CN109547516B - Method and device for playing video - Google Patents
Method and device for playing video Download PDFInfo
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- CN109547516B CN109547516B CN201710867895.2A CN201710867895A CN109547516B CN 109547516 B CN109547516 B CN 109547516B CN 201710867895 A CN201710867895 A CN 201710867895A CN 109547516 B CN109547516 B CN 109547516B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/06—Protocols specially adapted for file transfer, e.g. file transfer protocol [FTP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/08—Protocols specially adapted for terminal emulation, e.g. Telnet
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- 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
- H04N21/23109—Content storage operation, e.g. caching movies for short term storage, replicating data over plural servers, prioritizing data for deletion by placing content in organized collections, e.g. EPG data repository
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- 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
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs
- H04N21/23406—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving management of server-side video buffer
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- 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]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/443—OS processes, e.g. booting an STB, implementing a Java virtual machine in an STB or power management in an STB
- H04N21/4435—Memory management
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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
Abstract
The disclosure relates to a method and a device for playing videos, and belongs to the technical field of electronics. The method comprises the following steps: receiving video data uploaded by a monitor in real time in the recording process, storing the video data with the preset data volume into a video block when receiving the video data with the preset data volume, and recording the corresponding recording time of the video block; when a video query instruction which is sent by target equipment through a FUSE file system client program and carries time period information is received, determining a video block of which the corresponding recording time is matched with the time period information; and sending the determined video blocks to the target equipment for playing according to the time sequence. Each time a short period of video data is recorded, it may be stored as a video chunk in the server. Therefore, the real-time performance of storing, acquiring and querying the video data is high.
Description
Technical Field
The present disclosure relates to the field of electronic technologies, and in particular, to a method and an apparatus for playing a video.
Background
In the security field, security personnel may install monitors at various locations, and video data collected by several monitors may be stored in one storage device corresponding to the several monitors. With the wider and wider distribution area, the number of monitors to be installed is more and more, a cloud storage technology is introduced, and video data collected by all the monitors can be stored in the cloud end through the cloud storage technology.
In the prior art, the monitor captures the video data for a day and temporarily stores it in a memory in the monitor. And when the current day is a preset time point, triggering to send the video data collected on the day and the collection time to the cloud. When a user needs to check the monitoring video of a certain day, the monitoring video of the day can be searched in the cloud.
However, in the above monitoring video viewing manner, only when the monitor records the video data of the previous day, the user can view the monitoring video recorded in the previous day in the cloud in the next day, and the real-time performance is very low.
Disclosure of Invention
In order to overcome the problem of low real-time performance in the related art, the present disclosure provides the following technical solutions:
according to a first aspect of the embodiments of the present disclosure, there is provided a method of playing a video, the method including:
receiving video data uploaded by a monitor in real time in the recording process, storing the video data with a preset data volume into a video block when the video data with the preset data volume is received, and recording the recording time corresponding to the video block;
when detecting that a target device is remotely logged in to a local machine, mounting a user space FUSE file system into the target device;
when a video query instruction which is sent by the target equipment through the FUSE file system and carries time period information is received, determining a video block of which the corresponding recording time is matched with the time period information;
and sending the determined video block to the target equipment for playing according to the time sequence.
Optionally, the method further comprises:
when the video data with the preset data volume is stored as a video block, recording a monitor identifier corresponding to the video block;
when a video query instruction carrying time period information and sent by target equipment is received, determining a video block of which the corresponding recording time is matched with the time period information, wherein the video query instruction comprises:
when a video query instruction which is sent by target equipment and carries a target monitor identifier and time period information is received, determining a video block of which the corresponding recording time is matched with the time period information in the video block corresponding to the target monitor identifier.
Optionally, after the mounting the FUSE file system into the target device, the method further includes:
according to the stored recording time of each video block, sending time period information to be selected to the target equipment; the time period information carried in the video query instruction is the time period information selected by the target device in the time period information to be selected through the selection instruction.
Optionally, each recording time includes at least one level of time period information, where the at least one level of time period information includes one or more of year information, month information, and day information;
the sending the time period information to be selected to the target device according to the stored recording time of each video block includes:
determining all the time period information with the highest level corresponding to the recording time of each stored video block, and sending the time period information with the highest level to the target equipment as the time period information to be selected;
when a video query instruction which is sent by the target device through the FUSE file system and carries time period information is received, determining a video block of which the corresponding recording time is matched with the time period information, wherein the determining comprises the following steps:
when a video query instruction carrying time period information and sent by the target device through the FUSE file system is received, judging whether the time period information carried in the video query instruction is time period information of the lowest level;
if the time period information carried in the video query instruction is not the time period information of the lowest level, determining a first level to which the time period information carried in the video query instruction belongs, selecting recording time matched with the time period information carried in the video query instruction from the recording time of each stored video block, determining all time period information of a second level corresponding to the selected recording time, and sending the time period information of the second level to the target equipment as the time period information to be selected, wherein the second level is lower than the first level by one level;
and if the time period information carried in the video query instruction is the time period information of the lowest level, determining a video block of which the corresponding recording time is matched with the time period information carried in the video query instruction.
