CN110753262A - Method and device for silencing video data - Google Patents
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- CN110753262A CN110753262A CN201810821923.1A CN201810821923A CN110753262A CN 110753262 A CN110753262 A CN 110753262A CN 201810821923 A CN201810821923 A CN 201810821923A CN 110753262 A CN110753262 A CN 110753262A
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- 230000030279 gene silencing Effects 0.000 title claims abstract description 94
- 238000000034 method Methods 0.000 title claims abstract description 57
- 230000003287 optical effect Effects 0.000 claims description 20
- 238000004806 packaging method and process Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 description 21
- 238000010586 diagram Methods 0.000 description 10
- 238000011084 recovery Methods 0.000 description 4
- 238000005538 encapsulation Methods 0.000 description 3
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- 238000004891 communication Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
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- 238000005516 engineering process Methods 0.000 description 1
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- 230000006872 improvement Effects 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/439—Processing of audio elementary streams
- H04N21/4396—Processing of audio elementary streams by muting the audio signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/439—Processing of audio elementary streams
- H04N21/4394—Processing of audio elementary streams involving operations for analysing the audio stream, e.g. detecting features or characteristics in audio streams
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
- H04N21/44008—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving operations for analysing video streams, e.g. detecting features or characteristics in the video stream
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
- H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
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Abstract
The application provides a method and a device for silencing video data, wherein the method comprises the following steps: determining a silencing time period for the first video data; decapsulating the first video data to obtain an audio frame and a video frame; and carrying out silencing treatment on the audio frames belonging to the silencing time period, and repackaging the video frames and the audio frames which are not processed by the message into second video data, thereby eliminating the audio, simultaneously reserving the video data and meeting the requirement of only shielding the audio data.
Description
Technical Field
The application relates to the technical field of audio and video processing, in particular to a method and a device for silencing video data.
Background
In some special scenarios, such as auditoriums, courts, and police authorities, besides recording video data onto an optical disc in real time during an inquiry or conversation process, it may be necessary to restore the recording of some video segments stored in the recording device onto the optical disc after the inquiry or conversation, so as to use the video segments as audio/video evidence, for example, as evidence in a court. Since some inquiry contents or talking contents are confidential and can not be disclosed in some video segments recovered and recorded in the optical disc, the silencing treatment needs to be carried out on the contents.
In the related art, in the process of restoring some video segments in the recording equipment to the optical disc, the video data of the content which cannot be disclosed is selected not to be recorded. Thus, video data is eliminated while audio is eliminated, and the requirement of only masking audio data cannot be met.
Disclosure of Invention
In view of this, the present application provides a method and an apparatus for muting video data, so as to solve the problem that the related art cannot meet the requirement of only shielding audio data.
According to a first aspect of an embodiment of the present application, there is provided a method for muting video data, the method including:
determining a silencing time period for the first video data;
decapsulating the first video data to obtain an audio frame and a video frame;
and carrying out silencing treatment on the audio frames belonging to the silencing time period, and repackaging the video frames and the audio frames which are not processed by the message into second video data.
Optionally, the determining the mute time period for the first video data may include:
playing back the first video data by running a silencing application program;
when a silencing start command is received, taking the currently returned video recording time point as a first time point, and when a silencing end command is received, taking the currently returned video recording time point as a second time point;
and if the first time point is not equal to the second time point, determining a time period between the first time point and the second time point as a silencing time period.
Optionally, the method may further comprise:
and if the first time point is equal to the second time point, outputting error prompt information.
Optionally, the determining a time period between the first time point and the second time point as a sound deadening time period may include:
displaying a time period between the first time point and the second time point according to the received silencing management command;
and acquiring a specified time period selected by a user from the displayed time periods, and determining the specified time period as the silencing time period.
Optionally, the performing the mute processing on the audio frame belonging to the mute time period may include:
extracting a video recording time point carried by an audio frame of the unpackaged first video data, wherein the video recording time point refers to a time point for recording the audio frame;
and deleting the audio frames corresponding to the video recording time points belonging to the silencing time period.
According to a second aspect of the embodiments of the present application, there is provided a recording data recovery system, the system including: recording equipment, hard disks and optical disks;
the hard disk is used for storing first video data;
the recording equipment is used for determining a silencing time period for the first video data after the first video data is read from the hard disk; decapsulating the first video data to obtain an audio frame and a video frame; and carrying out silencing treatment on the audio frames belonging to the silencing time period, repackaging the video frames and the audio frames which are not subjected to silencing treatment into second video data, and restoring and burning the second video data into the optical disk.
