CN105049771A - Search engine based video clip retrieval method and device - Google Patents
Search engine based video clip retrieval method and device Download PDFInfo
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- CN105049771A CN105049771A CN201510465480.3A CN201510465480A CN105049771A CN 105049771 A CN105049771 A CN 105049771A CN 201510465480 A CN201510465480 A CN 201510465480A CN 105049771 A CN105049771 A CN 105049771A
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Abstract
The invention relates to a search engine based video clip storage method and storage device, a search engine based video clip retrieval method and retrieval device, and a search engine based video fast forward or fast backward play method. The storage method comprises following steps of acquiring video streams; coding the acquired video streams so as to obtain a plurality of video stream compressed data packages; storing the video stream compressed data packages in different hard disk blocks; establishing a time index table representing the relation between time and each video stream compressed data package; and establishing a head disk index table representing the relation between each video stream compressed data package and the hard disk block. The index establishment and retrieval method using the search engine has good real time performance, and can meet the requirement of millions and millions of video data retrieval.
Description
Technical field
The present invention relates to field of video monitoring, particularly relate to a kind of video segment storage means based on search engine, storage device and a kind of video fragment searching method based on search engine, indexing unit and a kind of based on the video fast forward of search engine or the player method of rewind.
Background technology
In recent years, Video Surveillance Industry obtains and develops fast.In Video Surveillance Industry, the storage and reproduce being worth video is the key connecting underlying storage device and video synthesis management platform.Be worth video and comprise the video pictures resource produced in the valuable video thought in daily viewing process, the video produced in intellectual analysis process and cracking of cases process.Along with system use go deep into, the value video segment of generation gets more and more, current index create a mechanism can not meet multitude of video data especially ten million rank video data retrieval requirement.
Summary of the invention
The object of this invention is to provide a kind of Indexing Mechanism for the retrieval of multitude of video fragment, meet the needs of ten million rank video data retrieval.
For achieving the above object, the invention provides a kind of video segment storage means based on search engine, described storage means comprises the following steps:
Obtain video flowing;
The video flowing of acquisition is carried out coding and obtain several video stream compression packets;
Described video stream compression packet is stored in different hard disk blocks;
Settling time, concordance list, represented the relation between time and each video stream compression packet;
Set up hard disk concordance list, represent the relation between each video stream compression packet and hard disk block.
Preferably, described acquisition video flowing refers to the interface intercepts video segment by video monitoring system, when described video segment exists file header, the video segment obtained is removed video file head, forms the naked stream of video.
Preferably, described acquisition video flowing refers to the intellectual analysis function of opening video monitoring system, carries out the acquisition of video segment.
Preferably, described search engine refers to ElasticSearch search engine.
Present invention also offers a kind of video fragment searching method based on search engine, this video data stores according to above-mentioned storage means, and described search method comprises the following steps:
According to Client-initiated request, determine that user needs time started and the end time of the video segment watched;
According to the information of the first video stream compression packet that the described time started finds the distance time started nearest in time index table, according to the information of the second video stream compression packet that the described end time finds the distance end time nearest in time index table, and find the information of all video stream compression packets between the first video stream compression packet and the second video stream compression packet;
On hard disk concordance list, the hard disk block that above-mentioned all video stream compression packets are corresponding is found according to the information of above-mentioned all video stream compression packets;
All video stream compression packets are taken out from described hard disk block, video decode is carried out from the first video stream compression packet, when being decoded to sart point in time, the video data in this moment is sent to the client impression window of specifying, continue decode and transmit video data to the client impression window of specifying, until the end time point of the second video stream compression packet.
Accordingly, present invention also offers a kind of video segment storage device based on search engine, described storage device comprises:
Video flowing acquiring unit, in order to obtain video flowing;
Coding unit, obtains several video stream compression packets in order to the video flowing of acquisition to be carried out coding;
Control unit, in order to several video stream compression packets are stored in corresponding hard disk block, and settling time concordance list, represent the relation between time and each video stream compression packet, set up hard disk concordance list, represent the relation between each video stream compression packet and hard disk block.
Preferably, the video segment obtained, by the interface intercepts video segment of video monitoring system, when described video segment exists file header, is removed video file head, is formed the naked stream of video by described video flowing acquiring unit.