Optionally, the sending the determined video block to the target device for playing according to a time sequence includes:
based on the time sequence, calling the video data in the determined video block into a cache, wherein the data volume of the video data which is called into the cache each time is a preset first data volume;
and after the video data with the first data volume is called into the cache every time, the video data in the cache is sent to the target equipment in a sub-packet mode according to a preset second data volume.
According to a second aspect of the embodiments of the present disclosure, there is provided an apparatus for playing a video, the apparatus including:
the receiving module is used for receiving video data uploaded by a monitor in real time in the recording process, storing the video data with preset data volume as a video block when the video data with preset data volume is received, and recording the recording time corresponding to the video block;
the mounting module is used for mounting the user space FUSE file system into the target equipment when the target equipment is detected to remotely log in the local machine;
the determining module is used for determining a video block of which the corresponding recording time is matched with the time period information when receiving a video query instruction which is sent by the target equipment through the FUSE file system and carries the time period information;
and the first sending module is used for sending the determined video blocks to the target equipment for playing according to the time sequence.
Optionally, the apparatus further comprises:
the recording module is used for recording a monitor identifier corresponding to the video block when the video data with the preset data volume is stored as the video block;
the determining module is used for determining a video block of which the corresponding recording time is matched with the time period information in the video block corresponding to the target monitor identifier when receiving a video query instruction which is sent by target equipment and carries the target monitor identifier and the time period information.
Optionally, after the mount module mounts the FUSE file system into the target device, the mount module further includes:
the second sending module is used for sending time period information to be selected to the target equipment according to the stored recording time of each video block; the time period information carried in the video query instruction is the time period information selected by the target device in the time period information to be selected through the selection instruction.
Optionally, each recording time includes at least one level of time period information, where the at least one level of time period information includes one or more of year information, month information, and day information;
the second sending module is configured to determine all highest-level time period information corresponding to the recording time of each stored video block, and send the highest-level time period information as time period information to be selected to the target device;
the determining module comprises:
the judgment unit is used for judging whether the time period information carried in the video query instruction is the time period information of the lowest level or not when the video query instruction carrying the time period information and sent by the target device through the FUSE file system is received;
a first determining unit, configured to determine a first level to which time period information carried in the video query instruction belongs when the time period information carried in the video query instruction is not the time period information of the lowest level, select, from the stored recording times of the video blocks, a recording time that matches the time period information carried in the video query instruction, determine all second-level time period information corresponding to the selected recording time, and send, to the target device, the second-level time period information as time period information to be selected, where the second level is lower than the first level by one level;
and a second determining unit, configured to determine, when the time period information carried in the video query instruction is the time period information of the lowest level, a video block whose corresponding recording time matches the time period information carried in the video query instruction.
Optionally, the first sending module comprises:
the call-in unit is used for calling the video data in the determined video block into a cache based on the time sequence, and the data volume of the video data which is called into the cache each time is a preset first data volume;
and the sending unit is used for subpackaging and sending the video data in the cache to the target equipment according to a preset second data volume after calling the video data of the first data volume into the cache every time.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:
in the embodiment of the disclosure, video data uploaded by a monitor in real time in the recording process is received, and when the video data with the preset data volume is received, the video data with the preset data volume is stored as a video block and the recording time corresponding to the video block is recorded; when a video query instruction which is sent by target equipment through a FUSE file system and carries time period information is received, determining a video block of which the corresponding recording time is matched with the time period information; and sending the determined video blocks to the target equipment for playing according to the time sequence. Since the video data of the preset data amount is stored as a video block every time the video data of the preset data amount is received, and the preset data amount is generally a relatively small number, the video data of a short time can be stored as a video block in the server every time the video data of the short time is recorded. Therefore, the real-time performance of storing, acquiring and querying the video data is high.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure. In the drawings:
FIG. 1 is a flow diagram illustrating a method of playing a video in accordance with an exemplary embodiment;
FIG. 2 is a schematic diagram illustrating mapping of video blocks into files in accordance with an exemplary embodiment;
FIG. 3 is a schematic diagram illustrating a target device interacting with a server in accordance with an illustrative embodiment;
FIG. 4 is a flowchart illustration of a target device interacting with a server, according to an exemplary embodiment;
FIG. 5 is a flowchart illustration of a target device interacting with a server, according to an example embodiment;
FIG. 6 is a flowchart illustration of a target device interacting with a server, according to an example embodiment;
fig. 7 is a schematic structural diagram illustrating an apparatus for playing a video according to an exemplary embodiment;
fig. 8 is a schematic diagram illustrating a configuration of a server according to an example embodiment.
With the foregoing drawings in mind, certain embodiments of the disclosure have been shown and described in more detail below. These drawings and written description are not intended to limit the scope of the disclosed concepts in any way, but rather to illustrate the concepts of the disclosure to those skilled in the art by reference to specific embodiments.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the disclosure, as detailed in the appended claims.
The embodiment of the invention provides a method for playing a video clip, which can be realized by matching a server, a monitor and a terminal.