According to a third aspect of the embodiments of the present application, there is provided a sound-deadening apparatus for video data, the apparatus including:
the determining module is used for determining a silencing time period for the first video data;
the decapsulation module is used for decapsulating the first video data to obtain audio frames and video frames;
the silencing module is used for carrying out silencing treatment on the audio frames belonging to the silencing time period;
and the packaging module is used for repackaging the video frames and the audio frames which are not processed by the messages into second video data.
Optionally, the determining module may be specifically configured to play back the first video data by running a mute processing application; when a silencing start command is received, taking the currently returned video recording time point as a first time point, and when a silencing end command is received, taking the currently returned video recording time point as a second time point; and if the first time point is not equal to the second time point, determining a time period between the first time point and the second time point as a silencing time period.
Optionally, the apparatus may further include:
and the error prompt module is used for outputting error prompt information if the first time point is equal to the second time point.
Optionally, the determining module may be further specifically configured to, in a process of determining a time period between the first time point and the second time point as a silencing time period, display the time period between the first time point and the second time point according to a received silencing management command; and acquiring a specified time period selected by a user from the displayed time periods, and determining the specified time period as the silencing time period.
Optionally, the silence module may be specifically configured to extract a recording time point carried by an audio frame of the decapsulated first video data, where the recording time point refers to a time point for recording the audio frame; and deleting the audio frames corresponding to the video recording time points belonging to the silencing time period.
According to a fourth aspect of embodiments of the present application, there is provided a recording apparatus, including a readable storage medium and a processor;
wherein the readable storage medium is configured to store machine executable instructions;
the processor is configured to read the machine executable instructions on the readable storage medium and execute the instructions to implement the steps of the method for muting video data.
By applying the embodiment of the application, after the silencing time period is determined for the first video data, the first video data is de-encapsulated to obtain the video frame and the audio frame, the audio frame belonging to the silencing time period is silenced, and the video frame and the audio frame which is not silenced are re-encapsulated to be the second video data, so that the video data is reserved while the audio is eliminated, and the requirement of only shielding the audio data can be met.
Drawings
FIG. 1 is a block diagram of a recording data recovery system according to an exemplary embodiment of the present application;
FIG. 2 is a flowchart illustrating an embodiment of a method for muting video data according to an exemplary embodiment of the present application;
FIG. 3A is a flowchart illustrating another embodiment of a method for muting recorded data according to an exemplary embodiment of the present application;
FIG. 3B is a schematic illustration of an interface for determining a muffling time period according to the embodiment shown in FIG. 3A;
FIG. 3C is a schematic view of an interface showing a muffling time period according to the embodiment of FIG. 3A;
FIG. 3D is a schematic diagram illustrating an interface for resuming recording mode selection according to the embodiment shown in FIG. 3A;
FIG. 4 is a block diagram of a hardware of a recording apparatus according to an exemplary embodiment of the present disclosure;
fig. 5 is a block diagram illustrating an embodiment of a sound-suppressing apparatus for video data according to an exemplary embodiment of the present application.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application 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 herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present application. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
Fig. 1 is a block diagram of a recording data recovery system according to an exemplary embodiment of the present application, and as shown in fig. 1, the system includes a recording device, a hard disk, and an optical disc. The hard disk is used for storing first video data; the recording equipment is used for determining a silencing time period for the first video data after reading the first video data from the hard disk, then decapsulating the first video data to obtain an audio frame and a video frame, performing silencing processing on the audio frame belonging to the silencing time period, finally repackaging the video frame and the audio frame which is not subjected to silencing processing into second video data, and restoring and recording the second video data into the optical disk. Therefore, for recovering the second video data recorded in the optical disk, the video data is reserved while audio is eliminated, and the requirement of only shielding the audio data can be met.
In an optional implementation manner, in the process of determining the mute time period for the first video data, the recording device may play back the first video data by running a mute processing application, and when receiving a mute start command, take a current playback video time point as a first time point, and when receiving a mute end command, take a current playback video time point as a second time point, and if the first time point is not equal to the second time point, determine a time period between the first time point and the second time point as the mute time period.
In an optional implementation manner, in the process that the recording device determines a time period between the first time point and the second time point as the silencing time period, the recording device may display the time period between the first time point and the second time point according to the received silencing management command; and acquiring a specified time period selected by a user from the displayed time periods, and determining the specified time period as a silencing time period.
In an optional implementation manner, in the process of performing silencing processing on an audio frame belonging to a silencing time period, a recording device may extract a recording time point carried by the audio frame of the decapsulated first video data, where the recording time point refers to a time point at which the audio frame is recorded; and deleting the audio frames corresponding to the video recording time points belonging to the silencing time period.
