CN114915851A - Video recording and playing method and device - Google Patents
Video recording and playing method and device Download PDFInfo
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- CN114915851A CN114915851A CN202210629352.8A CN202210629352A CN114915851A CN 114915851 A CN114915851 A CN 114915851A CN 202210629352 A CN202210629352 A CN 202210629352A CN 114915851 A CN114915851 A CN 114915851A
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- 238000000034 method Methods 0.000 title claims abstract description 105
- 230000004044 response Effects 0.000 claims abstract description 30
- 238000012545 processing Methods 0.000 claims description 15
- 238000004590 computer program Methods 0.000 claims description 7
- 230000003213 activating effect Effects 0.000 claims 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/472—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
- H04N21/47217—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content for controlling playback functions for recorded or on-demand content, e.g. using progress bars, mode or play-point indicators or bookmarks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/845—Structuring of content, e.g. decomposing content into time segments
- H04N21/8455—Structuring of content, e.g. decomposing content into time segments involving pointers to the content, e.g. pointers to the I-frames of the video stream
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Abstract
The method comprises the steps of responding to selection operation for starting a key frame recording mode, and starting the key frame recording mode; in the recording process of a key frame recording mode, if a key frame generation trigger event is detected, generating a key frame image according to a currently displayed video image, and storing the currently generated key frame image and the recording time corresponding to the key frame image; and stopping recording in response to the recording ending operation, and saving the recorded video. The searching efficiency is improved, and the user experience is further improved.
Description
Technical Field
The present application relates to the field of multimedia technologies, and in particular, to a method and an apparatus for recording and playing a video.
Background
With the development of internet technology and the popularization of terminals, more and more user terminals have a shooting function. When a user participates in a meeting or performs business training, it is desirable to record meeting or training contents so that the meeting or training contents can be viewed at any time after the meeting. Currently, a user can record all conference content or training content through a mobile phone with a shooting function. However, the existing video recording only can perform a video recording function, and cannot perform key frame marking in the recording process, so that when a user views a recorded video, the user needs to drag a progress bar to search for a key point, or needs to look at a complete video to search for the key point. If the video is long, it will take a long time, greatly reducing the user experience.
Disclosure of Invention
In view of this, the present application provides a video recording and playing method and device, so as to solve the problems that in the prior art, a key frame cannot be marked in a recording process, so that a user cannot quickly find a video key event, and user experience is low.
In a first aspect, an embodiment of the present application provides a video recording method, including:
responding to the selection operation of starting the key frame recording mode, and starting the key frame recording mode;
in the recording process of a key frame recording mode, if a key frame generation trigger event is detected, generating a key frame image according to a currently displayed video image, and storing the currently generated key frame image and the recording time corresponding to the key frame image;
and stopping recording in response to the recording ending operation, and saving the recorded video.
Preferably, in the recording process of the key frame recording mode, if a key frame generation trigger event is detected, generating a key frame image according to a currently displayed video image, and storing the currently generated key frame image and the recording time corresponding to the key frame image includes:
in the recording process of the key frame recording mode, if the touch screen operation of a user is detected in a target area, a key frame image is generated according to a currently displayed video image, and the currently generated key frame image is stored and the recording time corresponding to the key frame image is recorded.
Preferably, in the recording process of the key frame recording mode, if a key frame generation trigger event is detected, generating a key frame image according to a currently displayed video image, and storing the currently generated key frame image and the recording time corresponding to the key frame image includes:
in the recording process of the key frame recording mode, if the displayed picture is detected to be changed, a key frame image is generated according to the currently displayed video image, and the currently generated key frame image and the recording time corresponding to the key frame image are saved.
Preferably, in the recording process of the key frame recording mode, if it is detected that the displayed picture changes, generating a key frame image according to the currently displayed video image, and storing the currently generated key frame image and the recording time corresponding to the key frame image includes:
in the recording process of the key frame recording mode, periodically collecting currently displayed video images according to preset interval time;
determining whether the currently displayed video image acquired in the current period and the key frame image generated last time have picture changes;
and if the key frame image changes, generating a new key frame image according to the currently displayed video image acquired in the current period, and storing the new key frame image and the recording time corresponding to the new key frame image.
Preferably, before the key frame recording mode is started in response to the selection operation of the key frame recording mode, the method further includes:
and responding to the video recording operation, and sending an inquiry message for judging whether to start the key frame recording mode to the user.
Preferably, in the recording process of the key frame recording mode, if a key frame generation trigger event is detected, generating a key frame image according to a currently displayed video image, and storing the currently generated key frame image and the recording time corresponding to the key frame image includes:
in the recording process of the key frame recording mode, if a key frame generation trigger event is detected, generating a key frame image according to a currently displayed video image;
detecting whether a target image exists in the stored key frame images; the target image is the same image as the currently generated key frame image in the saved key frame images;
and if not, storing the currently acquired key frame image and the recording time corresponding to the key frame image.
Preferably, the method further comprises the following steps:
if yes, determining the recording time of the currently generated key frame image, and establishing a corresponding relation between the target image and the recording time of the currently generated key frame image;
deleting the currently generated key frame image, and storing the recording time of the currently generated key frame image and the corresponding relation between the target image and the recording time of the currently generated key frame image.
In a second aspect, an embodiment of the present application provides a video playing method, including:
responding to a target video selection operation recorded in a key frame recording mode, and displaying a playing mode of the target video; the playing modes comprise a target video playing mode, a key frame previewing mode and a key frame displaying mode;
and responding to the selection operation of the play mode of the target video, and playing the video by adopting the selected play mode.
Preferably, the responding to the selection operation of the play mode of the target video, the playing the video in the selected play mode includes:
and responding to the selection operation of the target video playing mode, and displaying the target video.
