WO2020134892A1

WO2020134892A1 - Media file clipping method, electronic device, and server

Info

Publication number: WO2020134892A1
Application number: PCT/CN2019/122518
Authority: WO
Inventors: 韩卫正
Original assignee: 华为技术有限公司
Priority date: 2018-12-29
Filing date: 2019-12-03
Publication date: 2020-07-02
Also published as: CN109819306B; CN109819306A

Abstract

Disclosed is a media file clipping method, comprising: an electronic device obtains a media file identifier and a clipping parameter, and sends a clipping request to a server according to the clipping parameter; the electronic device receives clipping result information returned by the server; and the electronic device generates a clipping file according to the clipping result information and the media file. Compared with the prior art, the embodiments of the present invention can achieve the effects of low power consumption and short clipping time for terminal side clipping.

Description

Method for cutting media file, electronic equipment and server

This application requires the priority of the Chinese patent application submitted to the State Intellectual Property Office of China on December 29, 2018, with the application number 201811653372.9 and the invention titled "a method for cutting media files, electronic equipment and servers", all of its content Incorporated by reference in this application.

Technical field

The present invention relates to the field of media, and in particular to a method for cutting media files, an electronic device, and a server.

Background technique

Currently, users often use electronic devices to play media files. When a user hears a favorite media file and needs to process a segment of the favorite media file, the user needs to use other tools for processing the media file to process the media file. For example, when a user watches video content or listens to audio content, the user has a need to clip the video content or part of the audio content. For example, get the highlights of a movie to share, or get the climax part of the song set to ring tone, etc.

Streaming media is a kind of media that is transmitted while broadcasting, and is also a kind of multimedia. Side-by-side broadcasting means that when a media provider transmits media on the network, users continuously receive and watch or listen to the transmitted media. The popularity of smart phones has made streaming media services a common content service. Users can watch video content and listen to audio content based on streaming media technology.

Existing technology implements media cropping. Generally, an electronic device downloads a complete media file to the local of the electronic device, and the electronic device clips the media file through an application program installed on the electronic device. Clipping of the media file. This way of media cropping is very computationally intensive and consumes a lot of power, and it takes a long time to implement the cropping operation. When the media file is in a new media format, the application program on the terminal device also needs to do some new development adaptation, and the media file can be edited only after the application upgrade.

Summary of the invention

Embodiments of the present invention provide a method for cutting media files, an electronic device, and a server. Compared with the prior art, the power consumption of the terminal side cutting is smaller and the cutting time is shorter.

In a first aspect, an embodiment of the present invention provides a method for media file cropping, which includes: an electronic device acquiring a media file identifier and cropping parameters, and sending a cropping request to a server according to the cropping parameters. The electronic device receives the cropping result information returned by the server. The electronic device generates a crop file based on the crop result information and the media file.

In a possible implementation manner, the acquiring, by the electronic device, the media file identification and cropping parameters includes: receiving, by the electronic device, a user operation, acquiring the media file identification and cropping parameters.

In a possible implementation manner, the cropping parameters include at least two of the following parameters: cropping start time, cropping end time, and cropping duration.

In a possible implementation manner, the cropping result information includes byte positions of the start frame and the end frame of the clip to be cut in the media file.

In a possible implementation manner, the cropping result information further includes file header information of the cropping file.

In a possible implementation manner, the file header information is modified by the server.

In a possible implementation manner, the electronic device displays a cropping setting interface, and receives a user operation through the cropping setting interface to obtain cropping parameters.

In a possible implementation manner, the electronic device displays a crop file operation interface, and the crop file operation interface is used to control the crop file.

In a possible implementation manner, save the cropped file; or, listen to the cropped file; or, set the cropped file as a ringtone.

In a possible implementation manner, the electronic device cuts the media file through music playback software or video playback software.

According to the media cropping method provided by the embodiment of the present invention, the operation interface is displayed through the electronic device, and the user can set the cropping parameters through the setting interface and select the operation on the cropped file, which improves the user experience and saves the resource consumption of the electronic device, and Power consumption.

In a second aspect, an embodiment of the present invention provides an electronic device that implements media file clipping. The electronic device includes: a display screen, a processor, and a memory, where the memory is used to store programs; and the processor is used to call The program causes the electronic device to perform the media file cropping method of the first aspect described above.

In a third aspect, an embodiment of the present invention provides a computer-readable storage medium, including instructions that, when run on a computer, cause the computer to perform the media file cropping method of the first aspect described above.

According to a fourth aspect, an embodiment of the present invention provides a method for media file cropping, including: a server receiving a media file cropping request sent by an electronic device, the cropping request including the media file identification and cropping parameters; Acquiring the media file according to the media file identifier, and processing the media file according to the cropping parameter to obtain cropping result information; to the electronic device, the cropping result information, the cropping result information is used to enable the The electronic device generates a crop file. In this embodiment, the server finds the media file through the identification, which can make the search process more convenient.

In a possible implementation manner, the server modifies the file header information.

According to a fifth aspect, an embodiment of the present invention provides a server for media file cropping. The electronic device includes: a processor and a memory, where the memory is used to store a program; and the processor is used to call the program so that The server executes the media file cropping method as described in the fourth aspect above.

According to a sixth aspect, an embodiment of the present invention provides a computer-readable storage medium, including instructions that, when run on a computer, cause the computer to perform the media file cropping method of the fourth aspect.

According to the media cropping method, electronic device and server provided by the embodiments of the present invention, the media file is analyzed and processed by the server to obtain the cropping result, and the electronic device generates a cropping file according to the cropping result. It reduces the resource occupation of electronic devices and improves the processing efficiency of media files. In addition, the electronic device can display an operation interface, and the user can set the cutting parameters through the setting interface and select the operation on the cutting file, which improves the user experience, saves the resource occupation of the electronic device, and consumes power.

BRIEF DESCRIPTION

In order to more clearly explain the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required in the embodiments or the description of the prior art.

FIG. 1A is a schematic diagram of a structure of an electronic device provided by an embodiment of the present invention;

1B is a schematic diagram of a software structure of an electronic device provided by an embodiment of the present invention;

2 is a schematic structural diagram of a media cropping system in an embodiment of the present invention;

3 is a schematic structural diagram of a server in an embodiment of the present invention;

4 is a schematic structural diagram of another server in an embodiment of the present invention;

5 is a schematic diagram of a first application interface of a music player in an embodiment of the present invention;

6 is a schematic diagram of a second application interface of a music player in an embodiment of the present invention;

7 is a schematic diagram of a third application interface of a music player in an embodiment of the present invention;

8 is a schematic diagram of a fourth application interface of a music player in an embodiment of the present invention;

9 is a schematic structural diagram of a media file in an embodiment of the present invention;

10 is a schematic structural diagram of a cropped file in an embodiment of the present invention;

11 is a schematic diagram of media content of a media file in an embodiment of the present invention;

12 is a schematic diagram of media content of a cropped file in an embodiment of the present invention.

detailed description

The terminology used in the following embodiments of the present application is only for the purpose of describing specific embodiments, and is not intended to be a limitation of the present application. As used in the specification and appended claims of this application, the singular expressions "a", "an", "said", "above", "the" and "this" are intended to also Includes plural expressions unless the context clearly indicates otherwise. It should also be understood that the term "and/or" used in this application refers to and includes any or all possible combinations of one or more of the listed items.

The following describes an electronic device, a user interface for such an electronic device, and an embodiment for using such an electronic device. In some embodiments, the electronic device may be a portable electronic device that also contains other functions such as personal digital assistant and/or music player functions, such as a mobile phone, a tablet computer, and a wearable electronic device with wireless communication function (such as a smart watch) Wait. Exemplary embodiments of portable electronic devices include, but are not limited to

Or portable electronic devices of other operating systems. The above portable electronic device may also be other portable electronic devices, such as a laptop computer with a touch-sensitive surface or a touch panel. It should also be understood that in some other embodiments, the above electronic device may not be a portable electronic device, but a desktop computer with a touch-sensitive surface or a touch panel.

