WO2017181969A1

WO2017181969A1 - Playback control method and device

Info

Publication number: WO2017181969A1
Application number: PCT/CN2017/081262
Authority: WO
Inventors: 梁国柱
Original assignee: 中兴通讯股份有限公司
Priority date: 2016-04-20
Filing date: 2017-04-20
Publication date: 2017-10-26
Also published as: CN107306358A

Abstract

The application provides a playback control method and device. The method comprises: determining, according to material information of a multimedia file, a content class of the multimedia file, and performing, according to the content class, playback control on the multimedia file; wherein the content class is used to indicate that the multimedia file is suitable to be played back for a group of users. The invention resolves a problem of low playback control efficiency of multimedia files in the prior art, thereby achieving the effects of dynamically identification and intelligently control during playback of multimedia files.

Description

Play control method and device

Technical field

The present application relates to the field of multimedia file playback, and for example, to a playback control method and apparatus.

Background technique

As we all know, video and video content may contain violence, pornography and other unsuitable children. If the content is not graded and controlled, unsuitable videos will cause serious harm to the viewers who do not meet the viewing conditions, especially the physical and mental health of young children. . In the current IPTV/OTT system, the content level is written into the database by the manual or interface machine before the content is online. When the user plays the video content, the system first determines the content level, and then performs related child lock control. .

There are a number of drawbacks to the above implementation. The first is the risk of errors in the level entry before the content goes online. In many countries in Europe and America, there is a strict content classification review system, which makes a strict distinction between different types of audience. However, in many countries (especially many Asian countries), the level review system for video content is not perfect. There is no clear video content rating, which will inevitably lead to inaccurate content levels. For example, the level of entry is normal, but the video content may still be There are scenes such as violence and pornography.

Secondly, the content level review in advance is aimed at some film and television works. Today, since the explosive growth of the media, many videos are uploaded by web users, and there is no way to conduct a hierarchical review of all video content. This will lead to the inability to perform precise child lock control, which will cause confusion for parents.

Based on the above drawbacks, the system child lock control mode in the related art can not meet the needs of our child lock control. However, no effective solution has been found for the above problems in the related art.

Summary of the invention

The present disclosure provides a playback control method and apparatus to at least solve the problem of low efficiency of playback control of multimedia files in the related art.

According to an aspect of the present disclosure, a playback control method is provided, including: according to a multimedia text The material information of the piece determines the content level of the multimedia file, and performs playback control on the multimedia file according to the content level; wherein the content level is used to represent a user range suitable for playing the multimedia file.

The method may further include: collecting the material information from content of the multimedia file.

Collecting the material information from the content of the multimedia file may include: capturing a picture of the multimedia file and generating a sample picture; and/or, acquiring audio information of the multimedia file; and/or extracting subtitle information of the multimedia file .

Determining the content level of the multimedia file according to the material information may include: identifying whether there is sensitive information in the material information, the sensitive information is information that is only suitable for a preset range of users to play; and the existence of the material information When the sensitive information is described, the content level of the multimedia file is determined according to a preset database.

The playing control of the multimedia file according to the content level may include: acquiring a user range to which the viewing object of the multimedia file belongs; and a user corresponding to the content level of the multimedia file that belongs to the user object to which the viewing object belongs When the range is reached, the playback of the multimedia file is stopped.

After the multimedia file is stopped, the method may further include: feeding back a prompt information for inputting an unlock password to the playing terminal of the multimedia file; and continuing to play the multimedia file after receiving the unlock password.

Collecting the material information from the content of the multimedia file may include: collecting the material information from the to-be-played content of the multimedia file during the playing of the multimedia file.

The sensitive information may include at least one of: pornographic-related information, violence-related information, drug-related information, terror-related information, and swearing-related information.

