CN109120885A - Video data acquisition methods and device - Google Patents

Video data acquisition methods and device Download PDF

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Publication number
CN109120885A
CN109120885A CN201710495206.XA CN201710495206A CN109120885A CN 109120885 A CN109120885 A CN 109120885A CN 201710495206 A CN201710495206 A CN 201710495206A CN 109120885 A CN109120885 A CN 109120885A
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CN
China
Prior art keywords
node
video data
target
index data
memory
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Granted
Application number
CN201710495206.XA
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Chinese (zh)
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CN109120885B (en
Inventor
丁光凯
汪渭春
林起芊
王伟
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Hangzhou Hikvision Digital Technology Co Ltd
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Hangzhou Hikvision Digital Technology Co Ltd
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Priority to CN201710495206.XA priority Critical patent/CN109120885B/en
Publication of CN109120885A publication Critical patent/CN109120885A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
    • 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
    • H04N21/231—Content storage operation, e.g. caching movies for short term storage, replicating data over plural servers, prioritizing data for deletion
    • H04N21/23103—Content storage operation, e.g. caching movies for short term storage, replicating data over plural servers, prioritizing data for deletion using load balancing strategies, e.g. by placing or distributing content on different disks, different memories or different servers
    • 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]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
    • H04N21/845—Structuring of content, e.g. decomposing content into time segments
    • H04N21/8455—Structuring of content, e.g. decomposing content into time segments involving pointers to the content, e.g. pointers to the I-frames of the video stream
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/93—Regeneration of the television signal or of selected parts thereof

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Information Transfer Between Computers (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

The invention discloses a kind of video data acquisition methods, apparatus and system, are applied in cloud storage system, which comprises receive the first acquisition request that terminal is sent, first acquisition request includes target time section；From at least two index data blocks of distributed storage, the index data of the corresponding video data of the target time section is inquired, the index datastore has the index of at least one video frame in the video data；The index data is sent to the terminal；The second acquisition request that the terminal is sent is received, second acquisition request includes the index data；From at least two video data block of distributed storage, video data corresponding with the index data is inquired；The video data is sent to the terminal.

Description

Video data acquisition methods and device
Technical field
The present embodiments relate to cloud storage field, in particular to a kind of video data acquisition methods and device.
Background technique
Monitoring system includes video camera and storage system, and the video data of shot by camera is stored in and deposits by management node In storage system.
In the storing process of video data, video data is divided into multiple video datas according to the different periods Block generates an index file for each video data block, the corresponding index file of video data block is stored to same storage In node.When terminal, which obtains the video data in target time section from cloud storage system, carries out video playback, this is needed to be traversed for The index file of each video data block in memory node, to find the video data for belonging to target time section, and will view Frequency is according to being played back.
But with the increase of number of cameras and monitor duration, the data volume of the video data in cloud storage system can be more next It is bigger, so that the data volume of the corresponding index file of video data is also increasing.When the data volume of index file reaches certain It requires to traverse all index files after the order of magnitude, when due to playing back every time, traversal is caused to search the efficiency of all index files It is lower.
Summary of the invention
The efficiency of all index files of traversal lookup is lower when in order to solve the problems, such as playback, the embodiment of the invention provides A kind of video data acquisition methods and device.The technical solution is as follows:
According to the first aspect of the invention, a kind of video data acquisition methods are provided, are applied in cloud storage system, institute The method of stating includes:
The first acquisition request that terminal is sent is received, first acquisition request includes target time section；
From at least two index data blocks of distributed storage, the corresponding video data of the target time section is inquired Index data；
The index data is sent to the terminal；
The second acquisition request that the terminal is sent is received, second acquisition request includes the index data；
From at least two video data block of distributed storage, video data corresponding with the index data is obtained；
The video data is sent to the terminal.
In an alternative embodiment, the cloud storage system further include:
At least two memory nodes and at least one forward node, at least two memory node are used for distributed storage The index data block；
In at least two index data blocks from distributed storage, the corresponding video of the target time section is inquired The index data of data, comprising:
Target forward node obtains the index corresponding with the target time section from least two memory node Data, the target forward node are one at least one described forward node.
In an alternative embodiment, the cloud storage system further include: management node；
At least two memory node is also used to store the first metadata of the index data block, first yuan of number According to the memory node and storage location where time segment information and the index data block including the index data block；
The target forward node obtains corresponding with the target time section described at least two memory node Index data, comprising:
The target forward node sends the first metadata acquisition request to the management node, and first metadata obtains Taking request includes the target time section；
The target forward node receives first yuan for belonging to the target time section that the management node is sent Data, first metadata for belonging to the target time section are that the management node is looked at least two memory node What inquiry obtained；
The target forward node determines first object memory node according to first metadata, to described to first Target storage node inquires index data corresponding with the target time section.
In an alternative embodiment, the cloud storage system further include: at least two memory nodes and at least one Forward node, at least two memory node is for video data block described in distributed storage；
In at least two video data block from distributed storage, video corresponding with the index data is inquired Data, comprising:
Target forward node obtains video data corresponding with the index data, institute from least two memory node Stating target forward node is one at least one described forward node.
In an alternative embodiment, the index data includes belonging in the video data of the target time section The frame storage location of at least one video frame；
At least two memory node is also used to store the second metadata of the video data block, the binary number According to the memory node and storage location where the time segment information and the video data block for including the video data block；
The target forward node obtains video counts corresponding with the index data from least two memory node According to, comprising:
The target forward node sends the second metadata acquisition request to the management node, and second metadata obtains Taking request includes the target time section；
The target forward node receives second yuan for belonging to the target time section that the management node is sent Data, it is described to belong to management node described in the second metadata of the target time section and inquired at least two memory node It obtains；
The target forward node determines the second target storage node according to second metadata, is deposited according to the frame Storage space sets to second target storage node and obtains the video data.
In an alternative embodiment, the cloud storage system further include: management node；
Before first acquisition request for receiving terminal transmission, further includes:
The management node receives the node acquisition request that terminal is sent, and the node acquisition request is for requesting the pipe It manages node and distributes the target forward node；
The management node distributes the target forward node from least one described forward node, sends out to the terminal Send the address of service of the target forward node；
First acquisition request for receiving terminal and sending, comprising:
The target forward node receives first acquisition request that the terminal is sent by the address of service.
In an alternative embodiment, the cloud storage system further include: access node；
In at least two index data blocks from distributed storage, view corresponding with the target time section is inquired Before the index data of frequency evidence, further includes:
Access node obtains the video data；
The access node carries out frame analysis to the video data, obtains the index data；
The index data is divided into at least two index data blocks by the access node, by the index data Storage mode is stored at least two memory nodes block in a distributed manner；
The video data is divided at least two video data block by the access node, by the video data Storage mode is stored at least two memory nodes block in a distributed manner.
In an alternative embodiment, the index data is divided at least one described index by the access node Data block, by the index data block, storage mode is stored at least two memory nodes in a distributed manner, comprising:
The access node sends the first distribution request to management node, and first distribution request is for requesting the pipe Memory node when node distribution i-th storage is managed, wherein i >=1；
The access node receives the identification information of the memory node when i-th stores, when the i-th stores Memory node is the storage section when i-th that the management node is selected from least two memory node stores Point；
I-th index data block of the access node by length in the index data no more than predetermined data value is written The memory node when i-th stores；
I=i+1 is enabled, and re-executes the step that the management node receives the first distribution request that the access node is sent Suddenly.
In an alternative embodiment, the video data is divided at least one described video by the access node Data block, by the video data block, storage mode is stored at least two memory nodes in a distributed manner, comprising:
The access node sends the second distribution request to management node, and second distribution request is for requesting the pipe Memory node when node distribution kth time storage is managed, wherein k >=1；
The access node receives the identification information of the memory node when kth time stores, when the kth time stores Memory node is the storage section when kth time that the management node is selected from least two memory node stores Point；
K-th video data block of the access node by length in the video data no more than predetermined data value is written The memory node when kth time storage；
K=k+1 is enabled, and re-executes the step that the management node receives the second distribution request that the access node is sent Suddenly.