The term “user interface (UI)” in the specification, claims, and drawings of this application is a media interface for interaction and information exchange between applications or operating systems and users, which implements the internal form of information And users can accept the conversion between forms. The user interface of the application is source code written in a specific computer language such as java and extensible markup language (XML). The interface source code is parsed and rendered on the terminal device, and finally presented as content that can be recognized by the user. Such as pictures, text, buttons and other controls. Controls (also called widgets) are the basic elements of the user interface. Typical controls include toolbars, menu bars, text boxes, buttons, and scroll bars. (scrollbar), pictures and text. The attributes and contents of the controls in the interface are defined by tags or nodes. For example, XML uses <Textview>, <ImgView>, <VideoView> and other nodes to specify the controls contained in the interface. A node corresponds to a control or attribute in the interface, and the node is rendered as user-visible content after being parsed and rendered. In addition, many applications, such as hybrid applications (hybrid application) interface usually also contains web pages. A web page, also known as a page, can be understood as a special control embedded in the application interface. The web page is source code written in a specific computer language, such as hypertext markup language (hypertext markup language, HTML), cascading styles Tables (cascading styles, CSS), java scripts (JavaScript, JS), etc., web page source code can be loaded and displayed as user-recognizable content by the browser or a web page display component similar to the browser function. The specific content contained in a web page is also defined by tags or nodes in the source code of the web page. For example, HTML defines the elements and attributes of the web page through <p>, <img>, <video>, and <canvas>.

The common form of user interface is the graphical user interface (graphic user interface, GUI), which refers to the use of graphical display related to computer operation.

User interface. It can be an icon, window, control and other interface elements displayed on the display screen of the electronic device, where the control can include icons, buttons, menus, tabs, text boxes, dialog boxes, status bars, navigation bars, widgets, etc. Visual interface elements.

The technical solution of the embodiment of the present invention is different from that in the prior art in which media cutting is performed by an electronic device. In the embodiment of the present invention, media cutting is put into processing. Through processing to achieve media clipping, the power consumption of the electronic device for media clipping is saved. Due to the strong computing power of processing, the overall media cutting time will also be reduced.

In some embodiments, after the above function is turned on, the electronic device may discover the server through cellular mobile communication network technology or wide area network technology. For the specific implementation of the discovery server, in some embodiments, after the electronic device is connected to the server in the network, the server can provide the electronic device with a list of devices connected to the server, so that the electronic device can discover the Other devices. The other devices may be servers discovered by the electronic device.

First, an exemplary electronic device 100 provided in the following embodiments of the present application is introduced.

FIG. 1A shows a schematic structural diagram of the electronic device 100.

The electronic device 100 may include a processor 110, an external memory interface 120, an internal memory 121, a universal serial bus (USB) interface 130, a charging management module 140, a power management module 141, a battery 142, an antenna 1, an antenna 2 , Mobile communication module 150, wireless communication module 160, audio module 170, speaker 170A, receiver 170B, microphone 170C, headphone jack 170D, sensor module 180, key 190, motor 191, indicator 192, camera 193, display 194, and Subscriber identification module (SIM) card interface 195, etc. The sensor module 180 may include a pressure sensor 180A, a gyro sensor 180B, an air pressure sensor 180C, a magnetic sensor 180D, an acceleration sensor 180E, a distance sensor 180F, a proximity light sensor 180G, a fingerprint sensor 180H, a temperature sensor 180J, a touch sensor 180K, and ambient light Sensor 180L, bone conduction sensor 180M, etc.

It can be understood that the structure illustrated in the embodiment of the present invention does not constitute a specific limitation on the electronic device 100. In other embodiments of the present application, the electronic device 100 may include more or fewer components than shown, or combine certain components, or split certain components, or arrange different components. The illustrated components can be implemented in hardware, software, or a combination of software and hardware.

The processor 110 may include one or more processing units. For example, the processor 110 may include an application processor (application processor, AP), a modem processor, a graphics processor (graphics processing unit, GPU), and an image signal processor. (image)signal processor (ISP), controller, memory, video codec, digital signal processor (DSP), baseband processor, and/or neural-network processing unit (NPU) Wait. Among them, the different processing units may be independent devices or may be integrated in one or more processors. In some embodiments, the electronic device 100 may also include one or more processors 110.

The controller may be the nerve center and command center of the electronic device 100. The controller can generate the operation control signal according to the instruction operation code and the timing signal to complete the control of instruction fetch and execution.

The processor 110 may also be provided with a memory for storing instructions and data. In some embodiments, the memory in the processor 110 is a cache memory. The memory may store instructions or data that the processor 110 has just used or recycled. If the processor 110 needs to use the instruction or data again, it can be directly called from the memory. The repeated access is avoided, and the waiting time of the processor 110 is reduced, thereby improving the efficiency of the electronic device 100.

In some embodiments, the processor 110 may include one or more interfaces. Interfaces may include built-in integrated circuit (inter-integrated circuit, I2C) interface, integrated circuit built-in audio (inter-integrated circuit, sound, I2S) interface, pulse code modulation (pulse code modulation (PCM) interface, universal asynchronous transceiver (universal asynchronous receiver/transmitter, UART) interface, mobile industry processor interface (MIPI), general-purpose input/output (GPIO) interface, user identification module (subscriber identity module, SIM) interface, And/or universal serial bus (USB) interface, etc.

The I2C interface is a bidirectional synchronous serial bus, including a serial data line (serial data line, SDA) and a serial clock line (derail clock line, SCL). In some embodiments, the processor 110 may include multiple sets of I2C buses. The processor 110 may be coupled to the touch sensor 180K, charger, flash, camera 193, etc., respectively through different I2C bus interfaces. For example, the processor 110 may couple the touch sensor 180K through the I2C interface, so that the processor 110 and the touch sensor 180K communicate through the I2C bus interface, and realize the touch function of the electronic device 100.

The I2S interface can be used for audio communication. In some embodiments, the processor 110 may include multiple sets of I2S buses. The processor 110 may be coupled with the audio module 170 through an I2S bus to implement communication between the processor 110 and the audio module 170. In some embodiments, the audio module 170 can transmit audio signals to the wireless communication module 160 through the I2S interface, to realize the function of answering the phone call through the Bluetooth headset.

The PCM interface can also be used for audio communication, sampling, quantizing and encoding analog signals. In some embodiments, the audio module 170 and the wireless communication module 160 may be coupled through a PCM bus interface. In some embodiments, the audio module 170 can also transmit audio signals to the wireless communication module 160 through the PCM interface to implement the function of answering the phone call through the Bluetooth headset. Both the I2S interface and the PCM interface can be used for audio communication.

The UART interface is a universal serial data bus used for asynchronous communication. The bus may be a bidirectional communication bus. It converts the data to be transmitted between serial communication and parallel communication. In some embodiments, the UART interface is generally used to connect the processor 110 and the wireless communication module 160. For example, the processor 110 communicates with the Bluetooth module in the wireless communication module 160 through the UART interface to implement the Bluetooth function. In some embodiments, the audio module 170 can transmit audio signals to the wireless communication module 160 through the UART interface, so as to realize the function of playing music through the Bluetooth headset.

The MIPI interface can be used to connect the processor 110 to peripheral devices such as the display screen 194 and the camera 193. MIPI interface includes camera serial interface (camera serial interface, CSI), display serial interface (display serial interface, DSI) and so on. In some embodiments, the processor 110 and the camera 193 communicate through a CSI interface to implement the shooting function of the electronic device 100. The processor 110 and the display screen 194 communicate through the DSI interface to realize the display function of the electronic device 100.

