CN114500883A - Method, device and equipment for KTV to self-control MV (music video) and computer readable storage medium - Google Patents
Method, device and equipment for KTV to self-control MV (music video) and computer readable storage medium Download PDFInfo
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- CN114500883A CN114500883A CN202210401148.0A CN202210401148A CN114500883A CN 114500883 A CN114500883 A CN 114500883A CN 202210401148 A CN202210401148 A CN 202210401148A CN 114500883 A CN114500883 A CN 114500883A
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- 238000000034 method Methods 0.000 title claims abstract description 55
- 238000004806 packaging method and process Methods 0.000 claims abstract description 14
- 230000006835 compression Effects 0.000 claims description 24
- 238000007906 compression Methods 0.000 claims description 24
- 238000004590 computer program Methods 0.000 claims description 12
- 238000005070 sampling Methods 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 238000003786 synthesis reaction Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 8
- 230000006870 function Effects 0.000 description 5
- 238000013139 quantization Methods 0.000 description 5
- 238000004891 communication Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005538 encapsulation Methods 0.000 description 2
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- 230000000644 propagated effect Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/265—Mixing
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
- G10H1/00—Details of electrophonic musical instruments
- G10H1/36—Accompaniment arrangements
- G10H1/361—Recording/reproducing of accompaniment for use with an external source, e.g. karaoke systems
Abstract
The embodiment of the application provides a method, a device, equipment and a computer readable storage medium for homemade MVs of KTVs. The method comprises the steps of acquiring video data of a user through acquisition equipment in a KTV; processing the video data through a first method to obtain image information in the video data; processing the video data through a second method to obtain audio information in the video data; and packaging the accompaniment tracks and the subtitles detached from the original video and audio file, the image information and the audio information in the video data according to the packaging format of the video and audio file to obtain the self-made MV. In this way, high quality MV production in the KTV environment is achieved.
Description
Technical Field
Embodiments of the present application relate to the field of video production, and in particular, to a method, an apparatus, a device, and a computer-readable storage medium for making MVs by KTVs.
Background
With the development of 4G and 5G technologies, the video requirements of users are increasing, the requirements of users for recording own video and audio works are increasing, and as KTV is a relatively closed place, users can only record own video and audio works by using own mobile phones.
Although the video recorded by the mobile phone has a free angle and can be freely viewed as desired by the user, the quality of the recording equipment of the user, the environmental noise of the place, the light and the like can cause poor sound and image quality of the finished product.
Disclosure of Invention
According to the embodiment of the application, a scheme for homemaking MV by KTV is provided.
In a first aspect of the application, a method for homemaking MV by KTV is provided. The method comprises the following steps:
acquiring video data of a user through acquisition equipment in the KTV;
processing the video data through a first method to obtain image information in the video data; processing the video data through a second method to obtain audio information in the video data;
and packaging the accompaniment tracks and the subtitles detached from the original video and audio file, the image information and the audio information in the video data according to the packaging format of the video and audio file to obtain the self-made MV.
Further, the processing the video data by the first method to obtain the image information in the video data includes:
and processing the video data in an intra-frame compression mode and an inter-frame compression mode to obtain image information in the video data.
Further, the intra-frame compression comprises:
dividing the video data into a plurality of macro blocks, and calculating the pixel value of each macro block;
filtering the video data based on the pixel value of each macro block, and removing high-frequency brightness data in the video to obtain a predicted image;
subtracting the video data and the predicted image to obtain a residual value;
performing integer discrete cosine transform on the residual values;
and compressing the transformed data in a CABAC compression mode to complete the intraframe compression of the video data.
Further, the inter-frame compression includes:
calculating the similarity of any two adjacent frames in the video data, and grouping the frames in the video data based on the similarity;
performing motion estimation and compensation on frames in the same group to obtain compensation data;
based on the compensation data, inter-frame compression is completed.