Preferably, described video flowing acquiring unit, by opening the intellectual analysis function of video monitoring system, carries out the acquisition of video segment.
Accordingly, present invention also offers a kind of video clip retrieval device based on search engine, this video data is stored in above-mentioned storage device, and described indexing unit comprises:
Time determining unit, for according to Client-initiated request, determines that user needs time started and the end time of the video segment watched;
Retrieval unit, for finding the information of the first video stream compression packet nearest apart from the time started in time index table according to the described time started, according to the information of the second video stream compression packet that the described end time finds the distance end time nearest in time index table, and find the information of all video stream compression packets between the first video stream compression packet and the second video stream compression packet, and on hard disk concordance list, find according to the information of above-mentioned all video stream compression packets the hard disk block that above-mentioned all video stream compression packets are corresponding, ,
Performance element, for taking out all video stream compression packets from described hard disk block, video decode is carried out from the first video stream compression packet, when being decoded to sart point in time, the video data in this moment is sent to the client impression window of specifying, continue decode and transmit video data to the client impression window of specifying, until the end time point of the second video stream compression packet.
Present invention also offers that a kind of this video data stores according to above-mentioned storage means based on the video fast forward of search engine or the player method of rewind, described player method comprises the following steps:
According to Client-initiated request, determine some break period that user needs F.F. or falls back on soon;
The information finding distance to put nearest video stream compression packet break period in time index table is put according to described break period;
Information according to above-mentioned video stream compression packet finds the hard disk block that this video stream compression packet is corresponding on hard disk concordance list;
From this hard disk block, take out video stream compression packet, carry out video decode, when be decoded to put break period time, the video data in this moment is sent to the client impression window of specifying;
Continue the information finding next video stream compression packet according to ensuing time point in time index table, and on hard disk concordance list, find corresponding hard disk block according to this video stream compression packet information, from hard disk, block takes out video stream compression packet, carry out video decode and send impression window to show, until after user has new action, stop that video stream compression packet reads, the operation of video decode and video display.
The present invention utilizes search engine to carry out the mode of index foundation and retrieval, and real-time is good, can meet the needs of ten million rank video data retrieval.
Accompanying drawing explanation
Fig. 1 is the flow chart of an embodiment of video segment storage means of the present invention;
Fig. 2 is the flow chart of an embodiment of video segment storage means of the present invention;
Fig. 3 is the structural representation of an embodiment of video segment storage device of the present invention;
Fig. 4 is the flow chart of an embodiment of video fragment searching method of the present invention;
Fig. 5 is the structural representation of an embodiment of video clip retrieval device of the present invention;
Fig. 6 is the flow chart of an embodiment of the player method of video fast forward of the present invention or rewind.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Please refer to Fig. 1, the video segment storage means based on search engine that the embodiment of the present invention provides comprises the following steps:
Step 101, obtains video flowing;
Step 102, carries out coding and obtains several video stream compression packets by the video flowing of acquisition;
Step 103, is stored into described video stream compression packet in different hard disk blocks;
Step 104, settling time, concordance list, represented the relation between time and each video stream compression packet;
Step 105, sets up hard disk concordance list, represents the relation between each video stream compression packet and hard disk block.
Optionally, in some preferred embodiment of storage means of the present invention, described search engine refers to ElasticSearch search engine.
Concrete, in some preferred embodiment of storage means of the present invention, described acquisition video flowing can be the acquisition being carried out video segment by the interface of video monitoring system, because video monitoring system is external system, the interface that can be provided by this system carries out the intercepting of video segment.Wherein, when the video file obtained by interface exists file header, the video segment obtained is removed video file head, forms the naked stream of video.
Optionally, in other preferred embodiments of storage means of the present invention, described acquisition video flowing also can be the intellectual analysis function by opening video monitoring system, intercepts video segment to timing automatic.