In an optional implementation manner, the system may further include a camera connected to the recording device, where the camera may be configured to capture audio and video of a query or conversation during a case handling process, transmit the captured audio and video to the recording device, and store the audio and video encoded into video data in the hard disk by the recording device.
The video cameras can comprise a command camera, a signature camera, a panoramic camera, a close-up camera and a remote submission camera which are used for shooting different scenes, wherein the command camera is used for shooting scenes of a command center, the signature camera is used for shooting bookmakers in an interrogation room, the remote submission camera is used for shooting audios and videos of a person to be submitted, and the recording equipment can be accessed into the three cameras through the Ethernet; the panoramic camera is used for shooting the panorama of the whole interrogation room, the close-up camera is used for shooting the person to be interrogated in the interrogation room, and the recording equipment can be accessed into the two cameras through the video input port. The recording equipment can synthesize the videos of all the cameras in picture, and after audio is subjected to audio mixing, the audio is coded into video data with a specific format.
It should be noted that the recording recovery system shown in fig. 1 may further include a sound pickup, a demonstration display, a temperature and humidity display screen, an alarm button, a remote control client, and the like according to actual application requirements.
The following describes the method for muting the video data in detail with a specific embodiment.
Fig. 2 is a flowchart illustrating an embodiment of a method for muting recorded data according to an exemplary embodiment of the present application, where the method for muting recorded data can be applied to the recording device illustrated in fig. 1, and the embodiment of the present application can be implemented by an application installed on the recording device. As shown in fig. 2, the method for muting recorded data includes the following steps:
step 201: and determining a silencing time period for the first video data, and decapsulating the first video data to obtain an audio frame and a video frame.
For the process of determining the mute period for the first recorded data, reference may be made to the following description of the embodiment shown in fig. 3A, which will not be described in detail herein.
In one example, the determined silencing time period may be one or more, and there may be an overlap between the silencing time periods.
In another example, for a process of decapsulating first video data to obtain an audio frame and a video frame, the first video data may be read from a hard disk, where the video data is formed by encapsulating an encoded audio stream and an encoded video stream, the encoded audio stream is formed by a plurality of audio frames, and the encoded video stream is formed by a plurality of video frames, so that the read first video data may be sent to a decapsulation library, and the decapsulation module in the decapsulation library decapsulates the first video data to decapsulate the first video data into a bare stream to distinguish the audio stream from the video stream, thereby obtaining the plurality of audio frames and the plurality of video frames.
As will be appreciated by those skilled in the art, the decapsulation module may implement decapsulation processing on video data by using related technologies.
Step 202: and carrying out silencing treatment on the audio frames belonging to the silencing time period, and repackaging the video frames and the audio frames which are not subjected to silencing treatment into second video data.
In an embodiment, in a process of performing a muting process on an audio frame belonging to the muting time period, a recording time point carried by the audio frame of the decapsulated first video data may be extracted first, where the recording time point refers to a time point for recording the audio frame, and then the audio frame corresponding to the recording time point belonging to the muting time period may be deleted.
In an example, after the audio frames belonging to the mute time period are muted, all the video frames obtained by decapsulating the audio frames that are not muted may be repackaged into the second video data, that is, the muted video data, by the encapsulation module in the transencapsulation library.
It will be appreciated by those skilled in the art that the encapsulation module may implement the encapsulation process for audio and video frames via related techniques.
In the embodiment of the application, after the mute time period is determined for the first video data, the first video data is decapsulated to obtain the video frame and the audio frame, the audio frame belonging to the mute time period is muted, and the video frame and the audio frame which is not muted are encapsulated into the second video data again, so that the video data is retained while audio is eliminated, and the requirement of only shielding the audio data can be met.
Fig. 3A is a flowchart of another embodiment of a method for muting video data according to an exemplary embodiment of the present application, which is exemplarily illustrated on the basis of the embodiment shown in fig. 2, and how to determine a muting time period for the first video data, where the method for muting video data may further include the following steps:
step 301: and playing back the first video data by running the silencing application program.
Step 302: and when a sound attenuation starting command is received, taking the currently played back video recording time point as a first time point.
Step 303: and when a sound attenuation ending command is received, taking the currently played back video recording time point as a second time point.
Step 304: and if the first time point is not equal to the second time point, determining a time period between the first time point and the second time point as a silencing time period.
For the above processes from step 301 to step 304, after the sound-deadening application program is started, the recorded video data to be restored can be opened and played back through the sound-deadening application program, if audio in one or more time periods needs to be eliminated, a sound-deadening button can be triggered by dragging the progress bar to a certain time point or playing back to a certain time point, and then a sound-deadening button is triggered to end by dragging the progress bar to a certain time point or playing back to a certain time point, thereby completing the setting of a sound-deadening time period.
