WO2019227324A1

WO2019227324A1 - Method and device for controlling video playback speed and motion camera

Info

Publication number: WO2019227324A1
Application number: PCT/CN2018/088968
Authority: WO
Inventors: 马骏
Original assignee: 深圳市大疆创新科技有限公司
Priority date: 2018-05-30
Filing date: 2018-05-30
Publication date: 2019-12-05
Also published as: CN110771175A

Abstract

A method and a device for controlling video playback speed and a motion camera, wherein the method comprises the following steps: acquiring characteristic information of a video to be played; adjusting the original playback speed of a corresponding video clip in the video to be played according to the characteristic information; outputting the adjusted video to be played; wherein, each frame in the adjusted corresponding video clip corresponds to at least two time stamps, including the time stamp corresponding to the original playback speed and the time stamp corresponding to the adjusted original playback speed. The method and the device for controlling video playback speed and the motion camera provided by the present embodiment realize the diversity of video playback modes.

Description

Video playback speed control method, device and motion camera

Technical field

The present application relates to the technical field of video playback, and in particular, to a method, a device, and a motion camera for controlling a video playback speed.

Background technique

At present, the playback speed of a video is generally unchanged. Even if some players have fast or slow playback capabilities, users need to manually select the playback speed. Once the playback speed is selected, the player Subsequent videos will continue to play at that speed.

Therefore, using the existing video playback method, the video playback method is single.

Application content

The present application provides a method, a device, and a motion camera for controlling a video playback speed, so as to implement diversity of video playback modes.

In a first aspect, an embodiment of the present application provides a method for controlling a video playback speed. The method may include:

Obtain the characteristic information of the video to be played;

Adjusting the original playback speed of the corresponding video clip in the video to be played according to the characteristic information;

Output adjusted to-be-played video;

Each frame in the adjusted corresponding video segment corresponds to at least two timestamps, and the at least two timestamps include a timestamp corresponding to the original playback speed and a timestamp corresponding to the adjusted original playback speed.

In a second aspect, an embodiment of the present application further provides a video playback speed control device. The video playback speed control device may include a processor and a memory;

Among them, the memory is used to store program instructions;

A processor, which is used to call and execute program instructions stored in the memory to execute and obtain characteristic information of the video to be played; and adjust the original playback speed of the corresponding video clip in the video to be played according to the characteristic information; and output the adjusted video to be played;

According to a third aspect, an embodiment of the present application further provides a sports camera. The sports camera may include the video playback speed control device shown in the second aspect.

According to a fourth aspect, an embodiment of the present application provides a computer-readable storage medium. A computer program is stored on the computer-readable storage medium. When the computer program is executed by a processor, the method for controlling a video playback speed shown in the first aspect is executed. .

The method, device and motion camera for controlling video playback speed provided by the embodiments of the present application obtain the characteristic information of the video to be played by adjusting the original playback speed of the corresponding video segment in the video to be played according to the characteristic information; and then output the adjusted Video to be played; wherein each frame in the adjusted corresponding video segment corresponds to at least two timestamps, and the at least two timestamps include a timestamp corresponding to the original playback speed and a timestamp corresponding to the adjusted original playback speed. It can be seen that the method, device and motion camera for controlling the video playback speed provided by this application, before outputting the adjusted to-be-played video, adjust the original playback speed of the corresponding video segment in the to-be-played video according to the characteristic information to make the adjustment. Each frame in the corresponding corresponding video segment corresponds to at least two timestamps. In this way, when the adjusted to-be-played video is output, it can be played according to any one of the at least two timestamps, thereby achieving a variety of video playback methods. Sex.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to explain the technical solutions in the embodiments of the present application more clearly, the drawings used in the description of the embodiments are briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without paying creative labor.

FIG. 1 is a schematic diagram of a video playback speed control method according to an embodiment of the present application; FIG.

2 is a schematic diagram of another method for controlling a video playback speed according to an embodiment of the present application;

3 is a schematic diagram of still another method for controlling a video playback speed according to an embodiment of the present application;

FIG. 4 is a schematic structural diagram of a video playback speed control device according to an embodiment of the present application.

Detailed ways

In order to make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments These are part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in this application, all other embodiments obtained by a person of ordinary skill in the art without creative labor shall fall within the protection scope of this application. In the case of no conflict, the following embodiments and implementations The features in the mode can be combined with each other.

The method for controlling the video playback speed provided in the embodiments of the present application may be applied to a video playback device or a video playback device with a video recording function. For example, the video playback device may be an action camera, a mobile terminal (such as a mobile phone), or a smart wearable device. , TV or VCR with playback function, etc. Of course, it can also be other video playback devices. In the embodiment of the present application, in order to realize the diversity of video playback modes, before performing video playback, the characteristic information of the video to be played may be obtained first, and the original playback speed of the corresponding video segment in the video to be played is adjusted according to the characteristic information; , And then output the adjusted to-be-played video; wherein each frame in the adjusted corresponding video segment corresponds to at least two timestamps, and the at least two timestamps include the timestamp corresponding to the original playback speed and the adjusted original playback speed Corresponding timestamp. It can be seen that the method for controlling the video playback speed provided in this application adjusts the original playback speed of the corresponding video clip in the video to be played according to the characteristic information before outputting the adjusted video to be played, so that the adjusted corresponding video clip is Each frame in corresponds to at least two timestamps. In this way, when the adjusted to-be-played video is output, it can be played according to any one of the at least two timestamps, thereby realizing the diversity of video playback modes.

In this embodiment, the following content will be described by taking a video playback device as a motion camera as an example. The sports camera has functions such as taking pictures, recording videos, and playing. It can be used to record sports-related videos, and can also be used for video recording during sports. Generally speaking, compared with ordinary cameras, sports cameras are smaller in size for easy carrying, and at the same time, they can be better applied to harsh environments to meet the shooting in different sports scenes. For example, they are more waterproof and can be used in surfing. Video recording. Further, the action camera can be carried on a carrier for shooting, such as being mounted on a bicycle, or can be worn on a user, such as a head, such as a hand, and can also be handheld for shooting. Furthermore, other devices can be mounted on the action camera to enrich the functions and requirements of the action camera.

FIG. 1 is a schematic diagram of a video playback speed control method according to an embodiment of the present application. The video playback speed control method may be executed by a video playback speed control device. The video playback speed control device may be independently set or Integrated in the processor. Please refer to FIG. 1, the method for controlling the video playback speed may include:

S101. Acquire feature information of a video to be played.

Before acquiring the characteristic information of the video to be played, the video to be played may be acquired first. When acquiring the to-be-played video, the to-be-played video may be obtained from a video recorded and stored locally by the action camera. Of course, the to-be-played video may also be obtained by downloading through a motion camera. When the to-be-played video is obtained locally from the action camera, for example, the to-be-played video can be captured by the user holding the action camera; it can also be obtained by mounting the action camera on a carrier; or by using the action camera It can be taken by wearing on the wrist or on the head; of course, other methods can also be used. Here, the embodiments of the present application are only described by using these methods as examples, but it does not mean that the embodiments of the present application are limited to this.

The feature information can be understood as information indicating the features of the video to be played. Optionally, the characteristic information includes at least one of associated motion data when shooting the video to be played, user's interest flag information input for the video to be played, and content information of the video to be played. Of course, it may also be other information indicating the video to be played. Information about the characteristics. Here, the embodiment of the present application only takes as an example the feature information, which may be at least one of the feature information including associated motion data when shooting a video to be played, user's input of interest tag information for the video to be played, and content information of the video to be played. The description does not mean that the application is limited to this.

S102. Adjust the original playback speed of the corresponding video segment in the video to be played according to the characteristic information.

After the characteristic information of the video to be played is obtained through the above S101, the original playback speed of the corresponding video segment in the video to be played can be adjusted according to the characteristic information, so as to obtain the adjusted original playback speed of the corresponding video segment.

The video to be played may include multiple frames of images, and each frame of images may correspond to a time stamp. When playing a video to be played, a corresponding image frame can be played according to a corresponding time stamp. Among the videos to be played, according to different needs, some video clips can be speeded up, some video clips can be slowed down, and some videos can be played at the original playback speed. When adjusting the playback speed of the video to be played, it can be achieved by adjusting the time stamp of the corresponding image frame. For example, assuming that in the video to be played, the fifth frame image is played in the third second and the sixth frame image is played in the fourth second, then when the sixth frame image is adjusted to be played in the fifth second, the fifth frame image can be kept more 1 second, which slows down the original playback speed of the video clips from the fifth frame to the sixth frame image, and when the sixth frame image is adjusted to play at 3.5 seconds, the fifth frame image can be kept for 0.5 seconds less, that is, faster The original playback speed of the video clip from the fifth frame to the sixth frame image. Therefore, the adjustment of the original playback speed of the corresponding video segment in the video to be played can be achieved by adjusting the timestamp corresponding to each image frame in the corresponding video segment.