In the second aspect of the present invention, a kind of video data acquisition methods are provided, which comprises
The first acquisition request is sent to cloud storage system, first acquisition request includes target time section；
The index data that the cloud storage system is sent is received, the index datastore has the target time section corresponding Video data at least one video frame index, the index data is the cloud storage system from distributed storage It is inquired at least two index data blocks；
The second acquisition request is sent to the cloud storage system, second acquisition request includes the index data；
Receive the video data that the cloud storage system is sent；The video data is the cloud storage system from distribution Obtained video data corresponding with the index data is inquired at least two video data block of storage；
The video data is encapsulated as video flowing, and the video flowing is played back.
In an alternative embodiment, the cloud storage system further include: management node, at least two memory nodes and At least one forward node；
Before first acquisition request of transmission to cloud storage system, further includes:
To the management node sending node acquisition request, the node acquisition request is for requesting the management node point With the target forward node, the target forward node is one at least one described forward node；
The address of service for the target forward node that the management node is sent is received, the target forward node is institute It states management node and distributes to the terminal after being selected at least one described forward node；
It is described to send the first acquisition request to cloud storage system, comprising:
First acquisition request is sent to the address of service of the target forward node.
In an alternative embodiment, the method is executed by being equipped with the terminal of cloud application and cloud storage tool；
It is described to send the first acquisition request to cloud storage system, comprising:
The cloud storage tool is called to inquire the index data by the cloud application；
First acquisition request is sent to the cloud storage system by the cloud storage tool, first acquisition is asked It asks including target time section.
In the third aspect of the present invention, a kind of cloud storage system is provided, the system comprises: at least one forward node With at least two memory nodes；
Target forward node, for receiving the first acquisition request of terminal transmission, first acquisition request includes target Period, the target forward node are one at least one described forward node；
The target forward node is also used at least two indexes from at least two memory nodes distributed storage In data block, the index data of the corresponding video data of the target time section is inquired；
The target forward node is also used to send the index data to the terminal；
The target forward node, is also used to receive the second acquisition request that the terminal is sent, and second acquisition is asked It asks including the index data；
The target forward node is also used at least two videos from at least two memory nodes distributed storage In data block, video data corresponding with the index data is obtained；
The target forward node is also used to send the video data to the terminal.
In an alternative embodiment, the system also includes management nodes；
At least two memory node is also used to the first metadata of index data block described in distributed storage, described First metadata includes the time segment information of the index data block and memory node where the index data block and deposits Storage space is set；
The target forward node, be also used to the management node send the first metadata acquisition request, described first Metadata acquisition request includes the target time section；
The target forward node is also used to receive the described of management node transmission and belongs to the target time section First metadata；
The target forward node is also used to belong to according to the first metadata of the target time section, to described At least two memory nodes inquire index data corresponding with the target time section.
In an alternative embodiment, the target forward node is also used to send second yuan to the management node Data acquisition request, the second metadata acquisition request include the target time section；
The target forward node is also used to receive the described of management node transmission and belongs to the target time section Second metadata；
The target forward node is also used to determine target storage node, the target according to second metadata Memory node is the memory node where the video data；
The target forward node is also used to obtain the video data according to the frame storage location.
In an alternative embodiment, the system also includes management nodes；
The management node, for receiving the node acquisition request of terminal transmission, the node acquisition request is for requesting The management node distributes the target forward node；
The management node is also used to distribute the target forward node from least one described forward node；To institute State the address of service that terminal sends the target forward node；
The target forward node is also used to receive the terminal is sent described first by the address of service and obtains Request.
In an alternative embodiment, the system also includes access nodes；
Access node, for obtaining the video data；
The access node is also used to carry out frame analysis to the video data, obtains the index data；
The access node is also used to for the index data to be divided into at least two index data blocks；
The access node, is also used to that storage mode is stored to described at least two in a distributed manner by the index data block In memory node；
The access node is also used to for the video data to be divided at least two video data block；
The access node, is also used to that storage mode is stored to described at least two in a distributed manner by the video data block In memory node.
In an alternative embodiment, the access node is also used to send the first distribution request, institute to management node Memory node of first distribution request for requesting the management node distribution i-th to store when is stated, wherein i >=1；
The access node is also used to receive the identification information of memory node when i-th storage, the i-th When memory node when storage is the i-th storage that the management node is selected from least two memory node Memory node；
The access node is also used to for length in the index data being not more than i-th of index number of predetermined data value Memory node when i-th storage is written according to block；
The access node is also used to enable i=i+1, and sends first distribution request to the management node again.
In an alternative embodiment, the access node is also used to send the second distribution request, institute to management node Memory node of second distribution request for requesting the management node distribution kth time to store when is stated, wherein k >=1；
The access node is also used to receive the identification information of the memory node when kth time storage, the kth time When memory node when storage is the kth time storage that the management node is selected from least two memory node Memory node；
The access node is also used to for length in the video data being not more than k-th of video counts of predetermined data value The memory node when kth time storage is written according to block；
The access node is also used to enable k=k+1, and sends second distribution request to the management node again The step of.
In the fourth aspect of the present invention, additionally provide
A kind of video data acquisition terminal, the terminal include:
Sending module, for sending the first acquisition request to cloud storage system, when first acquisition request includes target Between section；
Receiving module, the index data sent for receiving the cloud storage system, the index datastore has described The index of at least one video frame in the corresponding video data of target time section, the index data are the cloud storage systems It is inquired from least two index data blocks of distributed storage；
The sending module, for sending the second acquisition request, the second acquisition request packet to the cloud storage system Include the index data；
The receiving module, the video data sent for receiving the cloud storage system；The video data is described Cloud storage system inquires obtained view corresponding with the index data from least two video data block of distributed storage Frequency evidence；
Package module, for the video data to be encapsulated as video flowing；
Playback module, for being played back to the video flowing.
In an alternative embodiment, the cloud storage system further include: management node, at least two memory nodes and At least one forward node；
The terminal, comprising:
Told sending module, for the management node sending node acquisition request, the node acquisition request to be used for The management node is requested to distribute the target forward node, the target forward node is at least one described forward node One；
The receiving module, for receiving the address of service for the target forward node that the management node is sent, institute Stating target forward node is that the management node distributes to the terminal after being selected at least one described forward node 's；
The sending module, comprising:
Sending submodule, for sending first acquisition request to the address of service of the target forward node.
In an alternative embodiment, cloud application and cloud storage tool are installed in the terminal；
The terminal, further includes:
Calling module, for calling the cloud storage tool to inquire the index data by the cloud application；
The sending module is also used to send first acquisition to the cloud storage system by the cloud storage tool Request, first acquisition request includes target time section.
Technical solution provided in an embodiment of the present invention has the benefit that
By the way that by index data and video data separation storage, and by index data, storage mode dispersion is stored in a distributed manner In multiple storage equipment, at least two index data blocks are obtained, are made it possible to during video playback from least two Index data corresponding with target time section is obtained in index data block in a manner of concurrently extracting, and then is mentioned according to index data Video data corresponding with target time section is taken, to the extraction efficiency of index data when improving video playback.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other Attached drawing.
Figure 1A to Figure 1B is the structural schematic diagram that the video data that an illustrative embodiment of the invention provides obtains system；
Fig. 2 is the structural schematic diagram for the cloud storage system that an illustrative embodiment of the invention provides；
Fig. 3 is the flow chart for the video data acquisition methods that an illustrative embodiment of the invention provides；
Fig. 4 is the flow chart for the video data acquisition methods that another exemplary embodiment of the invention provides；
Fig. 5 is the flow chart for the video data acquisition methods that another exemplary embodiment of the invention provides；
Fig. 6 A to 6B is the structural schematic diagram for the memory node that another exemplary embodiment of the invention provides；
Fig. 7 is the flow chart for the video data acquisition methods that another exemplary embodiment of the invention provides；
Fig. 8 is the flow chart for the video data acquisition methods that another exemplary embodiment of the invention provides；
Fig. 9 is the block diagram for the terminal that the embodiment of an example of the present invention provides；
Figure 10 is the block diagram of the structure for the cloud storage system that the embodiment of an example of the present invention provides；
Figure 11 is the block diagram of the structure for the terminal that another exemplary embodiment of the invention provides.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention Formula is described in further detail.