Further, in some preferred embodiment of storage means of the present invention, the mode that the described video flowing to obtaining carries out coding acquisition video stream compression packet refers to IPB frame coding method, organizes in the mode of I frame group by video flowing.Wherein each I frame group comprise an I frame with and subsequent multiple P frame and B frame.The preferred embodiment please refer to Fig. 2, specifically comprises the following steps:
Step 201, user is by monitor supervision platform interface intercepts video segment;
Step 202, if the video flowing obtained is document form, removes file header, forms naked stream;
Step 203, by naked for video stream with I frame prescription formula tissue;
Step 204, data management platform determines the memory location of above-mentioned naked stream, and by position and each I frame group correspondence;
Step 205, ElasticSearch concordance list settling time, represents the relation of video time and I frame group;
Step 206, ElasticSearch sets up hard disk concordance list, represents the relation of I frame group and hard disk block.
It should be noted that, two layer indexs set up first are placed in internal memory by ElasticSearch, be persisted to hard disk again, and video elementary stream can be stored in HBase when interior being filled with.
Accordingly, the embodiment of the present invention additionally provides a kind of video segment storage device based on search engine, and please refer to Fig. 3, described storage device comprises:
Video flowing acquiring unit 301, in order to obtain video flowing;
Coding unit 302, obtains several video stream compression packets in order to the video flowing of acquisition to be carried out coding;
Control unit 303, in order to several video stream compression packets are stored in corresponding hard disk block, and settling time concordance list, represent the relation between time and each video stream compression packet, set up hard disk concordance list, represent the relation between each video stream compression packet and hard disk block.
Optionally, in some preferred embodiment of storage device of the present invention, described search engine refers to ElasticSearch search engine.
Concrete, in some preferred embodiment of storage device of the present invention, described acquisition video flowing can be the acquisition being carried out video segment by the interface of video monitoring system, because video monitoring system is external system, the interface that can be provided by this system carries out the intercepting of video segment.Wherein, when the video file obtained by interface exists file header, the video segment obtained is removed video file head, forms the naked stream of video.
Optionally, in other preferred embodiments of storage device of the present invention, described acquisition video flowing also can be the intellectual analysis function by opening video monitoring system, intercepts video segment to timing automatic.
Further, in some preferred embodiment of storage device of the present invention, the mode that the described video flowing to obtaining carries out coding acquisition video stream compression packet refers to IPB frame coding method, organizes in the mode of I frame group by video flowing.Wherein each I frame group comprise an I frame with and subsequent multiple P frame and B frame.
It should be noted that, two layer indexs set up first are placed in internal memory by ElasticSearch, be persisted to hard disk again, and video elementary stream can be stored in HBase when interior being filled with.
The embodiment of the present invention is also corresponding provides a kind of video fragment searching method based on search engine, and this video data stores according to above-mentioned storage means, and described search method comprises the following steps:
According to Client-initiated request, determine that user needs time started and the end time of the video segment watched;
According to the information of the first video stream compression packet that the described time started finds the distance time started nearest in time index table, according to the information of the second video stream compression packet that the described end time finds the distance end time nearest in time index table, and find the information of all video stream compression packets between the first video stream compression packet and the second video stream compression packet;
On hard disk concordance list, the hard disk block that above-mentioned all video stream compression packets are corresponding is found according to the information of above-mentioned all video stream compression packets;
All video stream compression packets are taken out from described hard disk block, video decode is carried out from the first video stream compression packet, when being decoded to sart point in time, the video data in this moment is sent to the client impression window of specifying, continue decode and transmit video data to the client impression window of specifying, until the end time point of the second video stream compression packet.
Preferably, in some preferred embodiment of video fragment searching method of the present invention, described search engine refers to ElasticSearch search engine, described video stream compression packet adopts IPB frame coding method, namely each video stream compression packet is an I frame group, wherein each I frame group comprise an I frame with and subsequent multiple P frame and B frame.The preferred embodiment please refer to Fig. 4, and described video fragment searching method comprises the following steps:
Step 401, according to Client-initiated request, determines that user needs time started and the end time of the video segment watched;
Step 402, ElasticSearch finds the information of the nearest I frame group of distance sart point in time and distance end time to put the information of the 2nd nearest I frame group according to sart point in time in time index table, finds the information of all I frame groups between an I frame group and the 2nd I frame group.
Step 403, the hard disk block that ElasticSearch finds all I frame groups corresponding according to all I frame informations found in hard disk concordance list;
Step 404, takes out video flowing, carries out video decode, after being decoded to sart point in time, the video in this moment is sent to the client impression window of specifying always;
Step 405, after an I frame group of having decoded, then takes out next I frame group and decodes, a to the last I frame group, till being decoded to end time point.