According to another aspect of the present disclosure, a playback control apparatus is provided, including: a determination module configured to determine a content level of the multimedia file according to material information of a multimedia file; wherein the content level is used to characterize playback a user range of the multimedia file; and a control module configured to perform playback control on the multimedia file according to the content level.

The apparatus can also include an acquisition module configured to retrieve the material information from content of the multimedia file.

The acquisition module may further include: an intercepting unit configured to intercept a picture of the multimedia file and generate a sample picture; and/or an admission unit configured to take audio information of the multimedia file; And/or an extracting unit configured to extract subtitle information of the multimedia file.

The control module may further include: an obtaining unit configured to acquire a user range to which the viewing object of the multimedia file belongs; the first control unit configured to not belong to the content of the multimedia file in a range of users to which the viewing object belongs When the user range of the level corresponds, the multimedia file is stopped from playing.

The control module may further include: a feedback unit configured to: after the first control unit stops playing the multimedia file, feed back a prompt information for inputting an unlock password to the playing terminal of the multimedia file; and the second control unit, It is configured to continue playing the multimedia file after receiving the unlock password.

Embodiments of the present disclosure also provide a non-transitory computer readable storage medium storing computer executable instructions arranged to perform the above method.

An embodiment of the present disclosure further provides an electronic device, including:

At least one processor;

a memory communicatively coupled to the at least one processor; wherein

The memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to cause the at least one processor to perform the method described above.

Through the present disclosure, the material information is collected from the content of the multimedia file, and then the content level of the multimedia file is determined according to the material information, wherein the content level is used to represent a user range suitable for playing the multimedia file. Finally, the multimedia file is played and controlled according to the content level, and the multimedia file content is dynamically collected and played back to control, thereby eliminating the problem of mis-casting due to incorrect classification of the multimedia file, and solving the playback control efficiency of the multimedia file in the related technology. The low problem, in turn, achieves the effect of dynamic recognition and intelligent control during the playback of multimedia files, creating a healthy and orderly multimedia file playback environment, and achieving the beneficial effect of effectively protecting the physical and mental health of adolescents.

BRIEF abstract

The drawings described herein are intended to provide an understanding of the present disclosure, and are intended to be a part of the present disclosure. In the drawing:

FIG. 1 is a flowchart of a playback control method according to an embodiment of the present disclosure;

2 is a block diagram showing the structure of a playback control apparatus according to an embodiment of the present disclosure;

3 is a block diagram 1 of an optional structure of a playback control device according to an embodiment of the present disclosure;

4 is a block diagram 2 of an optional structure of a playback control device according to an embodiment of the present disclosure;

FIG. 5 is a block diagram 3 of an optional structure of a playback control apparatus according to an embodiment of the present disclosure; FIG.

6 is a system configuration diagram in accordance with an alternative embodiment of the present disclosure;

7 is a flowchart of a child lock intelligent control for video dynamic recognition according to an alternative embodiment of the present disclosure;

FIG. 8 is a schematic diagram of prompting a user to input a child lock password according to an alternative embodiment of the present disclosure;

FIG. 9 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure.

detailed description

The present disclosure will be described in detail below with reference to the drawings in conjunction with the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

It is to be understood that the terms "first", "second", and the like in the specification and claims of the present disclosure are used to distinguish similar objects, and are not necessarily used to describe a particular order or order.

In this embodiment, a playback control method is provided. The method in this embodiment can be applied to a playback environment of multimedia files such as IPTV (Internet Protocol Television) and Internet TV (OTT, Over The Top). Is a flowchart of a playback control method according to an embodiment of the present disclosure. As shown in FIG. 1, the flow includes the following steps:

Step S102, collecting material information from content of the multimedia file;

Step S104, determining a content level of the multimedia file according to the material information, where the content level is used to represent a user range suitable for playing the multimedia file;

Step S106: Perform playback control on the multimedia file according to the content level.

