WO2020172809A1

WO2020172809A1 - Method for video playback by photography apparatus and photography apparatus

Info

Publication number: WO2020172809A1
Application number: PCT/CN2019/076277
Authority: WO
Inventors: 马骏
Original assignee: 深圳市大疆创新科技有限公司
Priority date: 2019-02-27
Filing date: 2019-02-27
Publication date: 2020-09-03
Also published as: CN111279688A; CN114245219A

Abstract

A method for video playback by a photography apparatus and a photography apparatus. The method comprises: obtaining at least two video streams of a same target object by means of a recording device, the at least two video streams comprising a first video stream and a second video stream, and the resolution of the first video stream being greater than that of the second video stream; storing the first video stream and the second video stream in a storage device; and during video playback, selecting one of the first video stream and the second video stream for playback by means of the display of a photography apparatus. According to the present invention, two video streams having different resolutions are stored in a storage device, and during video playback, one of the video streams can be selected for playback according to actual situations, thereby reducing playback energy consumption and the requirements for the playback performance of a photography apparatus, thus further reducing the equipment costs of the photography apparatus.

Description

Video playback method of shooting device and shooting device

Technical field

The present invention relates to the field of video playback, in particular to a video playback method of a shooting device and a shooting device.

Background technique

In related technologies, the camera only stores one high-resolution video stream with a higher resolution. Generally, due to the portability requirements of the shooting device, the display resolution of the display of the shooting device is designed to be smaller, and the display resolution of the general display is smaller than the resolution of the high-definition video stream. During local video playback, the display resolution of the monitor is relatively small, so that high-resolution video streams cannot obtain high-resolution display effects. Moreover, since a display is required to play back high-resolution video streams, high energy consumption is inevitably required, which not only causes a waste of energy consumption, but also requires high performance of the shooting device.

Summary of the invention

The invention provides a video playback method of a shooting device and a shooting device.

Specifically, the present invention is implemented through the following technical solutions:

According to a first aspect of the present invention, there is provided a video playback method of a shooting device, the shooting device including a video recording device, a storage device, and a display, and the method includes:

Obtain at least two video streams of the same target object through the recording device, at least two of the video streams include a first video stream and a second video stream, and the resolution of the first video stream is greater than that of the second video stream Resolution

Storing the first video stream and the second video stream in the storage device;

During video playback, one video stream is selected from the first video stream and the second video stream to be played back through the display of the shooting device.

According to a second aspect of the present invention, there is provided a photographing device including a recording device, a storage device, a display, and a controller, wherein the recording device, the storage device and the display are respectively connected to the control Device communication; the controller is used for:

During video playback, a video stream is selected from the first video stream and the second video stream to be played back through the display of the shooting device.

It can be seen from the technical solutions provided by the above embodiments of the present invention that the present invention stores two video streams with different resolutions in a storage device. During video playback, the selection can be made according to the actual display resolution of the display of the camera. One of the video streams is played back, thereby reducing playback energy consumption and reducing the requirements for the playback performance of the shooting device, thereby reducing the equipment cost of the shooting device.

Description of the drawings

In order to more clearly describe the technical solutions in the embodiments of the present invention, the following will briefly introduce the accompanying drawings used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative labor.

Figure 1 is a system block diagram of a photographing device in an embodiment of the present invention;

Fig. 2 is a system block diagram of a photographing device in a specific embodiment of the present invention;

3 is a method flowchart of a video playback method of a shooting device in an embodiment of the present invention;

FIG. 4 is a usage scene diagram of the photographing device in an embodiment of the present invention;

Fig. 5 is a usage scene diagram of a photographing device in another embodiment of the present invention;

Fig. 6 is a usage scene diagram of a photographing device in another embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

The existing camera only stores one high-definition video stream, and usually the display resolution of the display of the camera is lower than the resolution of the high-definition video stream. This leads to the fact that when the video is played back, the high-resolution video is stored. Streaming, but it cannot obtain high-resolution display effects; and high-definition video streams increase the performance requirements of the shooting device, thereby increasing the equipment cost of the shooting device.

