CN115827574A - Method and device for reading video playback data and storage medium - Google Patents

Method and device for reading video playback data and storage medium Download PDF

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Publication number
CN115827574A
CN115827574A CN202211353023.1A CN202211353023A CN115827574A CN 115827574 A CN115827574 A CN 115827574A CN 202211353023 A CN202211353023 A CN 202211353023A CN 115827574 A CN115827574 A CN 115827574A
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China
Prior art keywords
array
target
playback data
video playback
video
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CN202211353023.1A
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Chinese (zh)
Inventor
王宏明
李元飞
金云
黄仁欢
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CRSC Wanquan Signaling Equipment Co Ltd
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CRSC Wanquan Signaling Equipment Co Ltd
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Priority to CN202211353023.1A priority Critical patent/CN115827574A/en
Publication of CN115827574A publication Critical patent/CN115827574A/en
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Abstract

The application provides a method, equipment and a computer-readable storage medium for reading video playback data, wherein the method comprises the following steps: acquiring target video playback data, wherein the target video playback data comprises a preset array name; assigning the preset array name based on an assignment statement preset in the target file to obtain a target array name; traversing the processed target video playback data, and restoring the object in the target array according to the name of the target array to obtain a target object; and playing the video according to the target object in the target video playback data. The method and the device have the advantages that the assignment is carried out on the array name in the video playback data through the assignment statement, so that the video playback data can be restored to be played data, the video is played based on the restored data, occupied space during storage is reduced, the video is played without the help of other tools, and playing convenience of the stored video playback data is improved.

Description

Method and device for reading video playback data and storage medium
Technical Field
The present application relates to the field of data processing technologies, and in particular, to a method and an apparatus for reading video playback data, and a computer-readable storage medium.
Background
Many existing video playback files are binary files, have no text readability, and can be played only after the playback files are analyzed by means of other tools. Meanwhile, in the process of storing the files, because the video playback files are large and the required storage space is too large, the files are generally compressed and then stored, while the existing compression mode still has binary data after the compression is finished, and can be analyzed and played only by other auxiliary tools, so that the processing process is complex.
Disclosure of Invention
The present application mainly aims to provide a method and a device for reading video playback data, and a computer-readable storage medium, which aim to reduce the use of storage space and improve the convenience of parsing and playing the stored video playback data.
In a first aspect, the present application provides a method for reading video playback data, including the following steps:
acquiring target video playback data, wherein the target video playback data comprises a preset array name;
performing assignment processing on the preset array name based on an assignment statement preset in the target file to obtain a target array name;
traversing the processed target video playback data, and restoring the object in the target array according to the name of the target array to obtain a target object;
and playing the video according to the target object in the target video playback data.
In a second aspect, the present application also provides a computer device comprising a processor, a memory, and a computer program stored on the memory and executable by the processor, wherein the computer program, when executed by the processor, implements the steps of the method for reading video playback data as described above.
In a third aspect, the present application further provides a computer-readable storage medium, having a computer program stored thereon, where the computer program, when executed by a processor, implements the steps of the method for reading video playback data as described above.
The application provides a method and equipment for reading video playback data and a computer readable storage medium, and the method comprises the steps of obtaining target video playback data, wherein the target video playback data comprises a preset array name; assigning the preset array name based on an assignment statement preset in the target file to obtain a target array name; traversing the processed target video playback data, and restoring the object in the target array according to the name of the target array to obtain a target object; the video is played according to the target object in the target video playback data, the data format of the target video playback data conforms to JavaScript language and json grammar, and the assignment processing can be performed on the array name in the video playback data through the assignment statement in the js file, so that the video playback data can be restored to the played data, the video is played based on the restored data, in the storage process, the space occupied in the storage process is reduced, in the process of performing data restoration and video playing, other tools are not needed for playing, and the convenience of analyzing and playing the stored video playback data is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic flowchart of a method for reading video playback data according to an embodiment of the present application;
fig. 2 is a block diagram illustrating a structure of a computer device according to an embodiment of the present application.
The implementation, functional features and advantages of the objectives of the present application will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The flow diagrams depicted in the figures are merely illustrative and do not necessarily include all of the elements and operations/steps, nor do they necessarily have to be performed in the order depicted. For example, some operations/steps may be decomposed, combined or partially combined, so that the actual execution sequence may be changed according to the actual situation.
