WO2023024803A1 - Procédé et appareil de génération de couverture dynamique, dispositif électronique, support et produit-programme - Google Patents

Procédé et appareil de génération de couverture dynamique, dispositif électronique, support et produit-programme Download PDF

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Publication number
WO2023024803A1
WO2023024803A1 PCT/CN2022/108072 CN2022108072W WO2023024803A1 WO 2023024803 A1 WO2023024803 A1 WO 2023024803A1 CN 2022108072 W CN2022108072 W CN 2022108072W WO 2023024803 A1 WO2023024803 A1 WO 2023024803A1
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Prior art keywords
video
preset number
video file
video frame
dynamic cover
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PCT/CN2022/108072
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English (en)
Chinese (zh)
Inventor
王敏
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北京字跳网络技术有限公司
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Publication of WO2023024803A1 publication Critical patent/WO2023024803A1/fr

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/70—Information retrieval; Database structures therefor; File system structures therefor of video data
    • G06F16/73—Querying
    • G06F16/738—Presentation of query results
    • G06F16/739—Presentation of query results in form of a video summary, e.g. the video summary being a video sequence, a composite still image or having synthesized frames

Definitions

  • the present application relates to the technical field of short videos, and in particular to a dynamic cover generation method, device, electronic equipment, media and program products.
  • Video covers generally exist in various list scenarios of short videos, and are used to display relevant information of the videos, so that users can choose the videos they are interested in to watch.
  • Video covers include: video dynamic covers and video static covers. Compared with video static covers, video dynamic covers are widely loved by users because they can display more information and have a stronger sense of interaction.
  • multiple video frames can be played in order to form a moving picture effect.
  • multiple repeated video frames can be added in reverse order to avoid abruptness.
  • this method consumes more bandwidth traffic and occupies more storage space.
  • the present application provides a dynamic cover generation method, device, electronic equipment, media and program products.
  • a method for generating a video dynamic cover including:
  • the preset number of video frame pictures are reciprocated and cyclically played, so as to generate the dynamic cover of the video file.
  • the method before acquiring a preset number of consecutive video frames in the video file, the method further includes:
  • the acquisition of a continuous preset number of video frames in the video file includes:
  • the acquisition of a preset number of consecutive video frames in the video file includes:
  • the method includes:
  • target text information is acquired, and the target text information is displayed on the dynamic cover.
  • the method also includes:
  • a target emoticon image is acquired, and the target emoticon image is displayed on the dynamic cover.
  • the method before acquiring a continuous preset number of video frames in the video file, the method also includes:
  • the original video file stored locally is obtained, and the original video file is edited to obtain the video file.
  • a video dynamic cover generation device including:
  • a video frame image acquisition module configured to acquire a continuous preset number of video frame images in the video file
  • the dynamic cover generation module is used to perform reciprocating and cyclic playback of the preset number of video frames according to the chronological order of the preset number of video frames, so as to generate the dynamic cover of the video file.
  • the device also includes:
  • a video frame picture display module configured to display multiple video frame pictures in the video file in response to a display operation for each video frame picture in the video file;
  • the video frame image acquisition module is specifically configured to acquire a continuous preset number of video frame images in response to the selection operation for the plurality of video frame images.
  • the video frame acquisition module is specifically configured to perform scene recognition on each video frame in the video file, and determine the key video frame in the video file based on the scene recognition result; from the video file Acquiring a preset number of consecutive video frames including the key video frame.
  • the device includes:
  • the scene recognition module is used to perform scene recognition on the preset number of video frames after the dynamic cover of the video file is generated to obtain a scene recognition result;
  • a text information matching module configured to determine one or more text messages matching the scene recognition result, and display the one or more text messages
  • a target text information display module configured to acquire target text information in response to a selection operation on the one or more pieces of text information, and display the target text information on the dynamic cover.
  • the device also includes:
  • the expression recognition module is used to perform expression recognition on the person if the preset number of video frames contains characters after the dynamic cover of the video file is generated, and obtain an expression recognition result;
  • An emoticon image matching module configured to determine one or more emoticon images matching the expression recognition result, and display the one or more emoticon images
  • a target emoticon image display module configured to acquire a target emoticon image in response to a selection operation on the one or more emoticon images, and display the target emoticon image on the dynamic cover.