The embodiment of the present invention also provides a kind of video clip retrieval device based on search engine accordingly, and this video data is stored in above-mentioned storage device, please refer to Fig. 5, and described indexing unit comprises:
Time determining unit 501, for according to Client-initiated request, determines that user needs time started and the end time of the video segment watched;
Retrieval unit 502, for finding the information of the first video stream compression packet nearest apart from the time started in time index table according to the described time started, according to the information of the second video stream compression packet that the described end time finds the distance end time nearest in time index table, and find the information of all video stream compression packets between the first video stream compression packet and the second video stream compression packet, and on hard disk concordance list, find according to the information of above-mentioned all video stream compression packets the hard disk block that above-mentioned all video stream compression packets are corresponding, ,
Performance element 503, for taking out all video stream compression packets from described hard disk block, video decode is carried out from the first video stream compression packet, when being decoded to sart point in time, the video data in this moment is sent to the client impression window of specifying, continue decode and transmit video data to the client impression window of specifying, until the end time point of the second video stream compression packet.
Preferably, in some preferred embodiment of video clip retrieval device of the present invention, described search engine refers to ElasticSearch search engine, described video stream compression packet adopts IPB frame coding method, namely each video stream compression packet is an I frame group, wherein each I frame group comprise an I frame with and subsequent multiple P frame and B frame.
The embodiment of the present invention additionally provides that a kind of this video data stores according to above-mentioned storage means based on the video fast forward of search engine or the player method of rewind, and described player method comprises the following steps:
According to Client-initiated request, determine some break period that user needs F.F. or falls back on soon;
The information finding distance to put nearest video stream compression packet break period in time index table is put according to described break period;
Information according to above-mentioned video stream compression packet finds the hard disk block that this video stream compression packet is corresponding on hard disk concordance list;
From this hard disk block, take out video stream compression packet, carry out video decode, when be decoded to put break period time, the video data in this moment is sent to the client impression window of specifying;
Continue the information finding next video stream compression packet according to ensuing time point in time index table, and on hard disk concordance list, find corresponding hard disk block according to this video stream compression packet information, from hard disk, block takes out video stream compression packet, carries out video decode and send impression window to show;
Proceed the operation that the reading of video stream compression packet, video decode and video show, until user has new action.
Preferably, in some preferred embodiment of the player method of video fast forward of the present invention or rewind, described search engine refers to ElasticSearch search engine, described video stream compression packet adopts IPB frame coding method, namely each video stream compression packet is an I frame group, wherein each I frame group comprise an I frame with and subsequent multiple P frame and B frame.The preferred embodiment please refer to Fig. 6, and the player method of described video fast forward or rewind comprises the following steps:
Step 601, when user needs F.F. or rewind video, determines some break period that user needs F.F. or falls back on soon;
Step 602, ElasticSearch finds distance to put the information of nearest I frame group break period according to some break period in time index table;
Step 603, the hard disk block that ElasticSearch finds this I frame group corresponding according to the I frame group information found in hard disk concordance list;
Step 604, takes out video flowing from hard disk block, carries out video decode, after being decoded to some break period, the video in this moment being sent to the client of specifying and showing;
Step 605, ElasticSearch finds the information of next I frame group according to ensuing time point in time index table;
Step 606, the hard disk block that ElasticSearch finds this I frame group corresponding according to the next I frame group information found in hard disk concordance list, takes out video flowing, carries out video decode, until after user has new action, stops getting frame and decoding.
The present invention can be used for the retrieval of multitude of video fragment, has ensured the needs of ten million rank data retrieval, and effective guarantee is in cracking of cases process, and can to transfer valuable video segment be fast that case is given a clue.
Claims (10)
1. based on a video segment storage means for search engine, for video monitoring system, it is characterized in that, described storage means comprises the following steps:
Obtain video flowing;
The video flowing of acquisition is carried out coding and obtain several video stream compression packets;
Described video stream compression packet is stored in different hard disk blocks;
Settling time, concordance list, represented the relation between time and each video stream compression packet;
Set up hard disk concordance list, represent the relation between each video stream compression packet and hard disk block.