Figure 1A is the structural schematic diagram that the video data that an illustrative embodiment of the invention provides obtains system.The system It include: at least one video camera 120, cloud storage system 140 and at least one terminal 160.
Video camera 120 is the equipment for shooting video data, such as: road monitoring camera, community security defence video camera, Any one in the video cameras such as building site video camera, industrial camera.Optionally, each video camera 120 has respective coding Device ID (Identification, identity number).Each encoder ID is used for one video camera of unique identification.
Video camera 120 is attached with cloud storage system 140 by communication network 130.Optionally, the communication network 130 It can be at least one of local area network, wide area network, Metropolitan Area Network (MAN).
Cloud storage system 140 includes: access node 141, at least two memory nodes 142, management node 143 and at least One forward node 144.
Access node 142 is to store the video data of shooting into memory node 142 for video camera 120.Work as storage When node 142 is multiple, video data is divided into multiple video data block by access node 141, and each video data block is sent To in corresponding target storage node, which is one at least two memory nodes；Access node 141 are also used to for index data being divided into multiple index data blocks, and each index data block is sent to corresponding target and deposits It stores up in node, which is one at least two memory nodes.
At least two memory nodes 142 are for storing video data and index data relevant to video data, at least Two memory nodes 142 are used for distributed storage video data and index data relevant to video data.For video counts For, distributed storage refers to that video data, which is divided into multiple video data block dispersions, is stored at least two memory nodes In；For index data, distributed storage refer to by index data be divided into the dispersion of multiple index data blocks be stored in In few two memory nodes 142.
As shown in Figure 1B, schematically, the data stored in a memory node 142 include: at least one index data Block 145, the metadata 146 of at least one index data block, at least one video data block 147 and at least one video data The metadata 148 of block,.
Index data block 145 is deposited at least two memory nodes by distributed storage mode by index data Store up obtained data block, include in index data block the timestamp information of at least one video frame, the video frame offset with And the deflected length of the video frame.Such as: the timestamp on index data block including video frame 1 is 2015/8/30 8:00, video The offset of frame 1 is 20, and the deflected length of video frame 1 is 20；The timestamp of video frame 2 is 2015/8/30 8:01, video frame 2 Offset be 40, the deflected length of video frame 2 is 20；The timestamp of video frame 3 is 2015/8/30 8:02, video frame 3 Offset is 60, and the deflected length of video frame 3 is 20.Optionally, when the quantity of video camera is greater than 1, in the index data block It further include the encoder ID of video camera, the present invention is not limited this.
It include: period and the storage position of index data block of index data block in the metadata 146 of index data block It sets.Such as: the period of index data block 1 is 2015/8/30 8:00-9:00, and the storage location of index data block 1 is storage section Point 1.It optionally, further include the encoder of video camera in the metadata of the index data block when the quantity of video camera is greater than 1 ID, the embodiment of the present invention are not limited this.
The video data block 147 is carried out at least two memory nodes by distributed storage mode by video data Obtained data block is stored, includes the data of video camera video captured within certain a period of time in video data block, As: the video data of video data block 1 is 2015/8/30 8:00-9:00 video data as captured by video camera 1001.It can Selection of land further includes the encoder ID of video camera, the embodiment of the present invention in the video data block when the quantity of video camera is greater than 1 This is not limited.
It include: time segment information and the storage of video data block of video data block in the metadata 148 of video data Position.Such as: the period of video data block 1 is 2015/8/30 8:00-9:00, and the storage location of video data block 1 is storage The physical address L of node 1.It optionally, further include taking the photograph in the metadata of the video data block when the quantity of video camera is greater than 1 The encoder ID of camera, the embodiment of the present invention are not limited this.
Management node 146 is used for the memory phase in video data, distributes mesh to access node from multiple memory nodes Mark memory node；It is also used to the playback phase in video data, to terminal distribution target forward node from multiple forward node.
At least one forward node 142 is used to forward data or information mutually between memory node 144 and terminal 160, The data or information being forwarded include: index data, the first metadata acquisition request, the first metadata, the acquisition of the second metadata At least one of request, the second metadata.
Optionally, above-mentioned access node 142, at least two memory nodes 144, management node 146 and at least one turn The component part that node 148 is cloud storage system is sent out, is connected between each node by local area network, which includes wireless local area At least one of net or cable LAN.
Cloud storage system 140 is attached with terminal 160 by communication network 130.Optionally, which can To be at least one of local area network, wide area network, Metropolitan Area Network (MAN).
Terminal 160 is the equipment for being played back to the video data that video camera is shot, which can be mobile phone, puts down At least one of plate computer, laptop portable computer, desktop computer, optionally, terminal 160 are to support dynamic code rate adaptive Answer the terminal of technology (HTTP Live Streaming, HLS) agreement.The present invention is not limited this.
It should be noted that above-mentioned each node is logic entity, it can be by the combination of software, hardware or both come real Existing, different nodes may be implemented on same hardware device.Fig. 2 is the cloud storage that an illustrative embodiment of the invention provides The structural schematic diagram of system.The cloud storage system includes: management equipment 210, storage equipment 220 and storage equipment 230.
It wherein, include management node 211 in management equipment 210, which is that video data shown in FIG. 1 obtains Take the management node 146 in the structure of system.
It stores in equipment 220, including forward node 221, memory node 222 and access node 223, stores equipment 230 In, including forward node 231, memory node 232 and access node 233.In the embodiment of the present invention in each storage equipment Have and is illustrated for a forward node, a memory node and an access node.Optionally, there are a storages to set Can only include memory node and access node in standby, can also only include memory node and forward node, the present invention to this not It is limited.
In the structural schematic diagram of above-mentioned cloud storage system, it is illustrated there are two for by storing equipment, in practical operation In, the storage equipment in cloud storage system can have less or more, and the present invention is not limited this.
Fig. 3 is the flow chart for the video data acquisition methods that an illustrative embodiment of the invention provides.This method is to answer Come in video data acquisition system shown in FIG. 1 for example, as shown in figure 3, the video data acquisition methods include:
In step 301, terminal sends the first acquisition request to cloud storage system.
In first acquisition request include target time section further include optionally the terminal in first acquisition request Mailing address, cloud storage system can send data or information to terminal by the mailing address.The target time section is user's choosing The period of the video flowing for the designated playback selected.
It optionally, further include the encoder ID of video camera in first acquisition request if video camera is multiple.
In step 302, cloud storage system receives the first acquisition request that terminal is sent.
In step 303, cloud storage system is from least two index data blocks of distributed storage, when inquiring target Between the corresponding video data of section index data.
Distributed storage, which refers to, is stored in index data dispersion at least two memory nodes.
It include the offset of offset and the video frame of at least one video frame in video data in the index data Length.Offset is used to determine the initial position of video frame, the deflected length i.e. frame of the video frame in entire video data Data length, such as 2134 bits.
Index data block is to disperse to store at least two storage equipment by distributed storage mode by index data At least two obtained data blocks.It optionally, further include that camera shooting is set when the quantity of picture pick-up device is greater than 1, in the index data Standby encoder ID.
Cloud storage system is by matching the time segment information of target time section and each index data block, from least The index data of video data corresponding with target time section is concurrently extracted in two index data blocks.
In step 304, cloud storage system sends index data to terminal.
Cloud storage system sends index data according to terminal mailing address, to terminal.
In step 305, terminal receives the index data that cloud storage system is sent.
Within step 306, terminal sends the second acquisition request to cloud storage system.
It include all or part of for the index data that terminal receives in second acquisition request.It is wrapped in the index data The offset of at least one video frame and the deflected length of the video frame are included, the offset and deflected length of the video frame are passed through Storage location of the video frame in video data can be obtained, and the corresponding video counts of index data are obtained according to the storage location According to.Optionally, cloud storage system can inquire the corresponding video data of index data by the index data.
In step 307, cloud storage system receives the second acquisition request that terminal is sent.