  • the device also includes:
  • the first video file acquisition module is configured to generate the video file in response to the shooting operation for the target object; or,
  • the second video file obtaining module is used to obtain the video file stored locally, or,
  • the third video file acquisition module is configured to acquire locally stored original video files, and edit the original video files to obtain the video files.
  • an electronic device including: a processor, the processor is configured to execute a computer program stored in a memory, and when the computer program is executed by the processor, the method described in the first aspect is implemented .
  • a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, the method described in the first aspect is implemented.
  • a computer program product which causes the computer to execute the method described in the first aspect when the computer program product is run on a computer.
  • the smoothness of the dynamic cover of the video can be guaranteed without the problem of flickering; on the other hand, since no repeated video frames are added, That is to say, the repeated video frames are reduced, and the storage space occupied by the dynamic cover will be smaller, which can effectively reduce the traffic consumed by network transmission, and at the same time occupy less memory when displaying the dynamic cover.
  • FIG. 1 is a schematic diagram of a video frame picture contained in a video dynamic cover in the related art
  • FIG. 2 shows a schematic diagram of the system architecture of an exemplary application environment where the method for generating a video dynamic cover according to the embodiment of the present application can be applied;
  • FIG. 3 is a flow chart of a method for generating a video dynamic cover in an embodiment of the present application
  • FIG. 4 is a schematic diagram of a video frame picture contained in a video dynamic cover in an embodiment of the present application
  • FIG. 5 is a schematic diagram of reciprocating and cyclically playing a preset number of video frames in the embodiment of the present application
  • Fig. 6 is another flow chart of the video dynamic cover generation method in the embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a video dynamic cover generating device in an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of an electronic device in an embodiment of the present application.
  • multiple repeated video frames can be added in reverse order and played in order to form a moving picture effect.
  • the resource file used to generate the video dynamic cover includes 6 video frame pictures, and the subscripts are 0, 1, 2, 3, 4, and 5 respectively.
  • multiple repeated video frames may be added in reverse order behind the sixth video frame.
  • a fifth video frame, a fourth video frame, and a third video frame may be sequentially added behind the sixth video frame to form nine video frames.
  • the seventh video frame picture (the video frame picture with the subscript 6) and the fifth video frame picture (the video frame picture with the subscript 4) are the same video frame picture
  • the frame picture (video frame picture with subscript 7) and the 4th video frame picture (video frame picture with subscript 3) are the same video frame picture
  • the 9th video frame picture (video frame picture with subscript 8) picture) and the third video frame picture (the video frame picture with subscript 2) are the same video frame picture.
  • the above nine video frames can be played in a loop in the order from subscript 0 to subscript 8, and then from 0 to 8. Due to the existence of repeated video frames, the video dynamic cover will take up more storage space, and it will also consume more bandwidth and occupy more device memory when displaying the video dynamic cover. This is a problem for low-end mobile devices more prominent.
  • the embodiment of the present application provides a dynamic cover generation method, device, electronic equipment, media and program products, which can reduce the storage space occupied by the video dynamic cover under the premise of ensuring the smooth visual experience of the video dynamic cover. Space, and reduce memory and traffic consumption when playing video dynamic cover.
  • Fig. 2 shows a schematic diagram of a system architecture of an exemplary application environment to which the method for generating a video dynamic cover according to the embodiment of the present application can be applied.
  • the system architecture 100 may include one or more of a terminal device 101 , a terminal device 102 , and a terminal device 103 , a network 104 and a server 105 .
  • the network 104 is used as a medium for providing communication links between the terminal device 101 , the terminal device 102 , the terminal device 103 and the server 105 .
  • Network 104 may include various connection types, such as wires, wireless communication links, or fiber optic cables, among others.
  • the terminal device 101, the terminal device 102, and the terminal device 103 may be various electronic devices with display screens, including but not limited to desktop computers, portable computers, smart phones, and tablet computers. It should be understood that the numbers of terminal devices, networks and servers in Fig. 1 are only illustrative. According to implementation needs, there can be any number of terminal devices, networks and servers.
  • the server 105 may be a server cluster composed of multiple servers.
  • the video dynamic cover generation method provided in the embodiment of the present application can be executed by terminal devices. After the terminal device 101, the terminal device 102, and the terminal device 103 generate the video dynamic cover according to the video dynamic cover generation method provided in the embodiment of the present application, they can generate the video dynamic cover. The video dynamic cover of file and this video file is uploaded in the server 105.