The GPIO interface can be configured via software. The GPIO interface can be configured as a control signal or a data signal. In some embodiments, the GPIO interface may be used to connect the processor 110 to the camera 193, the display screen 194, the wireless communication module 160, the audio module 170, the sensor module 180, and the like. GPIO interface can also be configured as I2C interface, I2S interface, UART interface, MIPI interface, etc.

The USB interface 130 is an interface that conforms to the USB standard specifications, and may specifically be a Mini USB interface, a Micro USB interface, a USB Type C interface, etc. The USB interface 130 can be used to connect a charger to charge the electronic device 100, and can also be used to transfer data between the electronic device 100 and peripheral devices. It can also be used to connect headphones and play audio through the headphones. The interface can also be used to connect other electronic devices, such as AR devices.

It can be understood that the interface connection relationship between the modules illustrated in the embodiments of the present invention is only a schematic description, and does not constitute a limitation on the structure of the electronic device 100. In other embodiments, the electronic device 100 may also use different interface connection methods in the foregoing embodiments, or a combination of multiple interface connection methods.

The charging management module 140 is used to receive charging input from the charger. The charger can be a wireless charger or a wired charger. In some wired charging embodiments, the charging management module 140 may receive the charging input of the wired charger through the USB interface 130. In some wireless charging embodiments, the charging management module 140 may receive wireless charging input through the wireless charging coil of the electronic device 100. While the charging management module 140 charges the battery 142, it can also supply power to the electronic device through the power management module 141.

The power management module 141 is used to connect the battery 142, the charging management module 140 and the processor 110. The power management module 141 receives input from the battery 142 and/or the charging management module 140, and supplies power to the processor 110, internal memory 121, external memory, display screen 194, camera 193, wireless communication module 160, and the like. The power management module 141 can also be used to monitor battery capacity, battery cycle times, battery health status (leakage, impedance) and other parameters. In some other embodiments, the power management module 141 may also be disposed in the processor 110. In other embodiments, the power management module 141 and the charging management module 140 may also be set in the same device.

The wireless communication function of the electronic device 100 can be realized by the antenna 1, the antenna 2, the mobile communication module 150, the wireless communication module 160, the modem processor, and the baseband processor.

Antenna 1 and antenna 2 are used to transmit and receive electromagnetic wave signals. Each antenna in the electronic device 100 may be used to cover a single or multiple communication frequency bands. Different antennas can also be reused to improve antenna utilization. For example, the antenna 1 can be multiplexed as a diversity antenna of a wireless local area network. In other embodiments, the antenna may be used in conjunction with a tuning switch.

The mobile communication module 150 may provide a wireless communication solution including 2G/3G/4G/5G and the like applied to the electronic device 100. The mobile communication module 150 may include at least one filter, switch, power amplifier, low noise amplifier (LNA), and the like. The mobile communication module 150 can receive the electromagnetic wave from the antenna 1 and filter, amplify, etc. the received electromagnetic wave, and transmit it to the modem processor for demodulation. The mobile communication module 150 can also amplify the signal modulated by the modulation and demodulation processor and convert it to electromagnetic wave radiation through the antenna 1. In some embodiments, at least part of the functional modules of the mobile communication module 150 may be provided in the processor 110. In some embodiments, at least part of the functional modules of the mobile communication module 150 and at least part of the modules of the processor 110 may be provided in the same device.

The modem processor may include a modulator and a demodulator. Among them, the modulator is used to modulate the low-frequency baseband signal to be transmitted into a high-frequency signal. The demodulator is used to demodulate the received electromagnetic wave signal into a low-frequency baseband signal. The demodulator then transmits the demodulated low-frequency baseband signal to the baseband processor for processing. The low-frequency baseband signal is processed by the baseband processor and then passed to the application processor. The application processor outputs a sound signal through an audio device (not limited to a speaker 170A, a receiver 170B, etc.), or displays an image or video through a display screen 194. In some embodiments, the modem processor may be an independent device. In other embodiments, the modem processor may be independent of the processor 110, and may be set in the same device as the mobile communication module 150 or other functional modules.

The wireless communication module 160 can provide wireless local area networks (wireless local area networks, WLAN) (such as wireless fidelity (Wi-Fi) networks), Bluetooth (bluetooth, BT), and global navigation satellites that are applied to the electronic device 100 Wireless communication solutions such as global navigation (satellite system, GNSS), frequency modulation (FM), near field communication (NFC), infrared technology (infrared, IR), etc. The wireless communication module 160 may be one or more devices integrating at least one communication processing module. The wireless communication module 160 receives the electromagnetic wave via the antenna 2, frequency-modulates and filters the electromagnetic wave signal, and sends the processed signal to the processor 110. The wireless communication module 160 can also receive the signal to be transmitted from the processor 110, frequency-modulate it, amplify it, and convert it to electromagnetic waves through the antenna 2 to radiate it out. Exemplarily, the wireless communication module 160 may include a Bluetooth module, a Wi-Fi module, and the like.

In some embodiments, the antenna 1 of the electronic device 100 and the mobile communication module 150 are coupled, and the antenna 2 and the wireless communication module 160 are coupled so that the electronic device 100 can communicate with the network and other devices through wireless communication technology. The wireless communication technology may include a global mobile communication system (global system for mobile communications, GSM), general packet radio service (general packet radio service, GPRS), code division multiple access (code division multiple access, CDMA), broadband Wideband code division multiple access (WCDMA), time-division code division multiple access (TD-SCDMA), long-term evolution (LTE), BT, GNSS, WLAN, NFC , FM, and/or IR technology, etc. The GNSS may include a global positioning system (GPS), a global navigation satellite system (GLONASS), a beidou navigation system (BDS), and a quasi-zenith satellite system (quasi -zenith satellite system (QZSS) and/or satellite-based augmentation system (SBAS).

In some embodiments, the Bluetooth (BT) module and the WLAN module included in the wireless communication module 160 can transmit signals to detect or scan devices near the electronic device 100, so that the electronic device 100 can discover nearby devices using wireless communication technologies such as Bluetooth or WLAN , And establish a wireless communication connection with nearby devices, and share data to nearby devices through the above connection. Among them, the Bluetooth (BT) module can provide one or more Bluetooth communication solutions including classic Bluetooth (Bluetooth 2.1) or Bluetooth low energy (BLE). The WLAN module can provide one or more WLAN communication solutions including Wi-Fi direct, Wi-Fi LAN or Wi-Fi AP.

In some embodiments, the wireless communication solution provided by the mobile communication module 150 can enable the electronic device to communicate with devices (such as servers) in the network, and the WLAN wireless communication solution provided by the wireless communication module 160 can also enable the electronic device It can communicate with devices (such as servers) in the network, and can communicate with processing devices through the devices (such as servers) in the network. In this way, the electronic device can discover the processing device and transmit data to the processing device.

The electronic device 100 can realize a display function through a GPU, a display screen 194, and an application processor. The GPU is a microprocessor for image processing, connecting the display screen 194 and the application processor. The GPU is used to perform mathematical and geometric calculations, and is used for graphics rendering. The processor 110 may include one or more GPUs that execute instructions to generate or change display information.

The display screen 194 is used to display images, videos and the like. The display screen 194 includes a display panel. The display panel can use a liquid crystal display (LCD), organic light-emitting diode (OLED), active matrix organic light-emitting diode or active matrix organic light-emitting diode (active-matrix organic light-emitting diode) emitting diode, AMOLED, flexible light-emitting diode (FLED), Miniled, MicroLed, Micro-oLed, quantum dot light emitting diode (QLED), etc. In some embodiments, the electronic device 100 may include 1 or N display screens 194, where N is a positive integer greater than 1.