The server may include a processor, memory, etc. The processor, which may be a CPU (Central Processing Unit), may be configured to mount the FUSE file system that needs to be mounted in the target device into the target device, that is, the terminal, when it is detected that the target device is remotely logged into the local device. The Memory may be a RAM (Random Access Memory), a Flash Memory, or the like, and may be configured to store received data, data required by the processing procedure, data generated during the processing procedure, or the like, such as video data.
The server may also include a transceiver or the like. The transceiver may be configured to perform data transmission with a terminal and a monitor, for example, may receive video data sent by the monitor, and the transceiver may include a bluetooth component, a WiFi (Wireless-Fidelity, Wireless Fidelity) component, an antenna, a matching circuit, a modem, and the like.
The server may have installed therein a system program and a FUSE file system running in the server.
In the process of applying the technical scheme provided by this embodiment, the server may be connected to a plurality of monitors to receive video data uploaded by the monitors. The server can be connected with the terminal, and when a user needs to check a certain video clip in the server, the user can log in the server for checking in a remote login mode. Of course, the server may not be only one or several servers, but also be deployed as a server cluster, so that the server cluster can serve as a cloud to provide relevant services for the monitor and the terminal.
An exemplary embodiment of the present disclosure provides a method for playing a video, and as shown in fig. 1, a processing flow of the method may include the following steps:
step S110, receiving video data uploaded by the monitor in real time during the recording process, storing the video data with the preset data amount as a video block whenever the video data with the preset data amount is received, and recording the recording time corresponding to the video block.
In practice, the monitor recording video data is not a brief process, but a continuous recording process. New video data is recorded every hour, minute, and second every day. How to store and manage such continuous, continuously recorded video data becomes a difficult problem. In this embodiment, first, the video data recorded by the monitor may be uploaded to the server in real time, and the server receives the video data uploaded by the monitor in real time during the recording process. In this process, the monitor is not generally a single monitor, but may actually be multiple monitors of a large scale. For convenience of description, the process of capturing video data and storing the video data by only one monitor is described, and the process of capturing video data and storing the video data by other monitors is similar to the process. In the server, whenever video data of a preset data amount is received, for example, whenever video data of 64M size is received, the video data of 64M size is stored as one video block. Meanwhile, the recording time corresponding to the video block can be recorded, so that the recording time of each video block can be known when the video blocks are inquired in the following process. In addition to recording the time of the video block, other information of the video block may be recorded, such as a monitor identification of a monitor that recorded the video block.
And step S120, when the remote login of the target device to the local device is detected, mounting the FUSE file system into the target device.
In implementation, when a user needs to view a video stored in a server, the user can log in to the server in a target device, namely a terminal, by means of remote login. The remote login mode includes but is not limited to an smb mode, an nfs mode and an ftp mode. Specifically, through an input window of a user name and a password as provided in the ftp manner in the target device, the user can input the user name and the password for logging in to the server storing the video data into the window. If the user name and password entered by the user are correct, successful login of the target device to the server can be detected. Then, the server can mount the FUSE file system which is pre-stored by the server and needs to be mounted in the target device into the target device.
Step S130, when a video query instruction carrying time period information and sent by the target device through the FUSE file system is received, determining a video block whose corresponding recording time matches the time period information.
In implementation, after the FUSE file system to be mounted in the target device is mounted in the target device, the FUSE file system mounted in the target device may cooperate with the FUSE file system running in the server to perform video block query. Specifically, the user may send a video query instruction carrying the time period information to the server through the FUSE file system mounted in the target device, and the FUSE file system running in the server may analyze the video query instruction carrying the time period information and determine the video block whose corresponding recording time matches the time period information. It should be noted that the video data may be considered as video data recorded by all monitors stored in the server, and the video block may be considered as a basic unit of the video data. When the target device sends a video query instruction carrying time period information to the server, it can be considered that the user wants to view videos in a certain time period. And the specific time period that the user wants to view the video in which time period can be determined by analyzing the video query instruction carrying the time period information. Since the server stores the video data in the memory by taking the video block as a unit, the video block inquired for a certain time period is the video block inquired for the time period. Since each video block has a recording time corresponding to the video block, if the time period information is known, it can be determined which video blocks are included in the time period corresponding to the time period information. For example, for 64M video blocks, if the fixed recording bitrate is not changed, every 64M video block can accommodate recording video data of 2 minutes length. If the user wants to view the video between 2017, 9, 10, 22:00:00 and 2017, 9, 10, 22:10:00, a file composed of 5 64M video blocks corresponding to the time period information can be called to the user for viewing, as shown in fig. 2, the left side is the start time, the right side is the end time, and the middle is the video block, wherein the 5 64M video blocks corresponding to the time period information are shown. For a file to which these 5 video blocks are mapped, its file name may be 20170910T220000_20170910T221000.mp 4.
And step S140, sending the determined video blocks to the target device for playing according to the time sequence.
In implementation, after the video blocks are determined, the determined result may be displayed in the FUSE file system mounted in the target device, and if the user needs to play the video blocks, the file mapped to the video blocks may be dragged into the player, at which time the server may send the determined video blocks to the target device in a time sequence for playing.