Through the above steps, the material information is collected from the content of the multimedia file, and then the content level of the multimedia file is determined according to the material information, wherein the content level is used to represent the suitable multimedia The user scope of the file is finally controlled by the multimedia file according to the content level. By dynamically collecting the content of the multimedia file and playing the control, the problem of mis-casting due to incorrect classification of the multimedia file is eliminated, and the playback control of the multimedia file in the related technology is solved. The problem of low efficiency has achieved the effect of dynamic recognition and intelligent control during multimedia file playback, creating a healthy and orderly multimedia file playback environment, and achieving beneficial effects for effectively protecting the physical and mental health of adolescents.

In this embodiment, the content level may be information indicating the health degree of the multimedia file, and may be different standards in different country regions. Of course, the configuration may also be performed. The content level is exemplified by an example of the current US movie rating. Similar in other standards or in standards that are set by themselves:

GENERAL AUDIENCES All ages admitted.: Public, all ages can watch the public, suitable for people of all ages - this level of film content can be accepted by parents, the film is not nude, sex scenes, drug abuse and There are very few violent scenes. Dialogue is also a constant contact in everyday life;

PARENTAL GUIDANCE SUGGESTED Some material may not be suitable for children.: Normal level, it is recommended to watch with the parents, some pictures may make children feel uncomfortable. Counseling level, some content may not be suitable for children to watch - this level of film basically has no sex, drug and nude scenes, even if there is time is short, in addition, the scene of terror and violence will not exceed the appropriate range.

PAR-13 (PARENTS STRONGLY CAUTIONED Some material may be inappropriate for children under 13.): Special counseling level, children under the age of 13 should be accompanied by their parents, some content is not suitable for children - this level of film is not rough Continuous violence shots, generally no nude shots, sometimes with drug-using lenses and swearing.

RESTRICTED Under 17 requires accompanying parent or adult guardian.: Restricted level, viewers under 17 years old are required to be accompanied by parents or adults - this level of video contains adult content, which has more sex, violence, drug abuse / Excessive blood and other scenes and swearing. When this type of film is released in some countries, it will be rated as a 15-year-old and 16-year-old movie.

NO ONE 17 AND UNDER ADMITTED: No viewing is allowed for viewers 17 and under - this level of film is classified as an adult film and minors are strictly prohibited from viewing. There are clear scenes of sex in the film, a lot of drugs or violent shots and swearing, etc., which are not suitable for playing in the theater. In general, such a movie will lose some of the youth audience.

The user can set the user level through the terminal, that is, the viewing object of the multimedia file belongs to The user range and the level corresponding to the user level are also divided into five levels of G, PG, PG-13, R, and NC-17 described above. If the user level is lower than the content level, for example, the user level is PG-13, when the user views the content of the R and NC-17 levels, the unlock password is required to be unlocked before being viewed.

When dividing the content level, and determining the user scope, it can be divided not only according to age, but also according to the gender, religion, education level, etc. of the user, corresponding to different user ranges.

In this embodiment, the material information may be determined according to the type of the multimedia file. When the multimedia file is a video file, the material information may include: a picture, an audio, a subtitle, and when the multimedia file is an audio file (such as a broadcast), the material Information can only include audio. In an optional implementation manner of the embodiment, collecting the material information from the content of the multimedia file includes: capturing a picture of the multimedia file and generating a sample picture; acquiring audio information of the multimedia file; and extracting the subtitle information of the multimedia file.

In this embodiment, collecting the material information from the content of the multimedia file includes: collecting material information from the to-be-played content of the multimedia file during the playing of the multimedia file. Optionally, the multimedia file may also be the picture being played, or, in the case that the complete multimedia file has not started to be played, the material information is started to be collected. Through the dynamic collection and recognition of the embodiment, the recognition efficiency of the multimedia file can be improved.

In an optional implementation manner according to the embodiment, determining the content level of the multimedia file according to the material information includes:

S11, identifying whether there is sensitive information in the material information, and the sensitive information is information that is only suitable for the user in the preset range;

S12: When there is sensitive information in the material information, determine a content level of the multimedia file according to the preset database.

