CN101984663A - Play control method and system of monitoring audio/video - Google Patents

Play control method and system of monitoring audio/video Download PDF

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Publication number
CN101984663A
CN101984663A CN2010105192673A CN201010519267A CN101984663A CN 101984663 A CN101984663 A CN 101984663A CN 2010105192673 A CN2010105192673 A CN 2010105192673A CN 201010519267 A CN201010519267 A CN 201010519267A CN 101984663 A CN101984663 A CN 101984663A
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audio
video
data
packet
alert
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CN101984663B (en
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陈兴
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ZTE Corp
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ZTE Corp
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Abstract

The invention discloses a play control method and system of the monitoring audio/video. By adopting the method and system of the invention, the audio/video data with characteristic data in the monitoring recording or video can be automatically positioned and played, and the technical problems of the traditional play control method that accurate positioning can not be realized, the efficiency is low, the specific parameters of the surrounding of the monitory point can not be determined quantitatively, etc., can be solved. The method comprises the following steps: when an audio/video coding device packs the audio/video data of a monitory point which are collected by an audio/video collecting device, the data packet with the audio/video data which fulfil the warning condition is marked, all the data packets are transmitted to a data storage device; the data storage device stores the data packets transmitted by the audio/video coding device, the data packets are detected in the storage process, the time information of the marked data packet is stored in a time index file; and when an audio/video play device plays in an automatic positioning play mode, the corresponding data packet is read for playing according to the time information recorded in the time index file.

Description

A kind of control method for playing back and system that monitors audio frequency and video
Technical field
The embodiment of the invention relates to the digital video monitoring field, relates in particular to the control method for playing back and the system of monitoring audio frequency and video.
Background technology
Along with monitoring technique whole progressive and the development of society and the raising of living standards of the people, people more and more pay close attention to noise pollution, fire alarm, traffic safety, electromagnetic radiation equals people's living standard and the closely-related problem of the security of the lives and property, and meanwhile various potential risks are also more and more, people wish in the various modernized amenities that indulge in luxuriousness to one's heart's desire, control various artificial, natural calamity, solve community, school, the construction site, the public place of entertainment, the hidden danger monitoring in zone such as road more and more becomes a trend of supervisory control system development for the science law enforcement provides scientific basis.
In addition, in the scientific research field, researcher also more and more is concerned about the measurement of some technical indicator, as sound, humidity, temperature, smog, pressure, speed, vibration, magnetic field intensity etc., and wish to obtain the effective audio, video data information that is associated with these index values, thereby for carrying out the scientific research condition that facilitates more efficiently.
For above-mentioned application generally is video camera and the data monitoring equipment of installing by in some important places such as sound, temperature, signal is passed through certain transmission network, pass to the server of the Surveillance center of appointment, again by memory device, with media store to storage medium.When needs were had access to the historical summary of recording or video recording, the related personnel can have access to recording or the video file that is stored on the medium, listened to recording or watched video recording, searched needed information.But, for example when checking video information, often have the not video recording interface in the beholder is concerned about scope of a large amount of special parameters, and the effective information that this part data comprises itself is few, thereby wastes a large amount of time.
For this situation, traditional processing method has two kinds at present: a kind of by F.F., promptly play by frame-skipping, skip the unconcerned picture of beholder, shorten viewing time, for streaming media playing, also can be by improving the transmission speed of streaming media server end video flowing.But owing to technical reason, require to watch personnel's high concentration attentiveness in the F.F. process, however the phenomenon of holiday effective information still happens occasionally in the reality.Another kind then by watching the manual drag and drop video recording of personnel playing progress bar, is skipped invalid picture, reaches the purpose that shortens viewing time.This method is missed the information that needs especially easily.And specific indexes parameter around above-mentioned two kinds of methods definite control point that all can't quantize, bring inconvenience for accurate orientation problem.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of control method for playing back and system that monitors audio frequency and video, can locate, play the audio, video data that comprises characteristic in monitoring recording or the video recording automatically, solves in traditional control method for playing back can't accurately locate, efficient is low, can't quantize to determine control point technical problem such as specific indexes parameter on every side.