The embodiment of the application provides a method for reading video playback data, computer equipment and a computer readable storage medium. The method for reading the video playback data can be applied to terminal equipment, and the terminal equipment can be electronic equipment such as a tablet computer, a notebook computer and a desktop computer. The method can also be applied to a server, which can be an independent server, or a cloud server providing basic cloud computing services such as cloud service, a cloud database, cloud computing, a cloud function, cloud storage, network service, cloud communication, middleware service, domain name service, security service, content Delivery Network (CDN), big data and artificial intelligence platform, and the like.
Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
Referring to fig. 1, fig. 1 is a schematic flowchart illustrating a method for reading video playback data according to an embodiment of the present disclosure.
As shown in fig. 1, the reading method of video playback data includes steps S101 to S104.
Step S101, target video playback data are obtained, and the target video playback data comprise preset array names.
Illustratively, target video playback data to be played back is acquired, where the target video playback data includes a preset array name, and it can be understood that, in the target video playback data, a plurality of preset array names and array information in an array corresponding to the preset array names exist, so as to store the video playback data, that is, according to the video playback data, playback of a corresponding video can be achieved.
For example, the number of characters corresponding to the preset array name is smaller than the number of characters of the array name included before the video playback data is processed, so that in the process of processing and storing the video playback data, the number of characters is small, and the space occupied by data storage can be reduced.
And S102, assigning the preset array name based on an assignment statement preset in the target file to obtain the target array name.
Optionally, the target file is a JavaScript file, where the target file is used to support normal operation of the operating environment, for example, the JavaScript file is used to support operation of the second operating environment, so that in the second operating environment, a preset assignment statement is used to assign a preset array name, and a target array name is obtained, so as to restore the array name, and perform corresponding parsing processing according to the array name.
Optionally, in a second operating environment using JavaScript as a programming language, the preset data name may be assigned according to a preset assignment statement.
For example, the preset assignment statement is shown as follows:
varmyval={$map:{c:'controlId',s:'stationId',su:'statusUse'}
a:[{c:3001,s:12,su:0}]
the method comprises the steps of obtaining a control Id, a stationId and a statusUse, wherein $ map is used for indicating assignment processing, c, s and su are used for indicating preset array names, and the control Id, the stationId and the statusUse are used for indicating assigned values; a [ { c:3001, s; it can be understood that the following result can be obtained after the assignment processing is performed on the array to be assigned: a [ { controlId:3001, stationId 12, status use.
It can be understood that the object in the array corresponding to the target array name may be parsed by the target array name to implement playing of the video, and meanwhile, the preset array name is still stored in a programming language format, such as a json data format, and is readable.
Step S103, traversing the processed target video playback data, determining a target array according to the target array name, and restoring the object in the target array to obtain the target object.
Illustratively, traversing the target video playback data subjected to assignment processing, determining a target array according to the name of the target array, and restoring an object in the target array to obtain a target object, so as to play a video according to the target object.
It can be understood that after the preset array name is subjected to assignment processing, the target array is determined according to the target array name, so that arrays which are not used for playing the video can be excluded, and the efficiency of data conversion is improved.
And step S104, playing the video according to the target object in the target video playback data.
Illustratively, after the target object is obtained, video playing can be performed according to the target object to realize video playback based on the video playback data, and meanwhile, the video playback data is not converted into a binary data format and has readability, so that the stored video playback data still has readability under the condition of reducing the space occupied by storage.
In some embodiments, the method further comprises determining an object class statement based on the first execution environment; registering the object class statement in a second running environment, wherein the first running environment and the second running environment use different programming languages; the step of restoring the object in the target array according to the name of the target array by the target video playback data after traversal processing to obtain the target object comprises the following steps: in the second operating environment, traversing the processed target video playback data, determining a target array according to the target array name, and performing reduction processing on the objects in the target array according to the object type statements to obtain the target objects.
Optionally, an object class statement is determined in the first execution environment, where the object class statement is used to perform reduction processing on an object in the target array, and after the object class statement is determined in the first execution environment, the object class statement is registered in the second execution environment, so that in the second execution environment, the object in the target array is subjected to reduction processing through the object class statement.
In a specific implementation process, registering the object class statement in the second runtime environment includes registering the object class statement in a target file for supporting the second runtime environment.
It can be understood that the programming language used by the first execution environment is different from that used by the second execution environment, and therefore, the object class statement written in the first execution environment needs to be registered in the second execution environment for use, so that the object in the target array is restored by using the object class statement in the second execution environment.
Specifically, in the second operating environment, the processed target video playback data is traversed, for example, array names corresponding to the arrays in the target video playback data are obtained through traversal, the target array is determined according to the target array name, and thus the object in the target array is restored by using the object class statement to obtain the target object.