Optionally, the method of this embodiment may further include: when video data with a preset data volume is stored as a video block, recording a monitor identifier corresponding to the video block; step S130 may include: when a video query instruction which is sent by target equipment and carries a target monitor identifier and time period information is received, determining a video block of which the corresponding recording time is matched with the time period information in the video block corresponding to the target monitor identifier.
In implementation, the server generally serves as a server cluster, i.e., a cloud, and the number of monitors that can be accessed by the cloud is huge, so that the server stores the received video block and the recording time corresponding to the video block, and also stores the monitor identifier of the monitor that records the video block corresponding to the video block. At this time, the video query instruction sent by the target device may carry, in addition to the time period information, a target monitor identifier, that is, a video data that indicates which monitor wants to view and record in which time period. When receiving a video query instruction sent by a target device, a server may determine a video block, of which the corresponding recording time matches the time period information, in the video block corresponding to the target monitor identifier.
In this embodiment, only a simple way to query for video is provided, and a more specific way to query for video is provided below. Optionally, after the FUSE file system that needs to be mounted in the target device is mounted in the target device, the method further includes: according to the stored recording time of each video block, sending time period information to be selected to target equipment; the time period information carried in the video query instruction is the time period information selected by the target device in the time period information to be selected through the selection instruction.
In implementation, after the FUSE file system required to be mounted in the target device is mounted in the target device, the server may provide the corresponding video query service to the target device. As shown in fig. 3, the monitor at the front end uploads video data to the server, and the server can segment the video data into video blocks and generate time period information to be selected, such as directory information, according to the recording time of the video blocks. After sending the directory information to the target device, the target device may display the directory information in the FUSE file system mounted in the target device. For example, the directory information is sent to user a or user B.
After the user views the directory information, if there is a video that the user wants to view, the user can click a target directory identifier in the directory information, at this time, the target device triggers generation of a video query instruction, and the time period information carried in the video query instruction is the target directory identifier selected in the directory information through the selection instruction. It should be noted that, unlike providing a video query window to allow a user to input a video that the user wants to view, in this embodiment, the user is allowed to know the video data stored in the server as a whole by providing the time period information to be selected, and then the time period information corresponding to the video that needs to be queried can be selected by selecting the time period information to be selected.
Alternatively, when the directory information has a hierarchical relationship, that is, more than a single layer directory, a secondary directory is included under the top directory, a secondary directory may also include a secondary directory, and the like, the video may be queried by the following method. Correspondingly, each recording time comprises at least one level of time period information, and the at least one level of time period information comprises one or more of year information, month information and day information. The year information, the month information and the day information can be freely combined, for example, combined into the year-month information and the month-day information. The year and month information such as 1701, 1702, 1708 can represent month 1 of 17 years, month 2 of 17 years, and month 8 of 17 years.
The step of sending the time period information to be selected to the target device according to the stored recording time of each video block may include: and determining all the highest-level time period information corresponding to the recording time of each stored video block, and sending the highest-level time period information serving as the time period information to be selected to the target equipment.
In implementation, when a user logs in to the server in a target device by means of remote login, the server may mount the FUSE file system that needs to be mounted in the target device to the target device. After the FUSE file system required to be mounted in the target device is mounted, the FUSE file system running in the server can call up the recording time of each stored video block through a special interface. Then, after calling the stored recording time of each video chunk to the FUSE file system running in the server, the FUSE file system running in the server may generate the highest level time period information based on the stored recording time of each video chunk. The highest level of time period information may be the default directory layer that the user is first presented to when the user logs into the server.
Specifically, for example, there are 5 video blocks in the server, and their recording times are 20170122, 20160507, 20160405, 20170509 and 20160825, respectively, that is, they are recorded in 2017, month 1, day 22, 2016, month 5, year 4, month 5, year2017, month 9 and year 8, month 25, respectively. When the recording time is stored, the recording year information, the recording month information, and the recording day information of each video block may be stored separately. As shown in fig. 4, the target device logs in the server, the FUSE file system running in the server acquires the year information of the 5 video blocks from the memory through the preset interface, and the memory internally queries the year information of 2017, 2016, 2017 and 2016. The memory returns the query result to the FUSE file system running in the server, and the FUSE file system running in the server performs the same item combination on the year information based on internal logic to obtain that the 5 video blocks are recorded in 2017 and 2016. Therefore, when the time period information of the highest level is the year information, the top directory generated based on the year information includes 2017 and 2016. At this time, the generated top directory may be sent to the target device, and the top directory is presented to the user through the FUSE file system mounted in the target device. After the user views the top directory, the user can select the year of the video that the user wants to view. It should be noted that the above examples are only illustrative. In practical applications, the number of video blocks stored in the server is more than 5, and is not exhaustive for convenience of description. In practical applications, if the recording time is from 2016 to 2017 for 5 months, the directory generated is at least the directory that exists every month in succession between 2016 to 2017 for 5 months.
When a video query instruction carrying time period information and sent by a target device through a FUSE file system mounted in the target device is received, the step of determining a video block of which the corresponding recording time matches the time period information may include: when a video query instruction carrying time period information and sent by target equipment through a FUSE file system mounted in the target equipment is received, whether the time period information carried in the video query instruction is the time period information of the lowest level or not is judged.