For addressing the above problem, the invention provides a kind of control method for playing back of monitoring audio frequency and video, comprising:
The audio/video encoding device is when packing to the audio/video data of the control point of audio/video collecting device collection, and mark meets the packet at the audio/video data place of alert if, and all packets are sent to data storage device;
Data storage device is stored the packet that the audio/video encoding device sends, and in storing process packet is detected, and the temporal information of the packet that is labeled is kept in the time index file;
The audio/video playback equipment is with automatic positioning playing mode playback the time, and according to the temporal information that writes down in the time index file, the reading corresponding data bag is play.
Further, described alert if is its parameter condition paid close attention to that is set by the user.
Further, the described audio/video data that meets alert if is to judge that according to the alert if that the user sets which audio/video data data monitoring equipment warning tone/video encoder meets alert if by near the data monitoring equipment of installing control point or control point.
Further, data monitoring equipment comprises with in the lower sensor one or more: sound, temperature, humidity, smog, pressure, speed, vibration, magnetic field intensity.
Further, the described audio/video encoding device mark step of packet that meets the audio/video data place of alert if comprises: the audio/video encoding device meets mark in packet packet header at audio/video data place of alert if at all.
Further, the content of mark comprises: meet the mark of alert if, perhaps comprise: alert and if the mark that whether meets this alert if.
Further, the step of packet that described audio/video encoding device mark meets the audio/video data place of alert if comprises, described audio/video encoding device is at different alert if separator packets, and the mark of packet at audio/video data place that meets same alert if is identical;
Described data storage device comprises the step that the temporal information of the packet that is labeled is kept in the time index file: the temporal information that described data storage device will have the packet of same tag is kept in the time index file;
The audio/video playback equipment is according to the temporal information that writes down in the time index file, the step that the reading corresponding data bag is play comprises: described audio/video playback equipment is searched the time corresponding index file according to alert if, according to the temporal information that writes down in this time index file, the reading corresponding data bag is play.
Further, described data storage device comprises the step that the temporal information of the packet that is labeled is kept in the time index file: the time period information of continuous a plurality of packets that described data storage device will be labeled is kept in the time index file, described time period information comprises zero-time and concluding time, perhaps comprise zero-time and continuous data packet number, perhaps comprise the duration of zero-time and continuous packet.
Further, described audio/video playback equipment comprises the situation that switches to automatic positioning playing mode playback from other play mode with the state of automatic positioning playing mode playback, at this moment, reproduction time when described audio/video playback equipment obtains current the switching, in described time index file, search the temporal information nearest with described reproduction time, according to the temporal information that finds, the reading corresponding data bag is play.
Further, described data storage device comprises video monitoring platform or monitor client or streaming media server.
For addressing the above problem, the present invention also provides a kind of broadcasting control system of monitoring audio frequency and video, comprises audio/video collecting device, data monitoring equipment, audio/video encoding device, data storage device and audio/video playback equipment, wherein:
Described audio/video collecting device is used for the audio/video data of acquisition monitoring point, and the audio/video data that collects is transferred to the audio/video encoding device;
Described data monitoring equipment, it is installed near control point or the control point, be used for the environmental parameter variation according to the alert if monitoring point of user's setting, and which audio/video data of warning tone/video encoder meets alert if;
Described audio/video encoding device is used for when the audio/video data of the control point of audio/video collecting device collection is packed, and mark meets the packet at the audio/video data place of alert if, and all packets are sent to data storage device;
Described data storage device is used for the packet that the audio/video encoding device sends is stored, and in storing process packet is detected, and the temporal information of the packet that is labeled is kept in the time index file;
Described audio/video playback equipment is used for automatic positioning playing mode playback the time, and according to the temporal information that writes down in the time index file, the reading corresponding data bag is play.
Further, described data monitoring equipment comprises with in the lower sensor one or more: sound, temperature, humidity, smog, pressure, speed, vibration, magnetic field intensity.
Further, described audio/video encoding device also is used at different alert if separator packets, and the mark of packet at audio/video data place that meets same alert if is identical; Described data storage device, the temporal information that also is used for having the packet of same tag is kept at a time index file; Described audio/video playback equipment also is used for searching the time corresponding index file according to alert if, and according to the temporal information that writes down in this time index file, the reading corresponding data bag is play.
Further, described audio/video playback equipment, also be used for when switching to automatic positioning playing mode playback from other play mode, reproduction time when obtaining current the switching, in described time index file, search the temporal information nearest with described reproduction time, according to the temporal information that finds, the reading corresponding data bag is play.