In step 308, cloud storage system obtains index data from least two video data block of distributed storage Corresponding video data.Video data is obtained by the frame information of time segment information and video data in index data, it can Selection of land, when cloud storage system obtains corresponding video data according to index data, according to the period acquisition of information period The I frame data of video data corresponding to information simultaneously obtain the corresponding P frame data of I frame.Wherein, I frame is certain in video data The first frame of one section of video data, P frame are in this section of video data based on the I frame data and relative to the change of the I frame data Change the video frame that coding obtains obtained by difference, P frame can be multiple video frames.
In a step 309, cloud storage system sends video data to terminal.
In the step 310, terminal receives the video data that cloud storage system is sent.
In step 311, the video data received is encapsulated as video flowing by terminal.
Video data is encapsulated as video flowing by protocol stack by terminal, and optionally, in the present embodiment, terminal can be by video Data are encapsulated as HLS video flowing.
In step 312, terminal plays back video flowing.
In conclusion video data acquisition methods provided in an embodiment of the present invention, by by video data and and video The corresponding index data of data disperses to be stored in multiple storage equipment by distributed storage mode, obtains at least two videos Data block and at least two index data blocks are obtained and are regarded from least two index data blocks during video playback Frequency improves the extraction efficiency of index data according to corresponding index data.
In an illustrative implement scene, there are at least one forward node and at least two in the cloud storage system Memory node is for the step of completing cloud storage system side in Fig. 3 embodiment of the method.Fig. 4 is an illustrative embodiment of the invention The flow chart of the video data acquisition methods of offer, this method comprises:
In step 401, terminal sends the first acquisition request to target forward node.
Wherein, which is one at least one forward node.It include mesh in first acquisition request The period is marked, optionally, in first acquisition request further includes the mailing address of the terminal, target forward node can be logical by this Believe that index data and video data are fed back to terminal in address.The target time section is the video flowing of the designated playback of user's selection Period.
It optionally, in first acquisition request further include the encoder ID of video camera if video camera is multiple.
In step 402, target forward node receives the first acquisition request that terminal is sent.
In step 403, target forward node obtains index corresponding with target time section from least two memory nodes Data.
Schematically, target forward node obtains index data corresponding with target time section from least two memory nodes Mode may include: that all memory nodes of the target forward node into cloud storage system send index data acquisition request, It include the target time section in the index data acquisition request；The index that each memory node stores target time section with itself Data are matched, if it exists index data corresponding with the target time section, then index data are sent to target forwarding section Point.
In step 404, target forward node sends index data to terminal.
Target forward node receives the index data of each memory node feedback, when there are more than two memory nodes are anti- Present index data corresponding with target time section when, target forward node summarizes at least two index datas, obtain and The corresponding whole index datas of target time section.
It optionally, include: the offset of multiple video frames in the video data for belong to target time section in the index data Amount and deflected length, by the offset and deflected length of each video frame can determine each video frame in video data Storage location, and read according to the storage location frame data of each video frame.
In step 405, terminal receives the index data that target forward node is sent.
Optionally, index data is index data corresponding with target time section.
In a step 406, terminal sends the second acquisition request to target forward node.
It include the index data in second acquisition request, target forward node can pass through at least one in the index data The offset and deflected length of a video frame, obtain video data from least two memory nodes.
In step 407, target forward node receives the second acquisition request that terminal is sent.
In a step 408, target forward node obtains video counts corresponding with index data from least two memory nodes According to.
Schematically, target forward node obtains video data corresponding with index data from least two memory nodes Mode may is that all memory nodes of the target forward node into cloud storage system send video data block acquisition request, root According to the offset and deflected length of the video frame for including in index data, video frame corresponding with the index data is obtained in video Storage location in data obtains the corresponding video of the index data according to the video data block got and the storage location Data.
In step 409, target forward node sends video data to terminal.
In step 410, terminal receives the video data that target forward node is sent.
In step 411, video data is encapsulated as video flowing by terminal.
Video data is encapsulated as video flowing by protocol stack by terminal, and optionally, in the present embodiment, terminal can be by video Data are encapsulated as HLS video flowing.
In step 412, terminal plays back video flowing.
In an illustrative implement scene, there are at least one forward node, at least two storages in the cloud storage Node and management node are for the step of completing cloud storage system side in Fig. 3 embodiment of the method.Specific implementation is as follows:
Fig. 5 is the flow chart for the video data acquisition methods that another exemplary embodiment of the invention provides.
In step 501, cloud application calls cloud storage SDK search index data.
In step 502, cloud storage SDK is to management node sending node acquisition request, and the node acquisition request is for asking Management node is asked to distribute target forward node.
Optionally, the address of the management node of the cloud storage system is preserved in cloud storage SDK, cloud storage SDK is by being somebody's turn to do Address is to the management node sending node acquisition request.Optionally, it further includes cloud storage that the node acquisition that cloud storage SDK is sent, which is asked, The mailing address of SDK.Management node can distribute target forward node to cloud storage SDK by the mailing address.
In step 503, management node receives the node acquisition request that cloud storage SDK is sent.
In step 504, management node distributes target forward node from least one forward node.
Optionally, there are multiple forward node in the cloud storage system, management node can be by comparing each forward node Load capacity selects the smallest forward node of load capacity for target forward node.
Optionally, it for the mode of target forward node includes: to randomly select that management node, which selects one of forward node, At least one of mode, polling mode or load balancing mode.
The mode of randomly selecting can be management node and randomly select a forward node from all forward node, by this turn Hair node is chosen to be target forward node；
Polling mode can be acquisition and select i-th of forward node according to preset order, be determined as target forward node；
Load balancing mode can be, and management node obtains the loading information of all forward node and selects load capacity most Small forward node is target forward node.Schematically, load balancing mode are as follows: have 5 forwarding sections in the cloud storage system Point, management node obtain the load capacity of 5 forward node, select wherein the smallest 2nd forward node of load capacity be target turn Send out node.
In step 505, management node sends the address of service of target forward node to cloud storage SDK.
Optionally, there are the address of service of all forward node in the cloud storage system, management node choosing in management node The smallest forward node of load is selected as after target forward node, the address of service of the target forward node is sent in terminal Cloud storage SDK.
In step 506, cloud storage SDK receives the address of service for the target forward node that management node is sent.
In step 507, cloud storage SDK sends the first acquisition request to the address of service of target forward node, this first Acquisition request includes target time section, optionally, in first metadata further includes the mailing address of cloud storage SDK.It is optional Ground, when the quantity of video camera is greater than 1, which further includes the encoder of the corresponding video camera of target time section ID。
In step 508, target forward node receives the first acquisition request that cloud storage SDK is sent by address of service.
In step 509, target forward node sends the first metadata acquisition request to management node.
The first metadata acquisition request includes target time section, and target forward node is obtained by sending first metadata Request is taken to obtain the first metadata to management node.It optionally, further include target forwarding in the first metadata acquisition request First metadata can be sent to the target forward node by the address of service by the address of service of node, management node.
In step 510, management node receives the first metadata acquisition request that target forward node is sent.
In step 511, management node sends the first metadata for belonging to target time section to target forward node.
Time segment information in first metadata including index data block and the memory node where index data block And storage location.It optionally, further include the coding of picture pick-up device in first metadata when the quantity of picture pick-up device is greater than 1 Device ID.First metadata is that management node inquires to obtain at least two memory nodes.
In step 512, target forward node receives the first metadata for belonging to target time section that management node is sent.
In step 513, target forward node determines first object memory node according to the first metadata, to the first mesh It marks memory node and inquires index data corresponding with target time section.
Determine first object memory node according in first metadata, the first object memory node be stored with The memory node of the corresponding index data of the target time section is inquired corresponding with target time section to first object memory node Index data.
In the step 514, target forward node receives the index data that memory node is sent.
Optionally, memory node sends index number to the target forward node by the address of service of the target forward node According to.
In step 515, target forward node sends index data to cloud storage SDK.
Optionally, which sends index number to cloud storage SDK by the mailing address of cloud storage SDK According to.
In step 516, cloud storage SDK receives the index data that target forward node is sent.
In step 517, cloud storage SDK sends the second acquisition request to the address of service of target forward node.