Preferably, the responding to the selection operation of the play mode of the target video, the playing the video in the selected play mode includes:
and responding to the selection operation of the key frame preview mode, and displaying the stored key frame images according to the recording time of the key frame images.
Preferably, the responding to the selection operation of the play mode of the target video, the playing the video in the selected play mode includes:
and responding to the selection operation of the key frame display mode, displaying the target video in the first display area, displaying the recording time of each key frame image in the second display area, and displaying each stored key frame image.
In a third aspect, an embodiment of the present application provides a video recording apparatus, including:
the starting unit is used for responding to the selection operation of starting the key frame recording mode and starting the key frame recording mode;
the processing unit is used for generating a key frame image according to a currently displayed video image and storing the currently generated key frame image and recording time corresponding to the key frame image if a key frame generation trigger event is detected in the recording process of a key frame recording mode;
and the storage unit is used for responding to the recording ending operation, stopping recording and storing the recorded video.
In a fourth aspect, an embodiment of the present application provides a video playing apparatus, including:
the display unit is used for responding to the selection operation of the target video recorded in the key frame recording mode and displaying the playing mode of the target video; the playing modes comprise a target video playing mode, a key frame previewing mode and a key frame displaying mode;
and the processing unit is used for responding to the selection operation of the play mode of the target video and adopting the selected play mode to play the video.
In a fifth aspect, an embodiment of the present application provides a video recording chip, where the video recording chip is configured to implement the method of any one of the first aspect.
In a sixth aspect, an embodiment of the present application provides a video playing chip module, where the video playing chip module includes a video playing chip and a video playing display device, and the video playing chip module is configured to implement the method according to any one of the second aspects.
In a seventh aspect, an embodiment of the present application provides an electronic device, which includes a memory for storing computer program instructions and a processor for executing the program instructions, wherein the computer program instructions, when executed by the processor, trigger the electronic device to perform the method of any one of the first aspect or the second aspect.
In an eighth aspect, embodiments of the present application provide a computer-readable storage medium, where the memory stores a computer program, and the computer program, when executed, causes the embedded device to perform the method of any one of the first aspect or the second aspect.
By adopting the scheme provided by the embodiment of the application, the key frame recording mode is started in response to the selection operation of starting the key frame recording mode, and in the recording process of the key frame recording mode, if a key frame generation trigger event is detected, a key frame image is generated according to a currently displayed video image, and the currently generated key frame image and the recording time corresponding to the key frame image are stored; and stopping recording in response to the recording ending operation, and saving the recorded video. In the video recording process, the key frame image can be generated when the key frame generating touch event occurs, and the generated key frame image and the recording time of the key frame image are stored, so that a user can play the video according to the key frame during video playing, the user can be quickly positioned to a position required to be watched according to the key frame without dragging a video progress bar to search key points or watching the whole video to search the key points, the time for searching the video key points by the user is greatly shortened, the searching efficiency is improved, and the user experience is further improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.
Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure;
fig. 2 is a schematic flowchart of a video recording method according to an embodiment of the present disclosure;
fig. 3 is a schematic flowchart of another video recording method according to an embodiment of the present application;
fig. 4 is a schematic view of a video recording scene according to an embodiment of the present application;
fig. 5 is a schematic view of another video recording scene provided in the embodiment of the present application;
fig. 6 is a schematic flowchart of a video playing method according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of a video recording apparatus according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of a video playing apparatus according to an embodiment of the present application;
fig. 9 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
For better understanding of the technical solutions of the present application, the following detailed descriptions of the embodiments of the present application are provided with reference to the accompanying drawings.
It should be understood that the embodiments described are only a few embodiments of the present application, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be understood that the term "and/or" as used herein is merely one type of associative relationship that describes an associated object, meaning that three types of relationships may exist, e.g., A and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
In the related art, when a user participates in a conference or performs business training, it is desirable to record conference contents or training contents so that the contents of the conference or the training can be viewed at any time after the conference. Currently, a user can record all conference content or training content through a mobile phone with a shooting function. However, the existing video recording only can perform a video recording function, and cannot perform key frame marking in the recording process, so that when a user views a recorded video, the user needs to drag a progress bar to search for a key point, or needs to look at a complete video to search for the key point. If the video is long, it will take a long time, greatly reducing the user experience.
In order to solve the above problems, an embodiment of the present application provides a video recording method, which starts a key frame recording mode in response to a selection operation for starting the key frame recording mode, generates a key frame image according to a currently displayed video image if a key frame generation trigger event is detected during a recording process of the key frame recording mode, and stores the currently generated key frame image and a recording time corresponding to the key frame image; and stopping recording in response to the recording ending operation, and saving the recorded video. In the video recording process, the key frame image can be generated when the key frame generating touch event occurs, and the generated key frame image and the recording time of the key frame image are stored, so that a user can play the video according to the key frame during video playing, the user can be quickly positioned to a position required to be watched according to the key frame without dragging a video progress bar to search key points or watching the whole video to search the key points, the time for searching the video key points by the user is greatly shortened, the searching efficiency is improved, and the user experience is further improved. The details will be described below.
Referring to fig. 1, a schematic view of an electronic device provided in an embodiment of the present application is shown. In fig. 1, an electronic device is exemplified by a mobile phone 100, and fig. 1 shows a front view and a rear view of the mobile phone 100, two front cameras 111 and 112 are arranged on the front side of the mobile phone 100, and four rear cameras 121, 122, 123, and 124 are arranged on the rear side of the mobile phone 100. By configuring a plurality of cameras, a plurality of shooting modes, such as a forward shooting mode, a backward shooting mode, a forward and backward double shooting mode and the like, can be provided for a user. The user can select a corresponding shooting mode to shoot according to the shooting scene so as to improve the user experience.