Further, the processing the video data by the second method to obtain the audio information in the video data includes:
sampling voice signals in the video data according to a preset sampling frequency;
quantizing the sampled signal;
and coding the quantized signal by a PCM coding mode to obtain the audio information in the video data.
Further, the accompaniment tracks and subtitles are separated from the original audio-visual file by ffmpeg.
Further, the acquiring, by a collecting device in the KTV, the video data of the user includes:
and video data of a user is acquired through VOD equipment and audio acquisition equipment in the KTV.
In a second aspect of the application, a device for making MV by KTV is provided. The device includes:
the acquisition module is used for acquiring video data of a user through acquisition equipment in the KTV;
the processing module is used for processing the video data through a first method to obtain image information in the video data; processing the video data through a second method to obtain audio information in the video data;
and the synthesis module is used for packaging the accompaniment tracks and the subtitles detached from the original audio-video file, the image information and the audio information in the video data according to the packaging format of the audio-video file to obtain the self-made MV.
In a third aspect of the present application, an electronic device is provided. The electronic device includes: a memory having a computer program stored thereon and a processor implementing the method as described above when executing the program.
In a fourth aspect of the present application, a computer-readable storage medium is provided, on which a computer program is stored which, when being executed by a processor, carries out the method as according to the first aspect of the present application.
According to the method for the KTV to self-control the MV, the video data of a user are obtained through the acquisition equipment in the KTV; processing the video data through a first method to obtain image information in the video data; processing the video data through a second method to obtain audio information in the video data; and packaging the accompaniment tracks and subtitles detached from the original audio-video file, the image information and the audio information in the video data according to the packaging format of the audio-video file to obtain a self-made MV, thereby realizing high-quality MV production in a KTV environment.
It should be understood that what is described in this summary section is not intended to limit key or critical features of the embodiments of the application, nor is it intended to limit the scope of the application. Other features of the present application will become apparent from the following description.
Drawings
The above and other features, advantages and aspects of various embodiments of the present application will become more apparent by referring to the following detailed description when taken in conjunction with the accompanying drawings. In the drawings, like or similar reference characters designate like or similar elements, and wherein:
fig. 1 shows a flow chart of a method of KTV homemade MV according to an embodiment of the present application;
fig. 2 shows a block diagram of a KTV homemade MV facility according to an embodiment of the present application;
fig. 3 shows a schematic structural diagram of a terminal device or a server suitable for implementing the embodiments of the present application.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be described clearly and completely with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are some, but not all embodiments of the present disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
In addition, the term "and/or" herein is only one kind of association relationship describing an associated object, and means that there may be three kinds of relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
Fig. 1 shows a flowchart of a method of KTV homemaking MV according to an embodiment of the present disclosure. The method comprises the following steps:
and S110, acquiring video data of a user through acquisition equipment in the KTV.
In some embodiments, the video data of the user is acquired through a KTV existing VOD device and a professional audio acquisition device; the video data comprises images acquired by VOD equipment and audio acquired by audio acquisition equipment; for example, sound data for the user microphone channel in a KTV Bay Sound effect.
S120, processing the video data through a first method to obtain image information in the video data; and processing the video data through a second method to obtain audio information in the video data.
In some embodiments, the video (raw video data) typically captured by VOD devices in KTV suites is bulky. Therefore, in the present disclosure, the following method is adopted to perform compression processing on the captured video data.
Specifically, the video data is processed in an intra-frame compression mode and an inter-frame compression mode to obtain image information in the video data;
the intra-frame compression is used for solving the spatial domain data redundancy problem and comprises the following steps:
the video data is divided into a plurality of macroblocks, preferably, a region of 16 × 16 size is used as one macroblock, and may be divided into 8 × 8 size. After the macro blocks are divided, the pixel value of each macro block is calculated. A relatively flat image may use 16 x 16 sized macroblocks.
Further, to achieve better compression rates, smaller sub-blocks may be divided over 16 × 16 macroblocks. For example, 8 × 16, 16 × 8, 8 × 8, 4 × 8, 8 × 4, etc. (selected according to the actual application scenario).
