CN112532906A - Video playback method and device, electronic equipment and storage medium - Google Patents
Video playback method and device, electronic equipment and storage medium Download PDFInfo
- Publication number
- CN112532906A CN112532906A CN202011279736.9A CN202011279736A CN112532906A CN 112532906 A CN112532906 A CN 112532906A CN 202011279736 A CN202011279736 A CN 202011279736A CN 112532906 A CN112532906 A CN 112532906A
- Authority
- CN
- China
- Prior art keywords
- video
- played back
- speed
- preset
- playing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 39
- 230000015654 memory Effects 0.000 claims description 9
- 238000004364 calculation method Methods 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 6
- 238000012545 processing Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000012805 post-processing Methods 0.000 description 2
- 238000013139 quantization Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000007723 transport mechanism Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/91—Television signal processing therefor
- H04N5/93—Regeneration of the television signal or of selected parts thereof
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
Abstract
The invention discloses a video playback method, a video playback device, electronic equipment and a storage medium. The video playback method comprises the following steps: acquiring a video to be played back; judging whether the video to be played back contains interesting features or not; setting the playing speed of a first video segment containing the interesting characteristic as a first preset speed, and setting the playing speed of a second video segment not containing the interesting characteristic as a second preset speed; and playing the video to be played back according to the set first preset speed and the second preset speed. According to the invention, the objects concerned (or interested) by the user are played at normal speed through an intelligent algorithm, and objects not concerned are played at multiple times, so that the user requirements are met, and the video playback efficiency is improved.
Description
Technical Field
The present invention relates to the field of image processing technologies, and in particular, to a video playback method and apparatus, an electronic device, and a storage medium.
Background
With the popularization of video monitoring systems in various industries and the continuous expansion of the application field of multimedia technologies, the post-processing of video data becomes more and more extensive. In the related art, the image information in the video record is acquired by adopting a mode of manually checking the record playback. However, the current video recording already presents the character of quantization in the sea, and on one hand, the adoption of the method can consume a great deal of manpower and time, and has the problems of low efficiency and high cost. On the other hand, because the video is normally played, some important information or information which the user wants to pay attention to is easily missed by manual checking.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a video playback method, a video playback device, electronic equipment and a storage medium, which can efficiently and quickly perform video playback.
According to a first aspect of the present invention, a video playback method includes:
acquiring a video to be played back;
judging whether the video to be played back contains interesting features or not;
setting the playing speed of a first video segment containing the interesting characteristic as a first preset speed, and setting the playing speed of a second video segment not containing the interesting characteristic as a second preset speed;
and playing the video to be played back according to the set first preset speed and the second preset speed.
The video playback method provided by the embodiment of the invention at least has the following beneficial effects:
the method comprises the steps of judging whether the video to be played back contains interesting features or not by acquiring the video to be played back, and setting the playing speed of a first video segment containing the interesting features as a first preset speed; setting the playing speed of a second video segment which does not contain the interesting characteristics as a second preset speed; the video to be played back is played according to the set first preset speed and the second preset speed, so that objects concerned (or interested) by the user are played at a normal speed, and objects not concerned are played at a multiple speed, so that the user requirement is met, and the video playback efficiency is improved.
According to some embodiments of the present invention, the determining whether the feature of interest exists in the video to be played back includes:
identifying the video to be played back to generate a feature code;
calculating the similarity between the feature code and a preset feature code;
and judging whether the video to be played back has interesting features according to the similarity.
According to some embodiments of the invention, the first predetermined rate is less than the second predetermined rate.
According to some embodiments of the invention, the video to be played back is a surveillance video.
According to some embodiments of the invention, the feature of interest comprises a human face or a car.
A video recording and playback apparatus according to a second aspect of the present invention includes:
the acquisition module is used for acquiring the video to be played back;
the judging module is used for judging whether the video to be played back contains the interesting features;
the setting module is used for setting the playing speed of a first video segment containing the interesting characteristic as a first preset speed and setting the playing speed of a second video segment not containing the interesting characteristic as a second preset speed;
and the playing module is used for playing the video to be played back according to the set first preset speed and the second preset speed.