It is to be understood that the illustration of fig. 1 is merely an exemplary illustration and should not be taken as a limitation on the scope of the present application. For example, the number and positions of cameras may be different for different mobile phones. In addition, the electronic device according to the embodiment of the present application may be a tablet PC, a Personal Computer (PC), a Personal Digital Assistant (PDA), a smart watch, a netbook, a wearable electronic device, an Augmented Reality (AR) device, a Virtual Reality (VR) device, an in-vehicle device, a smart car, a smart audio, a robot, smart glasses, a smart television, or the like, in addition to a mobile phone.
It should be noted that, in some possible implementations, the electronic device may also be referred to as a terminal device, a User Equipment (UE), and the like, which is not limited in this embodiment of the present application.
Referring to fig. 2, a schematic flowchart of a video recording method according to an embodiment of the present application is shown. The method is applied to the electronic device shown in the figure 1. As shown in fig. 2, the method includes:
step S201, in response to a selection operation for starting the key frame recording mode, starting the key frame recording mode.
It should be noted that, in the embodiment of the present application, the video recording modes of the electronic device at least include a normal video recording mode and a key frame recording mode. The common video mode is in the prior art, and when a user starts the video mode of the electronic device to carry out video recording, the user directly encodes and stores the acquired image without carrying out other operations. The key frame recording mode in the embodiment of the present application refers to that in the process of recording, when a key frame generation trigger event is detected, for example, when a change in a recorded picture is detected, a key frame may be generated and stored. Therefore, after the recording is finished, the position required to be checked in the video can be quickly found through previewing the key frame.
In the embodiment of the application, a user acquires an image through a camera of the electronic device by starting a camera function of the electronic device. When the user needs to record the video through the electronic equipment, the video recording function of the electronic equipment can be selected. At this time, the electronic device may feed back to the user whether the key frame recording mode is activated. If the user is recording a meeting or a training activity, the key frame recording mode can be started. After the user selects the key frame recording mode, the electronic device may receive a selection operation to start the key frame recording mode, and at this time, in response to the selection operation to start the key frame recording mode, the electronic device may start the key frame recording mode to record the video.
Step S202, in the recording process of the key frame recording mode, if a key frame generation trigger event is detected, a key frame image is generated according to the currently displayed video image, and the currently generated key frame image and the recording time corresponding to the key frame image are stored.
In the embodiment of the application, in the recording process of the key frame recording mode, the electronic device needs to detect whether a key frame generation trigger event occurs in real time or periodically, if yes, it indicates that a key frame needs to be created, at this time, a key frame image needs to be generated according to a currently displayed video image, and the key frame image and the recording time corresponding to the key frame image are saved.
It should be noted that the key frame generation trigger event is preset according to the actual needs of the user, and is an event that needs to generate a key frame image. For example, during recording of a meeting or training activity, it is desirable to generate key frames when the content of the explanation changes. Or the key frame is generated when the user considers that the currently explained content is important and the generation of the key frame is triggered when the key frame is required to be generated. Of course, other events are also possible, and the application is not limited thereto.
As a possible implementation manner, in the recording process of the key frame recording mode, if a key frame generation trigger event is detected, generating a key frame image according to a currently displayed video image, and storing the currently generated key frame image and the recording time corresponding to the key frame image includes:
in the recording process of the key frame recording mode, if the touch screen operation of a user is detected in the target area, a key frame image is generated according to the currently displayed video image, and the currently generated key frame image and the recording time corresponding to the recorded key frame image are saved.
It should be noted that the target area is an area other than the control area for video recording in the display screen of the electronic device. The control area for video recording is an area which can be operated by a user on a display screen of the electronic equipment and is used for controlling video recording. The control area for video recording comprises a pause function key, a screenshot function key, a recording stop function key and the like, and the user can operate the area for controlling video recording.
In the embodiment of the application, in the recording process of the key frame recording mode, the electronic device needs to detect whether a touch screen operation of a user exists in the target area in real time. The touch screen mode of the electronic device display screen can be a voltage type, a resistance type, a pressure type and the like. The electronic device can detect different touch parameters according to different touch modes to determine whether a user performs a touch screen operation. For example, when the touch screen mode of the display screen of the electronic device is a voltage mode, the electronic device may detect whether a voltage change occurs in a target area of the display screen, and if the voltage change occurs, it may be determined that a user performs a touch screen operation in the target area of the display screen. When the touch screen mode of the display screen of the electronic device is a resistance type, the electronic device may detect whether a resistance change exists in a target area of the display screen, and if the resistance change exists, it may be determined that a user performs a touch screen operation in the target area of the display screen. When the touch screen mode of the display screen of the electronic device is a pressure type, the electronic device may detect whether there is a change in touch pressure in a target area of the display screen, and if there is a change in touch pressure, it may be determined that a user has performed a touch screen operation in the target area of the display screen. After detecting that the user performs a touch screen operation in the target area of the display screen, it indicates that the user needs to mark the video image recorded therein, and at this time, the electronic device may use the image of the currently displayed video frame as a key frame to generate a key frame image, and store the currently generated key frame image and the recording time corresponding to the key frame image. Namely the recording time corresponding to the generated current key frame image in the current recorded video.
As a possible implementation manner, in order to save the storage space, the electronic device may save the thumbnail of the key frame image when saving the key frame image.
It should be noted that the touch screen mode of the display screen of the electronic device may also be in other manners, which is not limited in this application.
The implementation manner is that the user triggers the generation of the key frame to trigger the occurrence of the event. In the recording process, as the generation trigger event of the key frame may not be triggered to occur in a place where the user thinks key each time in time by other operations of the user, the key position mark in the video is incomplete, the recorded content detection may be performed periodically by the electronic device, and when the recorded content changes, the generation trigger event of the key frame may be regarded to occur, as follows.