For this, the embodiment of the present invention stores two video streams with different resolutions in the storage device. During video playback, one of the video streams can be selected for playback according to the actual display resolution of the display of the camera. Therefore, the playback energy consumption is reduced, and the requirements for the playback performance of the shooting device are reduced, thereby reducing the equipment cost of the shooting device.

The video playback method and the shooting device of the shooting device of the present invention will be described in detail below with reference to the accompanying drawings. In the case of no conflict, the following embodiments and features in the implementation can be combined with each other.

FIG. 1 is a system block diagram of a photographing device in an embodiment of the present invention. Referring to FIG. 1, the photographing device in this embodiment may include a video recording device, a storage device, and a display. Among them, the video recording device of this embodiment can directly or indirectly communicate with the storage device, and the storage device can directly or indirectly communicate with the display. In the embodiment shown in FIG. 2, the video recording device, the storage device, and the display can respectively communicate with the same controller, thereby realizing indirect communication between the video recording device and the storage device, and the storage device and the display. It should be noted that the arrow flow directions in Figs. 1 and 2 both indicate the flow direction of the video stream. In fact, there may be other data links between the video recording device, the storage device, the display, and the controller.

The video recording device of this embodiment is used to collect at least two video streams of the same target object, that is, the video recording device includes at least two image collection modules, and the resolutions of the video streams collected by the at least two image collection modules are different.

After obtaining at least two video streams of the same target object, the video recording device can directly or indirectly store all or part of the video streams of the at least two video streams in the storage device. When the video recording device stores part of the video streams in the storage device , The video stream stored in the storage device includes at least two channels. Wherein, the at least two video streams stored in the storage device may be encoded video streams. The storage device in this embodiment may be a built-in storage device such as a memory unit, or an external storage device such as an SD card, U disk, or mobile hard disk. Among them, the built-in storage device is provided inside the camera, which cannot be separated from the camera alone. The external storage device can be detachably set on the shooting device. For example, the external storage device is an SD card or U disk, and the shooting device includes a slot. The SD card or U disk can be detachably inserted into the slot; The storage device is a mobile hard disk, and the photographing device includes a signal interface, and the mobile hard disk and the signal interface are detachably connected through a wire. The external storage device can be separated from the camera, and the data information in the external storage device can be read through other equipment.

The monitor can be used to display the video stream collected by the video recording device in real time (the video stream can be an unencoded video stream that can be adapted to the display resolution size of the monitor) for the user to preview, or, during video playback, The display is used to display a video stream stored in the storage device.

Optionally, the shooting device may further include a playback module. When the display displays the video stream collected by the recording device in real time, the playback module can convert one of the at least two video streams collected by the recording device into a display signal. The display of the camera device converts the display signal into a light signal for display. During video playback, the playback device obtains a video stream stored in the storage device from the storage device, converts the video stream into a display signal, and then the display signal of the shooting device converts the display signal into an optical signal for display.

FIG. 3 is a method flowchart of a video playback method of a photographing device in an embodiment of the present invention. As shown in FIG. 3, the video playback method of the photographing device may include the following steps:

S301: Obtain at least two video streams of the same target object through a video recording device, the at least two video streams include a first video stream and a second video stream, and the resolution of the first video stream is greater than the resolution of the second video stream;

Among them, each video stream is collected by the corresponding image collection module. For example, the video recording device can acquire two video streams, namely the first video stream and the second video stream. The video recording device of this embodiment includes a first image acquisition module and a second image acquisition module. At the same time, the first image The acquisition module acquires the first video stream, and acquires the second video stream through the second image acquisition module. For another example, the video recording device can obtain three video streams, namely the first video stream, the second video stream, and the third video stream. The video recording device of this embodiment may include a first image acquisition module, a second image acquisition module, and a third video stream. Three image acquisition modules, at the same time, can acquire the first video stream through the first image acquisition module, acquire the second video stream through the second image acquisition module, and acquire the third video stream through the third image acquisition module.