The electronic device 100 can realize a shooting function through an ISP, a camera 193, a video codec, a GPU, a display screen 194, an application processor, and the like.

The ISP processes the data fed back by the camera 193. For example, when taking a picture, the shutter is opened, and light is transmitted to the photosensitive element of the camera through the lens, and the optical signal is converted into an electrical signal. The photosensitive element of the camera transmits the electrical signal to the ISP for processing and converts it into an image visible to the naked eye. ISP can also optimize the algorithm of image noise, brightness and skin color. ISP can also optimize the exposure, color temperature and other parameters of the shooting scene. In some embodiments, the ISP may be set in the camera 193.

The camera 193 is used to capture still images or videos. The object generates an optical image through the lens and projects it onto the photosensitive element. The photosensitive element may be a charge coupled device (charge coupled device, CCD) or a complementary metal-oxide-semiconductor (CMOS) phototransistor. The photosensitive element converts the optical signal into an electrical signal, and then transmits the electrical signal to the ISP to convert it into a digital image signal. The ISP outputs the digital image signal to the DSP for processing. DSP converts digital image signals into standard RGB, YUV and other format image signals. In some embodiments, the electronic device 100 may include 1 or N cameras 193, where N is a positive integer greater than 1.

The digital signal processor is used to process digital signals. In addition to digital image signals, it can also process other digital signals. For example, when the electronic device 100 is selected at a frequency point, the digital signal processor is used to perform Fourier transform on the energy at the frequency point.

The video codec is used to compress or decompress digital video. The electronic device 100 may support one or more video codecs. In this way, the electronic device 100 can play or record videos in various encoding formats, for example: moving picture experts group (MPEG)-1, MPEG-2, MPEG-3, MPEG-4, etc.

NPU is a neural-network (NN) computing processor. By drawing on the structure of biological neural networks, such as the transfer mode between neurons in the human brain, it can quickly process the input information and can continue to self-learn. The NPU can realize applications such as intelligent recognition of the electronic device 100, such as image recognition, face recognition, voice recognition, and text understanding.

The external memory interface 120 can be used to connect an external memory card, such as a Micro SD card, to expand the storage capacity of the electronic device 100. The external memory card communicates with the processor 110 through the external memory interface 120 to realize the data storage function. For example, save music, photos, videos and other data in an external memory card.

The internal memory 121 may be used to store one or more computer programs including instructions. The processor 110 may execute the above instructions stored in the internal memory 121, so that the electronic device 100 executes the media cropping method, various functional applications, and data processing provided in some embodiments of the present application. The internal memory 121 may include a storage program area and a storage data area. Among them, the storage program area can store the operating system; the storage program area can also store one or more application programs (such as gallery, contacts, etc.) and so on. The storage data area may store data (such as photos, contacts, etc.) created during use of the electronic device 100. In addition, the internal memory 121 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, a universal flash memory (universal flash storage, UFS), and so on.

The electronic device 100 may implement audio functions through an audio module 170, a speaker 170A, a receiver 170B, a microphone 170C, a headphone interface 170D, and an application processor. For example, music playback, recording, etc.

The audio module 170 is used to convert digital audio information into analog audio signal output, and also used to convert analog audio input into digital audio signal. The audio module 170 can also be used to encode and decode audio signals. In some embodiments, the audio module 170 may be disposed in the processor 110, or some functional modules of the audio module 170 may be disposed in the processor 110.

The speaker 170A, also called "speaker", is used to convert audio electrical signals into sound signals. The electronic device 100 can listen to music through the speaker 170A, or listen to a hands-free call.

The receiver 170B, also known as "handset", is used to convert audio electrical signals into sound signals. When the electronic device 100 answers a call or voice message, the voice can be received by bringing the receiver 170B close to the ear.

The microphone 170C, also known as "microphone", "microphone", is used to convert sound signals into electrical signals. When making a call or sending a voice message, the user can make a sound by approaching the microphone 170C through the human mouth, and input the sound signal to the microphone 170C. The electronic device 100 may be provided with at least one microphone 170C. In other embodiments, the electronic device 100 may be provided with two microphones 170C. In addition to collecting sound signals, it may also implement a noise reduction function. In other embodiments, the electronic device 100 may also be provided with three, four, or more microphones 170C to collect sound signals, reduce noise, identify sound sources, and implement directional recording functions.

The headset interface 170D is used to connect wired headsets. The earphone interface 170D may be a USB interface 130, or a 3.5mm open mobile electronic device (open mobile terminal) platform (OMTP) standard interface, and the American Telecommunications Industry Association (cellular telecommunications industry association of the United States, CTIA) standard interface.

The pressure sensor 180A is used to sense the pressure signal and can convert the pressure signal into an electrical signal. In some embodiments, the pressure sensor 180A may be provided on the display screen 194. There are many types of pressure sensors 180A, such as resistive pressure sensors, inductive pressure sensors, and capacitive pressure sensors. The capacitive pressure sensor may be a parallel plate including at least two conductive materials. When force is applied to the pressure sensor 180A, the capacitance between the electrodes changes. The electronic device 100 determines the strength of the pressure according to the change in capacitance. When a touch operation is applied to the display screen 194, the electronic device 100 detects the intensity of the touch operation according to the pressure sensor 180A. The electronic device 100 may also calculate the touched position based on the detection signal of the pressure sensor 180A. In some embodiments, touch operations that act on the same touch position but have different touch operation intensities may correspond to different operation instructions. For example, when a touch operation with a touch operation intensity less than the first pressure threshold acts on the short message application icon, an instruction to view the short message is executed. When a touch operation with a touch operation intensity greater than or equal to the first pressure threshold acts on the short message application icon, an instruction to create a new short message is executed.

The gyro sensor 180B may be used to determine the movement posture of the electronic device 100. In some embodiments, the angular velocity of the electronic device 100 around three axes (ie, x, y, and z axes) may be determined by the gyro sensor 180B. The gyro sensor 180B can be used for image stabilization. Exemplarily, when the shutter is pressed, the gyro sensor 180B detects the jitter angle of the electronic device 100, calculates the distance that the lens module needs to compensate based on the angle, and allows the lens to counteract the jitter of the electronic device 100 through reverse movement to achieve anti-shake. The gyro sensor 180B can also be used for navigation and somatosensory game scenes.

The air pressure sensor 180C is used to measure air pressure. In some embodiments, the electronic device 100 calculates the altitude based on the air pressure value measured by the air pressure sensor 180C to assist positioning and navigation.

The magnetic sensor 180D includes a Hall sensor. The electronic device 100 can detect the opening and closing of the flip holster using the magnetic sensor 180D. In some embodiments, when the electronic device 100 is a clamshell machine, the electronic device 100 may detect the opening and closing of the clamshell according to the magnetic sensor 180D. Furthermore, according to the detected opening and closing state of the holster or the opening and closing state of the flip cover, characteristics such as automatic unlocking of the flip cover are set.

The acceleration sensor 180E can detect the magnitude of acceleration of the electronic device 100 in various directions (generally three axes). When the electronic device 100 is stationary, the magnitude and direction of gravity can be detected. It can also be used to recognize the posture of electronic devices, and can be used in horizontal and vertical screen switching, pedometer and other applications.

The distance sensor 180F is used to measure the distance. The electronic device 100 can measure the distance by infrared or laser. In some embodiments, when shooting scenes, the electronic device 100 may use the distance sensor 180F to measure distance to achieve fast focusing.