  • FIG. 3 is a flowchart of a method for generating a video dynamic cover in an embodiment of the present application, which may include the following steps:
  • a video file is composed of multiple video frames, and a preset number of video frames can be obtained from the video file to generate a video dynamic cover.
  • the preset number may be the same as the number of resource files used in the aforementioned "reverse order adding method", for example, it may be 5, 6, 7, and so on. In this way, while realizing the video dynamic cover, the displayed content of the video dynamic cover may not be reduced.
  • the video dynamic cover in Fig. 1 is composed of 9 video frame pictures, including 6 original video frame pictures and 3 repeated video frame pictures.
  • repeated video frames (subscripts 6, 7, and 8) can be removed.
  • 6 original video frames are used to generate video dynamic covers.
  • S320 Perform reciprocating and cyclic playback of the preset number of video frames according to the time sequence of the preset number of video frames, so as to generate a dynamic cover of the video file.
  • Fig. 5 is a schematic diagram of reciprocating and cyclically playing a preset number of video frame pictures in the embodiment of the present application. After the video frame with the subscript 5, it is played in reverse order to the video frame with the subscript 0, and the above process is repeated, so as to achieve reciprocating loop playback.
  • the video frame picture with the subscript 8 in Figure 1 is the same as the video frame picture with the subscript 2, when returning from the video frame picture with the subscript 8 to the video frame picture with the subscript 0 for playback, the That is to say, when jumping directly from the video frame picture with the subscript 2 to the video frame picture with the subscript 0, the video frame picture with the subscript 1 jumps and flickers.
  • the embodiment of the present application since the adjacent video frames are all continuous during the above-mentioned reciprocating loop playback process, therefore, there will be no problem of picture jumping and flashing, so that it can better Achieve a smoothing effect.
  • the preset number of video frame pictures are reciprocated and cyclically played, that is, from the preset number of video frame pictures
  • the last video frame is played in reverse order to the first video frame
  • the first video frame is played in order to the last video frame Screens, and so on, are played back and forth in this way.
  • the smoothness of the dynamic cover of the video can be guaranteed without the problem of flickering; on the other hand, since no repeated video frames are added, That is to say, the repeated video frames are reduced, and the storage space occupied by the dynamic cover will be smaller, which can effectively reduce the traffic consumed by network transmission, and at the same time occupy less memory when displaying the dynamic cover. Taking a single video file as an example, it can save about 1.5M of memory, effectively reducing the memory usage.
  • FIG. 6 is another flow chart of a method for generating a video dynamic cover in the embodiment of the present application, which may include the following steps:
  • the video file may be a video file shot by the user in real time, and the user may shoot the target object through the terminal device.
  • the terminal device generates a video file in response to the shooting operation on the target object.
  • the video file may also be a locally pre-stored video file, and the locally stored video file may be obtained directly, or the locally stored original video file may be obtained, and the original video file may be edited to obtain the video file.
  • an interface for selecting a video frame may be provided for the user, and the user may select a video frame of interest in the interface as a resource file of the video dynamic cover.
  • the user may first click a button to display a video frame, and the terminal device displays multiple video frames in the video file in response to a display operation for each video frame in the video file.
  • the user selects a video frame picture of interest from among the multiple video frame pictures, and performs a click operation, and the terminal device acquires a continuous preset number of video frame pictures in response to the selection operation on the multiple video frame pictures.
  • a preset number of video frame pictures may also be automatically acquired. For example, scene recognition may be performed on each video frame in the video file, and a key video frame in the video file may be determined based on the scene recognition result.
  • a key video frame picture usually refers to a video frame picture containing important content, and there may be one or more key video frames. For example, for a video of a person, a video frame containing key actions of the person may be used as a key video frame.
  • a preset number of continuous video frame pictures including key video frame pictures are obtained from the video file. For example, one or more video frames are selected before and/or after the key video frame to obtain a continuous preset number of video frames.
  • S620 Perform reciprocating and cyclic playback of the preset number of video frames according to the time sequence of the preset number of video frames, so as to generate a dynamic cover of the video file.
  • S630 Perform scene recognition on a preset number of video frames to obtain a scene recognition result, determine one or more text messages matching the scene recognition result, and display the one or more text messages.
  • relevant text information may also be added.