Further, described data storage device comprises video monitoring platform or monitor client or streaming media server.
The embodiment of the invention has been introduced the time index file, by this document the audio, video data reproduction time section that includes effective information has been done mark, client is when having access to this video file, player is according to the time corresponding index file, the time period of writing down in the played in order index file, thereby effectively skipped unnecessary audio, video data, saved the video recording reproduction time, also provide possibility for accurately locating the audio, video data that comprises the special characteristic parameter.The present invention is applicable to the scene to special parameter sensitivities such as sound, temperature, humidity, smog, pressure, speed, vibration, magnetic field intensitys such as noise pollution monitoring, fire alarm monitoring, traffic monitoring, scientific experiment.
Description of drawings
Fig. 1 is the system configuration schematic diagram that the embodiment of the invention is play video monitoring method;
Fig. 2 is the flow chart of embodiment of the invention data processing method.
Embodiment
Traditional video file broadcast mode needs to skip unnecessary broadcasting pictures by F.F. or dilatory mode the broadcasting pictures that quick consumer positioning needs.In the streaming media playing process, also can arrive the purpose of quick location by the transmission speed that improves streaming media server end video flowing.But, under traditional play mode, there is easily specific indexes parameter around definite control point of omitting effective information, can't quantizing for quick location, also can't realize pinpoint problem, brought very big inconvenience to the user.
For this reason, the invention provides a kind of control method for playing back of monitoring audio frequency and video, comprising:
The audio/video encoding device is when packing to the audio/video data of the control point of audio/video collecting device collection, mark meets the packet at the audio/video data place of alert if, all packets are sent to data storage device, and described alert if is its parameter condition paid close attention to that is set by the user;
Data storage device is stored the packet that the audio/video encoding device sends, and in storing process packet is detected, and the temporal information of the packet that is labeled is kept in the time index file;
The audio/video playback equipment is with automatic positioning playing mode playback the time, and according to the temporal information that writes down in the time index file, the reading corresponding data bag is play.
Need to prove that " audio/video " mentioned in this article is meant audio frequency and/or video, promptly said method can be applied to audio frequency, perhaps noiseless video, perhaps sound video.Below all abbreviate " audio frequency and video " as.
The described audio/video data that meets alert if is to judge that according to the alert if that the user sets which audio, video data data monitoring equipment warning tone video encoder meets alert if by near the data monitoring equipment of installing control point or control point.
Data monitoring equipment comprises with in the lower sensor one or more: sound, temperature, humidity, smog, pressure, speed, vibration, magnetic field intensity.The user be a data monitoring apparatus settings alert if earlier before the log-on data monitoring equipment, and during alert if that the data fit user who arrives when the data monitoring monitoring of equipment sets, data monitoring equipment sends reports to the police to audio/video coding equipment.For example, on the sound monitoring equipment warning is set, when the voice data that collects reached the scope (as 60~70 decibels) of user's setting, data monitoring equipment sent warning message to audio/video coding equipment, if a plurality of parameter areas need be set, can use different warning information.
The step of packet that described mark meets the audio, video data place of alert if comprises: meet mark in packet packet header at audio, video data place of alert if at all.Preferably, can be in the extended field in packet packet header mark.
The content of mark comprises: the mark that meets alert if.Preferably, when a plurality of alert if, the content of mark comprises alert if (can be that the condition sign also can be a condition itself), and the mark that whether meets this alert if.In holding time during information, can preserve into different time index files at different alert if, be that the audio/video encoding device is at different alert if separator packets, the mark of packet at audio/video data place that meets same alert if is identical, and the temporal information that described data storage device will have the packet of same tag is kept in the time index file.When automatic positioning playing, the alert if that described audio/video playback equipment provides according to the beholder is searched the time corresponding index file, according to the temporal information that writes down in this time index file, the reading corresponding data bag is play, thereby can realize the broadcast at different alert if.
Described data storage device comprises the step that the temporal information of the packet that is labeled is kept in the time index file: the time period information of continuous a plurality of packets that described data storage device will be labeled is kept in the time index file, described time period information comprises zero-time and concluding time, perhaps comprise zero-time and continuous data packet number, perhaps comprise the duration of zero-time and continuous packet.Except the mode of above-mentioned holding time index file, do not get rid of also and can realize in the following ways: the time of in the time index file, writing down the packet at each audio, video data place that meets alert if.