As a possible implementation manner, in the recording process of the key frame recording mode, if a key frame generation trigger event is detected, generating a key frame image according to a currently displayed video image, and storing the currently generated key frame image and the recording time corresponding to the key frame image includes:
in the recording process of the key frame recording mode, if the displayed picture is detected to be changed, a key frame image is generated according to the currently displayed video image, and the currently generated key frame image and the recording time corresponding to the key frame image are saved.
In the embodiment of the application, in the recording process of the key frame recording mode, the electronic device may detect whether the displayed video image is changed in real time or periodically. In the embodiment of the present application, an example will be described in which an electronic device periodically detects whether or not a displayed video screen has changed. At this time, the electronic device may acquire the time period in advance, and the time period may be preset by the user or may be a default time period stored in the electronic device in advance. After acquiring the time period, the electronic device may periodically detect whether a displayed video image changes according to the time period. When detecting that the picture of the video image changes, the electronic device can determine that a key frame generation trigger event occurs, and at the moment, the electronic device can generate a key frame image by taking the currently displayed image of the video frame as a key frame and store the currently generated key frame image and the recording time corresponding to the key frame image. Namely the recording time corresponding to the generated current key frame image in the current recorded video.
It should be noted that the electronic device may detect whether the displayed video image changes in real time, may also detect whether the displayed video image changes periodically, and may perform setting according to the actual needs of the user. When periodically detecting whether the displayed video image changes, the user can set the detection period according to the actual requirement. For example, the user may set N minutes as a period, and at this time, the electronic device may perform detection of whether a change occurs in a displayed video picture every N minutes. Wherein N is a positive number greater than 0.
As a possible implementation manner, in the recording process of the key frame recording mode, if it is detected that a displayed picture changes, generating a key frame image according to a currently displayed video image, and storing the currently generated key frame image and a recording time corresponding to the key frame image includes:
in the recording process of the key frame recording mode, periodically collecting currently displayed video images according to preset interval time; determining whether the currently displayed video image acquired in the current period and the key frame image generated last time have picture changes; and if the key frame image changes, generating a new key frame image according to the currently displayed video image acquired in the current period, and storing the new key frame image and the recording time corresponding to the new key frame image.
That is, in the embodiment of the present application, in the recording process of the key frame recording mode, the electronic device needs to periodically detect whether the picture of the displayed video image changes. At this time, the electronic device may periodically collect the displayed video images according to a preset time interval, that is, a time period. In the current period, the electronic equipment compares the acquired currently displayed video image with the key frame image generated last time, and whether picture change actually occurs or not is judged. For example, the electronic device may calculate a difference between gray values of pixels at corresponding positions between a currently displayed video image acquired in a current period and a last generated key frame image, and determine that a picture of the currently displayed video image acquired in the current period and the last generated key frame image is changed if the difference between gray values of pixels exceeding a first number is greater than a preset gray threshold. If the difference between the gray values of the pixels at the corresponding positions between the currently displayed video image and the last generated key frame image does not exceed the difference between the gray values of the pixels with the first number, which is greater than the preset gray threshold value, it can be determined that the picture of the currently displayed video image acquired in the current period and the last generated key frame image is not changed.
It should be noted that the first number is an integer greater than or equal to 0 and is set according to actual requirements. The preset grayscale threshold is also preset according to actual requirements, and may be 0.05, or may be other values, which is not limited in this application.
As a possible implementation manner, when the electronic device detects a difference between gray-scale values of pixels at corresponding positions between a currently displayed video image acquired in a current period and a last generated key frame image, in order to reduce a calculation amount, only the difference between gray-scale values of pixels in a specific region may be compared, and the specific region may be preset by a user according to actual requirements. When the number of the gray difference values between the two pixels in the preset specific area is larger than the preset gray threshold value and exceeds a first number, the change of the picture of the currently displayed video image acquired in the current period and the picture of the key frame image generated last time can be determined.
When the electronic equipment determines that the picture of the currently displayed video image acquired in the current period and the picture of the key frame image generated last time are changed, a key frame needs to be created, at the moment, the currently displayed video image acquired in the current period is used as the key frame, the video image of the frame is copied to be used as the key frame image of the current period, so that a new key frame image can be generated, the recording time corresponding to the newly generated key frame image is determined, and the newly generated key frame image and the corresponding recording time are stored.
As a possible implementation manner, since a user performs a touch screen operation in a target area in an electronic device to generate a key frame image, and the key frame image is automatically generated when the electronic device periodically detects that a currently acquired video image and a key frame image stored last time have a picture change, there is a case that two key frame images are the same, and in order to reduce the occupation of storage capacity, deduplication detection may be performed, that is, only one key frame image is stored.
At this time, in the recording process of the key frame recording mode, if it is detected that the recorded picture changes, generating a key frame image according to the currently displayed video image, and storing the currently generated key frame image and the recording time corresponding to the key frame image includes:
in the recording process of the key frame recording mode, if the displayed image is detected to be changed, generating a key frame image according to the currently displayed video image; detecting whether a target image exists in the stored key frame images or not; and if not, storing the currently acquired key frame image and the recording time corresponding to the key frame image. Wherein the target image is the same image as the currently generated key frame image among the saved key frame images.
If yes, determining the recording time of the currently generated key frame image, and establishing a corresponding relation between the target image and the recording time of the currently generated key frame image; deleting the currently generated key frame image, and storing the recording time of the currently generated key frame image and the corresponding relation between the target image and the recording time of the currently generated key frame image.
