CN116801068A - Cloud recording and labeling method, device and server - Google Patents

Cloud recording and labeling method, device and server Download PDF

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Publication number
CN116801068A
CN116801068A CN202210258086.2A CN202210258086A CN116801068A CN 116801068 A CN116801068 A CN 116801068A CN 202210258086 A CN202210258086 A CN 202210258086A CN 116801068 A CN116801068 A CN 116801068A
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China
Prior art keywords
recording
video
frame
request information
time
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Pending
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CN202210258086.2A
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Chinese (zh)
Inventor
王勇
黄朝敏
吴振志
吴涵渠
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Wuhan Otto Intelligent Technology Co ltd
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Wuhan Otto Intelligent Technology Co ltd
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Priority to CN202210258086.2A priority Critical patent/CN116801068A/en
Publication of CN116801068A publication Critical patent/CN116801068A/en
Pending legal-status Critical Current

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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]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/85—Assembly of content; Generation of multimedia applications
    • H04N21/854—Content authoring
    • H04N21/8547—Content authoring involving timestamps for synchronizing content
    • 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
    • H04L67/10—Protocols in which an application is distributed across nodes in the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
    • H04N21/845—Structuring of content, e.g. decomposing content into time segments
    • H04N21/8455—Structuring of content, e.g. decomposing content into time segments involving pointers to the content, e.g. pointers to the I-frames of the video stream
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Information Transfer Between Computers (AREA)

Abstract

The application relates to the technical field of video processing, and discloses a method, a device and a server for labeling cloud recording. The method comprises the following steps: recording request information sent by terminal equipment is received; recording a first recording start time according to the recording request information; starting recording; receiving labelling request information sent by terminal equipment, wherein the labelling request information carries a time point of video labelling; checking whether the current frame is a key frame; if the current frame is not the key frame, generating the key frame by the distinguishing frame, recording a time point of video tagging, and using the time point of video tagging for subsequent positioning and tagging, so that a cloud to local time error and an error of synchronization of the cloud video and the local video are irrelevant, and the packet loss rate can be reduced while the error is avoided.