In this embodiment, the resolution of the first video stream is set by the user, and the resolution of the second video stream is a fixed size. The way for the user to set the resolution of the first video stream can be selected as needed. Optionally, the user can set the resolution of the first video stream by operating the corresponding button/knob of the camera; optionally, the user can operate The external control device sets the resolution of the first video stream. Of course, the user can also set the resolution of the first video stream through other operation modes, such as touch, gesture, voice, etc. Wherein, the external control device may be a remote control or a control terminal that controls the shooting of the camera. The control terminal may be a mobile terminal such as a mobile phone or a Pad, or other terminal equipment.

Further optionally, the resolution of the second video stream is determined based on the display resolution of the display, the second video stream matching the display resolution of the display is stored, and the second video can be selected when the video stream is played back Stream playback, which can reduce playback energy consumption.

Optionally, the resolution of the first video stream is 4K, and the resolution of the second video stream is 720P. Optionally, the resolution of the first video stream is 4K, and the resolution of the second video stream is 1080P. It can be understood that the resolution of the first video stream and the resolution of the second video stream may also be other numerical values, and are not limited to the numerical values listed above.

With reference to Figures 4 and 5, the photographing device of this embodiment can also communicate with an external display device. Optionally, the photographing device may further include a transmission module that can transmit one video of at least two video streams collected by the recording device. Streaming to an external display device, the external display device can display the received video stream, which is convenient for users to watch.

As a feasible implementation manner, referring to FIG. 4, the video recording device can obtain two video streams, that is, the first video stream and the second video stream. After the shooting device obtains at least two video streams of the same target object through the video recording device, it also sends a second video stream to the external display device. Optionally, after acquiring at least two video streams of the same target object through the recording device, the second video stream is encoded before the second video stream is sent to the external display device. The transmission module of this implementation manner sends the encoded second video stream to the external display device.

As another feasible implementation manner, referring to Figure 5, the video recording device can obtain three video streams. In this implementation manner, at least two video streams include a third video stream and a third video stream. Video streaming. After the shooting device obtains at least two video streams of the same target object through the video recording device, it also sends a third video stream to the external display device, wherein the resolution of the third video stream matches the display resolution of the external display device.

In some embodiments, the resolution of the third video stream is a fixed size.

In other embodiments, the resolution of the third video stream is set by the user. Optionally, the user adjusts the resolution of the third video stream according to the display resolution of the current external display device. Specifically, before sending the third video stream to the external display device, the camera will receive the resolution adjustment signal sent by the external control device; and adjust the resolution of the third video stream and the display of the external display device according to the resolution adjustment signal. Resolution matching. Optionally, in an embodiment, the photographing device is a sports camera, and the external control device is a remote controller that controls the operation of the sports camera. During the shooting process of the sports camera, if the external display device changes and the display resolution of the new external display device is different from the display resolution of the external display device before the conversion, the user can operate the remote control to display the new external display The display resolution of the device or the difference between the display resolution of the new external display device and the display resolution of the external display device before the conversion is sent to the shooting device through the resolution adjustment signal, so that the shooting device can adjust the signal according to the resolution adjustment signal. The resolution of the third video stream matches the display resolution of the new external display device. In another embodiment, the photographing device is an aerial photography drone, and the display is set on the aerial photography drone during the aerial photography mission. After the aerial photography drone ends the aerial photography task, the video stream in the storage device can be played back through the display. The external control device is the remote control that controls the operation of the aerial photography drone. When the aerial photography drone is performing the aerial photography task, if the external display device is changed, and the display resolution of the new external display device is the same as that of the external display device before the change If the resolution is different, the user can adjust the display resolution of the new external display device or the difference between the display resolution of the new external display device and the display resolution of the external display device before conversion by operating the remote control. The signal is sent to the camera, so that the camera can adjust the signal according to the resolution, and adjust the resolution of the third video stream to match the display resolution of the new external display device. Of course, it can be understood that, in addition to the sports camera or aerial drone described above, the shooting device may also be other electronic equipment with a shooting function, which is not specifically limited here.

Optionally, after acquiring at least two video streams of the same target object through the video recording device, the third video stream is encoded before the third video stream is sent to the external display device. The transmission module of this implementation manner sends the encoded third video stream to the external display device.

It can be understood that, in the above-mentioned embodiment, the encoding method of the second video stream or the third video stream of the shooting device may be an existing encoding method, which is not described in detail in the invention.