In this embodiment, by analyzing the feature information of the video to be played, a corresponding video segment in the to-be-played video that needs to be adjusted for the original playback speed can be determined, and the corresponding video segment can be associated with the feature information according to the playback needs. Different definitions of feature information are required. The definition rules of the feature information can be set before the action camera leaves the factory, or can be customized by the user.

Optionally, in this embodiment, the characteristic information may be at least one of associated motion data, interest flag information input by a user for the video to be played, and content information of the video to be played.

For example, when the feature information is associated motion data, the corresponding corresponding video segment may be a piece of video that has a large change in associated motion data, such as a relatively fast and / or slow corresponding video segment in the associated motion data; when the feature information is When marking information for interest, the corresponding corresponding video clip may be a video clip that the user is interested in and / or a video clip that the user is not interested in. Of course, this embodiment of the present application only uses these two types of determining corresponding video clips based on the feature information as examples. The description does not mean that the embodiments of the present application are limited to this.

After determining the corresponding video segment that needs to be adjusted in the video to be played according to the characteristic information, the original playback speed of the corresponding video segment can be accelerated or slowed down.

For example, when the feature information is associated motion data and the speed is fast, the playback speed of the corresponding video segment can be slowed down; when the feature information is associated motion data and the speed is slower, the playback of the corresponding video segment can be accelerated Speed; when the feature information is interest tag information and indicates that the user is interested, the playback speed of the corresponding video clip can be slowed down; when the feature information is interest tag information and the user is not interested, the playback speed of the corresponding video clip can be accelerated; of course The embodiments of the present application only use these adjustment methods as examples for description, but it does not mean that the embodiments of the present application are limited to this.

It should be noted that, for different feature information, the adjustment value of the original playback speed of the corresponding video segment may be different. For example, even if the original playback speed is accelerated, the original playback speed after the acceleration may be different. Or, for the feature information of the same attribute, such as the feature information, is associated motion data, if the magnitudes of the speeds in the associated motion data are different, the corresponding adjustment values of the original playback speed of the corresponding video clips are different. The adjustment value of the original playback speed of the corresponding video clip can be set as required, and is not specifically limited here.

It can be understood that when adjusting the original playback speed of the corresponding video segment according to the feature information, each frame in the corresponding video segment can be adjusted by the feature information at least one timestamp. For example, suppose that the original playback speed of the A image frame needs to be adjusted. Adjustment, then when adjusting the original speed of the A image frame according to the feature information, the A image frame can correspond to different timestamps determined by the feature information according to different adjustment values, and the number and value of the adjustment values can be performed as needed Settings.

Optionally, in the embodiment of the present application, when the feature information includes interest tag information, associated motion data, and content information, one of the feature information may be used to adjust the original playback speed of the corresponding video segment in the video to be played, or only based on The interest tag information adjusts the original playback speed of the corresponding video clip in the video to be played, that is, the priority of the interest tag information is higher than the associated motion data and content information. Of course, when adjusting the original playback speed of the corresponding video clip in the video to be played according to the characteristic information, it may also be based on the associated motion data of the video to be played, the interest tag information input by the user for the video to be played, and the content information Any two or three kinds of characteristic information adjust the original playback speed of the corresponding video clips in the video to be played. When adjusting the original play speed of the corresponding video fragments in the video to be played according to any two or three characteristic information, the preset rules can be used. And characteristic information to adjust the original playback speed of the video clips in the video to be played. For example, the interest mark information and content information of the video to be played can be determined according to preset rules in the process of adjusting the original playback speed of the corresponding video clip in the video to be played. Adjust the original playback speed of the corresponding video clip in the video to be played according to the weight occupied by each feature information in the interest tag information and the content information of the video to be played.

It should be noted that the preset rule may be set by the action camera before leaving the factory, or may be set by the user after the action camera is shipped from the factory.

It can be understood that when adjusting the original playback speed of the corresponding video clip in the video to be played according to the characteristic information, if a preset rule exists, the original playback speed of the corresponding video clip can be adjusted according to the preset rule, that is, the preset rule takes precedence The highest level, and if the feature information includes interest tag information, the original playback speed of the corresponding video clip can be adjusted according to the interest tag information. The priority of the interest tag information may also be higher than the priority of the preset rule. Of course, the respective weights of the preset rule and the interest tag information may also be set in advance to adjust the original playback speed of the corresponding video clip. Here, The embodiments of the present application are not specifically limited.

After adjusting the original playback speed of the corresponding video clip in the video to be played according to the characteristic information through S102, the following S103 may be performed:

S103. Output the adjusted to-be-played video.

After adjusting the original playback speed of the corresponding video segment in the to-be-played video according to the characteristic information through S102, the adjusted to-be-played video can be obtained. At this time, each frame in the corresponding video segment in the to-be-played video corresponds to at least two timestamps. Take two timestamps corresponding to each frame in the corresponding video segment of the playing video as an example. The two timestamps corresponding to each frame in the corresponding video segment to play the video are: the timestamp T1 corresponding to the original playback speed and the adjusted The original playback speed T2. In this way, when the adjusted to-be-played video is output, the to-be-played video can be played according to any one of the two timestamps T1 and T2, thereby realizing the diversity of video playback modes.

Each frame in the adjusted corresponding video segment can also correspond to other timestamps other than the timestamps T1 and T2. The other timestamps can be user-defined timestamps or can be determined in other ways. The time stamp is determined based on the user's historical playback record of the video related to the video to be played, which is not specifically limited here. At the same time, in addition to the corresponding video clip in the video to be played, each frame in the other video clips in the video to be played may also correspond to at least one time stamp, which may be a time stamp corresponding to the original playback speed, or It is a user-defined time stamp, and it can also be determined in other ways, such as determined by the user's historical playback record of the video related to the video to be played, which is not specifically limited here.

Therefore, after adjusting the original playback speed of the corresponding video clip in the video to be played according to the characteristic information, for the video to be played, some video clips may be played at an accelerated speed, some video clips may be played at the original playback speed, and some video clips. In order to slow down the playback, so that the playback speed of the video to be played can be adaptively adjusted according to the characteristic information, without the user manually or repeatedly manually adjusting the original playback speed of the video to be played, and the playback speed of the adjusted video to be played is not Invariably.

In the embodiment of the present application, outputting the adjusted to-be-played video may include storing the adjusted to-be-played video or playing the adjusted to-be-played video. It is specifically used for storage, playback after storage, or direct playback after output, which can be set and adjusted according to specific needs, and is not specifically limited here.

It should be noted that, in the embodiment of the present application, by storing the adjusted to-be-played video, the purpose is to make it unnecessary to repeatedly extract feature information of the to-be-played video when the to-be-played video is played subsequently, and according to the feature information Adjust the original playback speed of the corresponding video clip in the video to be played, thereby reducing the complexity of the operation, reducing the processing resources for the characteristic information of the video to be played, and improving the playback efficiency of the adjusted video to be played.

In the method for controlling the video playback speed provided by the embodiment of the present application, before outputting the adjusted to-be-played video, the feature information of the to-be-played video is obtained, and the original playback speed of the corresponding video segment in the to-be-played video is adjusted according to the feature information so that Each frame in the adjusted corresponding video segment corresponds to at least two timestamps, so that when the adjusted to-be-played video is output, it can be played according to any one of the at least two timestamps, thereby achieving a video playback mode Diversity.

It should be noted that, in the embodiment shown in FIG. 1, when acquiring characteristic information of a video to be played and adjusting an original playback speed of a corresponding video segment in the video to be played according to the characteristic information, during the shooting process of the video to be played, Obtain the characteristic information of the to-be-played video and adjust the original playback speed of the corresponding video clip in the to-be-played video according to the characteristic information; of course, you can also obtain the characteristic information of the to-be-played video after the video shooting is completed and before the to-be-played video is played, and Adjust the original playback speed of the corresponding video clip in the video to be played according to the characteristic information. In the following, the embodiments shown in FIG. 2 and FIG. 3 are used to describe in detail how to output the adjusted to-be-played video in two different time periods.

Based on the embodiment shown in FIG. 1, when acquiring feature information of a to-be-played video during the shooting process of the to-be-played video and adjusting the original playback speed of a corresponding video segment in the to-be-played video according to the feature information, please refer to FIG. 2, FIG. 2 is a schematic diagram of another method for controlling a video playback speed according to an embodiment of the present application. The method for controlling a video playback speed may include:

S201. During the shooting process of the video to be played, obtain characteristic information of the video to be played.