Description

Cloud recording and labeling method, device and server
Technical Field
The application relates to the technical field of video processing, in particular to a method, a device and a server for labeling cloud recording.
Background
In a scene with a higher security level, the audio-video call usually needs to be saved for later verification, and in the business handling process, the person cannot quickly locate the designated position due to the specificity of the audio-video file. The traditional method is realized by marking, the mark is marked at the place needing marking, and the position of the audio and video file marked at the time can be quickly positioned according to the mark.
At present, the method generally comprises the steps of recording locally, labeling locally and uploading to the cloud. Or recorded in the cloud, and does not support dotting. The time error from the cloud to the local and the synchronization error between the cloud video and the local video are all uncertain, and particularly, the cloud video and the local video error are related to network transmission and play lag is caused by a local player buffer factor. The local labeling request is initiated, and after the request is sent to the cloud, a larger error exists from the position where the labeling is actually required.
Disclosure of Invention
Accordingly, it is necessary to provide a method, a device and a server for labeling cloud records, which can avoid errors and reduce packet loss.
In a first aspect, an embodiment of the present application provides a method for labeling a cloud record, where the method includes:
recording request information sent by terminal equipment is received;
recording a first recording start time according to the recording request information;
starting recording;
receiving marking request information sent by the terminal equipment, wherein the marking request information carries a time point of video marking;
checking whether the current frame is a key frame;
if the current frame is not a key frame, generating the key frame by a distinguishing frame, and recording the time point of video tagging.
In some embodiments, the initiating recording includes:
caching video frames of preset time to a memory;
and writing the video frames exceeding the preset time into a video recording file.
In some embodiments, after the initiating the recording, the method further comprises:
and sending response information to the terminal equipment so that the terminal equipment records a second recording start time according to the response information.
In some embodiments, after receiving the tag request information sent by the terminal device, the method further includes:
recording the current time according to the marking request information;
and determining whether delay exists in the cached video frame according to the current time, the first recording starting time, the preset time and the video tagging time point.
In some embodiments, the method further comprises:
and if the current frame is a key frame, the current frame is used, and the time point of video tagging is recorded.
In some embodiments, after the recording the video tagging point in time, the method further comprises:
and receiving the frame description information sent by the terminal equipment.
In some embodiments, inserting the key frames into the video recording file according to the playing time;
and storing the video recording file.
In a second aspect, an embodiment of the present application further provides a cloud recording labeling device, including:
the first receiving module is used for receiving recording request information sent by the terminal equipment;
the recording module is used for recording a first recording start time according to the recording request information;
the starting module is used for starting recording;
the second receiving module is used for receiving the marking request information sent by the terminal equipment, wherein the marking request information carries the time point of video marking;
the checking module is used for checking whether the current frame is a key frame or not;
and the generation module is used for generating the key frame by the distinguishing frame and recording the time point of video tagging if the current frame is not the key frame.
In a third aspect, an embodiment of the present application further provides a server, including:
at least one processor; the method comprises the steps of,
a memory communicatively coupled to the at least one processor; wherein, the liquid crystal display device comprises a liquid crystal display device,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method described above.
In a fourth aspect, embodiments of the present application also provide a non-transitory computer-readable storage medium storing computer-executable instructions that, when executed by a processor, cause the processor to perform the above-described method.
Compared with the prior art, the application has the beneficial effects that: compared with the prior art, the cloud recording and labeling method, device and server provided by the embodiment of the application are characterized in that recording request information sent by the terminal equipment is received, the first recording start time is recorded according to the recording request information, then recording is started, the labeling request information sent by the terminal equipment is received, the labeling request information carries a video labeling time point, whether the current frame is a key frame is checked, if the current frame is not the key frame, the key frame is generated by a distinguishing frame, and meanwhile, the video labeling time point is recorded for later positioning the labeling position, so that the cloud to local time error and the cloud video synchronization error are irrelevant, and the packet loss rate can be reduced while the error is avoided.
Drawings
One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures of the drawings are not to be taken in a limiting sense, unless otherwise indicated.
Fig. 1 is an application scenario schematic diagram of a cloud recording labeling method according to an embodiment of the present application;
fig. 2 is a flowchart of a method for labeling cloud records according to an embodiment of the present application;
fig. 3 is a schematic diagram of data interaction between a server and a terminal device according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a cloud recording and labeling device according to an embodiment of the present application;
fig. 5 is a schematic hardware structure of a server according to an embodiment of the present application.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It should be noted that, if not in conflict, the features of the embodiments of the present application may be combined with each other, which is within the protection scope of the present application. In addition, while functional block division is performed in a device diagram and logical order is shown in a flowchart, in some cases, the steps shown or described may be performed in a different order than the block division in the device, or in the flowchart. Furthermore, the words "first," "second," "third," and the like as used herein do not limit the order of data and execution, but merely distinguish between identical or similar items that have substantially the same function and effect.
The cloud recording and labeling method provided by the embodiment of the application is suitable for an application scene shown in fig. 1, and comprises a terminal device 10 and a server 20, wherein the server 20 is a cloud server, and the terminal device 10 is a local terminal device. The terminal device 10 and the server 20 are connected through network communication, and perform data interaction. For a specific interaction process, please refer to a method for labeling cloud records.
It should be noted that, the method provided in the embodiment of the present application may be further extended to other suitable application environments, and is not limited to the application environment shown in fig. 1. In an actual application process, the application environment may further include more terminal devices and servers.
As shown in fig. 2, an embodiment of the present application provides a method for labeling cloud records, where the method is executed by a server, and the method includes:
step 210, receiving recording request information sent by a terminal device.
In the embodiment of the application, the terminal equipment sends the recording request information to the server, and the server receives the recording request information sent by the terminal equipment.
Step 220, recording a first recording start time according to the recording request information.
In step 230, recording is initiated.
In the embodiment of the present application, the first recording start time may be T 2 Indicating that, after receiving the recording request information sent by the terminal device, the server records a first recording start time T according to the recording request information 2 Recording is then started.
As a specific implementation manner of step 230, the method includes: caching video frames of preset time to a memory; and writing the video frames exceeding the preset time into a video recording file.
The preset time may be set according to practical situations, and in the embodiment of the present application, the preset time is N seconds. When the server starts recording, the video frames with preset time (N seconds) are cached to the memory, and the video recorded files are written into the video frames exceeding the preset time (N seconds).
In some embodiments, after the initiating the recording, the method further comprises: and sending response information to the terminal equipment so that the terminal equipment records a second recording start time according to the response information.
The response information is the response of the recording request, after the server starts recording, the response information is sent to the terminal equipment to inform the terminal equipment that the server starts recording, and after the terminal equipment receives the response information, the second recording starting time is started to be recorded. In the embodiment of the present application, the second recording start time may be T 0 To represent.
And step 240, receiving the marking request information sent by the terminal equipment, wherein the marking request information carries the time point of video marking.
In the embodiment of the application, after the recording is started, the terminal equipment triggers the marking. I.e. the terminal device will record the time point T of marking after the second recording start time is finished 1 . Time T of labelling recorded by terminal device 1 And a second recording start time T 0 A point in time for video tagging is determined. The time point of video tagging may be carried in the tagging request information and sent to the server together. In other embodiments, the video tagging point in time and the tagging request may be sent separately, i.e., the terminal device sends the tagging request information to the server first and then sends the video tagging point in time. Further, the video tagging time point is a relative time point of the video tagging position, and the video tagging time point is a time point T of recording tagging through the terminal device 1 Subtracting the recording start time of the terminal recording, i.e. the second recording start time T 0 Obtained.
In order to check whether the buffered video frame meets the delay error, in other embodiments, after receiving the tagging request information sent by the terminal device, the method further comprises recording the current time according to the tagging request information; and determining whether delay exists in the cached video frame according to the current time, the first recording starting time, the preset time and the video tagging time point.
The purpose of the server to record the current time according to the labelling request information is to check whether the buffered video frames meet the delay error. In the embodiment of the application, the current time is T 3 The first recording start time is T 2 The preset time is N seconds, and the time point of video marking is T 1 -T 0 . Specifically, when T 3 -T 2 -N<T 1 -T 0 And if the difference between the current time minus the first recording start time and the preset time is smaller than the time point of video marking, the buffered video frame is represented to meet the delay error, otherwise, the buffered video frame is represented to not meet the delay error.
Step 250 checks if the current frame is a key frame.
In the embodiment of the application, the key frame is an I frame, and the key frame contains a complete picture, which can be understood as the complete reservation of the picture of the frame, and can be completed only by the frame data during decoding. Specifically, the server finds out the current frame from the video cached in the memory, and checks whether the current frame is a key frame, i.e. checks whether the current frame contains a complete picture.
If the current frame is not a key frame, generating the key frame from a difference frame and recording the video tagging point in time, step 260.
In the embodiment of the application, the distinguishing frame is a P frame, the distinguishing frame has no complete picture data, only has data of picture difference with the previous frame or the next frame, and the picture cached before is needed to overlap the difference defined by the present frame during decoding, so as to generate a final picture. When the current frame found by the server from the video cached in the memory is not a key frame, generating a key frame from the distinguishing frame, replacing the distinguishing frame by the generated key frame, and recording the time point T of video tagging 1 -T 0 For subsequent positioning of the labeling position.
In still other embodiments, the method further comprises: and if the current frame is a key frame, the current frame is used, and the time point of video tagging is recorded.
In the embodiment of the application, when the server finds out the current frame from the memory cache and finds out that the current frame is the key frame after the inspection, the replacement is not needed, the current frame is used, and the time point of video marking is recorded.
In still other embodiments, after the recording the video tagging point in time, the method further comprises: and receiving the frame description information sent by the terminal equipment.
In the embodiment of the application, the frame description information is used for describing the labels, the server receives the frame description information sent by the terminal equipment, and then the corresponding labels can be quickly found according to the frame description information, and the positions of the labels of the video files at the time can be quickly positioned according to the time of the labels.
In some embodiments, the method further comprises: inserting the key frames into the video recording file according to the playing time; and storing the video recording file.
After the whole process is finished, the server inserts the key frames into the video recording file according to the playing time and stores the video recording file.
In the embodiment of the application, recording request information sent by terminal equipment is received, a first recording start time is recorded according to the recording request information, recording is started, the marking request information sent by the terminal equipment is received, the marking request information carries a video marking time point, whether a current frame is a key frame or not is checked, if the current frame is not the key frame, the key frame is generated by a distinguishing frame, and the video marking time point is recorded and used for positioning a marking position subsequently, so that a cloud time error and a cloud video synchronization error are irrelevant, and the packet loss rate can be reduced while errors can be avoided.
The present application is easy to understand, and the following describes in detail, by taking a specific embodiment as an example, the data interaction between the server and the terminal device of the present application:
as shown in fig. 3, first, a terminal device initiates recording request information to a server, and the server receives the recording request information and is based on the recording request informationThe recording request information records a first recording start time T 2 . Then the server starts recording and sends response information to the terminal equipment, and the terminal equipment records a second recording start time T according to the response information 0 。