In addition, the external display device in the foregoing embodiment may be a mobile terminal such as a mobile phone, a Pad, or other terminal devices.

S302: Store the first video stream and the second video stream in a storage device;

In this embodiment, the storage device can directly or indirectly store the first video stream and the second video stream in the storage device after acquiring the first video stream and the second video stream. As in the foregoing embodiment, the storage device may be a built-in storage device of the camera, or an external storage device of the camera.

S303: During video playback, select one video stream from the first video stream and the second video stream to be played back through the display of the shooting device.

During video playback, the shooting device may adopt different strategies to select one video stream from the first video stream and the second video stream for playback.

In one embodiment, the video stream to be played back is matched according to the display resolution size of the display of the photographing device, thereby reducing playback energy consumption as much as possible, and reducing the requirements for the playback performance of the photographing device. The specific implementation process of S303 may include: according to the display resolution of the display of the shooting device, selecting a video stream from the first video stream and the second video stream to play back through the display of the shooting device. Optionally, if the display resolution of the display of the camera is less than or equal to the resolution of the second video stream, the second video stream is played back through the display of the camera to reduce playback energy consumption; if the display resolution of the display of the camera is If the rate is greater than the resolution of the second video stream, the first video stream is played back through the display of the shooting device to obtain a better display effect.

In another embodiment, the video stream to be played back is matched according to the battery power of the camera (the real-time battery power of the camera). The specific implementation process of S303 may include: according to the battery power of the shooting device, selecting a video stream from the first video stream and the second video stream to play back through the display of the shooting device. Optionally, if the battery power of the camera is higher than or equal to the preset power, the first video stream is played back through the display of the camera, so that when the display resolution of the display of the camera is greater than the resolution of the second video stream, A better display effect can be obtained; if the battery power of the shooting device is lower than the preset power, the second video stream is played back through the display of the shooting device, thereby reducing the power consumption speed during playback and extending the playback time.

Among them, the preset power amount may be a fixed amount or a value that is updated and changed in real time.

As a feasible implementation manner, the preset power level may be a fixed size, for example, the preset power level is an empirical value, or the preset power level is the minimum power required to play back the first video stream.

As another feasible implementation manner, the preset power amount is a value that is updated and changed in real time, and the change manner of the preset power amount depends on the size of the video stream. Optionally, the preset power is determined according to the power required to play back the first video stream or the power required to play back the second video stream, for example, when the battery power of the camera is greater than or equal to the minimum power required to play back the first video stream When the preset power is the minimum power required to play back the first video stream; when the battery power of the camera is less than the minimum power required to play back the first video stream, the preset power is 0. Optionally, the preset power level is determined according to other strategies, for example, the preset power level is determined according to the expected playback duration, where the expected playback duration is set by the user.

Of course, it can be understood that when one of the first video stream and the second video stream is selected for playback through the display of the shooting device, the video playback strategy of the shooting device can also adopt other strategies in addition to the two strategies described above. The actual situation of the shooting device performs corresponding video playback to meet the requirements of lower power consumption or better display effect of the video playback of the shooting device.

In the following embodiments, matching the video stream to be played back according to the display resolution of the camera's display is called video playback strategy 1, and matching the video stream to be played back according to the battery power of the shooting device is called video playback Strategy 2. If the shooting device has both video playback strategy 1 and video playback strategy 2, in order to avoid conflicts when the shooting device performs video playback, in one embodiment, the shooting device requires the user to perform video playback Select the video playback strategy for the current video playback. If the user selects video playback strategy 1 as the video playback strategy for the current video playback, the camera will match the video stream to be played back according to the display resolution of the camera’s display; if The user selects video playback strategy 2 as the video playback strategy for the current video playback, and the camera will match the video stream to be played back according to the battery power of the camera.