According to some embodiments of the invention, the determining module comprises:
the identification module is used for identifying the video to be played back and generating a feature code;
the calculation module is used for calculating the similarity between the feature codes and preset feature codes;
and the sub-judgment module is used for judging whether the interesting features exist in the video to be played back according to the similarity.
According to some embodiments of the invention, the first predetermined rate is less than the second predetermined rate.
According to some embodiments of the invention, the video to be played back is a surveillance video.
According to some embodiments of the invention, the feature of interest comprises a human face or a car.
An electronic device according to an embodiment of the third aspect of the present invention is characterized by including:
at least one processor, and,
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores instructions executable by the at least one processor to cause the at least one processor to perform:
the video playback method according to the first aspect.
According to some embodiments of the invention, the electronic device is a network video recorder.
A computer-readable storage medium according to a fourth aspect embodiment of the present invention, the computer-readable storage medium storing computer-executable instructions for causing a computer to perform:
the video playback method according to the first aspect.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The invention is further described with reference to the following figures and examples, in which:
fig. 1 is a schematic flowchart of a video playback method according to an embodiment of the present invention;
fig. 2 is an application scenario diagram of a video playback method according to an embodiment of the present invention;
fig. 3 is a view of an application scenario of a video playback method according to another embodiment of the present invention;
fig. 4 is a flowchart illustrating a video playback method according to another embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality is one or more, the meaning of a plurality is two or more, and the above, below, exceeding, etc. are understood as excluding the present numbers, and the above, below, within, etc. are understood as including the present numbers. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
With the popularization of video monitoring systems in various industries and the continuous expansion of the application field of multimedia technologies, the post-processing of video data becomes more and more extensive. In the related art, the image information in the video record is acquired by adopting a mode of manually checking the record playback. However, the current video recording already presents the character of quantization in the sea, and on one hand, the adoption of the method can consume a great deal of manpower and time, and has the problems of low efficiency and high cost. On the other hand, because the video is normally played, some important information or information which the user wants to pay attention to is easily missed by manual checking. Therefore, it is necessary to develop a technology for efficiently and rapidly performing video playback.
Compared with the above manual video playback checking mode, another method for video playback with higher efficiency at present is to acquire images by a front-end network camera to form a video, and then write a mark in the video by a network video recorder for processing. When the playback is started, the user selects to play the videos with different marks at different rates, and the videos with different marks are processed by using different types of marks according to different types of videos set by the user. However, this method depends on whether the front-end network camera is collecting normally, whether the network video recorder receives the video recording of the front-end network camera, whether the network video recorder supports the network protocol of the current network camera, and so on. These factors can cause the video to be unsuccessfully played.
Based on the above, embodiments of the present invention provide a video playback method, an apparatus, an electronic device, and a storage medium, which do not use a mode of marking a video, but use an intelligent algorithm to implement that objects concerned (or interested) by a user are played at a normal rate, and objects not concerned are played at a multiple rate, so that not only the user requirements are met, but also the video playback efficiency is improved.
In a first aspect, as shown in fig. 1, the present invention provides a video playback method, including:
step S100: acquiring a video to be played back;
step S200: judging whether the video to be played back contains the interesting characteristics or not;
step S300: setting the playing speed of a first video segment containing the interesting characteristics as a first preset speed, and setting the playing speed of a second video segment not containing the interesting characteristics as a second preset speed;
step S400: and playing the video to be played back according to the set first preset speed and second preset speed.
In some embodiments, the video playback method provided by the embodiments of the present invention determines whether the video to be played back includes the feature of interest by obtaining the video to be played back, and sets the play rate of the first video segment including the feature of interest to a first preset rate; setting the playing speed of a second video segment which does not contain the interesting characteristics as a second preset speed; the video to be played back is played according to the set first preset speed and the second preset speed, so that objects concerned (or interested) by the user are played at a normal speed, and objects not concerned are played at a multiple speed, so that the user requirement is met, and the video playback efficiency is improved.