Further, the terminal device triggers labeling, and records a labeling time point T 1 Then initiating a labelling request message to a server, wherein the labelling request message carries a video labelling time point T 1 -T 0 . The video tagging time point is a time point T based on recording tagging of terminal equipment 1 Subtracting the second recording start time T 0 Obtained.
The server receives the marking request information and records the current time point T based on the marking request information 3 . Then, the server checks whether the current frame is a key frame, generates a key frame from the distinguished frame if the current frame is not a key frame, and records a time point T of video tagging 1 -T 0 . If the current frame is a key frame, the current frame is used, and the time point T of video tagging is recorded at the same time 1 -T 0 。
Then, the terminal device edits the frame specification information and transmits the frame specification information to the server for storage. And after the whole process is finished, the server inserts the key frames into the video recording file according to the playing time and stores the video recording file.
Correspondingly, the embodiment of the application also provides a cloud recording and labeling device 400, as shown in fig. 4, the device 400 includes:
a first receiving module 401, configured to receive recording request information sent by a terminal device;
a recording module 402, configured to record a first recording start time according to the recording request information;
a starting module 403, configured to start recording;
a second receiving module 404, configured to receive tagging request information sent by the terminal device, where the tagging request information carries a time point of video tagging;
a checking module 405, configured to check whether the current frame is a key frame;
a generating module 406, configured to generate the key frame from the distinguishing frame if the current frame is not the key frame, and record a time point of the video tagging.
According to the cloud recording and labeling device provided by the embodiment of the application, the recording request information sent by the terminal equipment is received through the first receiving module, the first recording start time is recorded through the recording module according to the recording request information, then the recording is started through the starting module, further, the labeling request information sent by the terminal equipment is received through the second receiving module, wherein the labeling request information carries a video labeling time point, whether the current frame is a key frame or not is checked through the checking module, if the current frame is not the key frame, the key frame is generated through the distinguishing frame through the generating module, the video labeling time point is recorded, and the video labeling time point is used for positioning and labeling positions subsequently, so that the cloud time error and the cloud video synchronization error are irrelevant, and the packet loss rate can be reduced while errors can be avoided.
Optionally, in other embodiments of the apparatus, referring to fig. 4, the apparatus 400 further includes:
and the sending module 407 is configured to send response information to the terminal device, so that the terminal device records a second recording start time according to the response information.
Optionally, in other embodiments of the apparatus, referring to fig. 4, the apparatus 400 further includes:
a calculating module 408, configured to determine whether there is a delay in buffering the video frame according to the current time, the first recording start time, the preset time, and the video tagging time point.
Optionally, in other embodiments of the apparatus, referring to fig. 4, the apparatus 400 further includes:
an inserting module 409, configured to insert the key frame into the video recording file according to a playing time;
a saving module 410, configured to save the video recording file.
Optionally, in other embodiments of the apparatus, referring to fig. 4, the first receiving module 401 is further configured to:
and receiving the frame description information sent by the terminal equipment.
Optionally, in other embodiments of the apparatus, referring to fig. 4, the recording module 402 is further configured to:
and recording the current time according to the marking request information.
And if the current frame is a key frame, the current frame is used, and the time point of video tagging is recorded.
Optionally, in other embodiments of the apparatus, the starting module 403 is specifically configured to:
caching video frames of preset time to a memory;
and writing the video frames exceeding the preset time into a video recording file.
It should be noted that the cloud recording and labeling device may execute the cloud recording and labeling method provided by the embodiment of the present application, and has corresponding functional modules and beneficial effects of the execution method, and technical details not described in detail in the cloud recording and labeling device embodiment may refer to the cloud recording and labeling method provided by the embodiment of the present application.
Fig. 5 is a schematic hardware structure of a server according to an embodiment of the present application, as shown in fig. 5, a server 500 includes:
one or more processors 501 and a memory 502, one processor being illustrated in fig. 5.
The processor 501 and the memory 502 may be connected by a bus or otherwise, for example in fig. 5.
The memory 502 is used as a non-volatile computer readable storage medium, and can be used to store non-volatile software programs, non-volatile computer executable programs, and modules, such as program instructions/modules corresponding to the cloud end recording and labeling method in the embodiment of the present application. The processor 501 executes the nonvolatile software programs, instructions and modules stored in the memory 502, so as to perform various functional applications and data processing of the server, that is, implement the cloud recording labeling method of the above method embodiment.
Memory 502 may include a storage program area that may store an operating system, at least one application program required for functionality, and a storage data area; the storage data area may store data created from use of the cloud recording tagging device, etc. In addition, memory 502 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage device. In some embodiments, memory 502 may optionally include memory located remotely from processor 501, which may be connected to the cloud recording and labeling device via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The embodiment of the application also provides a non-volatile computer readable storage medium, which stores computer executable instructions that, when executed by one or more processors, enable the one or more processors to perform the cloud recording and labeling method in any of the above method embodiments.
The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
From the above description of embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus a general purpose hardware platform, or may be implemented by hardware. Those skilled in the art will appreciate that all or part of the processes implementing the methods of the above embodiments may be implemented by a computer program for instructing relevant hardware, where the program may be stored in a computer readable storage medium, and where the program may include processes implementing the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-only Memory (ROM), a random-access Memory (Random Access Memory, RAM), or the like.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and are not limiting; the technical features of the above embodiments or in the different embodiments may also be combined within the idea of the application, the steps may be implemented in any order, and there are many other variations of the different aspects of the application as described above, which are not provided in detail for the sake of brevity; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application.