  • a mapping relationship between scenes and text information may be established in advance, and scene recognition results are obtained by performing scene recognition on a preset number of video frames. According to the above mapping relationship, the text information matching the scene recognition result is determined, and the text information is displayed for the user to select.
  • the text information matching the scene can be: "study hard and make progress every day”; or "the samples that study hard are so cute” and so on. If the birthday scene is identified, it can be determined that the text information matching the scene can be "happy birthday” and the like.
  • S640 in response to a selection operation on one or more pieces of text information, acquire target text information, and display the target text information in the dynamic cover.
  • the user can select one text message from multiple text messages, or select two or more text messages as target text messages, and display the target text messages in the dynamic cover.
  • the target text information can be displayed in a preset area of the dynamic cover, and of course, the user can adjust the display area of the target text information.
  • a preset number of video frames contain a person, perform expression recognition on the person, obtain an expression recognition result, determine one or more expression images matching the expression recognition result, and display the one or more expression images.
  • the preset number of video frames contains characters
  • the expression recognition of the characters in the video frame can be performed to obtain the expression recognition results.
  • the expression recognition results can include anger, nausea, fear, happiness, sadness, surprise, neutrality and so on.
  • one or more emoticon images that match the representation recognition result may be determined, and one or more emoticon images are displayed for the user to select.
  • S660 in response to the selection operation on one or more emoticon images, acquire target emoticon images, and display the target emoticon images in the dynamic cover.
  • the user can select an interested emoticon image from one or more emoticon images as a target emoticon image, and display the target emoticon image in the dynamic cover. In this way, the content of the video dynamic cover can be displayed more vividly.
  • the video dynamic cover generation method of the embodiment of the present application after obtaining a preset number of continuous video frame images in the video file, the video dynamic cover is generated by reciprocating and cyclically playing, which can reduce the dynamic cover while ensuring the smoothness of the dynamic cover.
  • the repeated video frames make the storage space occupied by the video dynamic cover smaller, which can effectively reduce the traffic consumed by network transmission and reduce the memory occupied when displaying the dynamic cover.
  • text information or emoticon images can also be added to the video dynamic cover, so that users who watch the video dynamic cover can understand the content of the video file more accurately, so as to accurately select the video file of interest to watch.
  • the embodiment of the present application also provides a video dynamic cover generation device, see Fig. 7, the video dynamic cover generation device 700 includes:
  • a video frame image acquisition module 710 configured to acquire a continuous preset number of video frame images in the video file
  • the dynamic cover generation module 720 is configured to perform reciprocating and cyclic playback of the preset number of video frames according to the chronological order of the preset number of video frames, so as to generate a dynamic cover of the video file.
  • a video frame image acquisition module configured to acquire a continuous preset number of video frame images in the video file
  • the dynamic cover generation module is used to perform reciprocating and cyclic playback of the preset number of video frame pictures according to the chronological order of the preset number of video frame pictures, so as to generate the dynamic cover of the video file.
  • the video dynamic cover generation device 700 also includes:
  • a video frame picture display module used to display multiple video frame pictures in the video file in response to the display operation for each video frame picture in the video file;
  • the video frame image acquisition module is specifically configured to acquire a continuous preset number of video frame images in response to the selection operation for multiple video frame images.
  • the video frame image acquisition module is specifically used to perform scene recognition on each video frame image in the video file, determine the key video frame image in the video file based on the scene recognition result; obtain the image containing the key video frame image from the video file A preset number of consecutive video frames.
  • the video dynamic cover generation device 700 also includes:
  • the scene recognition module is used to perform scene recognition on a preset number of video frame pictures after generating the dynamic cover of the video file to obtain a scene recognition result;
  • a text information matching module configured to determine one or more text messages matching the scene recognition result, and display one or more text messages
  • the target text information display module is configured to acquire target text information in response to a selection operation on one or more text messages, and display the target text information in the dynamic cover.
  • the video dynamic cover generation device 700 also includes:
  • the facial expression recognition module is used to perform facial expression recognition on the characters if the preset number of video frames contain characters after the dynamic cover of the video file is generated, and obtain the facial expression recognition result;