In some embodiments, the programming language used by the first runtime environment is a C + + language, and the programming language used by the second runtime environment is a Javascript language.
Illustratively, the object class statements are written in a C + + operating environment, and after the writing is completed, the object class statements are registered in the Javascript engine, so that the object in the target array can be restored by the object class statements in the Javascript engine, and the target object is obtained.
In some embodiments, the determining an object class statement based on the first runtime environment includes: and determining the object class statement according to the inheritance relationship with the target class based on the first operating environment.
Illustratively, in a C + + runtime environment, the written object class statement may inherit from the target class, so that the object class statement has the target function attribute, and thus, a corresponding function can be implemented in the C + + runtime environment.
In a specific implementation process, the target class is a qobject class, and the object class statement is made to have the attributes of controlId, stationId and statussuse by inheriting the qobject class, so that the object in the target array can be restored.
Specifically, after the Javascript engine completes the registration of the object class statement, the object attribute in the target array may be restored according to the mapping table, and in a specific implementation process, the following statements are shown:
(function composeObject(mp,v,o){for(k in mp){o[mp[k]]=v[k];}})
wherein mp is a mapping table, v is an object value in JavaScript, o is a target object of QObject to be derived, a QAtsSection array is obtained by traversing a value in an a array in a myval object and calling the object class statement to restore, and the restoration is completed for the array and the object thereof, so that the QAtsSection array can run in a C + + running environment to play a corresponding video.
In some embodiments, the playing of the video according to the target object in the target video playback data includes: and analyzing the target object in the first operation environment to play the video corresponding to the target object.
Illustratively, after a target object is obtained in the Javascript engine, the target object is transmitted to the C + + running environment to analyze the target object in the C + + running environment and play a corresponding video, thereby implementing playback of the video.
For example, the QAtsSection array and its corresponding objects are parsed in a C + + runtime environment to play the corresponding video.
In some embodiments, the method further comprises: acquiring a shot video; compressing the shot video to obtain video playback data; storing the video playback data in a video repository; the acquiring target video playback data includes: target video playback data is obtained based on the video repository.
Illustratively, the captured video is obtained, and optionally, the captured device is obtained through a capturing device.
For example, the shot video may be a surveillance video and therefore needs to be stored, but a large storage space is consumed for directly storing the video, the shot video is compressed to obtain video playback data, and the video playback data is stored in a video storage library, so that the storage space occupied by storing the video is reduced.
For example, when the target video playback data is obtained, the video repository may be used to obtain the target video playback data, for example, the target video playback data is determined and obtained in the video repository according to the shooting date or the storage date of the video.
In some embodiments, the compressing the captured video to obtain video playback data includes: determining video information corresponding to the video, wherein the video information comprises a plurality of array names and array information corresponding to each array; refining the array name to obtain a preset array name; and determining video playback data according to the preset array name corresponding to the array and the array information corresponding to the array.
Exemplarily, determining video information corresponding to a video, wherein the video information includes array names corresponding to a plurality of arrays and array information corresponding to each array, for example, { "controlId":3001, "statistid": 12, "statussuse": 0}, where the controlId, statistid, and statussuse are the array names, and 3001, 12, and 0 are the corresponding array information; the method comprises the steps of refining an array name to obtain a preset array name, for example, refining control Id, stationId and status use to reduce the number of characters used by the array name, so that the storage space occupied when the array name is stored is reduced, and determining video playback data according to the preset array name corresponding to the array and array information corresponding to the array to reduce the storage space occupied when the video playback data is stored.
In some embodiments, the determining video playback data according to the preset array name corresponding to the array and the array information corresponding to the array includes: determining a plurality of preset arrays according to the preset array names; classifying the array information into a plurality of preset arrays according to the corresponding relation between the array name of the array and the preset array name and the corresponding relation between the array name of the array and the array information of the array; and determining video playback data according to the plurality of preset arrays and the array information corresponding to the preset arrays.
For example, after the group name is refined, the preset groups may be re-determined, for example, the refining rule is to refine according to an initial, for example, the name of the preset group obtained after the control id is refined is c, and the group information of the control id group is sorted into the c group, so as to obtain the preset group; optionally, when array names with the same initial exist, distinguishing by using other characters in the array names or adding preset characters, for example, refining the statistid and the statussue to obtain preset array names s, su, s1 and s2, so as to distinguish, and divide the array information of the statistid array into the corresponding array corresponding to s or s1, and in the same way, divide the array information of the statussue array into the corresponding array corresponding to su or s 2. Optionally, when array names with the same initial exist, the array names are abstracted to be the same preset array name, for example, after the stationId and the statussue are abstracted, the preset array name s is obtained, that is, the two arrays are merged into one preset array, so that array information in the two arrays is classified into the array with the preset array name s, thereby obtaining the preset array with the preset array name s, which can further reduce the storage space occupied during storage.