The feature information can be understood as information indicating the features of the video to be played. When acquiring the to-be-played video, the to-be-played video may be obtained from a video recorded and stored locally by the action camera. Of course, the to-be-played video may also be obtained by downloading through a motion camera. When the to-be-played video is obtained locally from the action camera, for example, the to-be-played video can be captured by the user holding the action camera; it can also be obtained by mounting the action camera on a carrier; or by using the action camera It can be taken by wearing on the wrist or on the head; of course, other methods can also be used. Here, the embodiments of the present application are only described by using these methods as examples, but it does not mean that the embodiments of the present application are limited to this.

For example, taking a motion camera as an example, in the process of shooting a video using a motion camera, each time a plurality of frames of images are captured, the characteristic information of the frames of images can be obtained; or when the shooting time reaches a preset duration To obtain the characteristic information of the video within the preset duration; of course, during the shooting process of the to-be-played video, the characteristic information of the to-be-played video may also be obtained according to other conditions; here, the embodiments of this application only use these two methods It is described by way of example, but it does not mean that the embodiments of the present application are limited to this.

S202. When the playback speed mode of the video to be played is a speed-adjusted playback mode or a speed-selective playback mode, adjust the original playback speed of the corresponding video segment in the video to be played according to the characteristic information.

The speed-adjusted playback mode or speed-selected playback mode can be understood as a mode of playing according to a timestamp corresponding to the adjusted original playback speed.

For example, the speed mode of the video to be played can be set in the action camera. For example, the playback speed mode may include the original playback mode or the original playback mode and the speed-adjusted playback mode or the original playback mode and the speed-selected playback mode, or the speed-adjusted playback mode or the speed-selected playback mode, or the original playback mode, the speed-adjusted playback mode, and At least one of the selected playback modes. Among them, the original playback mode is a mode for playing according to the original playback speed; the adjusted playback mode is a mode for playing according to the adjusted original playback speed (that is, a playback mode different from the original playback speed); the speed-selective playback mode is for the user during playback. When the video is to be played, the motion camera can prompt the user to select the playback speed of the video to be played, such as whether to play at the original playback speed or to play at the adjusted original playback speed.

Therefore, in the two speed play modes of the speed-adjustment play mode or the speed-selection play mode, there is a possibility of playing according to the timestamp corresponding to the adjusted original playback speed. Then, the corresponding video in the video to be played can be adjusted according to the characteristic information first. The original playback speed of the segment, so that when the video to be played needs to be played back with a timestamp corresponding to the adjusted original playback speed, a corresponding time stamp can be selected for playback.

In addition, since each frame in the adjusted corresponding video segment corresponds to at least two timestamps, when the video to be played is played, the at least two timestamps of each frame in the corresponding video segment can be selected according to a preset rule. Select a timestamp to play. In this embodiment, if it is necessary to play the corresponding video clip in the video to be played at a playback speed different from the original playback speed, preferably, the corresponding video clip can be played according to the time stamp corresponding to the characteristic information. At the same time, when the playback speed mode of the to-be-played video is a speed-selective playback mode and the user needs to play the corresponding video clip in the to-be-played video at a playback speed different from the original playback speed, the user can be further prompted to respond to Select one of the timestamps to play. Of course, when any of the above playback speed modes is not set in advance, you can also obtain the feature information of the video to be played by default when shooting with an action camera, and adjust the original playback speed of the corresponding video clip in the video to be played according to the feature information. Here, the embodiments of the present application are not specifically limited.

It should be noted that, for the implementation manner of adjusting the original playback speed of the corresponding video segment in the video to be played according to the characteristic information in this step S202, reference may be made to the description in the above S102, and details are not described herein again.

S203. Output the adjusted to-be-played video.

It should be noted that in the embodiment of the present application, there may be three possible implementation manners of outputting the adjusted to-be-played video in S203:

In a possible implementation manner, when a playback trigger event of the video to be played is detected, the adjusted video to be played is played according to a timestamp corresponding to the adjusted original playback speed.

The playback trigger event may be entering a video playback interface of a video to be played, or clicking a play button indicating playback of the video to be played. Of course, it may also be another event that triggers playback of the video to be played. For example, you can trigger the playback of the video to be played by voice or text input, or you can touch the display screen of the motion camera (such as a virtual key) to start the video playback function of the motion camera. Of course, you can also use gestures (without touching the display screen) ) To trigger the playback of the video to be played. The embodiments of the present application use these methods as examples for illustration, but it does not mean that the embodiments of the present application are limited to this.

When the playback trigger event of the video to be played is detected, the adjusted video to be played can be played according to the timestamp corresponding to the adjusted original playback speed. In this way, the user does not need to manually adjust the original playback speed of the video to be played, and the playback speed of the corresponding video clip in the video to be played has multiple possibilities, and can be adaptively adjusted according to the characteristic information, which is beneficial to achieving a variety of video playback modes Sex.

In another possible implementation manner, when a playback trigger event of a video to be played is detected, the adjusted video to be played is played according to a user operation instruction, and the user operation instruction is used to indicate a playback speed mode of the adjusted video to be played .

Similarly, the playback trigger event may be to enter the video playback interface of the video to be played, or it may be to click a play button indicating the playback of the video to be played. Of course, it may also be other events that trigger the playback of the video to be played. For example, you can trigger the playback of the video to be played by voice or text input, or you can touch the display screen of the motion camera (such as a virtual key) to start the video playback function of the motion camera. Of course, you can also use gestures (without touching the display screen) ) To trigger the playback of the video to be played. The embodiments of the present application use these methods as examples for illustration, but it does not mean that the embodiments of the present application are limited to this.

As described above, the playback speed mode of the adjusted to-be-played video indicated by the user operation instruction may be a speed-adjusted playback mode, a speed-selective playback mode, or an original playback mode. It should be noted that the user operation instruction may be input before shooting the video to be played, or may be input when shooting the video to be played, or may be input after the shooting of the video to be played is completed and before the video to be played is played. For example, when a user operation instruction is input, it can be input to the motion camera by touching the screen of the motion camera, or it can be input to the motion camera by pressing the operation button set on the screen, or it can be input by voice. To a motion camera, it can also be input to the motion camera in a text manner, so that the motion camera can obtain the user operation instruction. Of course, the embodiment of the present application only uses these three methods as examples, but does not represent the implementation of the application. Examples are limited to this.

For example, if the playback speed mode is a speed-adjusted playback mode, and each frame in the adjusted corresponding video segment has an adjusted timestamp, then each time a to-be-played video triggers playback, it can be directly adjusted according to the adjustment. If the playback speed mode is the speed-selective playback mode, each time the playback of the video to be played triggers playback, the user can be further prompted to select a time stamp to play the video in at least two timestamps. Play; if the playback speed mode is the original playback mode, each time the video to be played triggers playback, the video to be played can be played directly according to the timestamp corresponding to the original playback speed.

When the playback trigger event of the video to be played is detected, the adjusted video to be played is played according to a user operation instruction, and the user operation instruction is used to indicate the adjusted playback speed mode of the video to be played, so that under different playback speed modes, The video to be played can be played according to the corresponding playback speed, which is beneficial to realize the diversity of video playback methods, and also provides the user with a variety of choices, which is helpful to meet different playback needs.

In another possible implementation manner, when a playback trigger event of the video to be played is detected, selection information for the playback speed mode of the adjusted video to be played is prompted; a selection instruction input by the user according to the selection information is received at least The target timestamp is determined from the two timestamps; the adjusted to-be-played video is played according to the target timestamp.

For example, the selection instruction may be input to the motion camera by touching the screen of the motion camera, or may be input to the motion camera by pressing the operation button set on the screen, or may be input to the motion camera by voice. The selection can be input to the motion camera in a text manner, so that the motion camera can obtain the selection instruction. Of course, the embodiments of the present application only use these three methods as examples, but it does not mean that the embodiments of the present application are limited to this.

In this embodiment, the selection of the speed play mode may include playing the video to be played at the original speed, or playing the video to be played at a speed different from the original playback speed. When the user chooses to play the video to be played at a speed different from the original playback speed, the user may further be prompted to select a corresponding time stamp from the timestamp corresponding to the original playback speed to play the video to be played.

The prompt information may be presented in a manner displayed on a display screen, or may be presented in a manner of voice output, and may also be presented in a photoelectric form.

