JP2018170773A - Video reproducing apparatus, control method of the same, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a user to intuitively select and reproduce a video picked up by an image pickup apparatus installed at a desired place among videos picked up by a plurality of image pickup apparatuses.SOLUTION: A reproducing apparatus 102, while acquiring and reproducing videos captured by a camera 501, which is one of a large number of image capturing apparatuses 103, and when there is a touch panel operation by a user who changes videos to be reproduced, measures the change of a position where the user touched a touch panel and transmits movement information corresponding to the measured change to a management apparatus 101. Thereafter, the reproducing apparatus newly acquires and reproduces videos captured by a camera 505, which is another one of the plurality of image capturing apparatuses 103 selected by the management apparatus 101 according to the movement information.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a video playback apparatus capable of playing back a desired video from videos captured by a large number of imaging devices, a control method therefor, and a program.

  When a desired image is selected and reproduced from a plurality of images captured by a plurality of imaging devices, the number of images increases as the number of imaging devices increases, making it difficult to select the images themselves. For example, even if a list of all images captured by thousands to tens of thousands of imaging devices is displayed on the screen, the relationship between the images and the imaging location of each image cannot be immediately determined. It is difficult to make an instant selection.

  Therefore, an icon indicating the location of a plurality of mobile cameras is displayed on the map of the screen of the playback terminal, and the video captured by the camera corresponding to the icon is selected by selecting one of these icons. There is a display image switching device to be displayed (see Patent Document 1).

JP 2012-156571 A

  However, it is difficult for the above-described display image switching device to intuitively select and reproduce a desired video from a large number of videos.

  An object of the present invention is to provide a video playback apparatus capable of intuitively selecting and playing back a desired video from a large number of videos, a control method therefor, and a program.

  In order to achieve the above object, an image reproduction apparatus according to one of the inventions according to the present application includes an acquisition unit that acquires an image obtained by an imaging process of a first imaging apparatus among a plurality of imaging apparatuses, and the acquisition Reproducing means for displaying and playing the displayed video on the display unit; receiving means for receiving an instruction to change the video displayed on the display unit in response to a user operation performed on the touch panel; Measuring means for measuring a change in position of the user touching the touch panel; and a transmission means for transmitting movement information corresponding to the measured change to an external device, and after transmission processing by the transmission means, The acquisition unit newly selects an image obtained by an imaging process of a second imaging device different from the first imaging device among the plurality of imaging devices selected by the external device according to the movement information. Acquired, the reproduction unit may be reproduced by displaying the newly acquired image on the display unit.

  According to the present invention, a large number of videos can be selected by switching the imaging device that captures the video based on the positional relationship of the imaging device and the operation on the video playback device that plays back the video captured by the imaging device. Therefore, a desired video can be intuitively selected and reproduced.

1 is a block diagram schematically showing a configuration of a video reproduction system according to an embodiment of the present invention. It is a block diagram which shows the internal structure of the management apparatus in FIG. It is a block diagram which shows the internal structure of the reproducing | regenerating apparatus in FIG. It is a block diagram which shows the internal structure of the imaging device in FIG. It is a figure used for demonstrating the positional relationship of each imaging device when many imaging devices of FIG. 4 are arrange | positioned in a large stadium, (A) is a large-scale with many imaging devices arranged. It is an overhead view of a stadium, (B) is a table | surface which shows the positional relationship of each imaging device. It is a flowchart which shows the procedure of the video reproduction process performed by the video reproduction system of FIG. It is a flowchart which shows the procedure of the modification of the image | video reproduction | regeneration processing of FIG. It is a flowchart which shows the procedure of the other modification of the image | video reproduction | regeneration processing of FIG. It is a figure used for demonstrating the movement information at the time of switching the imaging device of FIG. FIG. 4 is a diagram used for explaining a method of operating the playback apparatus of FIG. 3.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a block diagram schematically showing a configuration of a video reproduction system according to an embodiment of the present invention.

  A video playback system 100 in FIG. 1 includes a large number of imaging devices 103 and a playback device 102 (video playback device) that is operated by a user and plays back video captured by the imaging device 103. A large number of imaging devices 103 and playback devices 102 can communicate with each other via a management device 101 (external device).