In practice, after the user sees the top level directory or other level directories, the directory to be entered can be selected to continue querying videos under the directory. When a user clicks any one level of directory, the target device sends a video query instruction carrying time period information through a FUSE file system mounted in the target device. The time period information is the time period information of the directory clicked by the user. For example, when the user clicks from the top directory of 2017 to enter the secondary directory of the top directory, a video query instruction carrying "YEAR 2017" is generated, and the instruction is sent to the server. When the server receives a video query instruction which is sent by target equipment through a FUSE file system mounted in the target equipment and carries time period information, whether the time period information carried in the video query instruction is the time period information of the lowest level or not is judged. In this embodiment, the time period information of the lowest level may be day information, that is, when the user selects from the top-level directory one level at a time until the bottom-level directory is opened, it may be determined that the time period information carried in the video query instruction is the time period information of the lowest level. And if the time period information carried in the video query instruction is the time period information of the lowest level, the user is considered to find the required video. If the time period information is "YEAR 2017", it may be determined that the time period information is not the time period information of the lowest level.
If the time period information carried in the video query instruction is not the time period information of the lowest level, determining a first level to which the time period information carried in the video query instruction belongs, selecting recording time matched with the time period information carried in the video query instruction from the stored recording time of each video block, determining all time period information of a second level corresponding to the selected recording time, and sending the time period information of the second level to target equipment as the time period information to be selected, wherein the second level is lower than the first level by one level.
In implementation, if the time period information carried in the video query instruction is not the lowest-level time period information, it is considered that the user has not found the video that the user wants to find, and the time period information that is not the lowest-level time period information also includes the lower-level time period information on the basis. For example, when the top directory generated according to the year information includes 2017 and 2016, the top directory is exposed to the user through the FUSE file system mounted in the target device. As shown in fig. 5, after the user views the top directory, the user can select the year in which the user wants to view the video, for example, 2017. The target equipment sends a video query instruction carrying the YEAR2017 to the server, and when the server receives the video query instruction carrying the YEAR2017, whether the YEAR2017 is the time period information of the lowest level is judged. "YEAR 2017" belongs to the YEAR information, under which there are month information, day information, and the like, "YEAR 2017" is not the lowest level of time period information. And selecting the recording time matched with the time period information carried in the video query instruction from the stored recording time of each video block. At this time, the FUSE file system running in the server sends an instruction to the memory to select a recording time matching "YEAR 2017", that is, to select month information in 2017. The memory internally looks up the month information and returns the query results to the FUSE file system running in the server. If there are 5 video chunks in the server that were recorded at 20170122, 20160507, 20160405, 20170509, 20160825, i.e., 22 days 1/2017, 5/2016, 7/2016, 5/2017, 9/2017, and 25/2016, respectively, the FUSE file system running in the server merges the month information of the 5 video chunks into 1/5/2017 based on internal logic. And determining all the second-level time period information corresponding to the selected recording time, and sending the second-level time period information to the target equipment as the time period information to be selected. The information of the month of which selection is determined may be transmitted to the target device as information of the time period to be selected, having let the user decide which month of 2017 to select next.
And if the time period information carried in the video query instruction is the time period information of the lowest level, determining the video block of which the corresponding recording time is matched with the time period information carried in the video query instruction.
There are no other lower-level directories under the lowest-level time period information, and in the file display window, the file corresponding to the lowest-level time period information can be displayed to the user. For example, the lowest level of time period information is 20170509, i.e., 5/9/2017, when the user chooses to enter the catalog, the user is deemed to want to view videos on the day of 5/9/2017. At this time, the video file names of camera1_20170509T000000_20170509T003000.mp4, camera1_20170509T003000_20170509T010000.mp4 … … camera1_20170509T233000_20170509T240000.mp4 may be in the directory. The video blocks can be synthesized in half-hour units, that is, the video corresponding to each mp4 file is half-hour video. For the file name, "camera 1" indicates a monitor flag, "20170509T 000000 — 20170509T 003000" indicates that the beginning of the early morning of 5-month 9-year 2017 starts to the end of the early half-hour of the early morning of 5-month 9-year 2017, and so on, and the meaning of all names is not to be construed here.
In addition to the time period information with the day as the lowest level, it is needless to say that the time period information with the hour, minute or even second in the day may be the lowest level, and this may be arbitrarily adjusted as necessary.
Alternatively, the number of video blocks is huge in practical application. In order to facilitate the query, some description information may be added to the video blocks to distinguish the video blocks. For example, a monitor identification is added to a video block to identify which monitor recorded the video block. At this time, the top directory may be set not to the top directory generated from the year information but to the top directory generated from the monitor identification. I.e. first let the user choose which monitor to view the video recorded. Alternatively, several monitors may be used as a video pool, and a video block recorded by a monitor in a video pool corresponds to the video pool identifier of the video pool. Thus, the top level directory can be generated according to the video pool identification.