The proximity light sensor 180G may include, for example, a light emitting diode (LED) and a light detector, such as a photodiode. The light emitting diode may be an infrared light emitting diode. The electronic device 100 emits infrared light outward through the light emitting diode. The electronic device 100 uses a photodiode to detect infrared reflected light from nearby objects. When sufficient reflected light is detected, it may be determined that there is an object near the electronic device 100. When insufficient reflected light is detected, the electronic device 100 may determine that there is no object near the electronic device 100. The electronic device 100 can use the proximity light sensor 180G to detect that the user holds the electronic device 100 close to the ear to talk, so as to automatically turn off the screen to save power. The proximity light sensor 180G can also be used in leather case mode, pocket mode automatically unlocks and locks the screen.

The ambient light sensor 180L is used to sense the brightness of ambient light. The electronic device 100 can adaptively adjust the brightness of the display screen 194 according to the perceived brightness of the ambient light. The ambient light sensor 180L can also be used to automatically adjust the white balance when taking pictures. The ambient light sensor 180L can also cooperate with the proximity light sensor 180G to detect whether the electronic device 100 is in a pocket to prevent accidental touch.

The fingerprint sensor 180H is used to collect fingerprints. The electronic device 100 can use the collected fingerprint characteristics to realize fingerprint unlocking, access to application lock, fingerprint photo taking, fingerprint answering call, and the like.

The temperature sensor 180J is used to detect the temperature. In some embodiments, the electronic device 100 uses the temperature detected by the temperature sensor 180J to execute a temperature processing strategy. For example, when the temperature reported by the temperature sensor 180J exceeds a threshold, the electronic device 100 performs to reduce the performance of the processor located near the temperature sensor 180J in order to reduce power consumption and implement thermal protection. In some other embodiments, when the temperature is lower than another threshold, the electronic device 100 heats the battery 142 to avoid abnormal shutdown of the electronic device 100 due to low temperature. In some other embodiments, when the temperature is below another threshold, the electronic device 100 performs boosting on the output voltage of the battery 142 to avoid abnormal shutdown due to low temperature.

The touch sensor 180K can also be called a touch panel or a touch-sensitive surface. The touch sensor 180K may be disposed on the display screen 194, and the touch sensor 180K and the display screen 194 constitute a touch screen, also called a "touch screen". The touch sensor 180K is used to detect a touch operation acting on or near it. The touch sensor can pass the detected touch operation to the application processor to determine the type of touch event. The visual output related to the touch operation can be provided through the display screen 194. In other embodiments, the touch sensor 180K may also be disposed on the surface of the electronic device 100, which is different from the location where the display screen 194 is located.

The bone conduction sensor 180M can acquire vibration signals. In some embodiments, the bone conduction sensor 180M can acquire the vibration signal of the vibrating bone mass of the human voice. The bone conduction sensor 180M can also contact the pulse of the human body and receive a blood pressure beating signal. In some embodiments, the bone conduction sensor 180M may also be provided in the earphone and combined into a bone conduction earphone. The audio module 170 may parse out the voice signal based on the vibration signal of the vibrating bone block of the voice part acquired by the bone conduction sensor 180M to realize the voice function. The application processor may analyze the heart rate information based on the blood pressure beating signal acquired by the bone conduction sensor 180M to implement the heart rate detection function.

The key 190 includes a power-on key, a volume key, and the like. The key 190 may be a mechanical key. It can also be a touch button. The electronic device 100 can receive key input and generate key signal input related to user settings and function control of the electronic device 100.

The motor 191 may generate a vibration prompt. The motor 191 can be used for vibration notification of incoming calls and can also be used for touch vibration feedback. For example, touch operations applied to different applications (such as taking pictures, audio playback, etc.) may correspond to different vibration feedback effects. For the touch operation of different areas of the display screen 194, the motor 191 can also correspond to different vibration feedback effects. Different application scenarios (for example: time reminder, receiving information, alarm clock, game, etc.) can also correspond to different vibration feedback effects. Touch vibration feedback effect can also support customization.

The indicator 192 can be an indicator light, which can be used to indicate the charging state, the amount of power change, and can also be used to indicate messages, missed calls, notifications, and the like.

The SIM card interface 195 is used to connect a SIM card. The SIM card can be inserted into or removed from the SIM card interface 195 to achieve contact and separation with the electronic device 100. The electronic device 100 may support 1 or N SIM card interfaces, where N is a positive integer greater than 1. The SIM card interface 195 can support Nano SIM cards, Micro SIM cards, SIM cards, etc. The same SIM card interface 195 can insert multiple cards at the same time. The types of the multiple cards may be the same or different. The SIM card interface 195 can also be compatible with different types of SIM cards. The SIM card interface 195 can also be compatible with external memory cards. The electronic device 100 interacts with the network through a SIM card to realize functions such as call and data communication. In some embodiments, the electronic device 100 uses eSIM, that is, an embedded SIM card. The eSIM card can be embedded in the electronic device 100 and cannot be separated from the electronic device 100.

The electronic device 100 exemplarily shown in FIG. 1A may display various user interfaces described in the following embodiments through the display screen 194. The electronic device 100 can detect a touch operation in each user interface through the touch sensor 180K, for example, a click operation in each user interface (such as a touch operation on an icon, a double-click operation), and, for example, an upward or in each user interface. Swipe down, or perform a gesture of drawing a circle, and so on. In some embodiments, the electronic device 100 may detect a motion gesture performed by the user holding the electronic device 100, such as shaking the electronic device, through the gyro sensor 180B, the acceleration sensor 180E, or the like. In some embodiments, the electronic device 100 can detect non-touch gesture operations through the camera 193 (eg, 3D camera, depth camera).

The software system of the electronic device 100 may adopt a layered architecture, event-driven architecture, micro-core architecture, micro-service architecture, or cloud architecture. The embodiment of the present invention takes the Android system with a layered architecture as an example to exemplarily explain the software structure of the electronic device 100.

FIG. 1B is a block diagram of the software structure of the electronic device 100 according to an embodiment of the present invention.

The layered architecture divides the software into several layers, and each layer has a clear role and division of labor. The layers communicate with each other through a software interface. In some embodiments, the Android system is divided into four layers, from top to bottom are the application layer, the application framework layer, the Android runtime and the system library, and the kernel layer.

The application layer may include a series of application packages.

As shown in FIG. 1B, the application package may include applications such as camera, gallery, calendar, call, map, navigation, WLAN, Bluetooth, music, video, and short message.

The application framework layer provides an application programming interface (application programming interface) and programming framework for applications at the application layer. The application framework layer includes some predefined functions.

As shown in FIG. 1B, the application framework layer may include a window manager, a content provider, a view system, a phone manager, a resource manager, a notification manager, and so on.

The window manager is used to manage window programs. The window manager can obtain the size of the display screen, determine whether there is a status bar, lock the screen, intercept the screen, etc.

Content providers are used to store and retrieve data, and make these data accessible to applications. The data may include videos, images, audio, calls made and received, browsing history and bookmarks, phonebooks, etc.

The view system includes visual controls, such as controls for displaying text and controls for displaying pictures. The view system can be used to build applications. The display interface can be composed of one or more views. For example, a display interface including an SMS notification icon may include a view to display text and a view to display pictures.

The phone manager is used to provide the communication function of the electronic device 100. For example, the management of the call status (including connection, hang up, etc.).

The resource manager provides various resources for the application, such as localized strings, icons, pictures, layout files, video files, and so on.

The notification manager enables applications to display notification information in the status bar, which can be used to convey notification-type messages, and can disappear automatically after a short stay without user interaction. For example, the notification manager is used to notify the completion of downloading, message reminders, etc. The notification manager can also be a notification that appears in the status bar at the top of the system in the form of a chart or scroll bar text, such as a notification of an application running in the background, or a notification that appears on the screen in the form of a dialog window. For example, the text message is displayed in the status bar, a prompt sound is emitted, the electronic device vibrates, and the indicator light flashes.