When the motion camera detects the playback trigger event of the video to be played, it can prompt the user with selection information for the adjusted playback speed mode of the video to be played. Correspondingly, the user can enter a selection instruction based on the selection information, and according to the selection instruction, The target timestamp is determined from at least two timestamps; the adjusted to-be-played video is played according to the target timestamp. In this way, when playing a to-be-played video, the user can conveniently adjust the speed play mode of the to-be-played video, and can also easily change the speed play mode when playing different to-be-played videos without the need for additional speed playback. The mode switching setting is helpful to improve the user's instantaneous selectivity of the speed of the video to be played.

The above-mentioned embodiment shown in FIG. 2 describes in detail the technical solution of obtaining characteristic information of a video to be played during the video shooting process, and adjusting the original playback speed of a corresponding video segment in the video to be played according to the characteristic information. The video will be described in detail below. After the shooting is completed, obtain the characteristic information of the video to be played before the video is played, and adjust the original playback speed of the corresponding video clip in the video to be played according to the characteristic information (that is, when the playback trigger event of the video to be played is detected, the video to be played is acquired Based on the feature information, and adjusting the original playback speed of the corresponding video segment in the video to be played according to the feature information). Based on the embodiment shown in FIG. 1, please refer to FIG. 3, which is provided by an embodiment of the present application. A schematic diagram of another method for controlling a video playback speed. The method for controlling a video playback speed may include:

S301: During the shooting process of the video to be played, record characteristic information of the video to be played.

For example, in the embodiment of the present application, when recording the characteristic information of the video to be played, the characteristic information of the video to be played may be recorded when the video to be played is started, or during the shooting process, the information to be recorded may be recorded every several frames. The feature information of the playback video can also be recorded after being triggered by the user during the shooting process.

Thus, in the embodiment of the present application, by recording feature information of the video to be played during the video shooting process, when the feature information of the video to be played is obtained in the following S302, it can be conveniently searched according to the association between the video to be played and its feature information. The feature information can also obtain only the feature information of part of the video clips as needed, without having to extract the feature information of the video to be played when a playback trigger event of the video to be played is detected, thereby improving the feature information of the video to be played. Get efficiency.

S302. When a playback trigger event of a video to be played is detected, feature information of the video to be played is acquired.

In this embodiment, unlike the embodiment shown in FIG. 2, the characteristic information of the video to be played can be obtained when triggering the playback of the video to be played. Therefore, before the to-be-played video is not played, the original playback speed of the corresponding video segment in the to-be-played video may not be adjusted, so that the waste of processing resources of the action camera can be avoided when the to-be-played video is not possible to play. When the video to be played needs to be played, the original playback speed of the corresponding video segment in the video to be played can be adjusted according to the characteristic information.

S303. When the playback speed mode of the video to be played is a speed-adjusted playback mode or a speed-selective playback mode, adjust the original playback speed of the corresponding video segment in the video to be played according to the characteristic information.

The speed-adjusted playback mode is a mode for playing according to a timestamp corresponding to the adjusted original playback speed, and the speed-selective playback mode is a mode for playing according to a timestamp corresponding to the adjusted original playback speed. Therefore, in these two speed playback modes, the original playback speed of the corresponding video clips in the video to be played can be adjusted first according to the characteristic information, so that when the video to be played needs to be played back with the timestamp corresponding to the adjusted original playback speed, Select the corresponding time stamp for playback.

It can be understood that, for a description of the broadcast speed mode of the video to be played involved in step S303, reference may be made to the description in S202 above, and details are not described herein again.

It should be noted that, for the implementation manner of adjusting the original playback speed of the corresponding video clip in the video to be played according to the characteristic information in step S303, reference may be made to the description in S102, and details are not described herein again.

S304. Play the adjusted video to be played according to the timestamp corresponding to the adjusted original playback speed.

After adjusting the original playback speed of the corresponding video segment in the video to be played according to the characteristic information through the foregoing S303, and after obtaining the adjusted original playback speed, the adjusted to-be-played video can be played according to the timestamp corresponding to the adjusted original playback speed. In this way, the user does not need to manually adjust the original playback speed of the video to be played, and the playback speed of the corresponding video clip in the video to be played has multiple possibilities, and can be adaptively adjusted according to the characteristic information, which is beneficial to achieving a variety of video playback modes Sex.

Based on the embodiments corresponding to FIG. 1, FIG. 2 or FIG. 3, in order to explain more clearly in the embodiment of the present application, how to adjust the original playback speed of the corresponding video segment in the video to be played according to the characteristic information, the following will be adopted through the following possibilities The method is described in detail how to adjust the original playback speed of the corresponding video clip in the video to be played according to the characteristic information.

In a first possible implementation manner, when the feature data is associated motion data, the associated motion data may include a photographing device and / or a carrier of the photographing device and / or a mount of the photographing device in one or more directions Acceleration data and / or angular velocity data, the shooting device may be used for shooting a video to be played. Correspondingly, adjusting the original playback speed of the corresponding video clip in the video to be played according to the characteristic information in S102 may include:

If the acceleration data is smaller than the first threshold and / or the angular acceleration data is smaller than the second threshold, the original playback speed of the corresponding video segment in the video to be played is accelerated; if the acceleration data is larger than the third threshold and / or the angular acceleration data is larger than the fourth threshold, The original playback speed of the corresponding video clip in the video to be played is slowed down.

The sizes of the first threshold, the second threshold, the third threshold, and the fourth threshold can be set according to actual needs. Here, for the sizes of the first threshold, the second threshold, the third threshold, and the fourth threshold, the present application The examples are not further limited.

The acceleration data and / or angular velocity data may be data on at least one of the X, Y, and Z axes, and may also be data in other directions. The motion data of the shooting device, the carrier of the shooting device, and / or the mounting device of the shooting device in at least one of the above directions may affect the picture when the video to be played is shot. For example, when the shooting device shakes up and down, The corresponding video clip may also be a jittering picture. Therefore, according to the corresponding acceleration data and / or angular velocity data, the original playback speed of the corresponding video clips in the video to be played can be adjusted, and the video clips that are not valued can be quickly filtered, and some video clips can also be focused to obtain more video information. .

For example, when a user is sitting in a car and holding a motion camera to shoot a video, when the car is in a slow driving state, the acceleration data may be less than the first threshold, then the side shows that the video captured by the user during this time has changed. It is not large, which can correspondingly speed up the original playback speed of corresponding video clips taken during this period of time; when the car is processing a sudden braking state, its acceleration data may be greater than the third threshold, then the side shows that the video taken by the user during this time has changed Larger, it can correspondingly slow down the original playback speed of corresponding video clips taken during that period of time.

Or, when a user is sitting in a car and holding a motion camera to shoot a video, when the car is turning, it can also speed up or slow down the corresponding video clip according to the magnitude relationship between the angular acceleration and the second or fourth threshold. The original playback speed.

In a second possible implementation manner, when the feature data is interest mark information, and the interest mark information is used to indicate the user's degree of interest, the interest mark information may be recorded during the shooting process of the video to be played or in the video to be played. Recorded during historical playback. Correspondingly, adjusting the original playback speed of the corresponding video clip in the video to be played according to the characteristic information in S102 may include: If the interest flag information meets the first condition, it means that the user's degree of interest is not high, then The original playback speed of the corresponding video segment in the video to be played can be accelerated; if the interest tag information satisfies the second condition, it means that the user has a higher degree of interest, so the original playback speed of the corresponding video segment in the video to be played can be slowed down.

The first condition is used to indicate that the user's degree of interest is not high; the second condition is used to indicate that the user's degree of interest is high. When the interest mark information is used to indicate the user's degree of interest, mark rules can also be set in advance to indicate different degrees of interest of the user according to different interest mark information, such as a square pattern indicating that the user is not interested, and a heart-shaped pattern indicating a sense of interest. Interest, the corresponding interest tag information can be a square pattern or a heart-shaped pattern; when the interest tag information is a square pattern, it indicates that the user's degree of interest is not high, and the first condition is met, then the corresponding video segment in the video to be played is accelerated The original playback speed of the video, the corresponding video clip in the video to be played is fast; on the contrary, when the interest mark information is a heart-shaped pattern, it indicates that the user's degree of interest is extremely high, and if the second condition is met, the playback is slowed down The original playback speed of the corresponding video clips in the video is based on the slow playback and fast playback of the corresponding video clips in the to-be-played video. Of course, the embodiments of the present application only use these two methods as examples, but it does not mean that the embodiments of the present application are limited to this. In addition, it should be noted that, for a segment that has no interest mark information set, it can be assumed that the user is generally interested, and the corresponding video segment can be played at the original playback speed.

