour section.
4. the live transmission method of video record buffering according to claim 1, it is characterized in that: said front end warning device can be alarm host machine, DVR, detector or intelligent analytical instrument.
5. the live transmission method of video record buffering according to claim 1; It is characterized in that: said definition according to the user writes the some back a period of time in triggered time of reporting to the police in temporary file audio, video data, adopt following steps: the audio, video data that at first writes current scene to temporary file; Judge whether user-defined back delay time point then: if not, then continue to write the audio, video data at current scene to temporary file; If then accomplish writing, and close temporary file.
6. the live transmission method of video record buffering according to claim 1 is characterized in that: said client shows assembly can provide double window mouth play mode, picture-in-picture play mode and with the window play mode.
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