Optionally, the sensitive information includes at least one of the following: pornographic-related information, violence-related information, drug-related information, terror-related information, and swearing-related information. The preset image recognition, speech recognition and sensitive word recognition engine can be used to identify and contrast the identification engine through the algorithm to confirm whether the multimedia file has violence, pornography, etc., and then confirm the content level category to which the movie belongs according to the preset database. .

In an optional implementation manner according to the embodiment, the playing control of the multimedia file according to the content level includes:

S21. Acquire a range of users to which the viewing object of the multimedia file belongs;

S22. Stop playing the multimedia file when the range of users to which the viewing object belongs does not belong to the user range corresponding to the content level of the multimedia file.

Optionally, after the user stops playing the multimedia file, when the user wants to continue to view the multimedia content, or when the user scope of the viewing object is determined to be incorrect, the optional implementation manner may further include:

S22. Feed back, to the playing terminal of the multimedia file, prompt information for inputting an unlocking password;

S23. After receiving the unlock password, continue to play the multimedia file.

Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware. Based on such understanding, the technical solution of the present disclosure, which is essential or contributes to the related art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk, CD-ROM). The instructions include a number of instructions for causing a terminal device (which may be a cell phone, computer, server, or network device, etc.) to perform the methods of various embodiments of the present disclosure.

In this embodiment, a playback control device is also provided, which may be disposed in a playback control system of a multimedia file, such as in a set top box of a television. The device is configured to implement the foregoing embodiments and implementations, and has been performed. The description will not be repeated. As used below, the term "module" may implement a combination of software and/or hardware of a predetermined function. Although the devices described in the following embodiments are implemented in software, hardware, or a combination of software and hardware, is also possible and conceivable.

2 is a structural block diagram of a playback control apparatus according to an embodiment of the present disclosure. As shown in FIG. 2, the apparatus includes:

The collecting module 20 is configured to collect the material information from the content of the multimedia file;

The determining module 22 is configured to determine a content level of the multimedia file according to the material information, wherein the content level is used to represent a range of users suitable for playing the multimedia file;

The control module 24 is configured to perform playback control on the multimedia file according to the content level.

FIG. 3 is a block diagram of an optional structure of a playback control apparatus according to an embodiment of the present disclosure. As shown in FIG. 3, the acquisition module 20 includes:

The intercepting unit 30 is configured to intercept a picture of the multimedia file and generate a sample picture;

The admission unit 32 is configured to take audio information of the multimedia file;

The extracting unit 34 is configured to extract subtitle information of the multimedia file.

4 is a block diagram 2 of an optional structure of a playback control device according to an embodiment of the present disclosure. As shown in FIG. 4, the control module 24 includes, in addition to all the modules shown in FIG.

The obtaining unit 40 is configured to acquire a user range to which the viewing object of the multimedia file belongs;

The first control unit 42 is configured to stop playing the multimedia file when the range of users to which the viewing object belongs does not belong to the user range corresponding to the content level of the multimedia file.

FIG. 5 is a block diagram 3 of an optional structure of a playback control apparatus according to an embodiment of the present disclosure. As shown in FIG. 5, the control module 24 includes, in addition to all the modules shown in FIG.

The feedback unit 50 is configured to, after the first control unit stops playing the multimedia file, feed back the prompt information for inputting the unlock password to the playing terminal of the multimedia file;

The second control unit 52 is configured to continue playing the multimedia file after receiving the unlock password.

The following is described in detail in conjunction with an alternative embodiment in accordance with the present disclosure:

The optional embodiment dynamically identifies the smart child lock control system device based on the video scene, and includes: a sampling module, a smart identification center, and a child lock control module.