Android Runtime includes core library and virtual machine. Android runtime is responsible for the scheduling and management of the Android system.

The core library contains two parts: one part is the function function that Java language needs to call, and the other part is the core library of Android.

The application layer and the application framework layer run in the virtual machine. The virtual machine executes the java files of the application layer and the application framework layer into binary files. The virtual machine is used to perform functions such as object lifecycle management, stack management, thread management, security and exception management, and garbage collection.

The system library may include multiple functional modules. For example: surface manager (surface manager), media library (Media library), 3D graphics processing library (for example: OpenGL ES), 2D graphics engine (for example: SGL), etc.

The surface manager is used to manage the display subsystem and provides the fusion of 2D and 3D layers for multiple applications.

The media library supports a variety of commonly used audio, video format playback and recording, and still image files. The media library can support multiple audio and video encoding formats, such as: MPEG4, H.264, MP3, AAC, AMR, JPG, PNG, etc.

The 3D graphics processing library is used to realize 3D graphics drawing, image rendering, synthesis, and layer processing.

The 2D graphics engine is a drawing engine for 2D drawing.

The kernel layer is the layer between hardware and software. The kernel layer contains at least the display driver, camera driver, audio driver, and sensor driver.

The software system shown in Figure 1B involves the presentation of applications that use sharing capabilities (such as a gallery, file manager), an instant sharing module that provides sharing capabilities, a print service (print service) and a print spooler (print background service) that provide print capabilities , And the application framework layer provide printing framework, WLAN services, Bluetooth services, and the core and the bottom layer provide WLAN Bluetooth capabilities and basic communication protocols.

The following describes the workflow of the software and hardware of the electronic device 100 in combination with capturing a photographing scene.

When the touch sensor 180K receives the touch operation, the corresponding hardware interrupt is sent to the kernel layer. The kernel layer processes touch operations into original input events (including touch coordinates, time stamps and other information of touch operations). The original input event is stored in the kernel layer. The application framework layer obtains the original input event from the kernel layer, and identifies the control corresponding to the input event. Taking the control corresponding to the touch operation as a camera application icon as an example, the camera application calls the interface of the application framework layer to start the camera application, and then starts the camera driver by calling the kernel layer, and captures a still image or video through the camera 193.

As shown in FIG. 2, it is a media cropping system provided by an embodiment of the present invention. The cropping system includes an electronic device 100 and a server 202. The user operates the display screen of the electronic device 100, selects the media file A, and sends a request message to the cloud server to request the media file A to be cropped. The request message may include file information of the media file A. After receiving the request message, the server crops the corresponding media content according to the file information, and sends the cropping result to the electronic device. The cropping result may include cropped summary information. The electronic device 100 regenerates the crop file B according to the cropping result returned by the server 202 and the media file A.

The cropping system of the embodiment of the present invention can reduce the resource occupation of media files by electronic devices, reduce the power consumption of the electronic devices for cutting media files, and improve the efficiency and speed of cutting media files.

In the embodiment of the present invention, the server may be a cloud server, or an online server, etc., which has a clipping function.

In an embodiment of the present invention, the file information of the media content in the request message may include at least one of the following information: media file identification and cropping parameters. The cropping parameters may include at least one of the following parameters: start time of cropping, end time of cropping, duration of cropping, and so on.

In the embodiment of the present invention, the cropping parameter may be set by default, or may be set by a user's operation, or related parameters may be intelligently identified and generated by the electronic device or related software.

In an embodiment of the present invention, the summary information may include at least one file segment information in order, and the starting position and end position information of each segment in the original media file A.

In an embodiment of the present invention, the electronic device may implement the cropping function through an application installed on the electronic device. For example, a cutting software C may be installed on the electronic device, the cutting software C may be used to select a media file A to be cut, and the cutting software C may send a cutting request to the cloud server. The cropping software can also provide a cropping setting interface, through which the media file to be cropped can be selected, and cropping parameters for the media file can be set. For example, a user may select a media file to be cropped through the cropping setting interface, and set a cropping start time and/or cropping end time.

In the embodiment of the present invention, the cropping software function may be independently developed, or may be implemented through an existing music player or video player.

In the embodiment of the present invention, a processing method of cropping the media file A will be described in conjunction with the electronic device 100 of FIG. 1A. The display screen 194 in the electronic device 100 displays the cutting software C installed on the electronic device 100. The touch sensor 180K of the electronic device 100 receives the operation input by the user and executes the corresponding instruction. The touch sensor 180K may receive a user's operation of clicking the cropping software C, and in response to the operation, start the cropping software C. The display screen 194 displays the interface of the cutting software C. Enter the cropping setting interface of the cropping software C. Through the cropping setting interface of the cropping software C, the user can select the local media file A to be cropped and set the relevant cropping parameters. The cropping software C sends a cropping request to the server according to the user's selection. The electronic device 100 receives the cropping summary information returned by the server processing, and regenerates the cropping file B according to the summary information and the local original media file A. The internal memory 121 of the electronic device 100 may save the cropped file B. The user can directly play the cropped file B, or can share the cropped file B, or perform other operations on the cropped file B, for example, setting the cropped file B as a ringtone.

In the embodiment of the present invention, the cropping software C can also automatically identify the highlights in the media file A to obtain cropping parameters. For example, a few video streams at the moment of a goal, or a climax or chorus part in an audio stream, without requiring the user to manually set.

In the embodiment of the present invention, the electronic device 100 may implement the cutting function of the cutting software C through a cutting module. The cropping function may include one or more of the following functions: identifying a media file identifier, obtaining a cropping request, sending a cropping request, identifying cropping summary information, and generating a cropping file function based on the cropping summary information.

In the embodiment of the present invention, the server may implement a media file clipping function through multiple server devices.

In the embodiment of the present invention, as shown in the schematic structural diagram of the server shown in FIG. 3, the server 300 may include a media cropping server 1021 and a media server 1022. The media cropping server 1021 receives the cropping request sent by the electronic device to crop the media file A, and the media cropping server 1021 identifies the media file identifier and the cropping parameter in the cropping request. The cropping parameter may include a start time, an end time, or a length of time for cropping. The media cropping server 1021 sends the media file identifier to the media server 1022 to obtain the media file corresponding to the media file identifier. The media server 1022 sends the media file corresponding to the media file identifier to the media cropping server 1021. The media cropping server 1021 crops the media file according to the cropping parameters, and sends the generated cropping result to the electronic device. The cropping result information may include starting position and ending position information of the original media file A. Wherein, the relative position information of each file segment marks the start byte position, end byte position, etc. in the media file A.

In the embodiment of the present invention, the cropping result may include cropping summary information. The cropping result information/crop summary information may include byte positions of the start frame and the end frame of the clip to be cut in the media file.

As shown in the structural diagram shown in FIG. 3, the media cropping server 1021 may include an interaction module 1025 and a cropping processing module 1026. The interaction module 1025 is used to interact with the electronic device or the media server 1022. The cropping processing module 1026 is configured to perform cropping processing on the media file A returned by the media server 1022 according to the cropping request, generate the cropping result, and return the cropping result to the interaction module 1025 to The electronic device.

As shown in the structural diagram shown in FIG. 3, the media server 1022 may include an interaction module 1028 and a matching module 1029. The interaction module 1028 is used to interact with the media cropping server 1021. The matching module 1029 is configured to match the corresponding media file according to the media file identifier sent by the media cropping server 1021 received by the interaction module 1028, and send the media file to the media through the interaction module 1028. Media cropping server 1021.