In the embodiment of the application, in the recording process of the key frame recording mode, if the electronic device detects a key frame generation trigger event, a key frame image is generated according to a currently displayed video image. After the key frame images are generated, since the generated key frame images may be the same as the key frame images already stored, in order to avoid repeated storage, it is possible to detect whether or not the key frame images identical to the key frame images newly generated exist in the key frame images already stored from the generated key frame images. At this time, the electronic device may calculate, for each of the saved key frame images, a difference between gray values of pixels at corresponding positions between the key frame image and the currently generated key frame image, and if the difference between gray values of pixels exceeding the first number of pixels is greater than a preset gray threshold, it may be determined that the frame key image is different from the currently generated key frame image. If the difference between the gray values of the pixels not exceeding the first number is greater than a preset gray threshold, it may be determined that the frame key image is the same as the currently generated key frame image. The electronic equipment can determine whether the target image identical to the currently generated key frame image exists in the stored key frame images or not through the method. If the target image does not exist in the stored key frame images, the currently generated key frame images and the recording time corresponding to the key frame images can be stored.
If the target image exists in the stored key frame image, it is indicated that the stored key frame image has the same value as the currently generated key frame image, and in order to avoid repeated storage of the same image, only the recording time of the currently generated key frame image may be stored, and a corresponding relationship between the target image and the recording time of the currently generated key frame image may be established. Deleting the currently generated key frame image, and only storing the recording time of the currently generated key frame image and the corresponding relation between the target image and the recording time of the currently generated key frame image. Therefore, when the key frame image is played, the target image can be found at the recording time of the currently generated key frame image according to the corresponding relation between the target image and the recording time of the currently generated key frame image, and the target image is played.
And step S203, responding to the recording ending operation, stopping recording, and saving the recorded video.
In the embodiment of the application, when recording needs to be stopped, a user can send a recording ending operation to the electronic device, and at this time, the electronic device stops recording the video after receiving the recording ending operation and stores the currently recorded video.
Referring to fig. 3, a schematic view of a flow of another video recording method provided in the embodiment of the present application is shown. The method is applied to the electronic device shown in fig. 1. Compared with the video recording method described in the above fig. 2, the method described in the embodiment of the present application adds an inquiry message for feeding back to the user whether to start the key frame recording module. The method comprises the following specific steps:
step S301, responding to the video recording operation, sending an inquiry message for judging whether to start the key frame recording mode to the user.
In the embodiment of the application, when a user needs to record a video through the electronic equipment, the video recording function is started, and at the moment, the user sends a video recording operation to the electronic equipment. Because the video recording mode comprises a key frame recording mode and a common mode, when the user starts the video recording function, the user can be inquired whether to start the key frame recording mode. At this time, the electronic device transmits an inquiry message whether to start the key frame recording mode to the user in response to the video recording operation.
Step S302, responding to the selection operation of starting the key frame recording mode, and starting the key frame recording mode.
Specifically, refer to step S201, which is not described herein again.
Step S303, in the recording process of the key frame recording mode, if a key frame generation trigger event is detected, generating a key frame image according to the currently displayed video image, and storing the currently generated key frame image and the recording time corresponding to the key frame image.
Specifically, refer to step S202, which is not described herein again.
And step S304, responding to the recording ending operation, stopping recording, and saving the recorded video.
Specifically, refer to step S203, which is not described herein again.
An electronic device is taken as a mobile phone for example. When a user participates in a conference, video recording is needed. At this time, as shown in fig. 4, after the user turns on the mobile phone, the mobile phone display interface displays the mobile phone home screen interface (refer to (1) in fig. 4). In response to the user operating the icon 401 of the "camera" application in the cell phone home screen interface, the cell phone displays the interface 402 shown in (2) of fig. 4. The interface 402 includes a "portrait mode", a "video recording mode", and a "professional mode". In response to the user's operation of selecting the video recording mode 403, the mobile phone displays an interface 404 shown in (3) in fig. 4. Interface 404 is a preview interface before cell phone recording. A confirmation control of whether to initiate the key frame recording mode is displayed in the interface 404. In response to the user operating the yes control 405, the cell phone displays an interface 406 shown in (4) in fig. 4. Interface 406 is a preview interface before recording in the key frame recording mode. The interface 406 displays a "gallery", "open recording control", and "front-back lens switching control". In response to the user operating the start recording control 407, the mobile phone displays an interface 501 shown in (1) in fig. 5. The interface 501 is a preview interface of a video recorded by a mobile phone. The interface 501 includes a functional area 502 and a target area 503. In the functional area 502 are "pause control", "stop control", "take picture control". The target area 503 is an area of the interface 501 other than the functional area 502. At this time, the mobile phone needs to detect whether the user performs a touch screen operation on the target area 503 in real time, and the mobile phone needs to periodically capture the video image displayed in the interface 501. As shown in the interface 504 of (2) in fig. 5, in the interface 504, the user performs a touch screen operation in the target area 503. At this time, the mobile phone may detect that the user performs a touch screen operation in the target area 503 through a voltage change at the touch screen position of the target area 503. At this time, the mobile phone needs to use the currently displayed video image of the interface 504 as a key frame image, generate the key frame image, and record the 15 th second of the recording time corresponding to the key frame image. The mobile phone can detect whether the stored key frame images have the same target images as the currently newly generated key frame images. And if no target image exists, storing the newly generated key frame image and the recording time corresponding to the newly generated key frame image for 15 seconds. If the target image exists, the corresponding relation between the 15 th second of the recording time corresponding to the newly generated key frame image and the target image needs to be established, and the corresponding relation between the 15 th second of the recording time corresponding to the newly generated key frame image and the target image and the 15 th second of the recording time corresponding to the newly generated key frame image are stored. When the mobile phone detects whether the user performs a touch screen operation in the target area 503 in real time, the mobile phone also needs to periodically acquire the video images displayed in the interface 501, and compares the video images acquired in the current period with the key images stored last time to determine whether the video images are the same. If the current display content is the same as the current display content, the current display content of the mobile phone is not changed, and the key frame image is not created in the current period. If the current display content of the mobile phone is different from the current display content of the mobile phone, the current display content of the mobile phone is changed, for example, in an interface 505 shown in (3) in fig. 5, at this time, the mobile phone needs to generate a key frame image according to the video image acquired in the current period, record the recording time when the video image is acquired in the current period, and store the key frame image generated in the current period and the recording time corresponding to the key frame image. As shown in (3) of fig. 5, in response to the user operating the stop control 506, the mobile phone stops video recording, saves the recorded video, and displays an interface 507 as shown in (4) of fig. 5.