Said method can with the prior art compatibility, promptly the user can select ordinary playing pattern or automatic positioning playing pattern.Only under automatic positioning playing pattern, playing audio/video is according to the temporal information that writes down in the described time index file, and the reading corresponding data bag is play.Under the ordinary playing pattern, playing audio/video is the time for reading index file not, plays all packets that the audio/video coding equipment of its storage sends.
Automatically positioning playing pattern and ordinary playing pattern can be switched at any time, when from the ordinary playing mode switch to automatic positioning playing mode playback, described playing audio/video is with automatic positioning playing mode playback the time, reproduction time when obtaining current the switching, searching the temporal information nearest with described reproduction time in described time index file (can be reproduction time time point before, also can be reproduction time time point afterwards), according to the temporal information that finds, the reading corresponding data bag is play.But do not get rid of from beginning again situation with automatic positioning playing mode playback.When from automatic positioning playing mode switch to the ordinary playing mode playback, time for reading index file no longer, but begin to play all packets of storage from the packet of current broadcast, reproduction time when perhaps obtaining current the switching, from the packet of preserving, search the packet corresponding, continue to play this packet all packets afterwards with this reproduction time.
In such scheme, playing audio/video is when playing, and only the packet of the temporal information correspondence that writes down in the reproduction time index file is not play for other audio, video data bag.Thereby be implemented in and shorten the monitoring video reproduction time under the prerequisite of not omitting effective information greatly.
Below in conjunction with accompanying drawing the present invention is described in further detail.
Embodiment 1
Present embodiment has been introduced the structure of the broadcasting control system of monitoring audio frequency and video, as shown in Figure 1, comprising:
The audio/video collecting device, it is used for the audio/video data (for example camera of Fig. 1) of acquisition monitoring point, and the audio/video data that collects is transferred to the audio/video encoding device;
Data monitoring equipment, it is installed near control point or the control point (as the data pick-up among Fig. 1, smoke monitoring transducer etc.), be used for environmental parameter variation, and which audio/video data of warning tone/video encoder meets alert if according to the alert if monitoring point of user's setting; Data monitoring equipment can comprise with in the lower sensor one or more: sound, temperature, humidity, smog, pressure, speed, vibration, magnetic field intensity;
The audio/video encoding device, it is used for when the audio/video data of the control point of audio/video collecting device collection is packed, and mark meets the packet at the audio/video data place of alert if, and all packets are sent to data storage device; Can be wired encoder as shown in Figure 1, also can be the wireless encoding device;
Data storage device, it is used for the packet that the audio/video encoding device sends is stored, and in storing process packet is detected, and the temporal information of the packet that is labeled is kept in the time index file; Data storage device can be monitor client (local video recording) or a video monitoring platform (network video recording) as shown in Figure 1, perhaps can also be streaming media server (Fig. 1 is not shown);
The audio/video playback equipment, it is used for automatic positioning playing mode playback the time, and according to the temporal information that writes down in the time index file, the reading corresponding data bag is play.
Embodiment 2
Present embodiment is mainly introduced the flow process of data storage device index file writing time, as shown in Figure 2, may further comprise the steps:
Step 201: initialization time started flag bit is false (m_bStaty=False), obtains minimum video time section m_s;
This minimum video time section is to guarantee the stored minimum time length of packet.
Step 202: judge whether comprise significant notation information in the current data packet packet header,, skip to step 203 if comprise; If do not comprise, skip to step 205;
Step 203: judge that whether the time started flag bit is true, if true, skips to step 208: if false, skip to step 204;
Step 204: the time started flag bit is set is true (m_bStart=True), the recording start time in the time index file, show that the content that begins to play from this time point is to satisfy the video clip of alert if, skip to step 208;
Step 205: judge that whether the time started flag bit is true, if true, skips to step 206; If false, skip to step 208;
Step 206: the difference of last time started of record of judging current video time in the time index file whether greater than the minimum video recording mark time period (Δ s whether>m_s, what described Δ s was current video time with the video clip time started of charging to recently is poor), if true, skip to step 207; If false, skip to step 208;
Step 207: the time started flag bit is set for false (m_bStart=False), the record end time in the time index file, skips to step 208;
Step 208: judge whether to be last packet,, skip to step 210 if true; If false, skip to step 209;
Step 209: read next packet, skip to step 202;
Step 210: judge that whether the time started flag bit is true, if true, skips to step 211; If false, skip to step 213;
Step 211: the time started flag bit is set for false (m_bStart=False), skips to step 212;
Step 212: the record end time in the time index file, skip to step 213;
Step 213: video recording finishes, video file and time corresponding index file warehouse-in.