In implementation, when the user selects the lowest level of time period information, for example, selects the time period of 5/9/2017, the video file names of 20170509.mp4 mapped based on the recording time of the video block may be in the directory. When the user drags 20170509.mp4 to the player for playing on the target device, the server may send the determined video blocks to the target device for playing in a time sequence. For example, in 2017, a total of 2 hours are recorded in 5, 9 and 9 days, and 60 video blocks exist in 2 hours, the 60 video blocks are sent to the target device as a file according to the time sequence to be played.
Alternatively, step S140 may include: based on the time sequence, calling the video data in the determined video block into a cache, wherein the data volume of the video data which is called into the cache each time is a preset first data volume; and after the video data with the first data volume is called into the cache every time, the video data in the cache is sent to the target equipment in a subpackaged mode according to the preset second data volume.
In implementation, in the server, as shown in fig. 6, when receiving an instruction sent by the target device to play a certain video block, the FUSE file system running in the server needs to send the certain video block to the target device. Since the determined video chunk is not in the FUSE file system running in the server, the FUSE file system running in the server needs to retrieve the determined video chunk from the server. First, the FUSE file system running in the server may trigger the memory for storing video chunks to push certain video chunks to the FUSE file system running in the server through a dedicated interface. The memory pushes a first amount of video data, e.g., 512K worth of video data, each time when pushing a video block. And the amount of video data that the FUSE file system running in the server can call back each time is a second amount of data, such as 32K. Thus, the process of pushing and callbacks is not very coordinated. At this time, a cache is added between the memory and the FUSE file system running in the server, video data with the first data volume is temporarily stored through the cache, and the temporarily stored video data is slowly called back by the FUSE file system running in the server. Whenever the FUSE file system running in the server calls back video data of the second data size, the called-back video data of the second data size may be continuously transmitted to the target device.
In the embodiment of the disclosure, video data uploaded by a monitor in real time in the recording process is received, and when the video data with the preset data volume is received, the video data with the preset data volume is stored as a video block and the recording time corresponding to the video block is recorded; when a video query instruction which is sent by target equipment through a FUSE file system mounted in the target equipment and carries time period information is received, determining a video block of which the corresponding recording time is matched with the time period information; and sending the determined video blocks to the target equipment for playing according to the time sequence. Since the video data of the preset data amount is stored as a video block every time the video data of the preset data amount is received, and the preset data amount is generally a relatively small number, the video data of a short time can be stored as a video block in the server every time the video data of the short time is recorded. Therefore, the video data is stored, obtained and inquired in high real-time.
Yet another exemplary embodiment of the present disclosure provides an apparatus for playing a video, as shown in fig. 7, the apparatus including:
a receiving module 710, configured to receive video data uploaded by a monitor in real time during a recording process, store the video data with a preset data size as a video block whenever the video data with the preset data size is received, and record recording time corresponding to the video block;
the mounting module 720 is used for mounting the FUSE file system into the target device when the target device is detected to remotely log on the local computer;
a determining module 730, configured to determine, when a video query instruction carrying time period information and sent by the target device through the FUSE file system is received, a video block whose corresponding recording time matches the time period information;
a first sending module 740, configured to send the determined video blocks to the target device for playing according to a time sequence.
Optionally, the apparatus further comprises:
the recording module is used for recording a monitor identifier corresponding to the video block when the video data with the preset data volume is stored as the video block;
the determining module 730 is configured to determine, when receiving a video query instruction carrying a target monitor identifier and time period information and sent by a target device, a video block whose corresponding recording time matches the time period information in the video block corresponding to the target monitor identifier.
Optionally, after the mount module mounts the FUSE file system into the target device, the mount module further includes:
the second sending module is used for sending time period information to be selected to the target equipment according to the stored recording time of each video block; the time period information carried in the video query instruction is the time period information selected by the target device in the time period information to be selected through the selection instruction.
Optionally, each recording time includes at least one level of time period information, where the at least one level of time period information includes one or more of year information, month information, and day information;
the second sending module is configured to determine all highest-level time period information corresponding to the recording time of each stored video block, and send the highest-level time period information as time period information to be selected to the target device;
the determining module 730 includes:
the judgment unit is used for judging whether the time period information carried in the video query instruction is the time period information of the lowest level or not when the video query instruction carrying the time period information and sent by the target device through the FUSE file system is received;
a first determining unit, configured to determine a first level to which time period information carried in the video query instruction belongs when the time period information carried in the video query instruction is not the time period information of the lowest level, select, from recording times of stored video blocks, a recording time that matches the time period information carried in the video query instruction, determine all second-level time period information corresponding to the selected recording time, and send, to the target device, the second-level time period information as time period information to be selected, where the second level is lower than the first level by one level;
and a second determining unit, configured to determine, when the time period information carried in the video query instruction is the time period information of the lowest level, a video block whose corresponding recording time matches the time period information carried in the video query instruction.
Optionally, the first sending module 740 includes:
the call-in unit is used for calling the determined video data in the video block into a cache based on the time sequence, and the data volume of the video data which is called into the cache each time is a preset first data volume;
and the sending unit is used for subpackaging and sending the video data in the cache to the target equipment according to a preset second data volume after calling the video data of the first data volume into the cache every time.
With regard to the apparatus in the above embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be described in detail here.