2. storage means according to claim 1, it is characterized in that, described acquisition video flowing refers to the interface intercepts video segment by video monitoring system, when described video segment exists file header, the video segment obtained is removed video file head, forms the naked stream of video.
3. storage means according to claim 1, is characterized in that, described acquisition video flowing refers to the intellectual analysis function of opening video monitoring system, carries out the acquisition of video segment.
4. storage means according to claim 1, is characterized in that, described search engine is ElasticSearch search engine.
5., based on a video fragment searching method for search engine, the storage means of this video data according to any one of claim 1-4 stores, and it is characterized in that, described search method comprises the following steps:
According to Client-initiated request, determine that user needs time started and the end time of the video segment watched;
According to the information of the first video stream compression packet that the described time started finds the distance time started nearest in time index table, according to the information of the second video stream compression packet that the described end time finds the distance end time nearest in time index table, and find the information of all video stream compression packets between the first video stream compression packet and the second video stream compression packet;
On hard disk concordance list, the hard disk block that above-mentioned all video stream compression packets are corresponding is found according to the information of above-mentioned all video stream compression packets;
All video stream compression packets are taken out from described hard disk block, video decode is carried out from the first video stream compression packet, when being decoded to sart point in time, the video data in this moment is sent to the client impression window of specifying, continue decode and transmit video data to the client impression window of specifying, until the end time point of the second video stream compression packet.
6. based on a video segment storage device for search engine, for video monitoring system, it is characterized in that, described storage device comprises:
Video flowing acquiring unit, in order to obtain video flowing;
Coding unit, obtains several video stream compression packets in order to the video flowing of acquisition to be carried out coding;
Control unit, in order to several video stream compression packets are stored in corresponding hard disk block, and settling time concordance list, represent the relation between time and each video stream compression packet, set up hard disk concordance list, represent the relation between each video stream compression packet and hard disk block.
7. storage device according to claim 6, it is characterized in that, described video flowing acquiring unit passes through the interface intercepts video segment of video monitoring system, when described video segment exists file header, the video segment obtained is removed video file head, forms the naked stream of video.
8. storage device according to claim 6, is characterized in that, described video flowing acquiring unit, by opening the intellectual analysis function of video monitoring system, carries out the acquisition of video segment.
9. based on a video clip retrieval device for search engine, this video data is stored in the storage device described in any one of claim 6-8, it is characterized in that, described indexing unit comprises:
Time determining unit, for according to Client-initiated request, determines that user needs time started and the end time of the video segment watched;
Retrieval unit, for finding the information of the first video stream compression packet nearest apart from the time started in time index table according to the described time started, according to the information of the second video stream compression packet that the described end time finds the distance end time nearest in time index table, and find the information of all video stream compression packets between the first video stream compression packet and the second video stream compression packet, and on hard disk concordance list, find according to the information of above-mentioned all video stream compression packets the hard disk block that above-mentioned all video stream compression packets are corresponding, ,
Performance element, for taking out all video stream compression packets from described hard disk block, video decode is carried out from the first video stream compression packet, when being decoded to sart point in time, the video data in this moment is sent to the client impression window of specifying, continue decode and transmit video data to the client impression window of specifying, until the end time point of the second video stream compression packet.
10., based on the video fast forward of search engine or a player method for rewind, the storage means of this video data according to any one of claim 1-4 stores, and it is characterized in that, described player method comprises the following steps:
According to Client-initiated request, determine some break period that user needs F.F. or falls back on soon;
The information finding distance to put nearest video stream compression packet break period in time index table is put according to described break period;
Information according to above-mentioned video stream compression packet finds the hard disk block that this video stream compression packet is corresponding on hard disk concordance list;
From this hard disk block, take out video stream compression packet, carry out video decode, when be decoded to put break period time, the video data in this moment is sent to the client impression window of specifying;
Continue the information finding next video stream compression packet according to ensuing time point in time index table, and on hard disk concordance list, find corresponding hard disk block according to this video stream compression packet information, from hard disk, block takes out video stream compression packet, carry out video decode and send impression window to show, until after user has new action, stop that video stream compression packet reads, the operation of video decode and video display.
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Application publication date: 20151111 |