In some embodiments, the video playback method provided by the embodiments of the present invention may be applied to a network video recorder. In practical applications, for example, in security monitoring scenes, as shown in fig. 2, a front-end network camera collects images to form a monitoring video, and sends the monitoring video to a network video recorder. It can be understood that the network video recorder may also obtain the video in other manners, which is not limited in the embodiment of the present invention. The network video recorder receives the monitoring video sent by the network video camera through a UDP/TCP network protocol and stores the monitoring video in a hard disk (or other memories). The user selects playback, selects a face or a car to be focused from a face library or a garage during playback, or selects a face or a car or an object in a video during playback and drags and draws an area as an interesting feature. Meanwhile, the user needs to set a play rate of the object needing attention (second preset rate) and a play rate of the object not needing attention (first preset rate). And the network video recorder reads the data of the monitoring video and the interesting characteristics and playing speed set by the user from the hard disk and sends the data and the interesting characteristics and the playing speed to the intelligent algorithm library for identification. And the intelligent algorithm library identifies each frame of image of the monitoring video and returns the content information in each frame of image. The network video recorder judges whether the content information contains the interesting characteristics or not, namely whether the content information contains objects needing attention or not, sets the playing speed of a first video segment (containing one or more frames of images) containing the interesting characteristics as a first preset speed, and sets the playing speed of a second video segment (containing one or more frames of images) not containing the interesting characteristics as a second preset speed. And after the steps are completed, playing the video to be played back according to the set first preset speed and second preset speed.
In some embodiments, the playback rate (first predetermined rate) of the first recorded segment is set to be less than the playback rate (second predetermined rate) of the second recorded segment. For example, if the second predetermined rate is 1.0 times speed (normal speed), the first predetermined rate may be 0.5 times speed or 0.75 times speed, etc.; alternatively, the second preset rate is 2.0 times speed (multiple speed), and the first preset rate may be 1.0 times speed (normal speed), 1.25 times speed, or the like. The arrangement enables the objects concerned (or interested) by the user to be played slowly and objects not concerned to be played quickly, so that some important information or information which the user wants to pay attention to is obtained from the monitoring video more easily, and the efficiency of video playback is improved.
In some embodiments, as shown in fig. 3, if there are multiple network cameras, an exchanger is further required to be arranged between the network camera and the network video recorder, and the exchanger is configured to aggregate the code streams of the multiple network cameras to the network video recorder.
In some embodiments, as shown in fig. 3, the network video recorder may also be connected to a display for displaying the image being played back for viewing by the user.
In some embodiments, as shown in fig. 4, the step S200 of determining whether the video to be played back includes the feature of interest includes:
step S210: identifying the video to be played back to generate a feature code;
step S220: calculating the similarity between the feature codes and preset feature codes;
step S230: and judging whether the video to be played back contains the interesting features or not according to the similarity.
In some embodiments, the network video recorder identifies each frame of image of the video to be played back, and generates a corresponding feature code, wherein each frame of image corresponds to one feature code. And calculating the similarity between each feature code and a preset feature code (the feature code corresponding to the feature of interest), if the similarity is more than or equal to a specific value, judging that the feature of interest is contained, and classifying the frame image corresponding to the feature code into a first video segment. Similarly, if the similarity is lower than the specific value, it is determined that the feature of interest is not included, and the frame image corresponding to the feature code is classified as the second video segment.
In some embodiments, the method for calculating the similarity between each feature code and the preset feature code may use an euclidean distance algorithm, a manhattan distance algorithm, a minkowski distance algorithm, a cosine similarity algorithm, and the like, which is not limited in the embodiment of the present invention.
In a second aspect, the present invention provides a video playback apparatus, including:
the acquisition module is used for acquiring the video to be played back;
the judging module is used for judging whether the video to be played back contains the interesting characteristics;
the setting module is used for setting the playing speed of a first video segment containing the interesting characteristics as a first preset speed and setting the playing speed of a second video segment not containing the interesting characteristics as a second preset speed;
and the playing module is used for playing the video to be played back according to the set first preset speed and second preset speed.