In the embodiment of the disclosure, video data uploaded by a monitor in real time in the recording process is received, and when video data with preset data volume is received, the video data with the preset data volume is stored as a video block and the corresponding recording time of the video block is recorded; when a video query instruction which is sent by target equipment through an FUSE file system and carries time period information is received, determining a video block of which the corresponding recording time is matched with the time period information; and sending the determined video blocks to the target equipment for playing according to the time sequence. Since the video data of the preset data amount is stored as a video block every time the video data of the preset data amount is received, and the preset data amount is generally a relatively small number, the video data of a short time can be stored as a video block in the server every time the video data of the short time is recorded. Therefore, the video data is stored, obtained and inquired in high real-time.
It should be noted that: in the apparatus for playing a video according to the foregoing embodiment, when playing a video, the foregoing division of each function module is merely used as an example, and in practical applications, the foregoing function distribution may be completed by different function modules according to needs, that is, the internal structure of the server is divided into different function modules, so as to complete all or part of the functions described above. In addition, the apparatus for playing a video and the method for playing a video provided by the above embodiments belong to the same concept, and specific implementation processes thereof are detailed in the method embodiments and will not be described herein again.
Fig. 8 is a block diagram illustrating a server 1900 in accordance with an example embodiment. For example, server 1900 may be provided as a server. Referring to FIG. 8, server 1900 includes a processing component 1922 further including one or more processors and memory resources, represented by memory 1932, for storing instructions, e.g., applications, executable by processing component 1922. The application programs stored in memory 1932 may include one or more modules that each correspond to a set of instructions. Further, the processing component 1922 is configured to execute instructions to perform the method of playing video described above.
The server 1900 may further include a power component 1926 configured to perform power management of the server 1900, a wired or wireless network interface 1950 configured to connect the server 1900 to a network, and an input/output (I/O) interface 1958. The server 1900 may operate based on an operating system stored in memory 1932, such as Windows Server, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM, or the like.
receiving video data uploaded by a monitor in real time in the recording process, storing the video data with a preset data volume into a video block when the video data with the preset data volume is received, and recording the recording time corresponding to the video block;
when detecting that a target device is remotely logged in to a local machine, mounting a FUSE file system into the target device;
when a video query instruction which is sent by the target equipment through the FUSE file system and carries time period information is received, determining a video block of which the corresponding recording time is matched with the time period information;
and sending the determined video blocks to the target equipment for playing according to the time sequence.
Optionally, the method further comprises:
when the video data with the preset data volume is stored as a video block, recording a monitor identifier corresponding to the video block;
when a video query instruction carrying time period information and sent by target equipment is received, determining a video block of which the corresponding recording time is matched with the time period information, wherein the video query instruction comprises:
when a video query instruction which is sent by target equipment and carries a target monitor identifier and time period information is received, determining a video block of which the corresponding recording time is matched with the time period information in the video block corresponding to the target monitor identifier.
Optionally, after the mounting the FUSE file system into the target device, the method further includes:
according to the stored recording time of each video block, sending time period information to be selected to the target equipment; the time period information carried in the video query instruction is the time period information selected by the target device in the time period information to be selected through the selection instruction.
Optionally, each recording time includes at least one level of time period information, where the at least one level of time period information includes one or more of year information, month information, and day information;
the sending the time period information to be selected to the target device according to the stored recording time of each video block includes:
determining all the time period information of the highest level corresponding to the recording time of each stored video block, and sending the time period information of the highest level as the time period information to be selected to the target device;
when a video query instruction carrying time period information and sent by the target device through the FUSE file system is received, determining a video block of which the corresponding recording time is matched with the time period information, wherein the video query instruction comprises:
when a video query instruction carrying time period information and sent by the target device through the FUSE file system is received, judging whether the time period information carried in the video query instruction is time period information of the lowest level;
if the time period information carried in the video query instruction is not the time period information of the lowest level, determining a first level to which the time period information carried in the video query instruction belongs, selecting recording time matched with the time period information carried in the video query instruction from the recording time of each stored video block, determining all time period information of a second level corresponding to the selected recording time, and sending the time period information of the second level to the target equipment as the time period information to be selected, wherein the second level is lower than the first level by one level;
and if the time period information carried in the video query instruction is the time period information of the lowest level, determining a video block of which the corresponding recording time is matched with the time period information carried in the video query instruction.
Optionally, the sending the determined video block to the target device for playing according to a time sequence includes:
based on the time sequence, calling the video data in the determined video block into a cache, wherein the data volume of the video data which is called into the cache each time is a preset first data volume;
and after the video data with the first data volume is called into the cache every time, the video data in the cache is sent to the target equipment in a sub-packet mode according to a preset second data volume.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (8)
1. A method for playing a video, applied to a server, the method comprising:
receiving video data uploaded by a monitor in real time in a recording process, storing the video data with preset data volume as a video block when receiving the video data with preset data volume, and recording the corresponding recording time of the video block;
when detecting that a target device is remotely logged in to the local machine, mounting a user space FUSE file system operated in the server into the target device;
when a video query instruction which is sent by the target equipment through the FUSE file system and carries time period information is received, determining a video block of which the corresponding recording time is matched with the time period information;
adding a cache between a memory for storing the determined video blocks and the FUSE file system;
based on the time sequence, transferring the video data of the determined video block into a cache from the memory, wherein the data volume of the video data transferred into the cache each time is a preset first data volume;
and the FUSE file system calls back the video data in the cache according to a preset second data volume and sends the video data calling back the second data volume to the target equipment in a packet mode, wherein the second data volume is smaller than the first data volume.