Wherein, every amortization time quantum need trigger once amortization start button and amortization end button, and can have the overlap between the amortization time quantum of difference.
It should be noted that after the first video data is selected, a mute time period may be configured for the first video data in advance, instead of determining the mute time period by playing back the first video data.
In an embodiment, for a process of determining a time period between a first time point and a second time point as a sound deadening time period, the time period between the first time point and the second time point may be displayed according to the received sound deadening management command; and acquiring a specified time period selected by a user from the displayed time periods, and determining the specified time period as a silencing time period.
After the sound deadening processing application program plays back the video data, when the sound deadening time period is determined, the set time period can be displayed in a list mode according to the received sound deadening management command, and a user can select the required sound deadening time period in a check mode.
Step 305: and if the first time point is equal to the second time point, outputting error prompt information.
It should be noted that, after the second video data is obtained, the second video data can be restored to be recorded in the optical disc. When recording is resumed, recording the recording data after noise reduction to one optical disk can be resumed through the selected single optical disk resuming mode, or recording the recording data after noise reduction to two optical disks can be resumed through the selected double optical disk resuming mode.
For the processes shown in the above steps 301 to 305, in an exemplary scenario, fig. 3B is an interface schematic diagram for determining a silencing time period shown in the embodiment shown in fig. 3A, and as shown in fig. 3B, dragging a progress bar once or playing back to a certain time point triggers a "start silencing" button once, dragging a progress bar once again or playing back to a certain time point triggers a "finish silencing" button once again, completes the setting of a silencing time period, and so on until the setting of all silencing time periods is completed according to actual requirements. The sound deadening period shown on the progress bar in fig. 3B has a sound deadening period 1 and a sound deadening period 2.
Fig. 3C is an interface schematic diagram showing a silencing time period according to the embodiment shown in fig. 3A, where after the user triggers the "manage" button shown in fig. 3B, the user receives a silencing management command and shows the set silencing time periods shown in fig. 3C, where there are 2 silencing time periods shown in fig. 3C, and the user may select a final required silencing time period in a checking manner.
Fig. 3D is an interface schematic diagram of a resume recording mode selection according to the embodiment shown in fig. 3A, where after the user triggers the "resume" button shown in fig. 3C, the interface for selecting a resume recording mode shown in fig. 3D is displayed, and after the user can select a single-disc mode or a dual-disc mode, the "confirm" button is triggered to enter a mute processing procedure, and the second video data after being muted is resumed and recorded in one optical disc or two optical discs in real time.
To this end, the flow shown in fig. 3A is completed, and a flow of determining a mute period for the first video data is realized.
FIG. 4 is a block diagram of hardware of a recording apparatus according to an exemplary embodiment of the present application, the recording apparatus including: a communication interface 401, a processor 402, a machine-readable storage medium 403, and a bus 404; wherein the communication interface 401, the processor 402 and the machine-readable storage medium 403 communicate with each other via a bus 404. The processor 402 may execute the video data muting method described above by reading and executing machine-executable instructions in the machine-readable storage medium 402 corresponding to the control logic of the video data muting method, which is described in detail with reference to the above embodiments and will not be described again here.
The machine-readable storage medium 403 referred to herein may be any electronic, magnetic, optical, or other physical storage device that can contain or store information such as executable instructions, data, and the like. For example, the machine-readable storage medium may be: a RAM (random Access Memory), a volatile Memory, a non-volatile Memory, a flash Memory, a storage drive (e.g., a hard drive), any type of storage disk (e.g., an optical disk, a dvd, etc.), or similar storage medium, or a combination thereof.
Fig. 5 is a block diagram illustrating an embodiment of a video data muting apparatus according to an exemplary embodiment of the present application, where, as shown in fig. 5, the video data muting apparatus includes:
a determining module 510, configured to determine a mute time period for the first video data;
a decapsulation module 520, configured to decapsulate the first video data to obtain an audio frame and a video frame;
a mute module 530, configured to perform mute processing on the audio frames belonging to the mute time period;
and an encapsulating module 540, configured to repackage the video frames and the audio frames that are not processed by the message into second video data.
In an optional implementation manner, the determining module 510 is specifically configured to play back the first video data by running a mute processing application; when a silencing start command is received, taking the currently returned video recording time point as a first time point, and when a silencing end command is received, taking the currently returned video recording time point as a second time point; and if the first time point is not equal to the second time point, determining a time period between the first time point and the second time point as a silencing time period.