And filtering the video data based on the pixel value of each macro block, removing high-frequency brightness data (insensitive data of human eyes) in the video, and obtaining a predicted image. And subtracting the video data and the predicted image to obtain a residual value. And performing integer discrete cosine transform on the residual value to change the spatial correlation into data which is irrelevant in the frequency domain.
And compressing the transformed data in a CABAC compression mode to complete the intraframe compression of the video data. That is, low frequency data is short coded and high frequency data is long coded by CABAC compression, and compression is performed according to context correlation.
The inter-frame prediction is used for solving the problem of time domain data redundancy, and comprises the following steps:
dividing the video data into a plurality of macro blocks, taking out any two adjacent frames, comparing the macro blocks, and calculating the similarity of the two frames.
Grouping frames in the video data based on the similarity. In general, in several adjacent image frames, if the difference pixels are within 10%, the luminance variation value is not more than 2%, and the chroma value is within 1%, the two adjacent images (frames) can be grouped into one group.
Further, motion estimation and compensation are performed on frames in the same group to obtain compensation data. Completing inter-frame compression based on the compensation data; in the compensation data, the data of the first frame is complete data, and other frames can be calculated through the previous frame.
In some embodiments, the existing microphone device in the KTV box is used for sound collection, and the microphone channel data of the sound effect device needs to be input into the video-on-demand device through a cable/optical fiber and the like during the collection. The received data is analog data and therefore needs to be encoded.
Specifically, the video data is processed by a second method to obtain audio information in the video data:
and sampling the voice signals in the video data according to a preset sampling frequency. Usually, human samples with frequency identification range of 20HZ-20000HZ, CD sound quality twice as wide as the signal band, and sampling rate of 44100.
The sampled signal is quantized. Although the sampled signal is a discrete signal on a time axis, the value of the sampled signal still has an infinite number of possible values within a certain value range, and the sampled signal needs to be rounded up in a rounding manner after being classified, which is called quantization. The quantized value has a certain distortion, and the quantization distortion appears as noise when the analog signal is restored and played, and is called quantization noise, and the quantization noise is smaller when the quantization distortion is increased in stages. In the present disclosure, the acquired signals are ranked as much as possible according to the usage of the application scenario.
The quantized signal may be encoded by PCM encoding (PCM uses a-rate 13 zigzag coding) to obtain the audio information in the video data.
S130, packaging the accompaniment tracks and the subtitles detached from the original audio-video file, the image information and the audio information in the video data according to the packaging format of the audio-video file to obtain the homemade MV.
The original video file usually includes information such as video streams, audio streams, subtitles, and the like, and the accompaniment tracks and the subtitles in the original video file need to be packaged before being extracted.
The MOV files are organized in tracks (Track). A file in MOV format may contain many tracks. Each track has a specific media type, such as audio, video, text, etc., and a data reference specifying where track sample data can be found.
The visible tracks have some visually relevant properties such as height, width, x, y offsets, number of layers, and graphics patterns, which may play multiple visible tracks at the same time, may be juxtaposed in position, may overlap completely, or may be more or less transparent and translucent.
Further, the sound track includes attributes such as volume and balance, which can be used to allow the user to create sound layers.
Each track has its own time scale, i.e., number of units contained per second, that describes the particular track, and any time scale may be specified in creating mv. For example, the time scale of a CD audio track may be 44100, such that each time unit corresponds to a time sample, or 1000, where each time unit corresponds to a 1 millisecond long sound.
The MOV file format has a concept of rate, the value is 0 when the MOV file is stopped, the value is 1 when the MOV file is played at a normal speed, the normal playing speed is determined by a time ratio, for example, a movie with a time ratio of 600 is played at a speed of 600 time units per second when the playing rate is 1, a movie with a time ratio of 600 is played at a speed of 3, 00 time units per second when the playing rate is 0.5, and a movie with a time ratio of 1200 time units per second when the playing rate is 2.