As shown in FIG. 4, in another embodiment of the present invention, the server 400 may include: a processor 10213, a memory 10214, and a transceiver 10215.

Wherein, the processor 10213 can realize media cutting. The transceiver 10215 may receive a cropping request sent by the electronic device 100, where the cropping request includes the media file identification and cropping parameters. The processor 10213 is configured to obtain a corresponding media file according to the media file identifier in the cropping request, and process the media file according to the cropping parameter to obtain cropping result information. The transceiver 10215 is used to send the cropping result information to the electronic device. The memory 10214 may be used to store cropping requests, cropping parameters, media content to be cropped, or media content after cropping.

The embodiment of the invention realizes the cutting of the media file through the server, reduces the time for the electronic device to realize the media cutting and the power consumption generated by the cutting, and improves the processing efficiency of the media file.

In the embodiment of the present invention, since the electronic device cannot recognize all types of media files, the embodiment of the present invention implements the cutting of media files through the server, which not only supports cutting more types of media files, but also the server can be developed. achieve. Applications on electronic devices do not need to be developed and upgraded, making media file cutting easier and easier. After the server implements the cutting process, the server sends the cutting result to the electronic device. The electronic device generates a cropped file according to the cropping result. Compared with directly sending the cropped media file to the electronic device, the solution of the embodiment of the present invention can save resource consumption between the electronic device and the server.

Taking the cutting of music media files as an example, the cutting method in the embodiment of the present invention will be described with reference to FIGS. 5, 6, 7, and 8.

As shown in FIG. 5, it is a schematic diagram of the first application interface 500 of the music player in the electronic device 100 according to an embodiment of the present invention. The first application interface 500 includes a first area 501 and a second area 502. The first area 501 displays the playlist cover of the music player. The second area 502 displays a list of tracks in the playlist of the player. As shown in FIG. 5, track 1, track 2, track 3, ..., track N are displayed on the music player interface.

The user browses the content of the first application interface of the music player and likes track 2 very much, hoping to intercept the climax part of the track 2 as a ringtone of an electronic device. The user clicks on track 2 on the first application interface 500, and the music player displays a second application interface 600, as shown in FIG. The second application interface 600 may include at least one of the following parts: a first part 601, a second part, and a third part. The first part 701 is album cover information, the second part may include a playback progress bar 602, and the third part includes control options. The control options may be at least one control option or option icon: download 603, crop 604, share 605, favorite 606, fast forward play/next control key 608, fast rewind play/previous control key 607. The user clicks the crop 604 option icon on the second application interface, and the music player displays the third application interface 700. As shown in FIG. 7, the third application interface 700 includes a crop setting interface. The third application interface 700 includes crop setting items. The crop setting item is used for setting crop parameters. As shown in FIG. 7, exemplarily, the crop setting item may include a crop control bar, and the user may select to input a crop start time and an end time by moving the start key 701 and the end key 702 on the crop control bar. As shown in Fig. 7, the cutting start time is: 1 minute and 27 seconds, and the cutting end time is: 2 minutes and 02 seconds. The cutting time is: 35 seconds. The third application interface 700 may further include crop control items. As shown in FIG. 7, the cropping control item may be a "start cropping" button 703. The user clicks on the "start cropping" button 703, the music player obtains the file identification and cropping parameters of track 2, and sends a cropping request to the server.

In the embodiment of the present invention, as shown in FIG. 7, the third application interface of the music player may further include album cover information 704.

In the embodiment of the present invention, the server receives the file identifier of the track 2 in the crop request, and obtains the corresponding file of the track according to the file identifier. After acquiring the track 2 file, the server crops the track 2 file, and sends the cropping result to the music player.

The music player reassembles a new media file according to the track 2 and the cutting result to generate a cutting file. The music player may prompt the user on the application interface. As shown in Figure 8, the user is prompted to save the crop file. The fourth application interface 800 shown in FIG. 8 may further include an audition button 802, or a ringtone button 803, or album information 801. The embodiment of the present invention does not limit the information for prompting the user, and can prompt the user to complete the cropping, or prompt the user to operate the cropped file, or prompt the user to save the cropped file, etc. Through the prompt interface, the user can choose to play the cropped file, or set the cropped file to ring tone and other operations.

With reference to FIG. 9, an example of a method for cropping the media file by the server is as follows.

9 is a schematic structural diagram of a media file in an embodiment of the present invention. For example, the playing time of the media file is 150 seconds, and its content includes C0, C1, C2, C3, C4, C5, C6...C150. C0 is the media file header information, usually describing the name of the work, artist name, etc. C1, C2, C3, C4, C5, C6...C150 respectively represent the media content per second. The offsets X0, X1 represent the start and end points of C0 bytes in the media file. X1 indicates the end point of C0, but it is not included in the content of C0. X1 is the starting point of C1 and is included in the content of C1. X2 indicates the end point of C1, but it is not included in the content of C1. Similarly, X1, X2, X3, X4, X5, X6...Xn respectively represent the starting point and end point of bytes of each piece of content in C1, C2, C3, C4, C5, C6...Cn in the media file. For the media file, n is a positive integer less than or equal to 150.

In the embodiment of the present invention, for example, when the playing time of the media file is m seconds, its content may be C0, C1, C2, C3, C4, C5, C6...Cm. m is a positive integer.

As shown in FIGS. 5 and 6, taking the media file as track 2 as an example, the playing time of the track 2 is 150 seconds. After the user plays track 2, the electronic device successfully caches the track 2. Alternatively, after the user successfully downloads the track 2, the user may choose to crop the track 2.

As shown in Figure 7, the user sets the cropping parameters as follows: 1 minute 27 seconds-2 minute 02 seconds. Indicates that the user wishes to crop the media content of this time period.

After the user clicks the "start cropping" button, the electronic device obtains the file identification and cropping parameters of track 2 according to the user's operation. The electronic device initiates a crop request to the server. The cropping request may include the file identification of the track 2, the cropping request time: 1 minute and 27 s, and the cropping time is 35 seconds.

In the embodiment of the present invention, the cropping request may also include the file identifier of the track 2, the cropping start time: 1 minute and 27 seconds, and the cropping end time: 2 minutes and 02 seconds. The embodiments of the present invention do not limit specific cutting parameters, and the cutting parameters may be used for cutting purposes.

The server performs processing according to the received clipping request, obtains a clipping result, and returns the clipping result to the electronic device. An example of returning the cropping result is as follows:

segment0: start=X’0, end=X’1;

segment1:content={CC};

segment2: start=X87, end=X122.

The meanings of the parameters in the above cropping results are explained as follows:

Part 0: Start at offset X’0 and end at offset X’1.

Part 1: The content is {CC}, the content of this part is optional. The server can modify the file header information through this part. For example, after the original song name, add the "Climax Edition" name suffix.

Part 2: Start at offset X87 and end at offset X122.

In the embodiment of the present invention, X'0, X'1, X87, and X122 respectively represent the offset from the byte position of the original track 2 file.

The content {CC} in the first part is file header information edited by the server. Assume that the length of CC is Z. Z is a positive integer. For example, the song title of the track 2 is modified. The content in segment1 points to the content {CC}, and the content of {CC} is the header information of the media file edited by the server. By hexadecimal representation example, the content is similar to 0x54 0x49 0x54 0x32 0x00 0x00 0x00 0x0A 0x00 0x00 0x03 0x78 0x78 0x28 0x30 0x7E 0x32 0x73 0x29 0x00. This part of the content is some media file header information that has changed from the original media file, for example, the ID3 tag information of the mp3 file.