In an alternative implementation, the apparatus further comprises (not shown in fig. 5):
and the error prompt module is used for outputting error prompt information if the first time point is equal to the second time point.
In an optional implementation manner, the determining module 510 is further specifically configured to, in a process of determining a time period between the first time point and the second time point as a silencing time period, display the time period between the first time point and the second time point according to a received silencing management command; and acquiring a specified time period selected by a user from the displayed time periods, and determining the specified time period as the silencing time period.
In an optional implementation manner, the silence module 530 is specifically configured to extract a recording time point carried by an audio frame of the decapsulated first video data, where the recording time point refers to a time point for recording the audio frame; and deleting the audio frames corresponding to the video recording time points belonging to the silencing time period.
The implementation process of the functions and actions of each unit in the above device is specifically described in the implementation process of the corresponding step in the above method, and is not described herein again.
For the device embodiments, since they substantially correspond to the method embodiments, reference may be made to the partial description of the method embodiments for relevant points. The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the scheme of the application. One of ordinary skill in the art can understand and implement it without inventive effort.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus 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 apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the scope of protection of the present application.
Claims (12)
1. A method for muting video data, the method comprising:
determining a silencing time period for the first video data;
decapsulating the first video data to obtain an audio frame and a video frame;
and carrying out silencing treatment on the audio frames belonging to the silencing time period, and repackaging the video frames and the audio frames which are not processed by the message into second video data.
2. The method of claim 1, wherein determining a mute time period for the first video cassette recording data comprises:
playing back the first video data by running a silencing application program;
when a silencing start command is received, taking the currently returned video recording time point as a first time point, and when a silencing end command is received, taking the currently returned video recording time point as a second time point;
and if the first time point is not equal to the second time point, determining a time period between the first time point and the second time point as a silencing time period.
3. The method of claim 2, further comprising:
and if the first time point is equal to the second time point, outputting error prompt information.
4. The method of claim 2, wherein determining a time period between the first point in time and the second point in time as a sound deadening time period comprises:
displaying a time period between the first time point and the second time point according to the received silencing management command;
and acquiring a specified time period selected by a user from the displayed time periods, and determining the specified time period as the silencing time period.
5. The method of claim 1, wherein the muting the audio frames belonging to the muting time period comprises:
extracting a video recording time point carried by an audio frame of the unpackaged first video data, wherein the video recording time point refers to a time point for recording the audio frame;
and deleting the audio frames corresponding to the video recording time points belonging to the silencing time period.
6. A system for recovering recorded video data, the system comprising: recording equipment, hard disks and optical disks;
the hard disk is used for storing first video data;
the recording equipment is used for determining a silencing time period for the first video data after the first video data is read from the hard disk; decapsulating the first video data to obtain an audio frame and a video frame; and carrying out silencing treatment on the audio frames belonging to the silencing time period, repackaging the video frames and the audio frames which are not subjected to silencing treatment into second video data, and restoring and burning the second video data into the optical disk.
7. An apparatus for muting video data, the apparatus comprising:
the determining module is used for determining a silencing time period for the first video data;
the decapsulation module is used for decapsulating the first video data to obtain audio frames and video frames;
the silencing module is used for carrying out silencing treatment on the audio frames belonging to the silencing time period;
and the packaging module is used for repackaging the video frames and the audio frames which are not processed by the messages into second video data.
8. The apparatus of claim 7, wherein the determining module is specifically configured to play back the first video data by running a mute application; when a silencing start command is received, taking the currently returned video recording time point as a first time point, and when a silencing end command is received, taking the currently returned video recording time point as a second time point; and if the first time point is not equal to the second time point, determining a time period between the first time point and the second time point as a silencing time period.
9. The apparatus of claim 8, further comprising:
and the error prompt module is used for outputting error prompt information if the first time point is equal to the second time point.
10. The apparatus according to claim 8, wherein the determining module is further specifically configured to, during the determination of the time period between the first time point and the second time point as the sound deadening time period, display the time period between the first time point and the second time point according to the received sound deadening management command; and acquiring a specified time period selected by a user from the displayed time periods, and determining the specified time period as the silencing time period.
11. The apparatus of claim 7, wherein the muting module is specifically configured to extract a recording time point carried by an audio frame of the decapsulated first video data, where the recording time point refers to a time point at which the audio frame is recorded; and deleting the audio frames corresponding to the video recording time points belonging to the silencing time period.
12. A recording apparatus comprising a readable storage medium and a processor;
wherein the readable storage medium is configured to store machine executable instructions;
the processor configured to read the machine executable instructions on the readable storage medium and execute the instructions to implement the steps of the method of any one of claims 1-5.
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