In another embodiment, the priority of two video playback strategies can be set so that the camera uses one of the video playback strategies to match the video stream to be played back during video playback, thereby avoiding the camera from performing video playback There is a conflict. As a feasible implementation method, the priority of video playback strategy 1 is higher than the priority of video playback strategy 2, then when the shooting device is performing video playback, the shooting device matches the display resolution size of the display of the shooting device to be played back Video stream. As another feasible implementation manner, when the battery power of the camera is greater than or equal to a specific power, the priority of video playback strategy 1 is higher than the priority of video playback strategy 2; when the battery of the camera is less than the specific power, The priority of video playback strategy 1 is lower than the priority of video playback strategy 2. That is, when the battery power of the shooting device is greater than or equal to a specific power, the shooting device matches the video stream to be played back according to the display resolution of the display of the shooting device; when the battery power of the shooting device is less than the specific power, the shooting device Battery power to match the video stream to be played back. The specific power can be an empirical value, or the specific power can be set by the user. Of course, the method for setting the priority of the video playback strategy of the camera is not limited to the above two methods, and the priority of the video playback strategy of the camera can also be set by other methods.

In another embodiment, the above two video playback strategies can be combined to match the video stream to be played back, so as to fit the current actual situation of the shooting device as much as possible to achieve a better playback effect. For example, when the display resolution of the display of the camera is greater than that of the second video stream, and the battery power of the camera is higher than or equal to the preset power, the first video stream can be played back through the display of the camera. After the power is lower than the preset power, the second video stream can be played back through the display of the camera.

In one of the embodiments, after matching the video stream A to be played back according to the battery power of the camera (the real-time battery power of the camera), if the display resolution of the display is greater than the resolution of the selected video stream A, the storage device There is a video stream B with a higher resolution than video stream A and the acquired target object is the same as video stream A. During the playback of video stream A, the playback of video stream A can be based on the user's operation on the shooting device. Switch to the playback of video stream B to meet the needs of users for better display effects.

In one of the embodiments, during video playback, when the shooting device selects one of the first video stream and the second video stream for playback, it may not display both the first video stream and the second video stream. In order to reduce the interference to the user's choice, and help to meet the low power consumption or display effect requirements of the camera as much as possible. In this way, the specific implementation process of S303 may include:

1) Display the first video stream on the playback interface of the display of the camera;

In this step, the first video stream captured by the video recording device is displayed on the playback interface. That is, the second video stream may not be displayed. In this way, the user does not need to choose between the first video stream and the second video stream.

2) When receiving a video playback instruction for the first video stream, select a video stream from the first video stream and the second video stream to playback through the display of the shooting device.

In this embodiment, when the shooting device receives a video playback instruction for the first video stream, it will play back one of the video streams through the display of the shooting device. That is, even if it is a video playback instruction for the first video stream, the second video stream can be selected as the video stream to be played back, and the second video stream can be played back. Among them, the video playback instruction can be generated by the user by operating the corresponding button/knob of the shooting device, or by the user by operating an external control device. Of course, the video playback instruction can also be generated by the user through other operation methods, such as touch, gesture, voice, etc.

In one embodiment, referring to FIG. 6, the imaging device is a first imaging device, and the storage device includes an external storage device of the first imaging device. When the external storage device is set on the second camera, the video stream in the external storage device is played back through the display of the second camera. Wherein, the video playback strategy of the second camera for the video stream in the external storage device is the same as the video playback strategy of the first camera. That is, the video stream in the external storage device can be played back through the display of the first camera or the display of the second camera. Among them, the first camera and the second camera can be two versions of the camera of the same series of products of the same manufacturer, so as to have the same video playback strategy. Furthermore, the first camera and the second camera can have the same video recording strategy and storage strategy, that is, the second camera can also collect at least two video streams with different resolutions for storage. The video playback strategy of the video stream in the external storage device in the second shooting device can refer to the foregoing embodiment, which will not be repeated here.

Optionally, the display resolution of the display of the first camera is less than or equal to the resolution of the second video stream, and the display resolution of the display of the second camera is greater than the resolution of the second video stream. If the external storage device is set on the first camera, during video playback, the display of the first camera will play back the second video stream in the external storage device; if the external storage device is set on the second camera On the device, the display of the second camera plays back the first video stream in the external storage device. Corresponding to the video playback method of the shooting device in the foregoing embodiment, the present invention also provides a shooting device. Referring to FIG. 2, the shooting device further includes a controller, wherein the video recording device, the storage device, and the display communicate with the controller respectively.