In the embodiment of the present invention, the above segment0 and segment1 constitute a file header of the cropped file. The segment1 part is an optional byte. The server may modify the information of the file header of the cropped file through segment1. The server may carry the modification information through the segment1 field and return it to the electronic device. For example, the name of the song of the track 2 is: "nunchaku", and the name of the cropped file after modification is: "nunchaku color ring version".

In the embodiment of the present invention, generally, the parameter X'1 in the segment0 is less than or equal to X1. When X'1 is equal to X1, the server does not modify the file header information of the track 2, nor returns the content of segment1.

After receiving the cropping result returned by the server, the electronic device generates a cropping file according to the cropping result. The process of the electronic device regenerating the crop file is described with reference to FIG. 10. 10 is a schematic diagram of the structure of the cropped file.

The electronic device calculates the file information of the cropped file according to the track 2 and the cropping result: the start and end points of C'0 are X'0 and X'1, respectively, and the length of {CC} is Z, C87- The start and end points corresponding to the content of C121 are X87 and X122, respectively. X87 and X122 are offsets from the byte position of the original track 2 file.

The electronic device extracts the X’0 to X’1 content in the original track 2, the content corresponding to {cc} and the content corresponding to X87 to X122 according to the offset, and regenerates the crop file. The contents corresponding to X87 to X122 are the parts of C87, C88...C121 in the original track 2.

After the electronic device generates the crop file, the user interface of the music player may be used to prompt the user that the crop file has been generated. The electronic device may prompt the user to save, audition, set a ringtone, or perform other operations on the cropped file.

FIG. 11 is a schematic diagram of media files in an embodiment of the present invention. As shown in FIG. 11, the media file is an MP3 file. The media content includes: ID3V2, content from 0 to 1 second, content from 1 to 2 seconds, and content from 2 to 3 seconds. ID3 is generally located within a few bytes at the beginning or end of an mp3 file, with information about the mp3's singer, title, album name, year, style, etc. This information is called ID3 information, which is divided into Two versions, v1 and v2. Among them: The ID3 of the v1 version is 128 bytes at the end of the mp3 file, starting with the three characters of TAG, followed by the song information. The v2 version is generally located at the beginning of mp3, and can store large amounts of information such as lyrics and pictures of the album. ID3 tag is the additional information of the songs in the MP3 music file. It can attach the artist, author and other categories of information in the MP3 to facilitate the management of many music.

As shown in FIG. 11, the content of ID3V2 includes the content of the header fields whose file contents are h1 to h10 and 0x54 to 0x00. The 0 to 1 second includes the media content of p11 to p13. The first to second seconds include media content from p21 to p26. Media content from p31 to p37 is included in the second to third seconds. It should be noted that h1 to h10 does not mean that the content is only 10 bytes, just an example, the actual size may be larger than this.

As shown in FIG. 12, the file header of the cropped media returned by the server is added with 0x28, 0x30, 0x7E, 0x32, 0x73, and 0x29 in the middle of the last 0x78 and 0x00 in ID3V2 in FIG. The contents of these newly added header files represent: the newly added contents of the file title. For example, the original file title is xx, modified to xx (0-2s); the newly added content of the file title, that is, these few characters represent 0 to 2 seconds. The cropped content is the content of 0 to 1 second and 1 to 2 seconds, that is, the content of p11 to p26.

The embodiment of the present invention reduces the time for the electronic device to realize the media cutting and the power consumption generated by the cutting by implementing the cutting of the media file on the server.

In addition, since the electronic device cannot recognize all types of media files, the embodiment of the present invention implements the cutting of media files in the server, which can achieve the cutting of almost all media files, making the cutting of media files simpler and easier.

In addition, after the server realizes the cropping, the cropped cropping result is sent to the electronic device, and the electronic device reassembles the cropped file. Compared with directly sending the cropped media file to the electronic device, the solution of the embodiment of the present invention can save the bandwidth between the electronic device and the server.

As used in the above embodiments, depending on the context, the term "when" may be interpreted to mean "if..." or "after" or "in response to determination..." or "in response to detection...". Similarly, depending on the context, the phrases "at the time of determination" or "if detected (the stated condition or event)" may be interpreted to mean "if determined..." or "in response to determination..." or "detected (The stated condition or event)" or "in response to the detection (the stated condition or event)".

In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions according to the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a dedicated computer, a computer network, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be from a website site, computer, server or data center Transmission to another website, computer, server or data center via wired (such as coaxial cable, optical fiber, digital subscriber line) or wireless (such as infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device including a server, a data center, and the like integrated with one or more available media. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, DVD), or a semiconductor medium (for example, a solid-state hard disk), or the like.

A person of ordinary skill in the art may understand that all or part of the process in the method of the above embodiment may be implemented by a computer program instructing relevant hardware. The program may be stored in a computer-readable storage medium, and when the program is executed , May include the processes of the foregoing method embodiments. The foregoing storage media include various media that can store program codes, such as ROM or random storage memory RAM, magnetic disks, or optical disks.

Claims

A method for media file cropping, characterized in that it includes:

The electronic device obtains the media file identifier and the cropping parameters, and sends a cropping request to the server according to the cropping parameters;

The electronic device receives the cropping result information returned by the server;

The electronic device generates a crop file based on the crop result information and the media file.
The method according to claim 2, wherein the electronic device acquiring the media file identification and cropping parameters comprises: the electronic device receiving the user operation and acquiring the media file identification and cropping parameters.
The method according to claim 1 or 2, wherein the cropping parameters include at least two of the following parameters: a cropping start time, a cropping end time, and a cropping duration.
The method according to any one of claims 1-3, wherein the cropping result information includes byte positions of the start frame and the end frame of the clip to be cut in the media file.
The method according to any one of claims 1-4, wherein the cropping result information further includes file header information of the cropping file.
The method according to claim 5, wherein the file header information is modified by the server.
The method according to any one of claims 1-6, wherein the method further comprises: the electronic device displaying a cropping setting interface, and receiving a user operation through the cropping setting interface to obtain cropping parameters.
The method according to any one of claims 1-7, wherein the method further comprises: the electronic device displaying a crop file operation interface, and the crop file operation interface is used to control the crop file.
The method according to any one of claims 1-8, wherein the method further comprises: saving the cropped file; or, listening to the cropped file; or, setting the cropped file as a ring tone.
The method according to any one of claims 1-9, wherein the electronic device clips the media file through music playback software or video playback software.
An electronic device for cutting media files, characterized in that the electronic device includes: a display screen, a processor and a memory, wherein,

The memory is used to store programs;

The processor is used to call the program to cause the electronic device to perform the method according to any one of claims 1-10.
A computer-readable storage medium, including instructions, characterized in that when it runs on a computer, it causes the computer to perform the method according to any one of claims 1-10.
A method for media file cropping, characterized in that it includes:

The server receives a media file cropping request sent by the electronic device, where the cropping request includes the media file identification and cropping parameters;

The server obtains the media file according to the media file identifier, and processes the media file according to the cropping parameter to obtain cropping result information;

The cropping result information is sent to the electronic device, and the cropping result information is used to cause the electronic device to generate a cropping file.
The method according to claim 13, wherein the cutting parameters include at least two of the following parameters: start time of cutting, end time of cutting, and duration of cutting.
The method according to claim 13 or 14, wherein the cropping result information includes byte positions of the start frame and the end frame of the clip to be cut in the media file.
The method according to any one of claims 13-15, wherein the cropping result information further includes file header information of the cropping file.
The method according to claim 16, wherein the server modifies the file header information.
A server for cutting media files, characterized in that the electronic device includes: a processor and a memory, wherein,

The memory is used to store programs;

The processor is used to call the program to cause the server to execute the method according to any one of claims 13-17.
A computer-readable storage medium, including instructions, characterized in that, when it runs on a computer, it causes the computer to perform the method according to any one of claims 13-17.