  • An emoticon image matching module configured to determine one or more emoticon images matched with the emoticon recognition result, and display one or more emoticon images;
  • the target emoticon image display module is configured to acquire the target emoticon image in response to a selection operation on one or more emoticon images, and display the target emoticon image in the dynamic cover.
  • the video dynamic cover generation device 700 also includes:
  • a first video file acquisition module configured to generate a video file in response to a shooting operation for a target object
  • the second video file obtaining module is used to obtain a locally stored video file, or,
  • the third video file obtaining module is used to obtain the original video file stored locally, and edit the original video file to obtain the video file.
  • an electronic device including: a processor; a memory for storing processor-executable instructions; wherein, the processor is configured to execute the above-mentioned video dynamic cover art in this exemplary embodiment generate method.
  • FIG. 8 is a schematic structural diagram of an electronic device in an embodiment of the present application. It should be noted that the electronic device 800 shown in FIG. 8 is only an example, and should not limit the functions and scope of use of this embodiment of the present application.
  • an electronic device 800 includes a central processing unit (CPU) 801, which can operate according to a program stored in a read-only memory (ROM) 802 or a program loaded from a storage section 808 into a random access memory (RAM) 803 Instead, various appropriate actions and processes are performed.
  • ROM read-only memory
  • RAM random access memory
  • various programs and data necessary for system operation are also stored.
  • the central processing unit 801, ROM 802, and RAM 803 are connected to each other through a bus 804.
  • An input/output (I/O) interface 805 is also connected to the bus 804 .
  • the following components are connected to the I/O interface 805: an input section 806 including a keyboard, a mouse, etc.; an output section 807 including a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker; a storage section 808 including a hard disk, etc. and a communication section 809 including a network interface card such as a local area network (LAN) card, a modem, or the like.
  • the communication section 809 performs communication processing via a network such as the Internet.
  • Drive 810 is also connected to I/O interface 805 as desired.
  • a removable medium 811 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is mounted on the drive 810 as necessary so that a computer program read therefrom is installed into the storage section 808 as necessary.
  • the processes described above with reference to the flowcharts can be implemented as computer software programs.
  • the embodiments of the present application include a computer program product, which includes a computer program carried on a computer-readable medium, where the computer program includes program codes for executing the methods shown in the flowcharts.
  • the computer program may be downloaded and installed from a network via communication portion 809 and/or installed from removable media 811 .
  • the central processing unit 801 When the computer program is executed by the central processing unit 801, various functions defined in the apparatus of the present application are performed.
  • a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, the above-mentioned method for generating a video dynamic cover is realized.
  • the computer-readable storage medium described in this application may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or device, or any combination thereof. More specific examples of computer-readable storage media may include, but are not limited to, electrical connections with one or more conductors, portable computer diskettes, hard disks, random access memory, read-only memory, erasable programmable read-only memory (EPROM) or flash memory), fiber optics, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.
  • a computer-readable storage medium may be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.
  • Program code contained on a computer readable storage medium may be transmitted using any appropriate medium, including but not limited to: wireless, wires, optical cables, radio frequency, etc., or any suitable combination of the above.
  • a computer program product is also provided.
  • the computer program product is run on a computer, the computer is made to execute the above method for generating a dynamic video cover.

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Abstract

L'invention concerne un procédé et un appareil de génération de couverture dynamique, un dispositif électronique, un support et un produit-programme, appliqués au domaine technique des micro-vidéos. Le procédé comprend : l'obtention d'un nombre prédéfini de trames d'image vidéo continues dans un fichier vidéo (S310) ; et l'exécution d'une lecture cyclique sur le nombre prédéfini de trames d'image vidéo selon une séquence temporelle du nombre prédéfini de trames d'image vidéo pour générer une couverture dynamique du fichier vidéo (S320).
PCT/CN2022/108072 2021-08-23 2022-07-27 Procédé et appareil de génération de couverture dynamique, dispositif électronique, support et produit-programme WO2023024803A1 (fr)

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CN113096218A (zh) * 2019-12-20 2021-07-09 腾讯科技（深圳）有限公司 动态图像播放方法、装置、存储介质和计算机设备
CN111491173A (zh) * 2020-04-15 2020-08-04 腾讯科技（深圳）有限公司 一种直播封面确定方法、装置、计算机设备及存储介质
CN113641853A (zh) * 2021-08-23 2021-11-12 北京字跳网络技术有限公司 动态封面生成方法、装置、电子设备、介质及程序产品

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