Claims (10)

1. A method for tagging cloud records, the method comprising:
recording request information sent by terminal equipment is received;
recording a first recording start time according to the recording request information;
starting recording;
receiving marking request information sent by the terminal equipment, wherein the marking request information carries a time point of video marking;
checking whether the current frame is a key frame;
if the current frame is not a key frame, generating the key frame by a distinguishing frame, and recording the time point of video tagging.
2. The method of claim 1, wherein the initiating recording comprises:
caching video frames of preset time to a memory;
and writing the video frames exceeding the preset time into a video recording file.
3. The method of claim 2, wherein after the initiating the recording, the method further comprises:
and sending response information to the terminal equipment so that the terminal equipment records a second recording start time according to the response information.
4. A method according to claim 3, wherein after receiving the labelling request information sent by the terminal device, the method further comprises:
recording the current time according to the marking request information;
and determining whether delay exists in the cached video frame according to the current time, the first recording starting time, the preset time and the video tagging time point.
5. The method according to claim 4, wherein the method further comprises:
and if the current frame is a key frame, the current frame is used, and the time point of video tagging is recorded.
6. The method of any of claims 1-5, wherein after the recording the video tagging point in time, the method further comprises:
and receiving the frame description information sent by the terminal equipment.
7. The method of claim 6, wherein the method further comprises:
inserting the key frames into the video recording file according to the playing time;
and storing the video recording file.
8. A cloud recording and labeling device, comprising:
the first receiving module is used for receiving recording request information sent by the terminal equipment;
the recording module is used for recording a first recording start time according to the recording request information;
the starting module is used for starting recording;
the second receiving module is used for receiving the marking request information sent by the terminal equipment, wherein the marking request information carries the time point of video marking;
the checking module is used for checking whether the current frame is a key frame or not;
and the generation module is used for generating the key frame by the distinguishing frame and recording the time point of video tagging if the current frame is not the key frame.
9. A server, comprising:
at least one processor; the method comprises the steps of,
a memory communicatively coupled to the at least one processor; wherein, the liquid crystal display device comprises a liquid crystal display device,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of any one of claims 1-7.
10. A non-transitory computer readable storage medium storing computer executable instructions which, when executed by a processor, cause the processor to perform the method of any of claims 1-7.
CN202210258086.2A 2022-03-16 2022-03-16 Cloud recording and labeling method, device and server Pending CN116801068A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210258086.2A CN116801068A (en) 2022-03-16 2022-03-16 Cloud recording and labeling method, device and server

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210258086.2A CN116801068A (en) 2022-03-16 2022-03-16 Cloud recording and labeling method, device and server

Publications (1)

Publication Number Publication Date
CN116801068A true CN116801068A (en) 2023-09-22

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Application Number Title Priority Date Filing Date
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