Fig. 6 is a schematic flowchart of a video playing method according to an embodiment of the present application. The method is applied to the electronic device shown in figure 1. The method comprises the following steps:
step S601, responding to a target video selection operation recorded in the key frame recording mode, and displaying a play mode of the target video.
The playing modes comprise a target video playing mode, a key frame preview mode and a key frame display mode.
In the embodiment of the application, after the user records the video, when the user needs to watch the video through the electronic equipment, at the moment, the user checks the recorded video on the electronic equipment. The electronic device may display the saved recorded video. As a possible implementation manner, the electronic device may classify the videos recorded in the normal mode and the videos recorded in the key frame recording mode. When a user needs to watch a video in the key frame recording mode, the electronic device can send an operation of opening the video recorded in the key frame recording mode to the electronic device, and the electronic device responds to the operation of opening the video recorded in the key frame recording mode and sends a video list recorded in the key frame recording mode to the user. At this time, the user may select a target video from the video list recorded in the key frame recording mode, and send a selection operation of the target video to the electronic device. And responding to the selection operation of the target video, and displaying the play mode of the target video.
It should be noted that when the target video recorded in the key frame recording mode is recorded, a plurality of key frame images are also generated. Therefore, when the user selects the target video recorded in the key frame recording mode to play, three playing modes can be provided: a target video play mode, a key frame preview mode, and a key frame display mode. The target video playing mode is a playing mode for playing only the target video. The key frame preview mode is a play mode in which only key frame images are played. The key frame display mode is a play mode in which a key frame image is also displayed while a target video is played.
After receiving a target video selection operation of a user, the electronic device may feed back a play mode of the target video to the user, so that the user can select which play mode to play the target video or the key frame image.
Step S602, responding to the selection operation of the play mode of the target video, and playing the video in the selected play mode.
In the embodiment of the application, after the electronic device feeds back the play mode of the target video to the user, the user can select the play mode of the target video according to actual requirements. And responding to the selection operation of the play mode of the target video, and the electronic equipment adopts the selected play mode of the target video to play the video.
As a possible implementation manner, in response to a selection operation of a play mode of a target video, performing video play in the selected play mode includes: and responding to the selection operation of the target video playing mode, and displaying the target video.
That is, when the user selects the play mode of the target video, if the play mode of the target video is selected, the electronic device plays the target video in response to the selection operation of the play mode of the target video, and at this time, only the target video is displayed in the display interface of the electronic device, and the key frame image is not displayed.
As a possible implementation manner, in response to a selection operation of a play mode of a target video, performing video play in the selected play mode includes: and responding to the selection operation of the key frame preview mode, and displaying the stored key frame images according to the recording time of the key frame images.
That is, when the user selects the play mode of the target video, if the key frame preview mode is selected, the electronic device responds to the selection operation of the play mode of the target video, and plays the key frame image of the target video according to the recording time, and at this time, only the key frame image of the target video is displayed in the display interface of the electronic device. Through the key frame preview mode, a user can obtain the main recording content of the target video through previewing the key frame image, so that the required playing position can be found in the target video according to the playing time corresponding to the key frame image.
As a possible implementation manner, in response to a selection operation of a play mode of a target video, performing video play in the selected play mode includes: and responding to the selection operation of the key frame display mode, displaying the target video in the first display area, displaying the recording time of each key frame image in the second display area, and displaying each stored key frame image.
That is, when the user selects the play mode of the target video, if the key frame display mode is selected, the electronic device displays both the target video and the key frame image in response to the selection operation of the target video play mode. And when displaying the key frame images, displaying according to the recording time of each key frame image. At this time, the display interface of the electronic device may be divided into two display areas, a first display area and a second display area. And displaying the target video in the first display area, and displaying each key frame in the second display area according to the display time of each key frame image. Therefore, the user can find the required playing position in the target video through the displayed key frame image.
As a possible implementation manner, after displaying the play mode of the target video, if the electronic device receives a selection operation of the play mode of the target video selected by the user within a preset time threshold, the electronic device plays the target video according to the play mode of the target video selected by the user. And if the selection operation of the playing mode of the target video selected by the user is not received within the preset time threshold, playing the target video according to a preset default mode. As a possible implementation manner, the preset default play mode may be a key frame display mode.
It should be noted that, when the key frame images are sequentially displayed according to the recording time of the key frame images, the electronic device needs to first acquire each key frame image and the corresponding recording time. At this time, if the electronic device directly stores a key frame image and the recording time corresponding to the key frame image when storing the key frame image, the electronic device may directly obtain the stored key frame image and the recording time corresponding to the key frame image, and display the key frame image according to the recording time of the key frame image. If the electronic device only records the recording time of the stored key frame image and the corresponding relationship between the recording time of the key frame image and the target key frame image when the electronic device stores the key frame image, it indicates that the key frame image is the same as the target image, and at this time, the electronic device can find the target image according to the corresponding relationship between the recording time of the key frame image and the target key frame image, and display the target key frame image at the recording time of the key frame image.
Therefore, by recording the video in the key frame recording mode, the electronic equipment can display the key frame image while displaying the target video when playing the video. The user can watch the key frame image to know the time position of each important mark point in the target video, so that the video position required to be checked can be quickly positioned, the target video is adjusted to the corresponding position to be played, the express positioning of the user on the video is guaranteed, the searching efficiency is improved, and the user experience is improved.