The sampling module is responsible for dynamic collection of video, audio, subtitles and the like during video playback, including video capture and generation of pictures, audio voice collection and translation (supporting multiple languages), subtitle extraction and translation, and then sampling The module transfers the collected material to the intelligent identification center through files;

The intelligent identification center is the nerve center of the whole system, and can be responsible for intelligent analysis and contrast identification of the materials collected by the sampling module. The intelligent recognition center presets a powerful image recognition, speech recognition and sensitive word recognition engine. The algorithm recognizes and contrasts the recognition engine to confirm whether the video content has violence, pornography, etc., and then confirms the film according to the comparison library preset by the system. The content level category that belongs to, and finally transmits the recognition result to the child lock control module;

The child lock control module can be deployed in the UI layer of the display user interface, and is responsible for controlling the child lock control (equivalent to the play control) viewed by the user. After receiving the content level recognition result transmitted in the smart identification, the module compares the content level with the user level, and determines whether the user level set by the current user can directly view the video content, thereby determining whether to perform child lock control. If the user level is greater than or equal to the content level, the user can continue to watch; otherwise, the video is closed and the child lock password input page is prompted to prompt the user to input the child lock password, and the user is allowed to continue watching after inputting the child lock password.

With the optional embodiment, the child lock intelligent control based on the dynamic recognition of the video scene can perform dynamic intelligent recognition for any video content. Compared with related technologies, it overcomes the shortcomings of the current mainstream implementation of child lock control, and expands and strengthens it. The invention overcomes the problems and defects that the content level classification in the related art is incorrect and cannot be dynamically recognized, and provides a method and device for dynamic recognition and child lock intelligent control in playing video. During the process of playing video, based on the video scene, through the dynamic recognition of the video picture, subtitles, and voice, the content level of the current movie is accurately calculated according to the content level defined by the system, thereby realizing the intelligent control of the child lock.

Embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings.

FIG. 6 is a structural diagram of a system according to an alternative embodiment of the present disclosure, as shown in FIG. 6, illustrating the structure of the system. The sampling module is deployed in the terminal (not limited to the set top box), and the collected video, audio and subtitle samples are uploaded to the intelligent identification center; after receiving the content collection material, the intelligent recognition center is identified and contrasted by image recognition, speech recognition and sensitive word recognition engine. After that, the content level is calculated and the child lock control module is notified; the child lock control module determines whether the child lock control is needed according to the comparison user level and the content level, and notifies the terminal of the result; if the terminal receives the instruction, if the child lock needs to be input After watching, the terminal will stop the video playback and pop up the child lock input page. After the user enters the correct child lock password, the video resumes playing from the time point just stopped; if you do not need to enter the child lock to watch, the video will play normally.

FIG. 7 is a flowchart of a child lock intelligent control for video dynamic recognition according to an alternative embodiment of the present disclosure. As shown in FIG. 7 , combined with the content shown in FIG. 7 , the child lock intelligent control process for video dynamic recognition includes:

In the first step, when the video starts playing, the terminal will start the sampling module to work at the same time. During video playback, the sampling module dynamically collects video-related data according to the set sampling frequency (supporting configurability). The video image capture and generate a picture supported by the system; the voice of the video is accepted, the language type is recognized and translated into a voice file supported by the system; the subtitle of the video content is extracted, and the text information is supported by the “support multi-language translation sub-module” Translate into textual information supported by the system. Finally, the dynamic sampling material is transferred to the intelligent recognition center. The above three types of acquisitions are performed synchronously, and are described separately in order to express three ways.