The corresponding video clips corresponding to the interest tag information may be a video before and after the interest tag information is marked, or a video after the interest tag information is marked, or a video before the interest tag information is marked, or may be A video between the two interest mark information tags may also be a video corresponding to the length of time occupied by the interest mark information.

For example, when a user plays a movie video, if the user does not like the first clip in the movie video, the user can mark a square pattern at at least one time point in the first clip; if the user prefers the movie video The second segment in, the user can mark the heart-shaped pattern at at least one time point in the second segment, and the above-mentioned marking information can be retained. In this way, when the movie video is replayed, the movie video can be played according to the interest mark information, that is, the original playback speed of the first segment is correspondingly accelerated, so that the first segment is played back quickly, so that the user can quickly finish playing the user who is not interested Correspondingly slows down the original playback speed of the second clip, so that the second clip is played slowly, so that the user can have enough time to enjoy the second clip, satisfying the user's interest and improving the user experience .

In addition, it should be noted that during the playback of the video to be played, the interest mark information may be displayed. Wherein, by displaying the interest mark information during the playback of the to-be-played video, the user can synchronously obtain the interest mark information corresponding to the corresponding video segment in the to-be-played video when watching the to-be-played video, so that the user can The information intuitively determines the interesting and uninteresting segments of the to-be-played video. In addition, when the to-be-played video is replayed, it is convenient for users to edit according to the interest-tag information to obtain new interest-tag information, and can The video to be played is replayed according to the new interest mark information.

For example, the interest identification information may indicate that the user is interested, it may also indicate that the user is not interested, or it may be indicated that the user is generally interested. For a segment that the user is interested in, the original playback speed of the segment may be slowed down; , You can speed up the original playback speed of the clip; for clips of general interest, you can continue to maintain the original playback speed of the clip.

Optionally, when displaying the interest mark information, the interest mark information may be displayed on a playback progress bar of the video to be played, or the interest mark information may be displayed on the display screen of the action camera such as the upper left corner or the upper right corner. Of course, it may also be The interest mark information is displayed in other ways. Here, the embodiment of the present application only uses these three display modes as examples for illustration, but it does not mean that the present application is limited to this.

Further, when displaying the interest mark information, the interest mark information may be displayed by color. For example, the video corresponding to the red segment indicates that the user is interested, and the blue corresponding segment indicates that the user is not interested. The interest mark information may also be displayed through a pattern, such as two The corresponding segment between the two heart-shaped patterns indicates that the user is interested, and the corresponding segment between the two square patterns indicates that the user is not interested. Of course, there are other ways, and here, the embodiments of this application only use these two as examples. The description does not mean that the embodiments of the present application are limited to this.

It should be noted that when the user's interest changes, such as when the user is interested in the fourth segment that was not previously interested, the original playback speed of the fourth segment needs to be adjusted accordingly, so that the fourth segment is played slowly. In this case, the user can enter a re-editing command on the motion camera during the playback of the video to be played, so that after receiving the re-editing command, the motion camera edits the interest tag information according to the re-editing instruction to change the fourth The interest mark information of the clip is adjusted to indicate the interest mark information of the user's interest, thereby slowing down the current playback speed of the fourth clip, so that the user can have enough time to enjoy the fourth clip, satisfying the user's interest and improving user experience. For example, when the interest mark information is edited by a re-edit command, and the interest mark information is displayed by a progress bar as an example, the interest mark information on the progress bar can be dragged or modified, such as a square pattern corresponding to the interest mark information. Modify it to a heart-shaped pattern, or drag the interest mark information from point A to point B on the progress bar, or you can also click point C on the progress bar, and click point D on the progress bar. The video clips corresponding to points C and D are edited. Of course, there are other possible editing methods. Here, the embodiment of the present application only uses these two methods as examples, but it does not mean that the application is limited. herein.

In a third possible implementation manner, when the feature information is content information, and the content information includes motion feature information of the target object in the video to be played, and the motion feature information includes at least the motion posture information of the target object, When adjusting the original playback speed of the corresponding video clip in the video to be played based on the motion feature information of the target object in the video, you need to determine the motion scene in the video to be played, and then adjust the original Play speed.

Optionally, in this embodiment of the present application, a motion scene in a video to be played may be determined in at least two possible ways.

Method 1: Receive input information of a user for a sports scene; and determine a sports scene in a video to be played according to the input information.

For example, a certain diving video is taken as an example. When determining the motion scene in the video to be played, the user can edit the diving video in advance, marking the motion scene of the diving video as the diving scene, so that the motion camera receives the user input. After the diving scene, the motion scene in the video to be played can be determined according to the diving scene input by the user. Of course, the motion camera can also store a variety of motion scenes in advance, and the user can select among a variety of motion scenes and input selection information to the motion camera, so that the motion camera determines the motion scene in the video to be played according to the selection information input by the user.

Method 2: Match the image features in the video to be played with the image features in the preset motion scene; and determine the motion scene in the video to be played according to the matching result.

For example, the same, taking a diving video as an example, when determining the motion scene in the video to be played, the image feature in the video to be played can be extracted first, and the image feature is compared with the image feature in the preset motion scene. Make a match. For example, after extracting the first frame image, the tenth frame image, and the thirtieth frame image in the video to be played, these image characteristics can be matched with the image characteristics in a preset motion scene. The image of the athlete taking off in the diving scene matches. The twentieth frame of the image matches the image of the athlete tumbling in the air in the diving scene. The thirtieth frame of the image matches the image of the athlete entering the water in the diving scene. According to the matching result, it can be determined The motion scene of the video to be played is a diving scene. Conversely, if it does not match, it can continue to match with the features in other preset motion scenes.

If the image features in the video to be played cannot be matched with the image features in the preset motion scene, the user may be prompted accordingly to prompt the user to enter a motion scene, or prompt the user to make a matching error, or change the matching strategy and try again. match.

It should be noted that the embodiments of the present application are only described by using the foregoing two modes as examples, but it does not mean that the present application is limited to this.

After determining the motion scene in the playback video through the above two methods, correspondingly, adjusting the original playback speed of the corresponding video segment in the video to be played according to the characteristic information in S102 may include:

The motion state of the target object in the motion scene is determined according to the motion characteristic information; and the original playback speed of the corresponding video segment in the video to be played is accelerated or slowed according to the motion state.

In different sports scenes, there are different highlights that users focus on. For example, in the basketball game scene, the shooting state is more eye-catching. For example, in the diving game scene, the water-entry state is more eye-catching. For another example, in a football game, the goal status is more eye-catching. Of course, there are some fragments that can be ignored by users. Therefore, in different motion scenes, the corresponding video segment in the video to be played can be determined and adjusted according to different motion states therein, and the original playback speed of the corresponding video segment can be adjusted.

Also taking a diving video as an example, if it is determined that the athlete's sports state in the diving scene is a take-off state based on the user's motion posture information, the original playback speed of the video segment corresponding to the take-off state is accelerated, so that the corresponding take-off state is quickly played. If the movement state of the athlete in the diving scene is determined based on the user ’s movement posture information, the original playback speed of the video segment corresponding to the water entry state is slowed down, so that the video segment corresponding to the water entry state is played slowly, In this way, the user can have enough time to enjoy the wonderful moment when the athlete enters the water, thereby improving the user experience.

It should be noted that the above motion feature information may also include, but is not limited to, the motion amplitude information and motion speed information of the target object. Therefore, when determining the motion state of the target object in a motion scene through the motion characteristic information of the target object, it may not only Using only motion posture information is helpful to improve the accuracy of determining the motion state.

In a fourth possible implementation manner, when the characteristic information is content information, and the content information includes environmental information in the video to be played, and the environmental information includes environmental brightness, correspondingly, in S102, corresponding adjustments in the video to be played are adjusted according to the characteristic information. The original playback speed of a video clip can include:

If the ambient brightness is less than the fifth threshold, the original playback speed of the corresponding video clip in the video to be played is accelerated or slowed according to the first preset rule; if the ambient brightness is greater than the sixth threshold, the second preset rule is used to accelerate or slow down The original playback speed of the corresponding video clip in the video to be played.

The sizes of the fifth threshold and the sixth threshold can be set according to actual needs. Here, the sizes of the fifth threshold and the sixth threshold are not further limited in the embodiments of the present application.