By reducing the characters of the array names or combining the arrays corresponding to the array names with the same characters, the storage space occupied during storage can be effectively reduced, and if manual examination or reading is needed, the contained information can be obtained by using the relational mapping table, so that the processed video playback data still has readability.
In the method for reading video playback data provided in the above embodiment, target video playback data is obtained, where the target video playback data includes a preset array name; assigning the preset array name based on an assignment statement preset in the target file to obtain a target array name; traversing the processed target video playback data, determining a target array according to the name of the target array, and performing reduction processing on an object in the target array to obtain a target object; and playing the video according to the target object in the target video playback data. The data format of the target video playback data conforms to JavaScript language and json grammar, so that the target video playback data is readable, meanwhile, the assignment statement in the js file is used for assigning the array name in the video playback data, so that the video playback data can be restored to play data, video playing is performed based on the restored data, in the storage process, the occupied storage space is reduced, in the data restoration and video playing processes, playing is performed without the help of other tools, and the convenience of analyzing and playing the stored video playback data is improved.
Referring to fig. 2, fig. 2 is a schematic block diagram illustrating a structure of a computer device according to an embodiment of the present disclosure. The computer device may be a server or a terminal.
As shown in fig. 2, the computer device includes a processor, a memory, and a network interface connected by a system bus, wherein the memory may include a storage medium and an internal memory.
The storage medium may store an operating system and a computer program. The computer program includes program instructions that, when executed, cause a processor to perform any one of the methods of reading video playback data.
The processor is used for providing calculation and control capability and supporting the operation of the whole computer equipment.
The internal memory provides an environment for execution of a computer program in the storage medium, which, when executed by the processor, causes the processor to perform any one of the methods for reading video playback data.
The network interface is used for network communication, such as sending assigned tasks and the like. Those skilled in the art will appreciate that the architecture shown in fig. 2 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
It should be understood that the Processor may be a Central Processing Unit (CPU), and the Processor may be other general purpose processors, digital Signal Processors (DSPs), application Specific Integrated Circuits (ASICs), field Programmable Gate Arrays (FPGAs) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components, etc. Wherein a general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
Wherein, in one embodiment, the processor is configured to execute a computer program stored in the memory to implement the steps of:
acquiring target video playback data, wherein the target video playback data comprises a preset array name;
assigning the preset array name based on an assignment statement preset in the target file to obtain a target array name;
traversing the processed target video playback data, determining a target array according to the target array name, and performing reduction processing on an object in the target array to obtain a target object;
and playing the video according to the target object in the target video playback data.
In one embodiment, the processor, when implementing the method for reading video playback data, is configured to implement:
determining an object class statement based on the first operating environment;
registering the object class statement in a second running environment, wherein the first running environment and the second running environment use different programming languages;
when the target video playback data after the traversal processing is realized, a target array is determined according to the target array name, and the object in the target array is subjected to reduction processing to obtain the target object, the method is further used for realizing that:
in the second operating environment, traversing the processed target video playback data, determining a target array according to the target array name, and performing reduction processing on the objects in the target array according to the object type statements to obtain the target objects.
In one embodiment, the processor, when implementing determining the object class statement based on the first execution environment, is configured to implement:
and determining the object class statement according to the inheritance relationship with the target class based on the first operating environment.
In one embodiment, the processor, when enabling playback of video according to a target object in the target video playback data, is configured to enable:
and analyzing the target object in a first operation environment so as to play a video corresponding to the target object.
In one embodiment, when implementing the method for reading video playback data, the processor is further configured to implement:
acquiring a shot video;
compressing the shot video to obtain video playback data;
storing the video playback data in a video repository;
when the target video playback data is obtained, the method is used for realizing that:
target video playback data is obtained based on the video repository.
In one embodiment, when the processor implements compression processing on the captured video to obtain video playback data, the processor is configured to implement:
determining video information corresponding to the video, wherein the video information comprises array names corresponding to a plurality of arrays and array information corresponding to each array;
refining the array name to obtain a preset array name;
and determining video playback data according to the preset array name corresponding to the array and the array information corresponding to the array.