Specifically, the controller is configured to: obtain at least two video streams of the same target object through a video recording device, the at least two video streams include a first video stream and a second video stream, and the resolution of the first video stream is greater than that of the second video stream Resolution; store the first video stream and the second video stream in the storage device; during video playback, select a video stream from the first video stream and the second video stream to playback through the display of the shooting device.

For the implementation process and working principle of the controller, please refer to the description of the video playback method of the shooting device in the foregoing embodiment, which will not be repeated here.

The controller in this embodiment may be a central processing unit (CPU). The controller may further include a hardware chip. The aforementioned hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD) or a combination thereof. The aforementioned PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a general array logic (generic array logic, GAL) or any combination thereof.

In addition, an embodiment of the present invention also provides a computer-readable storage medium on which a computer program is stored, and when the program is executed by a controller, the steps of the video playback method of the photographing device in the foregoing embodiment are implemented.

A person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be implemented by instructing relevant hardware through a computer program. The program can be stored in a computer readable storage medium. During execution, it may include the procedures of the above-mentioned method embodiments. Wherein, the storage medium may be a magnetic disk, an optical disc, a read-only memory (Read-Only Memory, ROM), or a random access memory (Random Access Memory, RAM), etc.

The above-disclosed are only some embodiments of the present invention, which of course cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope of the present invention.

Claims

A video playback method for a shooting device, wherein the shooting device includes a video recording device, a storage device, and a display, and the method includes:

Obtain at least two video streams of the same target object through the recording device, at least two of the video streams include a first video stream and a second video stream, and the resolution of the first video stream is greater than that of the second video stream Resolution

Storing the first video stream and the second video stream in the storage device;

During video playback, one video stream is selected from the first video stream and the second video stream to be played back through the display of the shooting device.
The method according to claim 1, wherein, during video playback, selecting a video stream from the first video stream and the second video stream to playback through the display of the shooting device comprises :

Displaying the first video stream on the playback interface of the display of the photographing device;

When a video playback instruction for the first video stream is received, a video stream is selected from the first video stream and the second video stream to be played back through the display of the shooting device.
The method according to claim 1, wherein the selecting a video stream from the first video stream and the second video stream to play back through the display of the shooting device comprises:

According to the display resolution of the display of the photographing device, a video stream is selected from the first video stream and the second video stream to be played back through the display of the photographing device.
The method according to claim 3, wherein the first video stream and the second video stream are selected according to the display resolution of the display of the photographing device. The display playback of the camera includes:

If the display resolution of the display of the photographing device is less than or equal to the resolution of the second video stream, playing back the second video stream through the display of the photographing device;

If the display resolution of the display of the photographing device is greater than the resolution of the second video stream, the first video stream is played back through the display of the photographing device.
The method according to claim 1, wherein the selecting a video stream from the first video stream and the second video stream to play back through the display of the shooting device comprises:

According to the battery power of the shooting device, a video stream is selected from the first video stream and the second video stream to be played back through the display of the shooting device.
The method according to claim 5, wherein the selecting a video stream from the first video stream and the second video stream to play back through the display according to the battery power of the shooting device comprises :

If the battery level of the shooting device is higher than or equal to the preset power level, playing back the first video stream through the display of the shooting device;

If the battery level of the shooting device is lower than the preset power level, the second video stream is played back through the display of the shooting device.
The method according to claim 6, wherein the preset power is determined according to the power required to play back the first video stream or the power required to play back the second video stream.
The method according to claim 1, wherein the resolution of the first video stream is set by a user, and the resolution of the second video stream is a fixed size.
The method according to claim 8, wherein the resolution of the second video stream is determined based on the size of the display resolution of the display.
The method according to claim 1, wherein the photographing device is a first photographing device, and the storage device comprises an external storage device of the first photographing device;

When the external storage device is set on the second camera, the video stream in the external storage device is played back through the display of the second camera;

Wherein, the video playback strategy of the second camera for the video stream in the external storage device is the same as the video playback strategy of the first camera.
The method according to claim 10, wherein the display resolution of the display of the first camera is less than or equal to the resolution of the second video stream;

The display resolution of the display of the second camera is greater than the resolution of the second video stream.
The method according to claim 1, characterized in that, after obtaining at least two video streams of the same target object through the recording device, the method further comprises:

Sending the second video stream to an external display device.
The method according to claim 1, wherein at least two of the video streams further include a third video stream;

After acquiring at least two video streams of the same target object through the recording device, the method further includes:

Sending the third video stream to an external display device, and the resolution of the third video stream matches the display resolution of the external display device.
The method according to claim 13, wherein before the sending the third video stream to an external display device, the method further comprises:

Receiving a resolution adjustment signal sent by the external control device;

According to the resolution adjustment signal, adjusting the resolution of the third video stream to match the display resolution of the external display device.
The method according to claim 13, wherein the external control device is a remote control or a control terminal that controls the shooting device to shoot.
A photographing device, characterized in that the photographing device comprises a video recording device, a storage device, a display and a controller, wherein the video recording device, the storage device and the display communicate with the controller respectively; the The controller is configured to: obtain at least two video streams of the same target object through the video recording device, the at least two video streams include a first video stream and a second video stream, and the resolution of the first video stream is greater than that of the The resolution of the second video stream;

Storing the first video stream and the second video stream in the storage device;

During video playback, one video stream is selected from the first video stream and the second video stream to be played back through the display of the shooting device.
The photographing device according to claim 16, wherein the controller is specifically configured to: display the first video stream on a playback interface of a display of the photographing device;

When a video playback instruction for the first video stream is received, a video stream is selected from the first video stream and the second video stream to be played back through the display of the shooting device.
The photographing device according to claim 16, wherein the controller is specifically configured to: according to the display resolution of the display of the photographing device, in the first video stream and the second video stream A video stream is selected for playback through the display of the shooting device.
The photographing device according to claim 18, wherein the controller is specifically configured to: if the display resolution of the display of the photographing device is less than or equal to the resolution of the second video stream, pass the The display of the photographing device plays back the second video stream;

If the display resolution of the display of the photographing device is greater than the resolution of the second video stream, the first video stream is played back through the display of the photographing device.
The shooting device according to claim 16, wherein the controller is specifically configured to select a video stream from the first video stream and the second video stream according to the battery power of the shooting device Play back through the display of the camera.
22. The photographing device according to claim 20, wherein the controller is specifically configured to: if the battery power of the photographing device is higher than or equal to a preset power, replaying the second battery through a display of the photographing device A video stream;

If the battery level of the shooting device is lower than the preset power level, the second video stream is played back through the display of the shooting device.
The photographing device according to claim 21, wherein the preset power level is determined according to the power required for playing back the first video stream or the power required for playing back the second video stream.
The photographing device according to claim 16, wherein the resolution of the first video stream is set by a user, and the resolution of the second video stream is a fixed size.
The photographing device according to claim 23, wherein the resolution of the second video stream is determined based on the size of the display resolution of the display.
The photographing device according to claim 16, wherein the photographing device is a first photographing device, and the storage device comprises an external storage device of the first photographing device;

When the external storage device is set on the second camera, the video stream in the external storage device is played back through the display of the second camera;

Wherein, the video playback strategy of the second camera for the video stream in the external storage device is the same as the video playback strategy of the first camera.
The photographing device according to claim 25, wherein the display resolution of the display of the first photographing device is less than or equal to the resolution of the second video stream;

The display resolution of the display of the second camera is greater than the resolution of the second video stream.
The photographing device according to claim 16, wherein the controller is specifically configured to:

After acquiring at least two video streams of the same target object through the recording device, sending the second video stream to an external display device.
The shooting device according to claim 16, wherein at least two of the video streams further include a third video stream;

The controller is specifically configured to: after the recording device acquires at least two video streams of the same target object, send the third video stream to an external display device, and the resolution of the third video stream is the same as that of the external display device. The display resolution of the display device matches.
The photographing apparatus according to claim 28, wherein the controller is specifically configured to: before sending the third video stream to an external display device, receive a resolution adjustment signal sent by the external control device;

And according to the resolution adjustment signal, the resolution of the third video stream is adjusted to match the display resolution of the external display device.
The photographing device according to claim 28, wherein the external control device is a remote control or a control terminal that controls the photographing of the photographing device.