For example, taking the crime detection or investigation scene as an example, the corresponding to-be-played video is the suspect's crime video. If the suspect commits the crime at night, the corresponding brightness of the corresponding crime video is relatively low. The first preset rule is that when you need to watch the video carefully, you can slow down the original playback speed of the corresponding video clips in the crime video, so that the corresponding video clips are broadcast slowly, so that the cracker or investigator can more clearly view the suspect ’s crime through. When the ambient brightness is less than the fifth threshold and the corresponding first preset rule is that it is not necessary to watch the video carefully, the original playback speed of the corresponding video segment in the crime video can be accelerated, so that the corresponding video segment can be played quickly. On the contrary; when the ambient brightness is greater than the sixth threshold and the corresponding second preset rule is that the video does not need to be carefully watched, the original playback speed of the corresponding video clip in the crime video can be accelerated, so that the corresponding video clip can be played quickly; When the ambient brightness is greater than the sixth threshold and the corresponding second preset rule is that the video needs to be carefully watched, the original playback speed of the corresponding video clip in the crime video can be slowed down, so that the corresponding video clip is slow-played. Or investigators can more clearly see what happened to the suspect.

Of course, it can be understood that the first preset rule and / or the second preset rule can also be set for different video needs. For example, when the video to be played is a video for viewing, the first preset rule Under regular conditions, if the ambient brightness in the video to be played is less than the fifth threshold, it means that the corresponding video segment has no viewing value, and the corresponding video segment in which the ambient brightness in the video to be played is less than the fifth threshold can be quickly played.

In addition, it should be noted that the original playback speed of the corresponding video clip may also be accelerated or slowed down according to the change of the ambient brightness in the corresponding video clip in the video to be played. For example, when the change in the ambient brightness in a corresponding video segment in a video to be played is greater than a certain threshold, because the user's eyes need to adapt to a sudden change in ambient brightness, the relevant information of some image frames in the corresponding video segment may be ignored. Therefore, the original playback speed of the corresponding video clip can be slowed, and the corresponding video clip can be played back slowly. Of course, when the change in the ambient brightness in the corresponding video segment in the video to be played is less than a certain threshold, the user's eyes do not need to adapt to the sudden change in the ambient brightness. Therefore, the original playback speed of the corresponding video clip can also be accelerated, so that the corresponding video clip can be played quickly.

In a fifth possible implementation manner, when the feature information is content information, and the content information includes a video scene in the video to be played; correspondingly, in S102, the original playback speed of the corresponding video segment in the video to be played is adjusted according to the feature information. Can include:

If the video scene is a scene of drastic change, the original playback speed of the corresponding video clip in the video to be played is slowed down; if the video scene is a scene of slow change, the original play speed of the corresponding video clip in the video to be played is accelerated.

For example, taking a video scene as a swinging video of a pendant lamp during an earthquake, for example, during an earthquake, the corresponding pendant lamp swings violently, the video scene corresponding to the corresponding video clip is a scene of drastic change, which can slow down the corresponding scene of the drastic change The original playback speed of the video clip, so that the user can have enough time to watch the swing of the pendant lamp, and indirectly obtain the vibration of the earthquake. After the earthquake, if there are still aftershocks and the corresponding pendant lamp swings slowly, the video scene corresponding to the corresponding video clip is a slowly changing scene, which can speed up the original playback speed of the video clip corresponding to the drastically changing scene.

In a sixth possible implementation manner, when the feature information is the content difference between the first image frame and the second image frame in the video to be played, correspondingly, in S102, the corresponding video segments in the video to be played are adjusted according to the feature information. The original playback speed can include:

The content difference between the first image frame and the second image frame in the video to be played is detected according to the content information, and the image frames spaced a preset number of frames between the first image frame and the second image frame; if the content difference is greater than a seventh threshold, The video scene determined according to the first image frame and the second image frame is a scene that changes drastically, and slows down the original playback speed of the corresponding video clip in the video to be played; if the content difference is less than the eighth threshold, the video scene based on the first image frame and The video scene determined by the second image frame is a slowly changing scene and accelerates the original playback speed of the corresponding video clip in the video to be played.

The sizes of the seventh threshold and the eighth threshold can be set according to actual needs. Here, the sizes of the seventh threshold and the eighth threshold are not further limited in the embodiments of the present application.

Optionally, in the embodiment of the present application, the content difference may be a change in the position of the target object in the image frame between the first image frame and the second image frame; it may also be the target object in the first image frame and the second image frame. The area change in the image frame; of course, the embodiment of the present application only uses these two methods as examples for illustration, but it does not mean that the embodiment of the present application is limited to this.

Optionally, the content difference includes a change in features between the foreground image and the background image of the first frame image relative to features between the foreground image and the background image of the second frame image.

Among them, the first image frame and the second image frame may be two image frames with an interval of 5 frames, or two frame images with an interval of 6 frames, and of course, two frame images with an interval of 8 frames, Specific settings can be made according to actual needs. In addition, the sizes of the seventh threshold and the eighth threshold can be set according to actual needs. Here, the sizes of the seventh threshold and the eighth threshold are not further limited in the embodiments of the present application.

For example, taking the video to be played as a football match video, the foreground image in the first image frame and the second image frame is the athlete, and the background image is the ground. If the distance between the athlete and the center of the stadium in the first image frame is M M, the distance between the player and the center of the pitch in the tenth image frame is N. If the absolute value of the difference between M and N is less than the eighth threshold, it means that the video of the corresponding video segment corresponding to the first frame image and the tenth frame image The scene is a slowly changing scene, so the original playback speed of the video clip corresponding to the current video scene is accelerated, so that the video clip corresponding to the current video scene is played quickly. Conversely, if the absolute value of the difference between M and N is greater than the seventh threshold, it means that the video scene of the corresponding video segment corresponding to the first image frame and the tenth image frame is a drastic change scene, and the video corresponding to the current video scene is slowed down. The original playback speed of the clip, so that the video clip corresponding to the current video scene is played slowly, so that the user can have enough time to enjoy the exciting moments of the ball game, thereby improving the user experience.

The foregoing embodiment is only described by taking the content difference including the feature between the foreground image and the background image of the first image frame as compared with the feature between the foreground image and the background image of the second image frame as an example. Of course, the content difference also The content overlap of the first image frame with respect to the second image frame may be included. Here, the embodiments of the present application only use these two methods as examples, but it does not mean that the embodiments of the present application are limited to this.

It should be noted that, in the embodiment of the present application, when adjusting the original playback speed of the corresponding video segment in the video to be played according to the characteristic information, only the above six possible implementation manners are used as examples for illustration, but it does not represent the present application. The embodiment is limited to this.

FIG. 4 is a schematic structural diagram of a video playback speed control device 40 according to an embodiment of the present application. Referring to FIG. 4, the video playback speed control device 40 may include a processor 401 and a memory 402.

The memory 402 is configured to store program instructions.

The processor 401 is configured to call and execute program instructions stored in the memory 402 to execute obtaining feature information of a video to be played; and adjust an original playback speed of a corresponding video segment in the video to be played according to the feature information; and output an adjusted video to be played .

Optionally, the processor 401 is specifically configured to store the adjusted to-be-played video.

Optionally, the processor 401 is specifically configured to acquire characteristic information of a video to be played during a shooting process of the video to be played.

Optionally, the processor 401 is specifically configured to play an adjusted to-be-played video according to a timestamp corresponding to the adjusted original playback speed when a playback trigger event of the to-be-played video is detected.

Optionally, the processor 401 is specifically configured to play the adjusted to-be-played video according to a user operation instruction when a playback trigger event of the to-be-played video is detected, and the user operation instruction is used to indicate the adjusted playback speed of the to-be-played video mode.

Optionally, the processor 401 is specifically configured to prompt selection information for an adjusted playback speed mode of the video to be played when a playback trigger event of the video to be played is detected; receive a selection instruction input by the user according to the selection information, and The target timestamp is determined from at least two timestamps; and the adjusted to-be-played video is played according to the target timestamp.

Optionally, the processor 401 is specifically configured to obtain characteristic information of the video to be played when a playback trigger event of the video to be played is detected; and play the adjusted video to be played according to a timestamp corresponding to the adjusted original playback speed. .

Optionally, the processor 401 is further configured to record feature information of the video to be played during a shooting process of the video to be played.

Optionally, the processor 401 is specifically configured to adjust an original playback speed of a corresponding video segment in a video to be played according to characteristic information when a playback speed mode of the video to be played is a speed-adjusted playback mode or a speed-selective playback mode.

Optionally, the characteristic information includes at least one of associated motion data when shooting the video to be played, interest flag information input by the user for the video to be played, and content information of the video to be played.

Optionally, the priority of the interest tag information is higher than the priority of the associated motion data and content information.

Optionally, the associated motion data includes acceleration data and / or angular velocity data of the photographing device and / or the carrier of the photographing device and / or the mounting device of the photographing device in one or more directions, and the photographing device is configured to photograph the to-be-played video.