In other embodiments, if minimum video time section m_s is not set, then above-mentioned steps 206,210 and 211 can be omitted.
Embodiment 3
Present embodiment is introduced the step of packet that mark meets the audio/video data place of alert if, and steps flow chart is as follows:
Step 301: the audio/video encoding device receives the audio/video data that the audio/video collecting device sends in real time;
Step 302: when audio/video coding equipment receives the warning message of data monitoring equipment transmission in real time, when the current audio/video data that receives is packed, squeeze into label information in the packet header of packet.
When for example the sound that receives warning message indication control point this moment that data monitoring equipment sends in real time when audio/video coding equipment is in the first audible alarm scope that the user is provided with, when the current data that receive are packed, mark A1; If the temperature that also receives warning message indication control point this moment that data monitoring equipment sends this moment is in the alarm range that the user is provided with the time, when the current data that receive are packed, mark T.After a period of time, the sound that receives warning message indication control point this moment that data monitoring equipment sends in real time when audio/video coding equipment is in the second sound alarm range that the user is provided with the time, when the current data that receive are packed, and mark A2.When writing the time index file, time index file that can be different according to different label records is to realize the broadcast at different alert if.
This paper embodiment records a video the method and system of Play Control owing to introduced the time index file, by this document the audio, video data reproduction time section that includes effective information has been done mark, playing audio/video is when having access to this video file, player is according to the time corresponding index file, the time period of writing down in the played in order index file, thereby effectively skipped unnecessary audio, video data, saved the video recording reproduction time, also provide possibility for accurately locating the audio, video data that comprises the special characteristic parameter.Simultaneously, broadcast mode can freely be changed in the ordinary playing mode with by between the time index file broadcast mode, has realized user's multiple demand, has improved user's Experience Degree.
One of ordinary skill in the art will appreciate that all or part of step in the said method can instruct related hardware to finish by program, described program can be stored in the computer-readable recording medium, as read-only memory, disk or CD etc.Alternatively, all or part of step of the foregoing description also can use one or more integrated circuits to realize.Correspondingly, each module in the foregoing description can adopt the form of hardware to realize, also can adopt the form of software function module to realize.The present invention is not restricted to the combination of the hardware and software of any particular form.
Certainly; the present invention also can have other numerous embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
For example, the present invention not only is applicable to the method that client terminal local is play, also be applicable to streaming media playing, client can send to streaming media server with the Streaming Media time of request, and streaming media server sends to client according to the time index file of preserving on it with corresponding medium bag.In order to alleviate the load of streaming media server, client is when the request Streaming Media, streaming media server can be issued to the time index file on the client, by client according to according to the time index file to streaming media server request Streaming Media, streaming media server provides Media Stream to the Streaming Media client, thereby realizes playing identical effect with client terminal local.

Claims (15)

1. control method for playing back of monitoring audio frequency and video comprises:
The audio/video encoding device is when packing to the audio/video data of the control point of audio/video collecting device collection, and mark meets the packet at the audio/video data place of alert if, and all packets are sent to data storage device;
Data storage device is stored the packet that the audio/video encoding device sends, and in storing process packet is detected, and the temporal information of the packet that is labeled is kept in the time index file;
The audio/video playback equipment is with automatic positioning playing mode playback the time, and according to the temporal information that writes down in the time index file, the reading corresponding data bag is play.
2. the method for claim 1 is characterized in that:
Described alert if is its parameter condition paid close attention to that is set by the user.
3. the method for claim 1 is characterized in that:
The described audio/video data that meets alert if is to judge that according to the alert if that the user sets which audio/video data data monitoring equipment warning tone/video encoder meets alert if by near the data monitoring equipment of installing control point or control point.