It include index data in second acquisition request, which includes in the video data for belong to target time section At least one video frame frame storage location.Optionally, further include in second acquisition request cloud storage SDK communicatedly Location.Optionally, when the quantity of video camera is greater than 1, which further includes the corresponding video camera of target time section Encoder ID.
In step 518, target forward node receives the second acquisition request that cloud storage SDK is sent by address of service.
In step 519, target forward node sends the second metadata acquisition request to management node.
Second metadata include the time segment information of video data block and memory node where video data block and Storage location.It optionally, further include the encoder of picture pick-up device in second metadata when the quantity of picture pick-up device is greater than 1 ID.Second metadata is that management node is inquired to obtain at least two memory nodes.
In step 520, management node receives the second metadata acquisition request that target forward node is sent.
In step 521, management node sends the second metadata for belonging to target time section to target forward node.
Time segment information in second metadata including video data block and the memory node where video data block And storage location.It optionally, further include the coding of picture pick-up device in second metadata when the quantity of picture pick-up device is greater than 1 Device ID.Second metadata is that management node inquires to obtain at least two memory nodes.
In step 522, target forward node receives the second metadata for belonging to target time section that management node is sent.
Optionally, management node belongs to target time section to destination address transmission by the address of service of the destination node The second metadata.
In step 523, target forward node determines the second target storage node according to the second metadata.
Target forward node is according to where the time segment information and video data block of the video data in the second metadata Memory node determine destination node.
In step 524, target forward node obtains video data to the second target storage node according to frame storage location.
The frame storage location refers to the offset and deflected length of video frame, target forward node according to frame storage location to Second target storage node sends frame data acquisition request, which carries frame storage location, the second target Memory node is according to frame storage location reading video data and feeds back to target forward node.
In step 525, target forward node sends video data to cloud storage SDK.
In step 526, cloud storage SDK receives the video data that target forward node is sent.
In step 527, video data is sent to cloud application by cloud storage SDK.
In step 528, video data is encapsulated as video flowing by cloud application.
Video data is encapsulated as video flowing by protocol stack by target forward node, optionally, in the present embodiment, target Video data can be encapsulated as HLS video flowing by protocol stack by forward node.
In step 529, cloud application plays back video flowing.
Schematically, as shown in Figure 6A, video data block 1, ancillary data block 1, video data are stored in memory node 1 Metadata 1 and ancillary data metadata 1.Optionally, when the quantity of picture pick-up device is greater than 1, in video data block 1, attached Data block 1, video data metadata 1 and ancillary data metadata 1 are labeled with the encoder ID of picture pick-up device.Such as Fig. 6 A institute Show, the video data of certain time period is preserved in video data block 1, includes a certain in video data in ancillary data block 1 The time of video frame, the offset of the video frame and deflected length, such as: 2017/5/30 8:10,20,20, video data Metadata 1 includes the time segment information of video data block 1 and the memory node location information of video data block 1, by video counts According to metadata can obtain, the video data stored in video data block 1 be 2017/5/30 8:10-8:20 period video counts According to.
Schematically, as shown in Figure 6B, video data block 2, ancillary data block 2, video data are stored in memory node 2 Metadata 2 and ancillary data metadata 2.Optionally, when the quantity of picture pick-up device is greater than 2, in video data block 2, attached Data block 2, video data metadata 2 and ancillary data metadata 2 are labeled with the encoder ID of picture pick-up device.Such as Fig. 6 B institute Show, the video data of certain time period is preserved in video data block 2, includes a certain in video data in ancillary data block 2 The timestamp of video frame, the offset of the video frame and deflected length, such as: 2017/5/30 9:31,20,20, video data Metadata 2 including video data block 2 time segment information and video data block 2 memory node location information, by video The metadata of data can obtain, and the video data stored in video data block 2 is the video of 2017/5/30 8:20-8:30 period Data.
Video flowing between 2017/5/30 8:10-8:30 is played back when user is desired, selects 2017/5/308: After the period of 10-8:30, cloud storage system is by inquiring rope corresponding with 2017/5/30 8:10-8:30 of period first The metadata for drawing data block obtains index data, by Fig. 6 A and Fig. 6 B it is found that corresponding with 2017/5/30 8:10-8:30 of period Index data block be index data block 1 and index data block 2, and index data block 1 is stored in memory node 1, index number It is stored in memory node 2 according to block 2.Then cloud storage system is according to index data block 1 and the time segment information of index data block 2 The metadata of video data corresponding with the period is inquired, the metadata of video data corresponding with the period is video counts According to the metadata 1 of block and the metadata 2 of video data block, according to first number of the metadata 1 of video data block and video data block According to 2 it is found that video data 1 is stored in memory node 1, video data 2 is stored in memory node 2.Cloud storage system obtains video Data block 1 and video data block 2, and the video data in video data block 1 and video data block 2 is sent to terminal.
In conclusion video data acquisition methods provided in an embodiment of the present invention, by by video data and and video The corresponding index data of data disperses to be stored in multiple storage equipment by distributed storage mode, obtains at least two videos Data block and at least two index data blocks, during video playback, by obtaining the first metadata from least two ropes Draw and concurrently obtain index data corresponding with video data in data block, improves the extraction efficiency of index data.
There are at least two memory nodes and one to access in an illustrative implement scene, in the cloud storage system Node is used to complete the step of video data that storage picture pick-up device is sent.Specific implementation is as shown in Figure 7:
Fig. 7 is the flow chart for the video data acquisition methods that another exemplary embodiment of the invention provides.
In step 701, video camera sends video data to access node.
Optionally, preserve the address of the access node of the cloud storage system in video camera, video camera by the address to Access node sends video data.It optionally, further include the volume of video camera in video data when the quantity of video camera is greater than 1 Code device ID different video camera for identification.
In a step 702, access node obtains video data.
In step 703, access node carries out frame to video data and analyzes to obtain index data.
Optionally, frame analysis refers to that access node analyzes each frame of the video data, video data is divided into multiple Video clip, the first frame of each video clip are I frame, and the knots modification based on I frame obtains P frame, wherein P frame can have it is multiple, Such as: the second frame is P1 frame, and third frame is P2 frame etc..
It include the frame storage location of at least one video frame in video data, the frame storage location in the index data Refer to the offset and deflected length of video frame.
In step 704, index data is divided at least two index data blocks by access node.
Optionally, access node by the mode that index data is divided at least two index data blocks include: random division, At least one of fixed value division, the present invention is not limited this.
The mode of random division includes that index data is divided into multiple index data blocks, wherein each index data block Data volume is less than the data value pre-set, and the data volume of different index data blocks can be different；
Fixed value division mode includes that index data is divided into multiple index data blocks according to some fixed data value, In in addition to the last one index data block data volume can be not equal to the fixed data value, the data volume of each index data block It is equal to the fixed data value.
In step 705, video data is divided at least two video data block by access node.
Optionally, access node by the mode that video data is divided at least two video data block include: random division, At least one of fixed value division, the present invention is not limited this.
The mode of random division includes that video data is divided into multiple video data block, wherein each video data block Data volume is less than the data value pre-set, and the data volume of different video data block can be different；
Fixed value division mode includes that video data is divided into multiple video data block according to some fixed data value, In in addition to the last one video data block data volume can be not equal to the fixed data value, the data volume of each video data block It is equal to the fixed data value.
In step 706, by index data block, storage mode is stored at least two storage sections access node in a distributed manner Point in.
Distributed storage, which refers to, is stored in the dispersion of at least two index data blocks at least two different memory nodes. Optionally, distributed storage mode can be, and index data block is sequentially written in i-th of memory node, i+1 storage section Point；Distributed storage mode can also be that at least two memory nodes are randomly assigned each access node and are used to store by management node Index data block, the present invention are not limited this.
In step 707, by video data block, storage mode is stored at least two storage sections access node in a distributed manner Point in.
Distributed storage, which refers to, is stored in the dispersion of at least two video data block at least two different memory nodes. Optionally, distributed storage mode can be, and video data block is sequentially written in i-th of memory node, i+1 storage section Point；Distributed storage mode can also be that at least two memory nodes are randomly assigned each access node and are used to store by management node Video data block, the present invention are not limited this.