The processor 401 is specifically configured to accelerate the original playback speed of the corresponding video segment in the video to be played if the acceleration data is less than the first threshold and / or the angular acceleration data is less than the second threshold; if the acceleration data is greater than the third threshold and / or angle If the acceleration data is greater than the fourth threshold, the original playback speed of the corresponding video segment in the video to be played is slowed down.

Optionally, the interest mark information is used to indicate the user's degree of interest, and the interest mark information is recorded during the shooting process of the video to be played or recorded during the historical playback of the video to be played.

The processor 401 is specifically configured to accelerate the original playback speed of the corresponding video segment in the video to be played if the interest mark information satisfies the first condition, and to slow down the corresponding video segment in the video to be played if the interest mark information satisfies the second condition. Original playback speed.

Optionally, the processor 401 is further configured to display interest mark information during the playing process of the video to be played.

Optionally, the processor 401 is specifically configured to display interest mark information on a playback progress bar of a video to be played.

Optionally, the processor 401 is further configured to receive a re-editing instruction for the interest mark information during the playback of the video to be played; edit the interest mark information according to the re-edit instruction; and adjust the to-be-played information according to the edited interest mark information. The current playback speed of the corresponding video clip in the video.

Optionally, the content information includes motion characteristic information of the target object in the video to be played, and the motion characteristic information includes at least motion posture information of the target object.

The processor 401 is further configured to determine a motion scene in a video to be played.

The processor 401 is specifically configured to determine the motion state of the target object in the motion scene according to the motion feature information; and accelerate or slow down the original playback speed of the corresponding video segment in the video to be played according to the motion state.

Optionally, the processor 401 is specifically configured to receive input information of a user for a motion scene; and determine a motion scene in a video to be played according to the input information.

Optionally, the processor 401 is specifically configured to match image features in a video to be played with image features in a preset motion scene; and determine a motion scene in the video to be played according to the matching result.

Optionally, the content information includes environmental information in the video to be played, and the environmental information includes environmental brightness.

The processor 401 is specifically configured to speed up or slow down the original playback speed of the corresponding video segment in the video to be played according to the first preset rule if the ambient brightness is less than the fifth threshold; if the ambient brightness is greater than the sixth threshold, according to the second The preset rules speed up or slow down the original playback speed of the corresponding video clip in the video to be played.

Optionally, the content information includes a video scene in a video to be played.

The processor 401 is specifically configured to slow the original playback speed of the corresponding video clip in the video to be played if the video scene is a sharply changing scene; and to speed up the original playback of the corresponding video clip in the video to be played if the video scene is a slowly changing scene speed.

Optionally, the processor 401 is specifically configured to detect the content difference between the first image frame and the second image frame in the video to be played according to the content information, and the preset image number is spaced between the first image frame and the second image frame. Image frames; if the content difference is greater than the seventh threshold, the video scene determined according to the first image frame and the second image frame is a drastic change scene, and the original playback speed of the corresponding video segment in the video to be played is slowed down; if the content difference is less than The eighth threshold, the video scene determined according to the first image frame and the second image frame is a slowly changing scene, and the original playback speed of the corresponding video segment in the video to be played is accelerated.

The above-mentioned video playback speed control device 40 may correspondingly execute the technical solution of the video playback speed control method of any embodiment, and its implementation principles and technical effects are similar, which are not described herein again.

An embodiment of the present application further provides a motion camera, which is characterized in that it includes: a video playback speed control device shown in any one of the foregoing embodiments.

The foregoing motion camera may correspondingly implement the technical solution of the method for controlling the video playback speed of any embodiment, and its implementation principles and technical effects are similar, and details are not described herein again.

An embodiment of the present application further provides a computer-readable storage medium. A computer program is stored on the computer-readable storage medium. When the computer program is executed by a processor, a method for controlling a video playback speed according to any embodiment is performed. .

The above computer-readable storage medium may correspondingly execute the technical solution of the method for controlling the video playback speed of any embodiment, and its implementation principles and technical effects are similar, and details are not described herein again.

Finally, it should be noted that the above embodiments are only used to describe the technical solution of the present application, rather than limiting it. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or to replace some or all of the technical features equivalently; and these modifications or replacements do not depart from the essence of the corresponding technical solutions range.

Claims

A method for controlling video playback speed, comprising:

Obtain the characteristic information of the video to be played;

Adjusting an original playback speed of a corresponding video segment in the video to be played according to the characteristic information;

Output adjusted to-be-played video;

Each frame in the adjusted corresponding video segment corresponds to at least two timestamps, and at least two of the timestamps include a timestamp corresponding to the original playback speed and a timestamp corresponding to the adjusted original playback speed.
The method according to claim 1, wherein the output adjusted video to be played comprises:

The adjusted to-be-played video is stored.
The method according to claim 1, wherein the obtaining and the feature information of the video to be played comprises:

During the shooting process of the video to be played, characteristic information of the video to be played is acquired.
The method according to claim 3, wherein the output adjusted video to be played comprises:

When a playback trigger event for the video to be played is detected, the adjusted video to be played is played according to a timestamp corresponding to the adjusted original playback speed.
The method according to claim 3, wherein the output adjusted video to be played comprises:

When a playback trigger event for the video to be played is detected, the adjusted video to be played is played according to a user operation instruction, and the user operation instruction is used to indicate a playback speed mode of the adjusted video to be played.
The method according to claim 3, wherein the output adjusted video to be played comprises:

When detecting a playback trigger event for the video to be played, prompting selection information for a playback speed mode of the adjusted video to be played;

Receiving a selection instruction input by a user according to the selection information, and determining a target timestamp among at least two of the timestamps;

Playing the adjusted to-be-played video according to the target timestamp.
The method according to claim 1, wherein the obtaining and the feature information of the video to be played comprises:

When detecting a playback trigger event for the video to be played, acquiring characteristic information of the video to be played;

The output-adjusted video to be played includes:

Playing the adjusted video to be played according to a timestamp corresponding to the adjusted original playback speed.
The method according to claim 7, wherein before the acquiring characteristic information of a video to be played, the method further comprises:

During the shooting process of the video to be played, characteristic information of the video to be played is recorded.
The method according to any one of claims 1 to 8, wherein the adjusting an original playback speed of a corresponding video segment in the video to be played according to the characteristic information comprises:

When the playback speed mode of the video to be played is a speed-adjusted playback mode or a speed-selective playback mode, the original playback speed of the corresponding video segment in the video to be played is adjusted according to the characteristic information.
The method according to claim 9, wherein the characteristic information includes associated motion data when shooting the video to be played, interest tag information input by a user for the video to be played, and content of the video to be played At least one of the messages.
The method according to claim 10, wherein a priority of the interest mark information is higher than a priority of the associated motion data and the content information.
The method according to claim 10, wherein the associated motion data comprises acceleration data in one or more directions of the photographing device and / or a carrier of the photographing device and / or a mount of the photographing device And / or angular velocity data, the shooting device is used to shoot the video to be played;

The adjusting the original playback speed of a corresponding video segment in the video to be played according to the characteristic information includes:

If the acceleration data is less than a first threshold value and / or the angular acceleration data is less than a second threshold value, speeding up the original playback speed of the corresponding video segment in the video to be played;

If the acceleration data is greater than a third threshold and / or the angular acceleration data is greater than a fourth threshold, the original playback speed of the corresponding video segment in the video to be played is slowed down.
The method according to claim 10, wherein the interest mark information is used to indicate a degree of interest of the user, and the interest mark information is recorded during a shooting process of the video to be played or is recorded in the video. Recorded during the historical playback of the video to be played;

The adjusting the original playback speed of a corresponding video segment in the video to be played according to the characteristic information includes:

If the interest mark information satisfies the first condition, speed up the original playback speed of the corresponding video segment in the video to be played;

If the interest mark information satisfies the second condition, the original playback speed of the corresponding video segment in the video to be played is slowed down.
The method according to claim 13, further comprising:

During the playback of the video to be played, the interest mark information is displayed.
The method according to claim 14, wherein the displaying the interest mark information comprises:

The interest mark information is displayed on a playback progress bar of the video to be played.
The method according to claim 15, further comprising:

Receiving a re-editing instruction for the interest mark information during the playback of the video to be played;

Editing the interest mark information according to the re-editing instruction;

And adjusting a current playback speed of a corresponding video segment in the video to be played according to the edited interest mark information.
The method according to claim 10, wherein the content information includes motion feature information of a target object in the video to be played, and the motion feature information includes at least motion posture information of the target object;

Before adjusting the original playback speed of the corresponding video segment in the video to be played according to the characteristic information, the method further includes:

Determining a motion scene in the video to be played;

The adjusting the original playback speed of a corresponding video segment in the video to be played according to the characteristic information includes:

Determining a motion state of the target object in the motion scene according to the motion characteristic information;

Speed up or slow down the original playback speed of the corresponding video clip in the video to be played according to the motion state.
The method according to claim 17, wherein the determining a motion scene in the video to be played comprises:

Receiving user input for sports scenes;

Determining a motion scene in the video to be played according to the input information.
The method according to claim 17, wherein the determining a motion scene in the video to be played comprises:

Matching image features in the video to be played with image features in a preset motion scene;

A motion scene in the video to be played is determined according to a matching result.
The method according to claim 10, wherein the content information includes environmental information in the video to be played, and the environmental information includes environmental brightness;

The adjusting the original playback speed of a corresponding video segment in the video to be played according to the characteristic information includes:

If the ambient brightness is less than a fifth threshold, speeding up or slowing down the original playback speed of the corresponding video clip in the video to be played according to a first preset rule;

If the ambient brightness is greater than a sixth threshold, the original playback speed of the corresponding video segment in the video to be played is accelerated or slowed down according to a second preset rule.
The method according to claim 10, wherein the content information includes a video scene in the video to be played;

The adjusting the original playback speed of a corresponding video segment in the video to be played according to the characteristic information includes:

If the video scene is a scene of drastic change, slowing down the original playback speed of the corresponding video clip in the video to be played;

If the video scene is a slowly changing scene, the original playback speed of the corresponding video clip in the video to be played is accelerated.
The method according to claim 10, wherein the adjusting an original playback speed of a corresponding video segment in the video to be played according to the characteristic information comprises:

Detecting a content difference between a first image frame and a second image frame in the video to be played according to the content information, and an image frame spaced a preset number of frames between the first image frame and the second image frame;

If the content difference is greater than a seventh threshold, the video scene determined according to the first image frame and the second image frame is a drastically changing scene, and the original of the corresponding video segment in the video to be played is slowed down. Play speed;

If the content difference is less than an eighth threshold, the video scene determined according to the first image frame and the second image frame is a slowly changing scene, and the original playback of the corresponding video segment in the video to be played is accelerated speed.
The method according to claim 22, wherein the content difference comprises a feature between a foreground image and a background image of the first frame image relative to a foreground image and a background image of the second frame image Changes in characteristics.
A video playback speed control device, comprising a processor and a memory;

The memory is used to store program instructions;

A processor for invoking and executing program instructions stored in the memory to execute obtaining characteristic information of a video to be played; and adjusting an original playback speed of a corresponding video segment in the video to be played according to the characteristic information; Video to play

Each frame in the adjusted corresponding video segment corresponds to at least two timestamps, and at least two of the timestamps include a timestamp corresponding to the original playback speed and a timestamp corresponding to the adjusted original playback speed.
The device according to claim 24, wherein:

The processor is specifically configured to store the adjusted to-be-played video.
The device according to claim 24, wherein:

The processor is specifically configured to acquire characteristic information of the video to be played during a shooting process of the video to be played.
The device according to claim 26, wherein:

The processor is specifically configured to, when a playback trigger event for the video to be played is detected, play the adjusted video to be played according to a timestamp corresponding to the adjusted original playback speed.
The device according to claim 26, wherein:

The processor is specifically configured to play the adjusted to-be-played video according to a user operation instruction when a playback trigger event for the to-be-played video is detected, and the user operation instruction is used to indicate the adjusted Play speed mode of the video to be played.
The device according to claim 26, wherein:

The processor is specifically configured to prompt selection information for a playback speed mode of the adjusted to-be-played video when a playback trigger event for the to-be-played video is detected; and receive a user-input based on the selection information. Selecting an instruction to determine a target timestamp among at least two of the timestamps; and playing the adjusted to-be-played video according to the target timestamp.
The device according to claim 24, wherein:

The processor is specifically configured to obtain characteristic information of the to-be-played video when a playback trigger event for the to-be-played video is detected; and play the according to a timestamp corresponding to the adjusted original playback speed. The adjusted to-be-played video.
The device according to claim 30, wherein:

The processor is further configured to record feature information of the video to be played during a shooting process of the video to be played.
The device according to any one of claims 24 to 31, wherein

The processor is specifically configured to adjust an original playback speed of a corresponding video segment in the video to be played according to the characteristic information when a playback speed mode of the video to be played is a speed-adjusted playback mode or a speed-selective playback mode.
The device according to claim 32, wherein the characteristic information includes associated motion data when shooting the video to be played, interest flag information input by a user for the video to be played, and content of the video to be played At least one of the messages.
The device according to claim 33, wherein a priority of the interest mark information is higher than a priority of the associated motion data and the content information.
The device according to claim 33, wherein the associated motion data comprises acceleration data in one or more directions of the photographing device and / or a carrier of the photographing device and / or a mount of the photographing device And / or angular velocity data, the shooting device is used to shoot the video to be played;

The processor is specifically configured to accelerate the original playback speed of the corresponding video segment in the video to be played if the acceleration data is less than a first threshold and / or the angular acceleration data is less than a second threshold; if the acceleration data is greater than If the third threshold and / or angular acceleration data is greater than the fourth threshold, the original playback speed of the corresponding video segment in the video to be played is slowed down.
The device according to claim 33, wherein the interest mark information is used to indicate the degree of interest of the user, and the interest mark information is recorded during a shooting process of the video to be played or is recorded in the video. Recorded during the historical playback of the video to be played;

The processor is specifically configured to speed up the original playback speed of the corresponding video segment in the video to be played if the interest mark information meets the first condition; if the interest mark information meets the second condition, slow down all Describes the original playback speed of the corresponding video clip in the video to be played.
The device according to claim 36, wherein:

The processor is further configured to display the interest mark information during the playing process of the video to be played.
The device according to claim 37, wherein:

The processor is specifically configured to display the interest mark information on a playback progress bar of the video to be played.
The device according to claim 38, wherein:

The processor is further configured to receive a re-editing instruction for the interest mark information during the playback of the video to be played; edit the interest mark information according to the re-edit instruction; and according to the edited information. The interest mark information adjusts a current playback speed of a corresponding video segment in the video to be played.
The apparatus according to claim 33, wherein the content information includes motion characteristic information of a target object in the video to be played, and the motion characteristic information includes at least motion posture information of the target object;

The processor is further configured to determine a motion scene in the video to be played;

The processor is specifically configured to determine a motion state of the target object in the motion scene according to the motion feature information; and accelerate or slow down the original of a corresponding video segment in the video to be played according to the motion state. Play speed.
The device according to claim 40, wherein:

The processor is specifically configured to receive user input information for a sports scene; and determine a sports scene in the video to be played according to the input information.
The device according to claim 40, wherein:

The processor is specifically configured to match image features in the video to be played with image features in a preset motion scene; and determine a motion scene in the video to be played according to a matching result.
The device according to claim 33, wherein the content information includes environmental information in the video to be played, and the environmental information includes environmental brightness;

The processor is specifically configured to speed up or slow down the original playback speed of a corresponding video segment in the video to be played according to a first preset rule if the ambient brightness is less than a fifth threshold; if the ambient brightness is greater than the first threshold, Six thresholds, according to the second preset rule, speed up or slow down the original playback speed of the corresponding video clip in the video to be played.
The apparatus according to claim 33, wherein the content information includes a video scene in the video to be played;

The processor is specifically configured to slow the original playback speed of the corresponding video clip in the video to be played if the video scene is a scene that changes drastically; The original playback speed of the corresponding video clip in the playback video.
The device according to claim 33, wherein:

The processor is specifically configured to detect a content difference between a first image frame and a second image frame in the video to be played according to the content information, and an interval between the first image frame and the second image frame A preset number of image frames; if the content difference is greater than a seventh threshold, the video scene determined according to the first image frame and the second image frame is a drastically changing scene, and slows down the waiting The original playback speed of the corresponding video segment in the playback video; if the content difference is less than the eighth threshold, the video scene determined according to the first image frame and the second image frame is a slowly changing scene, and the Describes the original playback speed of the corresponding video clip in the video to be played.
The device according to claim 45, wherein the content difference includes a feature between a foreground image and a background image of the first frame image relative to a foreground image and a background image of the second frame image Changes in characteristics.
A sports camera, comprising: a video playback speed control device according to any one of claims 24-46.
A computer-readable storage medium, characterized in that:

A computer program is stored on a computer-readable storage medium, and when the computer program is executed by a processor, the method for controlling a video playback speed according to any one of claims 1 to 23 is executed.