2. The method of claim 1, further comprising:
when the video data with the preset data volume is stored as a video block, recording a monitor identifier corresponding to the video block;
when a video query instruction carrying time period information and sent by target equipment is received, determining a video block of which the corresponding recording time is matched with the time period information, wherein the video query instruction comprises:
when a video query instruction which is sent by target equipment and carries a target monitor identifier and time period information is received, determining a video block of which the corresponding recording time is matched with the time period information in the video block corresponding to the target monitor identifier.
3. The method of claim 1, wherein after the mounting the user space FUSE file system running in the server into the target device, further comprising:
according to the stored recording time of each video block, sending time period information to be selected to the target equipment; the time period information carried in the video query instruction is the time period information selected by the target device in the time period information to be selected through the selection instruction.
4. The method of claim 3, wherein each recording time comprises at least one level of time period information, and the at least one level of time period information comprises one or more of year information, month information and day information;
the sending the time period information to be selected to the target device according to the stored recording time of each video block includes:
determining all the time period information of the highest level corresponding to the recording time of each stored video block, and sending the time period information of the highest level as the time period information to be selected to the target device;
when a video query instruction carrying time period information and sent by the target device through the FUSE file system is received, determining a video block of which the corresponding recording time is matched with the time period information, wherein the video query instruction comprises:
when a video query instruction carrying time period information and sent by the target device through the FUSE file system is received, judging whether the time period information carried in the video query instruction is time period information of the lowest level;
if the time period information carried in the video query instruction is not the time period information of the lowest level, determining a first level to which the time period information carried in the video query instruction belongs, selecting recording time matched with the time period information carried in the video query instruction from the recording time of each stored video block, determining all time period information of a second level corresponding to the selected recording time, and sending the time period information of the second level to the target equipment as the time period information to be selected, wherein the second level is lower than the first level by one level;
and if the time period information carried in the video query instruction is the time period information of the lowest level, determining a video block of which the corresponding recording time is matched with the time period information carried in the video query instruction.
5. An apparatus for playing video, applied to a server, the apparatus comprising:
the receiving module is used for receiving video data uploaded by a monitor in real time in the recording process, storing the video data with preset data volume as a video block when the video data with preset data volume is received, and recording the recording time corresponding to the video block;
the mounting module is used for mounting the user space FUSE file system running in the server into the target equipment when the target equipment is detected to remotely log in the local machine;
the determining module is used for determining a video block of which the corresponding recording time is matched with the time period information when receiving a video query instruction which is sent by the target equipment through the FUSE file system and carries the time period information;
the first sending module is used for adding a cache between a memory for storing the determined video blocks and the FUSE file system; based on the time sequence, transferring the video data of the determined video block into a cache from the memory, wherein the data volume of the video data transferred into the cache each time is a preset first data volume; and the FUSE file system recalls the video data in the cache according to a preset second data volume and sends the video data with the recalled second data volume to the target equipment in a packet mode, wherein the second data volume is smaller than the first data volume.
6. The apparatus of claim 5, further comprising:
the recording module is used for recording a monitor identifier corresponding to the video block when the video data with the preset data volume is stored as the video block;
the determining module is used for determining a video block of which the corresponding recording time is matched with the time period information in the video block corresponding to the target monitor identifier when receiving a video query instruction which is sent by target equipment and carries the target monitor identifier and the time period information.
7. The apparatus of claim 5, wherein after the mount module mounts the user space FUSE file system running in the server into the target device, the mount module further comprises:
the second sending module is used for sending time period information to be selected to the target equipment according to the stored recording time of each video block; the time period information carried in the video query instruction is the time period information selected by the target device in the time period information to be selected through the selection instruction.
8. The apparatus of claim 7, wherein each recording time comprises at least one level of time period information, and the at least one level of time period information comprises one or more of year information, month information, and day information;
the second sending module is configured to determine all highest-level time period information corresponding to the recording time of each stored video block, and send the highest-level time period information as time period information to be selected to the target device;
the determining module comprises:
the judgment unit is used for judging whether the time period information carried in the video query instruction is the time period information of the lowest level or not when the video query instruction carrying the time period information and sent by the target device through the FUSE file system is received;
a first determining unit, configured to determine a first level to which time period information carried in the video query instruction belongs when the time period information carried in the video query instruction is not the time period information of the lowest level, select, from the stored recording times of the video blocks, a recording time that matches the time period information carried in the video query instruction, determine all second-level time period information corresponding to the selected recording time, and send, to the target device, the second-level time period information as time period information to be selected, where the second level is lower than the first level by one level;
and a second determining unit, configured to determine, when the time period information carried in the video query instruction is the time period information of the lowest level, a video block whose corresponding recording time matches the time period information carried in the video query instruction.
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