In some embodiments, the accompaniment tracks and subtitles may be detached from the MOV formatted original file by ffmpeg. For example ffmpeg-i input. mov-map 0: a:1 out. mp 3; mpeg-i input. mov-vn-an-codec: s:0 srt out. srt.
In some embodiments, the accompaniment tracks and subtitles separated from the original video and audio file may be packed with the image information and the audio information in the video data according to the encapsulation format of the video and audio file through ffmpeg, so as to obtain the homemade MV. For example, ffmpeg-i user, mp4-i user, mp3-i basic, mp3-vf, "subtiles = a.srt: force _ style = 'Fontsize =24'" -map 0: v-map 1: a-map 2: a out.
Further, still include:
the homemade MVs can be shared in various social platforms, namely uploaded to the cloud, for example, uploaded to mobile phone applets, public numbers and/or friend circles and the like. Subsequent users can check, download, share and the like in the mobile phone.
According to the embodiment of the disclosure, the following technical effects are achieved:
the invention collects the video data of the user through the existing KTV video collecting equipment and professional audio collecting equipment, separates the vocal accompaniment audio track and the caption information of the original song works, and combines the separated vocal accompaniment audio track and the caption information with the video data of the user into the video and audio works of the user. The recorded works can be directly uploaded to the cloud, and a user can check, download, share and the like in a mobile phone. High-quality MV self-control under a KVT environment is realized.
It should be noted that, for simplicity of description, the above-mentioned method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present application is not limited by the order of acts described, as some steps may occur in other orders or concurrently depending on the application. Further, those skilled in the art should also appreciate that the embodiments described in the specification are exemplary embodiments and that the acts and modules referred to are not necessarily required in this application.
The above is a description of method embodiments, and the embodiments of the present application are further described below by way of apparatus embodiments.
Fig. 2 shows a block diagram of a device 200 for homemaking MV by KTV according to an embodiment of the present application as shown in fig. 2, the device 200 comprising:
an obtaining module 210, configured to obtain video data of a user through a collecting device in the KTV;
a processing module 220, configured to process the video data by a first method to obtain image information in the video data; processing the video data through a second method to obtain audio information in the video data;
and the synthesis module 230 is configured to package the accompaniment tracks and subtitles detached from the original audio-video file, the image information and the audio information in the video data according to the encapsulation format of the audio-video file, and obtain the homemade MV.
It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working process of the described module may refer to the corresponding process in the foregoing method embodiment, and is not described herein again.
Fig. 3 shows a schematic structural diagram of a terminal device or a server suitable for implementing the embodiments of the present application.
As shown in fig. 3, the terminal device or server 300 includes a Central Processing Unit (CPU)301 that can perform various appropriate actions and processes in accordance with a program stored in a Read Only Memory (ROM)302 or a program loaded from a storage section 308 into a Random Access Memory (RAM) 303. In the RAM 303, various programs and data necessary for the operation of the system 300 are also stored. The CPU 301, ROM 302, and RAM 303 are connected to each other via a bus 304. An input/output (I/O) interface 305 is also connected to bus 304.
The following components are connected to the I/O interface 305: an input portion 306 including a keyboard, a mouse, and the like; an output section 307 including a display such as a Cathode Ray Tube (CRT), a Liquid Crystal Display (LCD), and the like, and a speaker; a storage section 308 including a hard disk and the like; and a communication section 309 including a network interface card such as a LAN card, a modem, or the like. The communication section 309 performs communication processing via a network such as the internet. A drive 310 is also connected to the I/O interface 305 as needed. A removable medium 311 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is mounted on the drive 310 as necessary, so that a computer program read out therefrom is mounted into the storage section 308 as necessary.