Fig. 7 is a schematic structural diagram of a video recording apparatus according to an embodiment of the present application. Referring to fig. 7, the video recording apparatus includes:
the starting unit 701 is configured to start the key frame recording mode in response to a selection operation for starting the key frame recording mode.
The processing unit 702 is configured to, during the recording process of the key frame recording mode, generate a key frame image according to the currently displayed video image if a key frame generation trigger event is detected, and store the currently generated key frame image and the recording time corresponding to the key frame image.
As a possible implementation manner, the processing unit 702 is specifically configured to, in the recording process of the key frame recording mode, generate a key frame image according to a currently displayed video image if a touch screen operation of a user is detected in a target area, and store the currently generated key frame image and record recording time corresponding to the key frame image.
As a possible implementation manner, the processing unit 702 is specifically configured to, in the recording process of the key frame recording mode, if it is detected that a displayed picture changes, generate a key frame image according to a currently displayed video image, and store the currently generated key frame image and a recording time corresponding to the key frame image.
As a possible implementation manner, the processing unit 702 is specifically configured to periodically acquire a currently displayed video image according to a preset interval time in a recording process of the key frame recording mode; determining whether the currently displayed video image acquired in the current period and the key frame image generated last time have picture changes; and if the key frame image changes, generating a new key frame image according to the currently displayed video image acquired in the current period, and storing the new key frame image and the recording time corresponding to the new key frame image.
As a possible implementation manner, the processing unit 702 is specifically configured to, in the recording process of the key frame recording mode, if a key frame generation trigger event is detected, generate a key frame image according to a currently displayed video image; detecting whether a target image exists in the stored key frame images; the target image is the same image as the currently generated key frame image in the saved key frame images; and if not, storing the currently acquired key frame image and the recording time corresponding to the key frame image.
If yes, determining the recording time of the currently generated key frame image, and establishing a corresponding relation between the target image and the recording time of the currently generated key frame image; deleting the currently generated key frame image, and storing the recording time of the currently generated key frame image and the corresponding relation between the target image and the recording time of the currently generated key frame image.
A saving unit 703 is configured to stop recording in response to the recording end operation, and save the recorded video.
As a possible implementation manner, the processing unit 702 is further configured to send, in response to the video recording operation, an inquiry message to a user whether to start the key frame recording mode.
It should be noted that, the video recording apparatus may be implemented by a chip or a chip module, and may also be implemented by an electronic device, which is not limited in this application.
Fig. 8 is a schematic structural diagram of a video playing apparatus according to an embodiment of the present application. Referring to fig. 8, the video playback apparatus includes:
the display unit 801 is configured to display a play mode of a target video in response to a target video selection operation recorded in the key frame recording mode.
The playing modes comprise a target video playing mode, a key frame preview mode and a key frame display mode.
The processing unit 802 is configured to perform video playing in the selected play mode in response to a selection operation of the play mode of the target video.
As a possible implementation manner, the processing unit 802 is specifically configured to display the target video in response to a selection operation of the target video playing mode.
As a possible implementation manner, the processing unit 802 is specifically configured to respond to a selection operation of the key frame preview mode, and display each stored key frame image according to the recording time of each key frame image.
As a possible implementation manner, the processing unit 802 is specifically configured to, in response to a selection operation of the key frame display mode, display the target video in the first display area and display each of the stored key frame images in the second display area according to the recording time of each of the key frame images.
It should be noted that the above video playing apparatus may be implemented by a chip module, where the chip module includes a display device, and may also be implemented by an electronic device, and the application does not limit this.
Corresponding to the above embodiments, the embodiments of the present application further provide a video recording chip, where the video recording chip is used to implement the embodiments of the video recording method.
Corresponding to the above embodiment, the embodiment of the present application further provides a video playing chip module, where the video playing chip module includes a video playing chip and a video playing display device, and the video playing chip module is used to implement the embodiment of the video playing method.
Corresponding to the embodiment, the application further provides the electronic equipment. Fig. 9 is a schematic structural diagram of an electronic device according to an embodiment of the present invention, where the electronic device 900 may include: a processor 901, a memory 902, and a communication unit 903. The components communicate over one or more buses, and those skilled in the art will appreciate that the configuration of the servers shown in the figures are not meant to limit embodiments of the present invention, and may be in the form of buses, stars, more or fewer components than those shown, some components in combination, or a different arrangement of components.
The communication unit 903 is configured to establish a communication channel, so that the storage device can communicate with other devices. Receiving the user data sent by other devices or sending the user data to other devices.
The processor 901, which is a control center of the storage device, connects various parts of the entire electronic device using various interfaces and lines, and performs various functions of the electronic device and/or processes data by operating or executing software programs and/or modules stored in the memory 902 and calling data stored in the memory. The processor may be composed of Integrated Circuits (ICs), for example, a single packaged IC, or a plurality of packaged ICs connected to the same or different functions. For example, the processor 901 may include only a Central Processing Unit (CPU). In the embodiment of the present invention, the CPU may be a single operation core, or may include multiple operation cores.
The memory 902 is used for storing instructions executed by the processor 901, and the memory 902 may be implemented by any type of volatile or non-volatile storage device or combination thereof, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.
The execution of the instructions in memory 902, when executed by processor 901, enables electronic device 900 to perform some or all of the steps in the embodiments shown in fig. 3 or fig. 6.
In a specific implementation, the present invention further provides a computer storage medium, where the computer storage medium may store a program, and the program may include some or all of the steps in each embodiment of the video recording method or the video playing method provided by the present invention when executed. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), a Random Access Memory (RAM), or the like.
Those skilled in the art will readily appreciate that the techniques of the embodiments of the present invention may be implemented using software plus any required general purpose hardware platform. Based on such understanding, the technical solutions in the embodiments of the present invention may be essentially or partially implemented in the form of a software product, which may be stored in a storage medium, such as ROM/RAM, magnetic disk, optical disk, etc., and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method according to the embodiments or some parts of the embodiments.