Optionally, above-mentioned steps 701 to step 707 be video data and index data storing step, the step 701 to Step 707 in actual operation, is implemented in front of the step 301 or step 303 of embodiment of the method shown in Fig. 3；Above-mentioned steps 706 and step 707 execution sequence for first carrying out step 706 and execute step 707 again, in actual operation, step 706 and The execution sequence of step 707 can also be that first carry out step 707 executes step 706 again, and the present invention is not limited this.
In conclusion the video data acquisition methods that inventive embodiments provide, by by index data piecemeal and by video Video data placement formula after index data and piecemeal after piecemeal is stored at least two memory nodes by deblocking In, in process of playback of video, by concurrently obtaining index data at least two memory nodes, improve mentioning for index data Take efficiency.
In an illustrative implement scene, there are at least two memory nodes, management node in the cloud storage system The step of being used to complete the video data that storage video camera shown in Fig. 7 is sent with access node.Specific implementation is as shown in Figure 8:
Fig. 8 is the flow chart for the video data acquisition methods that another exemplary embodiment of the invention provides.
In step 801, video camera sends video data to access node.
Optionally, preserve the address of the access node of the cloud storage system in video camera, video camera by the address to Access node sends video data.It optionally, further include the volume of video camera in video data when the quantity of video camera is greater than 1 Code device ID different video camera for identification.
In step 802, access node obtains video data.
In step 803, access node carries out frame to video data and analyzes to obtain index data.
Optionally, frame analysis refers to that access node analyzes each frame of the video data, video data is divided into multiple Video clip, the first frame of each video clip are I frame, and the knots modification based on I frame obtains P frame, wherein P frame can have it is multiple, Such as: the second frame is P1 frame, and third frame is P2 frame etc..
It include the frame storage location of at least one video frame in video data, the frame storage location in the index data Refer to the offset and deflected length of video frame.
In step 804, access node sends the first distribution request to management node.
First distribution request is used to request memory node when management node distribution i-th storage.Optionally, access section There is the address of management node in point, access node can send the first distribution request to management node by the address.Optionally, Access node further includes the reception address of the access node into the first distribution request that management node is sent, and management node can lead to It crosses the reception address and returns to message to the access node.
In step 805, management node receives the first distribution request.
In step 806, management node selects memory node when i-th stores from least two memory nodes.
Optionally, when the mode of the memory node when storage of management node selection i-th includes: according to (i-1)-th storage Memory node by (i-1)-th time storage when memory node the latter memory node be selected as i-th storage when storage section Point, memory node when some memory node to be selected as to i-th storage at random, the present invention is not limited this.
In step 807, management node sends the identification information of memory node when i-th stores to access node.
Optionally, preserve the reception address of access node in management node, management node can by the reception address to Access node sends the identification information of memory node when i-th stores.It is used for when the identification information is for identifying i-th storage Store the memory node of index data block.
In step 808, access node receives the identification information of memory node when i-th stores.
In step 809, length in index data is not more than i-th of index data block of predetermined data value by access node Memory node when i-th storage is written.
Optionally, the address that all memory nodes are preserved in access node can be obtained by identification information access node I-th of index data block can be written this by change of address and deposited by the address of the corresponding memory node of the flag information, access node Store up node.
The predetermined data value is the data value pre-set, and index data is divided into index according to the predetermined data value Data block, and the data length of each index data block is not more than the predetermined data value.
In step 810, i=i+1 is enabled.
In step 811, access node sends the first distribution request to management node again.
In step 812, access node sends the second distribution request to management node.
Second distribution request is used to request memory node when management node distribution kth time storage.Optionally, access section There is the address of management node in point, access node can send the second distribution request to management node by the address.Optionally, Access node further includes the reception address of the access node into the second distribution request that management node is sent, and management node can lead to It crosses the reception address and returns to message to the access node.
In step 813, management node receives the second distribution request.
In step 814, management node selects memory node when kth time stores from least two memory nodes.
Optionally, when the mode of the memory node when storage of management node selection kth time includes: according to -1 storage of kth Memory node by kth -1 time storage when storage section when being selected as kth time storage of the latter memory node of memory node Point, memory node when some memory node to be selected as to kth time storage at random, the present invention are not limited this.
In step 815, the identification information of memory node when management node sends kth time storage to access node.
Optionally, preserve the reception address of access node in management node, management node can by the reception address to Access node sends the identification information of memory node when kth time stores.It is used for when the identification information is for identifying i-th storage Store the memory node of video data block.
In step 816, access node receives the identification information of memory node when kth time stores.
In step 817, length in video data is not more than k-th of video data block of predetermined data value by access node Memory node when kth time storage is written.
Optionally, the address that all memory nodes are preserved in access node can be obtained by identification information access node K-th of video data block can be written this by change of address and deposited by the address of the corresponding memory node of the flag information, access node Store up node.
The predetermined data value is the data value pre-set, and video data is divided into video according to the predetermined data value Data block, and the data length of each video data block is not more than the predetermined data value.
In step 818, k=k+1 is enabled.
In step 819, access node sends the second distribution request to management node again.
Wherein, above-mentioned steps 804 to step 811 is the storing process of index data, and step 812 to step 819 is video The storing process of data is illustrated, in practical operation by taking the storing process for first carrying out index data as an example in the present embodiment In, the storing process of video data can also be first carried out, it can also be by each storing process of index data and depositing for video data Storage process is alternately performed, and the present invention is not limited this.
In conclusion the video data acquisition methods that inventive embodiments provide, by by index data piecemeal and by video Video data placement formula after index data and piecemeal after piecemeal is stored at least two memory nodes by deblocking In, in process of playback of video, by concurrently obtaining index data at least two memory nodes, improve mentioning for index data Take efficiency.
Fig. 9 is the block diagram for the terminal that the embodiment of an example of the present invention provides.The terminal includes: processor 920, deposits Reservoir 940, communication interface 960 and display screen 980.
Processor 920 can be single core processor, multi-core processor, embedded chip and the image with computing capability At least one of processor.
Memory 940 is stored with the executable instruction of processor.Schematically, memory 940 is stored with cloud storage system In management node address, by the End of Address can to the management node send solicited message.
Communication interface 960 is the interface that can be communicated between cloud storage system for terminal.Optionally, terminal and cloud are deposited It is attached between storage system by wide area network.
Figure 10 is the block diagram of the structure for the cloud storage system that the embodiment of an example of the present invention provides.
The system comprises: at least one forward node 1010 and at least two memory nodes 1011；
Target forward node 1010, for receiving the first acquisition request of terminal transmission, first acquisition request includes Target time section, the target forward node are one at least one described forward node；
The target forward node 1010 is also used at least two from at least two memory nodes distributed storage In index data block, the index data of the corresponding video data of the target time section is inquired；
The target forward node 1010 is also used to send the index data to the terminal；
The target forward node 1010 is also used to receive the second acquisition request that the terminal is sent, and described second obtains Taking request includes the index data；
The target forward node 1010 is also used at least two from at least two memory nodes distributed storage In video data block, video data corresponding with the index data is obtained；
The target forward node 1010 is also used to send the video data to the terminal.
In an alternative embodiment, the system also includes management nodes 1012；
At least two memory node 1011 is also used to the first metadata of index data block described in distributed storage, The time segment information and the memory node where the index data block that first metadata includes the index data block And storage location；
The target forward node 1010 is also used to send the first metadata acquisition request to the management node 1012, The first metadata acquisition request includes the target time section；
The target forward node 1010 is also used to receive the described of the transmission of management node 1012 and belongs to the target The first metadata of period；
The target forward node is also used to belong to according to the first metadata of the target time section, to described At least two memory nodes inquire index data corresponding with the target time section.
In an alternative embodiment, the target forward node is also used to send second yuan to the management node Data acquisition request, the second metadata acquisition request include the target time section；
The target forward node is also used to receive the described of management node transmission and belongs to the target time section Second metadata；
The target forward node is also used to determine target storage node, the target according to second metadata Memory node is the memory node where the video data；
The target forward node is also used to obtain the video data according to the frame storage location.