In particular, the above method flow steps may be implemented as a computer software program according to embodiments of the present application. For example, embodiments of the present application include a computer program product comprising a computer program embodied on a machine-readable medium, the computer program comprising program code for performing the method illustrated in the flow chart. In such an embodiment, the computer program may be downloaded and installed from a network through the communication section 309, and/or installed from the removable medium 311. The above-described functions defined in the system of the present application are executed when the computer program is executed by the Central Processing Unit (CPU) 301.
It should be noted that the computer readable medium shown in the present application may be a computer readable signal medium or a computer readable storage medium or any combination of the two. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples of the computer readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the present application, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. In this application, however, a computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wire, fiber optic cable, RF, etc., or any suitable combination of the foregoing.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems that perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The units or modules described in the embodiments of the present application may be implemented by software or hardware. The described units or modules may also be provided in a processor. Wherein the designation of a unit or module does not in some way constitute a limitation of the unit or module itself.
As another aspect, the present application also provides a computer-readable storage medium, which may be included in the electronic device described in the above embodiments; or may be separate and not incorporated into the electronic device. The computer readable storage medium stores one or more programs that, when executed by one or more processors, perform the methods described herein.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the application referred to in the present application is not limited to the embodiments in which the above-mentioned features are combined in particular, and also encompasses other embodiments in which the above-mentioned features or their equivalents are combined arbitrarily without departing from the concept of the application. For example, the above features may be replaced with (but not limited to) features having similar functions as those described in this application.
Claims (10)
1. A method for KTV to self-control MV is characterized by comprising the following steps:
acquiring video data of a user through acquisition equipment in the KTV;
processing the video data through a first method to obtain image information in the video data; processing the video data through a second method to obtain audio information in the video data;
and packaging the accompaniment tracks and the subtitles detached from the original video and audio file, the image information and the audio information in the video data according to the packaging format of the video and audio file to obtain the self-made MV.
2. The method of claim 1, wherein the processing the video data by the first method to obtain image information in the video data comprises:
and processing the video data in an intra-frame compression mode and an inter-frame compression mode to obtain image information in the video data.
3. The method of claim 2, wherein the intra-frame compression comprises:
dividing the video data into a plurality of macro blocks, and calculating the pixel value of each macro block;
filtering the video data based on the pixel value of each macro block, and removing high-frequency brightness data in the video to obtain a predicted image;
subtracting the video data from the predicted image to obtain a residual value;
performing integer discrete cosine transform on the residual values;
and compressing the transformed data in a CABAC compression mode to finish the intraframe compression of the video data.
4. The method of claim 3, wherein the inter-frame compression comprises:
calculating the similarity of any two adjacent frames in the video data, and grouping the frames in the video data based on the similarity;
performing motion estimation and compensation on frames in the same group to obtain compensation data;
based on the compensation data, inter-frame compression is completed.
5. The method of claim 4, wherein the processing the video data by the second method to obtain the audio information in the video data comprises:
sampling voice signals in the video data according to a preset sampling frequency;
quantizing the sampled signal;
and coding the quantized signal by a PCM coding mode to obtain the audio information in the video data.
6. The method of claim 5, wherein the accompaniment tracks and subtitles are separated from the original audio/video file by ffmpeg.
7. The method of claim 6, wherein said capturing video data of a user with a capturing device in a KTV comprises:
and video data of a user is acquired through VOD equipment and audio acquisition equipment in the KTV.
8. The utility model provides a device of KTV self-control MV, its characterized in that includes:
the acquisition module is used for acquiring video data of a user through acquisition equipment in the KTV;
the processing module is used for processing the video data through a first method to obtain image information in the video data; processing the video data through a second method to obtain audio information in the video data;
and the synthesis module is used for packaging the accompaniment tracks and the subtitles detached from the original audio-video file, the image information and the audio information in the video data according to the packaging format of the audio-video file to obtain the self-made MV.
9. An electronic device comprising a memory and a processor, the memory having stored thereon a computer program, wherein the processor, when executing the computer program, implements the method of any of claims 1-7.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the method according to any one of claims 1 to 7.
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