In the second step, the intelligent identification center receives the file uploaded by the sampling module, starts the image recognition, speech recognition and sensitive word recognition engine, and intelligently analyzes and compares the materials collected by the sampling module. The image recognition engine is responsible for identifying the image content and comparing the preset image library to infer whether the video content has violent or pornographic content; the speech recognition engine identifies and analyzes the voice file to determine whether There are swear words, violence, racial discrimination and other content; the same sensitive word recognition engine analyzes the video content subtitles against the sensitive vocabulary, and infers whether the video content has children's inappropriate content. According to the analysis result of the above engine, the intelligent identification center confirms the content level category to which the movie belongs according to the comparison library preset by the system, and finally transmits the recognition result to the child lock control module. The recognition engine referred to herein forms part of the disclosed system and method and must, but is not limited to, the above-described identification engines, and the replacement of the recognition engine does not change the core content of the present disclosure.

The third step, after receiving the content level recognition result transmitted in the smart identification, the child lock control module compares the content level with the user level, and determines whether the user level set by the current user can directly watch the video content, thereby determining whether to perform the child. Lock control and notify the terminal of the result. If the user level is greater than or equal to the content level, the user can continue to watch; if the user level is less than the content level, then the child lock needs to be entered to continue watching.

Step 4: After receiving the dynamic recognition result, if the terminal needs to input the child lock, the terminal may stop watching the video, and the terminal stops the video playing and pops up the child lock input page. FIG. 8 is a prompting user to input the child lock according to an optional embodiment of the present disclosure. The password diagram, as shown in Figure 8, after the user enters the correct child lock password, the video resumes playing from the time point just stopped.

It should be noted that each of the above modules may be implemented by software or hardware. For the latter, the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or, the modules are located in multiple In the processor.

Embodiments of the present disclosure also provide a storage medium. Optionally, in the embodiment, the foregoing storage medium may be configured to store program code for performing the following steps:

S1, collecting material information from the content of the multimedia file;

S2. Determine a content level of the multimedia file according to the material information, where the content level is used to represent a range of users suitable for playing the multimedia file;

S3, playing control of the multimedia file according to the content level.

Optionally, in this embodiment, the foregoing storage medium may include, but not limited to, a USB flash drive, a Read-Only Memory (ROM), a Random Access Memory (RAM), a mobile hard disk, and a magnetic memory. A variety of media that can store program code, such as a disc or a disc.

Optionally, in this embodiment, the processor performs to collect the material information from the content of the multimedia file according to the stored program code in the storage medium;

Optionally, in this embodiment, the processor determines, according to the stored program code in the storage medium, the content level of the multimedia file according to the material information, where the content level is used to represent a user range suitable for playing the multimedia file;

Optionally, in this embodiment, the processor performs playback control on the multimedia file according to the content level according to the stored program code in the storage medium.

For example, the examples in this embodiment may refer to the examples described in the foregoing embodiments and the optional embodiments, and details are not described herein again.

Embodiments of the present disclosure also provide a non-transitory computer readable storage medium storing computer executable instructions arranged to perform the method of any of the above embodiments.

The embodiment of the present disclosure further provides a schematic structural diagram of an electronic device. Referring to FIG. 9, the electronic device includes:

At least one processor 90, which is exemplified by a processor 90 in FIG. 9; and a memory 91, may further include a communication interface 92 and a bus 93. The processor 90, the communication interface 92, and the memory 91 can complete communication with each other through the bus 93. Communication interface 92 can be used for information transfer. Processor 90 can invoke logic instructions in memory 91 to perform the methods of the above-described embodiments.

In addition, the logic instructions in the memory 91 described above may be implemented in the form of a software functional unit and sold or used as a stand-alone product, and may be stored in a computer readable storage medium.

The memory 91 is a computer readable storage medium and can be used to store a software program, a computer executable program, a program instruction/module corresponding to the method in the embodiment of the present disclosure. The processor 90 executes the function application and the data processing by executing software programs, instructions, and modules stored in the memory 91, that is, implementing the playback control method in the above method embodiments.

The memory 91 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application required for at least one function; the storage data area may store data created according to usage of the terminal device, and the like. In addition, the memory 91 may include a high speed random access memory, and may also include Non-volatile memory.