The same and similar parts in the various embodiments in this specification may be referred to each other. In particular, as for the apparatus embodiment and the terminal embodiment, since they are substantially similar to the method embodiment, the description is relatively simple, and reference may be made to the description in the method embodiment for relevant points.
Claims (17)
1. A method for video recording, comprising:
responding to the selection operation of starting the key frame recording mode, and starting the key frame recording mode;
in the recording process of a key frame recording mode, if a key frame generation trigger event is detected, generating a key frame image according to a currently displayed video image, and storing the currently generated key frame image and the recording time corresponding to the key frame image;
and stopping recording in response to the recording ending operation, and saving the recorded video.
2. The method according to claim 1, wherein in the recording process of the key frame recording mode, if a key frame generation trigger event is detected, generating a key frame image according to a currently displayed video image, and storing the currently generated key frame image and the recording time corresponding to the key frame image comprises:
in the recording process of the key frame recording mode, if the touch screen operation of a user is detected in a target area, a key frame image is generated according to a currently displayed video image, and the currently generated key frame image is stored and the recording time corresponding to the key frame image is recorded.
3. The method according to claim 1, wherein in the recording process of the key frame recording mode, if a key frame generation trigger event is detected, generating a key frame image according to a currently displayed video image, and storing the currently generated key frame image and the recording time corresponding to the key frame image comprises:
in the recording process of the key frame recording mode, if the displayed picture is detected to be changed, a key frame image is generated according to the currently displayed video image, and the currently generated key frame image and the recording time corresponding to the key frame image are saved.
4. The method according to claim 3, wherein, in the recording process of the key frame recording mode, if it is detected that the displayed picture changes, generating a key frame image according to the currently displayed video image, and storing the currently generated key frame image and the recording time corresponding to the key frame image comprises:
in the recording process of the key frame recording mode, periodically collecting currently displayed video images according to preset interval time;
determining whether the currently displayed video image acquired in the current period and the key frame image generated last time have picture changes;
and if the key frame image changes, generating a new key frame image according to the currently displayed video image acquired in the current period, and storing the new key frame image and the recording time corresponding to the new key frame image.
5. The method according to claim 1, wherein before said activating a key frame recording mode in response to a key frame recording mode selecting operation, further comprising:
and responding to the video recording operation, and sending an inquiry message for judging whether to start the key frame recording mode to the user.
6. The method according to any one of claims 1 to 5, wherein, in the recording process of the key frame recording mode, if a key frame generation trigger event is detected, generating a key frame image according to a currently displayed video image, and storing the currently generated key frame image and the recording time corresponding to the key frame image comprises:
in the recording process of the key frame recording mode, if a key frame generation trigger event is detected, generating a key frame image according to a currently displayed video image;
detecting whether a target image exists in the stored key frame images; the target image is the same image as the currently generated key frame image in the saved key frame images;
and if not, storing the currently acquired key frame image and the recording time corresponding to the key frame image.
7. The method of claim 6, further comprising:
if yes, determining the recording time of the currently generated key frame image, and establishing a corresponding relation between the target image and the recording time of the currently generated key frame image;
deleting the currently generated key frame image, and storing the recording time of the currently generated key frame image and the corresponding relation between the target image and the recording time of the currently generated key frame image.
8. A video playback method, comprising:
responding to a target video selection operation recorded in a key frame recording mode, and displaying a playing mode of the target video; the playing modes comprise a target video playing mode, a key frame previewing mode and a key frame displaying mode;
and responding to the selection operation of the play mode of the target video, and playing the video by adopting the selected play mode.
9. The method according to claim 8, wherein the responding to the operation of selecting the play mode of the target video, and the video playing in the selected play mode comprises:
and responding to the selection operation of the target video playing mode, and displaying the target video.
10. The method according to claim 8, wherein the performing video playing in the selected playing mode in response to the operation of selecting the playing mode of the target video comprises:
and responding to the selection operation of the key frame preview mode, and displaying the stored key frame images according to the recording time of the key frame images.
11. The method according to claim 8, wherein the responding to the operation of selecting the play mode of the target video, and the video playing in the selected play mode comprises:
and responding to the selection operation of the key frame display mode, displaying the target video in the first display area, displaying the recording time of each key frame image in the second display area, and displaying each stored key frame image.
12. A video recording apparatus, comprising:
the starting unit is used for responding to the selection operation of starting the key frame recording mode and starting the key frame recording mode;
the processing unit is used for generating a key frame image according to a currently displayed video image and storing the currently generated key frame image and recording time corresponding to the key frame image if a key frame generation trigger event is detected in the recording process of a key frame recording mode;
and the storage unit is used for responding to the recording ending operation, stopping recording and storing the recorded video.
13. A video playback apparatus, comprising:
the display unit is used for responding to the selection operation of the target video recorded in the key frame recording mode and displaying the playing mode of the target video; the playing modes comprise a target video playing mode, a key frame previewing mode and a key frame displaying mode;
and the processing unit is used for responding to the selection operation of the play mode of the target video and adopting the selected play mode to play the video.
14. A video recording chip, wherein the video recording chip is configured to implement the video recording method according to any one of claims 1 to 7.
15. A video playing chip module is characterized in that the video playing chip module comprises a video playing chip and a video playing display device; the video playing chip module is used for realizing the video playing method of any one of claims 8 to 11.
16. An electronic device, comprising a memory for storing computer program instructions and a processor for executing the program instructions, wherein the computer program instructions, when executed by the processor, trigger the electronic device to perform the method of any of claims 1 to 7 or the method steps of any of claims 8 to 11.
17. A computer-readable storage medium, having stored thereon a computer program which, when run on a computer, causes the computer to perform the method of any of claims 1-7 or the method of any of claims 8-11.
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