In an alternative embodiment, the system also includes management nodes；
The management node, for receiving the node acquisition request of terminal transmission, the node acquisition request is for requesting The management node distributes the target forward node；
The management node is also used to distribute the target forward node from least one described forward node；To institute State the address of service that terminal sends the target forward node；
The target forward node is also used to receive the terminal is sent described first by the address of service and obtains Request.
In an alternative embodiment, the system also includes access nodes 1013；
Access node 1013, for obtaining the video data；
The access node is also used to carry out frame analysis to the video data, obtains the index data；
The access node is also used to for the index data to be divided into at least two index data blocks；
The access node, is also used to that storage mode is stored to described at least two in a distributed manner by the index data block In memory node；
The access node is also used to for the video data to be divided at least two video data block；
The access node, is also used to that storage mode is stored to described at least two in a distributed manner by the video data block In memory node.
In an alternative embodiment, the access node is also used to send the first distribution request, institute to management node Memory node of first distribution request for requesting the management node distribution i-th to store when is stated, wherein i >=1；
The access node is also used to receive the identification information of memory node when i-th storage, the i-th When memory node when storage is the i-th storage that the management node is selected from least two memory node Memory node；
The access node is also used to for length in the index data being not more than i-th of index number of predetermined data value Memory node when i-th storage is written according to block；
The access node is also used to enable i=i+1, and sends first distribution request to the management node again.
In an alternative embodiment, the access node is also used to send the second distribution request, institute to management node Memory node of second distribution request for requesting the management node distribution kth time to store when is stated, wherein k >=1；
The access node is also used to receive the identification information of the memory node when kth time storage, the kth time When memory node when storage is the kth time storage that the management node is selected from least two memory node Memory node；
The access node is also used to for length in the video data being not more than k-th of video counts of predetermined data value The memory node when kth time storage is written according to block；
The access node is also used to enable k=k+1, and sends second distribution request to the management node again The step of.
Figure 11 is the block diagram of the structure for the terminal that another exemplary embodiment of the invention provides.The terminal includes:
Sending module 1101, for sending the first acquisition request to cloud storage system, first acquisition request includes mesh Mark the period；
Receiving module 1102, the index data sent for receiving the cloud storage system, the index datastore have The index of at least one video frame in the corresponding video data of the target time section, the index data is the cloud storage What system was inquired from least two index data blocks of distributed storage；
The sending module 1101, for sending the second acquisition request to the cloud storage system, second acquisition is asked It asks including the index data；
The receiving module 1102, the video data sent for receiving the cloud storage system；The video data is The cloud storage system inquired from least two video data block of distributed storage obtain it is corresponding with the index data Video data；
Package module 1103, for the video data to be encapsulated as video flowing；
Playback module 1104, for being played back to the video flowing.
In an alternative embodiment, the cloud storage system further include: management node, at least two memory nodes and At least one forward node；
Described device, comprising:
Told sending module, for the management node sending node acquisition request, the node acquisition request to be used for The management node is requested to distribute the target forward node, the target forward node is at least one described forward node One；
The receiving module, for receiving the address of service for the target forward node that the management node is sent, institute Stating target forward node is that the management node distributes to the terminal after being selected at least one described forward node 's；
The sending module, comprising:
Sending submodule, for sending first acquisition request to the address of service of the target forward node.
In an alternative embodiment, cloud application and cloud storage tool are installed in the terminal；
Described device, further includes:
Calling module, for calling the cloud storage tool to inquire the index data by the cloud application；
The sending module is also used to send first acquisition to the cloud storage system by the cloud storage tool Request, first acquisition request includes target time section.
It should be understood that video data acquisition device provided by the above embodiment video data obtain when, only more than The division progress of each functional module is stated for example, can according to need and in practical application by above-mentioned function distribution by difference Functional module complete, i.e., the internal structure of equipment is divided into different functional modules, with complete it is described above whole or Person's partial function.In addition, video data acquisition methods provided by the above embodiment and Installation practice belong to same design, tool Body realizes that process is detailed in embodiment of the method, and which is not described herein again.
The serial number of the above embodiments of the invention is only for description, does not represent the advantages or disadvantages of the embodiments.
Those of ordinary skill in the art will appreciate that realizing that all or part of the steps of above-described embodiment can pass through hardware It completes, relevant hardware can also be instructed to complete by program, the program can store in a kind of computer-readable In storage medium, storage medium mentioned above can be read-only memory, disk or CD etc..
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.

Claims (22)

1. a kind of video data acquisition methods, which is characterized in that in cloud storage system, which comprises
The first acquisition request that terminal is sent is received, first acquisition request includes target time section；
From at least two index data blocks of distributed storage, the rope of the corresponding video data of the target time section is inquired Argument evidence；
The index data is sent to the terminal；
The second acquisition request that the terminal is sent is received, second acquisition request includes the index data；
From at least two video data block of distributed storage, video data corresponding with the index data is obtained；
The video data is sent to the terminal.
2. the method according to claim 1, wherein the cloud storage system further include:
At least two memory nodes and at least one forward node, at least two memory node is for described in distributed storage Index data block；
In at least two index data blocks from distributed storage, the corresponding video data of the target time section is inquired Index data, comprising:
Target forward node obtains the index data corresponding with the target time section from least two memory node, The target forward node is one at least one described forward node.
3. according to the method described in claim 2, it is characterized in that, the cloud storage system further include: management node；
At least two memory node is also used to store the first metadata of the index data block, the first metadata packet Include the time segment information of the index data block and memory node and storage location where the index data block；
The target forward node obtains the index corresponding with the target time section at least two memory node Data, comprising:
The target forward node sends the first metadata acquisition request to the management node, and the first metadata acquisition is asked It asks including the target time section；
The target forward node receives first metadata for belonging to the target time section that the management node is sent, First metadata for belonging to the target time section is that the management node is inquired at least two memory node It arrives；
The target forward node determines first object memory node according to first metadata, to described to first object Memory node inquires index data corresponding with the target time section.
4. the method according to claim 1, wherein the cloud storage system further include: at least two storage sections Point and at least one forward node, at least two memory node is for video data block described in distributed storage；
In at least two video data block from distributed storage, video counts corresponding with the index data are inquired According to, comprising:
Target forward node obtains video data corresponding with the index data, the mesh from least two memory node Mark forward node is one at least one described forward node.
5. according to the method described in claim 4, it is characterized in that, the index data includes belonging to the target time section The frame storage location of at least one video frame in video data；
At least two memory node is also used to store the second metadata of the video data block, the second metadata packet Include the time segment information of the video data block and memory node and storage location where the video data block；
The target forward node obtains video data corresponding with the index data, packet from least two memory node It includes:
The target forward node sends the second metadata acquisition request to the management node, and the second metadata acquisition is asked It asks including the target time section；
The target forward node receives second metadata for belonging to the target time section that the management node is sent, It is described to belong to management node described in the second metadata of the target time section and inquire to obtain at least two memory node 's；
The target forward node determines the second target storage node according to second metadata, stores position according to the frame It sets to second target storage node and obtains the video data.
6. method according to claim 2 or 4, which is characterized in that the cloud storage system further include: management node；
Before first acquisition request for receiving terminal transmission, further includes:
The management node receives the node acquisition request that terminal is sent, and the node acquisition request is for requesting the management to save Point distributes the target forward node；
The management node distributes the target forward node from least one described forward node, sends institute to the terminal State the address of service of target forward node；
First acquisition request for receiving terminal and sending, comprising:
The target forward node receives first acquisition request that the terminal is sent by the address of service.
7. according to any method of claim 2 to 4, which is characterized in that the cloud storage system further include: access section Point；
In at least two index data blocks from distributed storage, video counts corresponding with the target time section are inquired According to index data before, further includes:
Access node obtains the video data；
The access node carries out frame analysis to the video data, obtains the index data；
The index data is divided into at least two index data blocks by the access node, by the index data block with Distributed storage mode is stored at least two memory nodes；
The video data is divided at least two video data block by the access node, by the video data block with Distributed storage mode is stored at least two memory nodes.