4. method as claimed in claim 3 is characterized in that:
Data monitoring equipment comprises with in the lower sensor one or more: sound, temperature, humidity, smog, pressure, speed, vibration, magnetic field intensity.
5. the method for claim 1 is characterized in that:
The step of packet that described audio/video encoding device mark meets the audio/video data place of alert if comprises: the audio/video encoding device meets mark in packet packet header at audio/video data place of alert if at all.
6. as claim 1 or 5 described methods, it is characterized in that:
The content of mark comprises: meet the mark of alert if, perhaps comprise: alert and if the mark that whether meets this alert if.
7. the method for claim 1 is characterized in that:
The step of packet that described audio/video encoding device mark meets the audio/video data place of alert if comprises, described audio/video encoding device is at different alert if separator packets, and the mark of packet at audio/video data place that meets same alert if is identical;
Described data storage device comprises the step that the temporal information of the packet that is labeled is kept in the time index file: the temporal information that described data storage device will have the packet of same tag is kept in the time index file;
The audio/video playback equipment is according to the temporal information that writes down in the time index file, the step that the reading corresponding data bag is play comprises: described audio/video playback equipment is searched the time corresponding index file according to alert if, according to the temporal information that writes down in this time index file, the reading corresponding data bag is play.
8. the method for claim 1 is characterized in that:
Described data storage device comprises the step that the temporal information of the packet that is labeled is kept in the time index file:
The time period information of continuous a plurality of packets that described data storage device will be labeled is kept in the time index file, described time period information comprises zero-time and concluding time, perhaps comprise zero-time and continuous data packet number, perhaps comprise the duration of zero-time and continuous packet.
9. the method for claim 1 is characterized in that:
Described audio/video playback equipment comprises the situation that switches to automatic positioning playing mode playback from other play mode with the state of automatic positioning playing mode playback, at this moment, reproduction time when described audio/video playback equipment obtains current the switching, in described time index file, search the temporal information nearest with described reproduction time, according to the temporal information that finds, the reading corresponding data bag is play.
10. the method for claim 1 is characterized in that:
Described data storage device comprises video monitoring platform or monitor client or streaming media server.
11. a broadcasting control system of monitoring audio frequency and video comprises audio/video collecting device, data monitoring equipment, audio/video encoding device, data storage device and audio/video playback equipment, wherein:
Described audio/video collecting device is used for the audio/video data of acquisition monitoring point, and the audio/video data that collects is transferred to the audio/video encoding device;
Described data monitoring equipment, it is installed near control point or the control point, be used for the environmental parameter variation according to the alert if monitoring point of user's setting, and which audio/video data of warning tone/video encoder meets alert if;
Described audio/video encoding device is used for when the audio/video data of the control point of audio/video collecting device collection is packed, and mark meets the packet at the audio/video data place of alert if, and all packets are sent to data storage device;
Described data storage device is used for the packet that the audio/video encoding device sends is stored, and in storing process packet is detected, and the temporal information of the packet that is labeled is kept in the time index file;
Described audio/video playback equipment is used for automatic positioning playing mode playback the time, and according to the temporal information that writes down in the time index file, the reading corresponding data bag is play.
12. system as claimed in claim 11 is characterized in that:
Described data monitoring equipment comprises with in the lower sensor one or more: sound, temperature, humidity, smog, pressure, speed, vibration, magnetic field intensity.
13. system as claimed in claim 11 is characterized in that:
Described audio/video encoding device also is used at different alert if separator packets, and the mark of packet at audio/video data place that meets same alert if is identical;
Described data storage device, the temporal information that also is used for having the packet of same tag is kept at a time index file;
Described audio/video playback equipment also is used for searching the time corresponding index file according to alert if, and according to the temporal information that writes down in this time index file, the reading corresponding data bag is play.
14., it is characterized in that as claim 11 or 13 described systems:
Described audio/video playback equipment, also be used for when switching to automatic positioning playing mode playback from other play mode, reproduction time when obtaining current the switching, in described time index file, search the temporal information nearest with described reproduction time, according to the temporal information that finds, the reading corresponding data bag is play.
15. system as claimed in claim 11 is characterized in that:
Described data storage device comprises video monitoring platform or monitor client or streaming media server.
CN201010519267.3A 2010-10-18 2010-10-18 Play control method and system of monitoring audio/video Expired - Fee Related CN101984663B (en)

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