In some embodiments, please refer to the related description of any embodiment of the first aspect for the working process of the video recording and playback apparatus, which is not described herein again. For example, the obtaining means is configured to perform step S100 as described in the first aspect; the judging module is used for executing the step S200 described in the first aspect; the setting module is configured to perform step S300 as described in the first aspect; the play module is configured to perform step S400 as described in the first aspect.
In some embodiments, the determining module comprises:
the identification module is used for identifying the video to be played back and generating a feature code;
the calculation module is used for calculating the similarity between the feature codes and the preset feature codes;
and the sub-judgment module is used for judging whether the interesting characteristics exist in the video to be played back according to the similarity.
In some embodiments, please refer to the description related to any embodiment of the first aspect for the working process of the determining module, which is not described herein again. For example, the identifying means is configured to perform step S210 as described in the first aspect; the calculation module is configured to perform step S220 as described in the first aspect; the sub-determination module is configured to perform step S230 as described in the first aspect.
In some embodiments, the first predetermined rate is less than the second predetermined rate. The arrangement enables the objects concerned (or interested) by the user to be played slowly and objects not concerned to be played quickly, so that some important information or information which the user wants to pay attention to is obtained from the monitoring video more easily, and the efficiency of video playback is improved.
In a third aspect, the present invention provides an electronic device, comprising:
at least one processor, and,
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores instructions executable by the at least one processor to cause the at least one processor to perform:
the video playback method according to the first aspect.
In some embodiments, the electronic device may be a mobile terminal device or a non-mobile terminal device. The mobile terminal equipment can be a mobile phone, a tablet computer, a notebook computer, a palm computer, vehicle-mounted terminal equipment, wearable equipment, a super mobile personal computer, a netbook, a personal digital assistant and the like; the non-mobile terminal equipment can be a personal computer, a television, a teller machine or a self-service machine and the like; the embodiments of the present invention are not particularly limited.
In some embodiments, the electronic device is a network video recorder. Please refer to the related description of the first aspect for the working process of the processor of the network video recorder executing the video playback method, which is not described herein again.
In a fourth aspect, the present invention provides a computer-readable storage medium having stored thereon computer-executable instructions for causing a computer to perform:
the video playback method according to the first aspect.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. Furthermore, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.
One of ordinary skill in the art will appreciate that all or some of the steps, systems, and methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Claims (10)
1. A video playback method, comprising:
acquiring a video to be played back;
judging whether the video to be played back contains interesting features or not;
setting the playing speed of a first video segment containing the interesting characteristic as a first preset speed, and setting the playing speed of a second video segment not containing the interesting characteristic as a second preset speed;
and playing the video to be played back according to the set first preset speed and the second preset speed.
2. The video playback method according to claim 1, wherein the determining whether the video to be played back has the feature of interest includes:
identifying the video to be played back to generate a feature code;
calculating the similarity between the feature code and a preset feature code;
and judging whether the video to be played back has interesting features according to the similarity.
3. The video playback method according to claim 1 or 2, wherein the first preset rate is smaller than the second preset rate.
4. The video playback method according to claim 1 or 2, wherein the video to be played back is a surveillance video.
5. The video playback method according to claim 1 or 2, wherein the feature of interest includes a human face or a car.
6. A video playback apparatus, comprising:
the acquisition module is used for acquiring the video to be played back;
the judging module is used for judging whether the video to be played back contains the interesting features;
the setting module is used for setting the playing speed of a first video segment containing the interesting characteristic as a first preset speed and setting the playing speed of a second video segment not containing the interesting characteristic as a second preset speed;
and the playing module is used for playing the video to be played back according to the set first preset speed and the second preset speed.
7. The video playback apparatus of claim 6, wherein the determining module comprises:
the identification module is used for identifying the video to be played back and generating a feature code;
the calculation module is used for calculating the similarity between the feature codes and preset feature codes;
and the sub-judgment module is used for judging whether the interesting features exist in the video to be played back according to the similarity.
8. An electronic device, comprising:
at least one processor, and,
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores instructions executable by the at least one processor to cause the at least one processor to perform:
the video playback method according to any one of claims 1 to 5.