8. the method according to the description of claim 7 is characterized in that the index data is divided at least by the access node One index data block, by the index data block, storage mode is stored at least two memory nodes in a distributed manner In, comprising:
The access node sends the first distribution request to management node, and first distribution request is for requesting the management to save Point distributes memory node when i-th storage, wherein i >=1；
The access node receives the identification information of the memory node when i-th stores, the storage when i-th stores Node is the memory node when i-th that the management node is selected from least two memory node stores；
The access node will be described in i-th of index data block write-in of the length in the index data no more than predetermined data value Memory node when i-th stores；
I=i+1 is enabled, and re-executes the step of management node receives the first distribution request that the access node is sent.
9. the method according to the description of claim 7 is characterized in that the video data is divided at least by the access node One video data block, by the video data block, storage mode is stored at least two memory nodes in a distributed manner In, comprising:
The access node sends the second distribution request to management node, and second distribution request is for requesting the management to save Point distributes memory node when kth time storage, wherein k >=1；
The access node receives the identification information of the memory node when kth time stores, the storage when kth time stores Node is the memory node when kth time that the management node is selected from least two memory node stores；
The access node will be described in k-th of video data block write-in of the length in the video data no more than predetermined data value Memory node when kth time storage；
K=k+1 is enabled, and re-executes the step of management node receives the second distribution request that the access node is sent.
10. a kind of video data acquisition methods, which is characterized in that the described method includes:
The first acquisition request is sent to cloud storage system, first acquisition request includes target time section；
The index data that the cloud storage system is sent is received, the index datastore has the corresponding view of the target time section Frequency according at least one video frame index, the index data be the cloud storage system from distributed storage at least It is inquired in two index data blocks；
The second acquisition request is sent to the cloud storage system, second acquisition request includes the index data；
Receive the video data that the cloud storage system is sent；The video data is the cloud storage system from distribution Obtained video data corresponding with the index data is inquired at least two video data block of storage；
The video data is encapsulated as video flowing, and the video flowing is played back.
11. according to the method described in claim 10, it is characterized in that, the cloud storage system further include: management node, at least Two memory nodes and at least one forward node；
Before first acquisition request of transmission to cloud storage system, further includes:
To the management node sending node acquisition request, the node acquisition request is for requesting management node distribution institute Target forward node is stated, the target forward node is one at least one described forward node；
The address of service for the target forward node that the management node is sent is received, the target forward node is the pipe Reason node distributes to the terminal after being selected at least one described forward node；
It is described to send the first acquisition request to cloud storage system, comprising:
First acquisition request is sent to the address of service of the target forward node.
12. according to the method described in claim 10, it is characterized in that, the method is by being equipped with cloud application and cloud storage tool Terminal execute；
It is described to send the first acquisition request to cloud storage system, comprising:
The cloud storage tool is called to inquire the index data by the cloud application；
First acquisition request, the first acquisition request packet are sent to the cloud storage system by the cloud storage tool Include target time section.
13. a kind of cloud storage system, which is characterized in that the system comprises: at least one forward node and at least two storages Node；
Target forward node, for receiving the first acquisition request of terminal transmission, first acquisition request includes the object time Section, the target forward node is one at least one described forward node；
The target forward node is also used at least two index datas from at least two memory nodes distributed storage In block, the index data of the corresponding video data of the target time section is inquired；
The target forward node is also used to send the index data to the terminal；
The target forward node is also used to receive the second acquisition request that the terminal is sent, the second acquisition request packet Include the index data；
The target forward node is also used at least two video datas from at least two memory nodes distributed storage In block, video data corresponding with the index data is obtained；
The target forward node is also used to send the video data to the terminal.
14. system according to claim 13, which is characterized in that the system also includes: management node；
At least two memory node, is also used to the first metadata of index data block described in distributed storage, and described first Metadata includes the time segment information of the index data block and memory node and storage position where the index data block It sets；
The target forward node is also used to send the first metadata acquisition request, first yuan of number to the management node It include the target time section according to acquisition request；
The target forward node is also used to receive the described of management node transmission and belongs to the first of the target time section Metadata；
The target forward node is also used to belong to according to the first metadata of the target time section, to it is described at least Two memory nodes inquire index data corresponding with the target time section.
15. system according to claim 13, which is characterized in that the target forward node is also used to the management Node sends the second metadata acquisition request, and the second metadata acquisition request includes the target time section；
The target forward node is also used to receive the described of management node transmission and belongs to the second of the target time section Metadata；
The target forward node is also used to determine target storage node, the target storage according to second metadata Node is the memory node where the video data；
The target forward node is also used to obtain the video data according to the frame storage location.
16. system described in 3 or 15 according to claim 1, which is characterized in that the system also includes: management node；
The management node, for receiving the node acquisition request of terminal transmission, the node acquisition request is described for requesting Management node distributes the target forward node；
The management node is also used to distribute the target forward node from least one described forward node；To the end End sends the address of service of the target forward node；
The target forward node is also used to receive first acquisition that the terminal is sent by the address of service and asks It asks.
17. 3 to 15 any system according to claim 1, which is characterized in that the system also includes: access node；
Access node, for obtaining the video data；
The access node is also used to carry out frame analysis to the video data, obtains the index data；
The access node is also used to for the index data to be divided into at least two index data blocks；
The access node, is also used to that storage mode is stored at least two storages in a distributed manner by the index data block In node；
The access node is also used to for the video data to be divided at least two video data block；
The access node, is also used to that storage mode is stored at least two storages in a distributed manner by the video data block In node.
18. system according to claim 17, which is characterized in that the access node is also used to send to management node First distribution request, first distribution request are used to request the memory node when management node distribution i-th storage, Middle i >=1；
The access node is also used to receive the identification information of memory node when i-th storage, the i-th storage When memory node be the management node selected from least two memory node the i-th storage when deposit Store up node；
The access node is also used to for length in the index data being not more than i-th of index data block of predetermined data value Memory node when i-th storage is written；
The access node is also used to enable i=i+1, and re-executes to the management node and send first distribution request.
19. system according to claim 18, which is characterized in that the access node is also used to send to management node Second distribution request, second distribution request are used to request memory node when management node distribution kth time storage, Middle k >=1；
The access node is also used to receive the identification information of the memory node when kth time storage, the kth time storage When memory node depositing when being the management node kth selected from least two memory node time storage Store up node；
The access node is also used to for length in the video data being not more than k-th of video data block of predetermined data value The memory node when kth time storage is written；
The access node is also used to enable k=k+1, and re-executes to the management node and send second distribution request The step of.
20. a kind of video data acquisition device, which is characterized in that described device includes:
Sending module, for sending the first acquisition request to cloud storage system, first acquisition request includes target time section；
Receiving module, the index data sent for receiving the cloud storage system, the index datastore have the target The index of at least one video frame in period corresponding video data, the index data be the cloud storage system from point It is inquired at least two index data blocks of cloth storage；
The sending module, for sending the second acquisition request to the cloud storage system, second acquisition request includes institute State index data；
The receiving module, the video data sent for receiving the cloud storage system；The video data is described Cloud storage system inquires obtained view corresponding with the index data from least two video data block of distributed storage Frequency evidence；
Package module, for the video data to be encapsulated as video flowing；
Playback module, for being played back to the video flowing.
21. device according to claim 20, which is characterized in that the cloud storage system further include: management node, at least Two memory nodes and at least one forward node；
Described device, comprising:
Told sending module, for the management node sending node acquisition request, the node acquisition request to be for requesting The management node distributes the target forward node, and the target forward node is one at least one described forward node It is a；
The receiving module, for receiving the address of service for the target forward node that the management node is sent, the mesh Marking forward node is that the management node distributes to the terminal after being selected at least one described forward node；
The sending module, comprising:
Sending submodule, for sending first acquisition request to the address of service of the target forward node.
22. device according to claim 21, which is characterized in that be equipped with cloud application and cloud storage work in the terminal Tool；
Described device, further includes:
Calling module, for calling the cloud storage tool to inquire the index data by the cloud application；
The sending module is also used to send described first to the cloud storage system by the cloud storage tool to obtain and ask It asks, first acquisition request includes target time section.
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