The technical solution of the embodiments of the present disclosure may be embodied in the form of a software product stored in a storage medium, including one or more instructions for causing a computer device (which may be a personal computer, a server, or a network) The device or the like) performs all or part of the steps of the method described in the embodiments of the present disclosure. The foregoing storage medium may be a non-transitory storage medium, including: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like. A medium that can store program code, or a transitory storage medium.

It will be apparent to those skilled in the art that the various modules or steps of the present disclosure described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module. As such, the disclosure is not limited to any specific combination of hardware and software.

The above description is only for the embodiments of the present disclosure, and is not intended to limit the disclosure, and various changes and modifications may be made to the present disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the scope of the present disclosure are intended to be included within the scope of the present disclosure.

Industrial applicability

The playback control method and device provided by the present application solves the problem of low efficiency of playback control of multimedia files in the related art, thereby achieving the effects of dynamic recognition and intelligent control during multimedia file playback.

Claims

A playback control method includes:

Determining a content level of the multimedia file according to material information of the multimedia file, and performing playback control on the multimedia file according to the content level;

The content level is used to characterize a range of users suitable for playing the multimedia file.
The method of claim 1 further comprising: collecting said material information from content of said multimedia file.
The method of claim 2, wherein the collecting the material information from the content of the multimedia file comprises:

Intercepting a picture of the multimedia file and generating a sample picture; and/or,

Acquiring audio information of the multimedia file; and/or,

Extracting subtitle information of the multimedia file.
The method of claim 2, wherein determining the content level of the multimedia file based on the material information comprises:

Identifying whether there is sensitive information in the material information, and the sensitive information is information that is only suitable for a preset range of users to play;

When the sensitive information exists in the material information, determining a content level of the multimedia file according to a preset database.
The method of claim 2, wherein the playing control of the multimedia file according to the content level comprises:

Obtaining a range of users to which the viewing object of the multimedia file belongs;

When the user range to which the viewing object belongs does not belong to the user range corresponding to the content level of the multimedia file, the playing of the multimedia file is stopped.
The method of claim 5, wherein after the playing of the multimedia file is stopped, the method further comprises:

Returning, to the playing terminal of the multimedia file, prompt information for inputting an unlocking password;

After receiving the unlock password, the multimedia file is resumed.
The method according to claim 4, wherein the sensitive information comprises at least one of: pornographic-related information, violence-related information, drug-related information, terror-related information, and swearing-related information. .
The method according to any one of claims 2 to 7, wherein the collecting the material information from the content of the multimedia file comprises:

During the playing of the multimedia file, the material information is collected from the to-be-played content of the multimedia file.
A playback control device comprising:

a determining module, configured to determine a content level of the multimedia file according to material information of the multimedia file; wherein the content level is used to represent a user range suitable for playing the multimedia file;

And a control module configured to perform playback control on the multimedia file according to the content level.
The apparatus of claim 9, further comprising an acquisition module configured to retrieve the material information from content of the multimedia file.
The device of claim 10, wherein the acquisition module further comprises:

An intercepting unit configured to intercept a picture of the multimedia file and generate a sample picture; and/or,

An admission unit configured to take audio information of the multimedia file; and/or,

And an extracting unit configured to extract subtitle information of the multimedia file.
The apparatus of claim 10, wherein the control module further comprises:

An obtaining unit configured to acquire a range of users to which the viewing object of the multimedia file belongs;

The first control unit is configured to stop playing the multimedia file when the range of users to which the viewing object belongs does not belong to a user range corresponding to the content level of the multimedia file.
The apparatus of claim 12, wherein the control module further comprises:

a feedback unit, configured to: after the first control unit stops playing the multimedia file, feed back, to the playing terminal of the multimedia file, prompt information for inputting an unlocking password;

The second control unit is configured to continue playing the multimedia file after receiving the unlock password.
A non-transitory computer readable storage medium storing computer executable instructions arranged to perform the method of any of claims 1-8.