9. The electronic device of claim 8, wherein the electronic device is a network video recorder.
10. A computer-readable storage medium having computer-executable instructions stored thereon for causing a computer to perform:
the video playback method according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011279736.9A CN112532906A (en) | 2020-11-16 | 2020-11-16 | Video playback method and device, electronic equipment and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011279736.9A CN112532906A (en) | 2020-11-16 | 2020-11-16 | Video playback method and device, electronic equipment and storage medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112532906A true CN112532906A (en) | 2021-03-19 |
Family
ID=74981401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011279736.9A Pending CN112532906A (en) | 2020-11-16 | 2020-11-16 | Video playback method and device, electronic equipment and storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112532906A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100077435A1 (en) * | 2008-09-24 | 2010-03-25 | Concert Technology | System and method for smart trick mode display |
| CN105245817A (en) * | 2014-06-19 | 2016-01-13 | 深圳中兴力维技术有限公司 | Video playback method and video playback device |
| CN109117765A (en) * | 2018-07-27 | 2019-01-01 | 长春阿德泰科电子设备有限公司 | Video investigation device and method |
| CN111327958A (en) * | 2020-02-28 | 2020-06-23 | 北京百度网讯科技有限公司 | Video playing method and device, electronic equipment and storage medium |
-
2020
- 2020-11-16 CN CN202011279736.9A patent/CN112532906A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100077435A1 (en) * | 2008-09-24 | 2010-03-25 | Concert Technology | System and method for smart trick mode display |
| CN105245817A (en) * | 2014-06-19 | 2016-01-13 | 深圳中兴力维技术有限公司 | Video playback method and video playback device |
| CN109117765A (en) * | 2018-07-27 | 2019-01-01 | 长春阿德泰科电子设备有限公司 | Video investigation device and method |
| CN111327958A (en) * | 2020-02-28 | 2020-06-23 | 北京百度网讯科技有限公司 | Video playing method and device, electronic equipment and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20180284777A1 (en) | Method, control apparatus, and system for tracking and shooting target | |
| US8671346B2 (en) | Smart video thumbnail | |
| US8014566B2 (en) | Image processing apparatus | |
| CN111698553B (en) | Video processing method and device, electronic equipment and readable storage medium | |
| US8126207B2 (en) | Subject tracking method, subject tracking device, and computer program product | |
| US8704931B2 (en) | Apparatus and method of photographing moving image | |
| US20150104149A1 (en) | Video summary apparatus and method | |
| CN108062507B (en) | Video processing method and device | |
| CN110691259B (en) | Video playing method, system, device, electronic equipment and storage medium | |
| CN109241345B (en) | Video positioning method and device based on face recognition | |
| WO2005101315A1 (en) | Providing a visual indication of the content of a video by analyzing a likely user intent | |
| CN116634106A (en) | Monitoring safety system based on enterprise campus monitoring | |
| CN101263419A (en) | Trigger tone of a camera | |
| CN111031359B (en) | Video playing method and device, electronic equipment and computer readable storage medium | |
| CN115396705A (en) | Screen projection operation verification method, platform and system | |
| JP4639043B2 (en) | Moving picture editing apparatus and moving picture editing method | |
| CN111371985A (en) | Video playing method and device, electronic equipment and storage medium | |
| US20190180112A1 (en) | Method, device, and non-transitory computer readable medium for searching video event | |
| Chen et al. | Modelling of content-aware indicators for effective determination of shot boundaries in compressed MPEG videos | |
| CN112532906A (en) | Video playback method and device, electronic equipment and storage medium | |
| CN112672102B (en) | Video generation method and device | |
| CN110430424B (en) | FOV testing method and device, storage medium and electronic equipment | |
| CN109543628B (en) | Face unlocking method, bottom library inputting method, device and electronic equipment | |
| CN111814714B (en) | Image recognition method, device, equipment and storage medium based on audio and video recording | |
| US8345124B2 (en) | Digital camera controlled by a control circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210319 |