In one embodiment, when determining video playback data according to a preset array name corresponding to an array and array information corresponding to the array, the processor is configured to:
determining a plurality of preset arrays according to the preset array names;
classifying the array information into a plurality of preset arrays according to the corresponding relation between the array name of the array and the preset array name and the corresponding relation between the array name of the array and the array information of the array;
and determining video playback data according to the plurality of preset arrays and the array information corresponding to the preset arrays.
It should be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working process of reading the video playback data described above may refer to the corresponding process in the foregoing embodiment of the method for controlling reading of video playback data, and details are not described herein again.
Embodiments of the present application also provide a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, where the computer program includes program instructions, and when the program instructions are executed, a method implemented by the computer program instructions may refer to various embodiments of the method for reading video playback data of the present application.
The computer-readable storage medium may be an internal storage unit of the computer device described in the foregoing embodiment, for example, a hard disk or a memory of the computer device. The computer readable storage medium may also be an external storage device of the computer device, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like, provided on the computer device.
It is to be understood that the terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should also be understood that the term "and/or" as used in this specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items and includes such combinations. It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present application are merely for description and do not represent the merits of the embodiments. While the invention has been described with reference to specific embodiments, the scope of the invention is not limited thereto, and those skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the invention. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. A method for reading video playback data, comprising:
acquiring target video playback data, wherein the target video playback data comprises a preset array name;
performing assignment processing on the preset array name based on an assignment statement preset in the target file to obtain a target array name;
traversing the processed target video playback data, determining a target array according to the target array name, and performing reduction processing on an object in the target array to obtain a target object;
and playing the video according to the target object in the target video playback data.
2. The method for reading video playback data according to claim 1, further comprising:
determining an object class statement based on the first operating environment;
registering the object class statement in a second execution environment, wherein the first execution environment and the second execution environment use different programming languages;
determining a target array according to the name of the target array by the target video playback data after traversal processing, and performing reduction processing on an object in the target array to obtain a target object, wherein the method comprises the following steps:
in the second operating environment, traversing the processed target video playback data, determining a target array according to the target array name, and performing reduction processing on the objects in the target array according to the object type statements to obtain the target objects.
3. The method for reading video playback data according to claim 2, wherein the programming language used by the first execution environment is a C + + language, and the programming language used by the second execution environment is a Javascript language.
4. The method for reading video playback data according to claim 2, wherein the determining an object class statement based on the first execution environment includes:
and determining the object class statement according to the inheritance relationship with the target class based on the first running environment.
5. The method for reading video playback data according to any one of claims 1 to 4, wherein the playing of the video according to the target object in the target video playback data includes:
and analyzing the target object in a first operation environment so as to play a video corresponding to the target object.
6. The method for reading video playback data according to any one of claims 1 to 4, characterized in that the method further comprises:
acquiring a shot video;
compressing the shot video to obtain video playback data;
storing the video playback data in a video repository;
the obtaining of the target video playback data includes:
target video playback data is obtained based on the video repository.
7. The method for reading video playback data according to claim 6, wherein the compressing the video obtained by shooting to obtain the video playback data includes:
determining video information corresponding to the video, wherein the video information comprises array names corresponding to a plurality of arrays and array information corresponding to each array;
refining the array name to obtain a preset array name;
and determining video playback data according to the preset array name corresponding to the array and the array information corresponding to the array.
8. The method for reading video playback data according to claim 6, wherein the determining the video playback data according to the preset array name corresponding to the array and the array information corresponding to the array comprises:
determining a plurality of preset arrays according to the preset array names;
classifying the array information into a plurality of preset arrays according to the corresponding relation between the array name of the array and the preset array name and the corresponding relation between the array name of the array and the array information of the array;
and determining video playback data according to the plurality of preset arrays and the array information corresponding to the preset arrays.
9. A computer device, characterized in that the computer device comprises a processor, a memory, and a computer program stored on the memory and executable by the processor, wherein the computer program, when executed by the processor, implements the steps of the method for reading video playback data according to any one of claims 1 to 8.
10. A computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, wherein the computer program, when executed by a processor, implements the steps of the method for reading video playback data according to any one of claims 1 to 8.
CN202211353023.1A 2022-11-01 2022-11-01 Method and device for reading video playback data and storage medium Pending CN115827574A (en)

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CN202211353023.1A CN115827574A (en) 2022-11-01 2022-11-01 Method and device for reading video playback data and storage medium

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Application Number Priority Date Filing Date Title
CN202211353023.1A CN115827574A (en) 2022-11-01 2022-11-01 Method and device for reading video playback data and storage medium

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