  FIG. 2 is a block diagram showing an internal configuration of the management apparatus 101 in FIG.

  2, the management apparatus 101 includes a primary storage device 202, a secondary storage device 203, and a network device 204 that are connected to each other via a CPU 201. The CPU 201 controls the management device 101 and executes processing according to a program stored in the primary storage device 202. The primary storage device 202 can store temporary data and stores various control programs processed by the CPU 201. The secondary storage device 203 stores various control programs and setting information for controlling the playback device 102.

  The network device 204 is connected to an external device (not shown), and performs control commands and data communication with the external device. The connection with the external device may be performed directly by wired such as a USB (Universal Serial Bus) cable or wirelessly such as a wireless LAN, or may be performed via a network such as a server or the Internet. Further, for example, PTP (Picture Transfer Protocol) or MTP (Media Transfer Protocol) is used as a protocol for performing data communication.

  FIG. 3 is a block diagram showing an internal configuration of the playback apparatus 102 in FIG.

  In FIG. 3, the playback device 102 includes a primary storage device 302 and a secondary storage device 303, a display unit 304, an operation unit 305, an audio output unit 307, and a network device 306 that are connected to each other via a CPU 301.

  The primary storage device 302, the secondary storage device 303, and the network device 306 are the same devices as the primary storage device 202, the secondary storage device 203, and the network device 204 in the management device 101 of FIG.

  The CPU 301 performs various calculations in accordance with input signals and programs, and controls each part constituting the playback device 102. The display unit 304 includes a display device such as an LCD, and displays images and characters for guiding operations. The display unit 304 is not necessarily provided in the playback device 102, but in this case, the playback device 102 only needs to have a display control function for controlling display on the display unit of another playback device. The operation unit 305 includes, for example, a keyboard, a mouse, and a touch panel, and receives an operation from the user. The audio output unit 307 includes a speaker that outputs audio.

  FIG. 4 is a block diagram illustrating an internal configuration of the imaging apparatus 103 in FIG.

  In FIG. 4, the imaging device 103 includes a primary storage device 401, a recording medium 402, a CPU 403, an operation unit 404, an imaging element 405, a display unit 406, an optical system 407, an audio input device 408, a communication control device 409, and a secondary storage. It consists of device 410, which are connected to each other.

  The primary storage device 401 can store temporary data, and stores various control programs processed by the CPU 403. The recording medium 402 stores captured image data and the like. The recording medium 402 can be removed and can be loaded into a personal computer (hereinafter referred to as “PC”) or the like to read data. In other words, the recording medium 402 only needs to be able to access the imaging apparatus 103 and to store and read data from and to the recording medium 402.

  The CPU 403 performs various calculations and control of the components of the imaging device 103 in accordance with input signals and programs. The operation unit 404 includes buttons, a lever, and a touch panel for a user to instruct the imaging device 103 to perform an operation. The image sensor 405 converts light imaged through the optical system 407 into an image.

  A display unit 406 displays a viewfinder image at the time of imaging, a captured image, characters for guiding operations, and the like. The optical system 407 includes a lens, a shutter, and an aperture, and forms an image of light from the subject on the image sensor 405 with an appropriate amount and timing. The voice input device 408 inputs voice via a microphone or the like.

  The communication control device 409 is connected to an external device and transmits / receives control commands and data to / from the external device. The connection with the external device may be performed directly by wire such as a USB cable or wirelessly such as a wireless LAN, or may be performed via a network such as a server or the Internet. For example, PTP or MTP is used as a protocol for performing data communication. The secondary storage device 410 stores a program (firmware) for controlling the imaging device 103, various setting information, and the like.

  FIG. 5 is a diagram used to explain the relationship of the imaging positions of each imaging device when a large number of the imaging devices in FIG. 4 are arranged in a large-scale stadium, and FIG. It is an overhead view of the large-scale stadium arranged, (B) is a table | surface which shows the positional relationship of each imaging device.

  In FIG. 5, the large-scale stadium is a soccer stadium 500. Thousands to tens of thousands of fixed focal length imaging devices 103 are arranged in the soccer stadium 500, and all the imaging devices 103 are arranged to face the center of the soccer stadium 500. The positional relationship information 520 displays the positional relationship of each imaging device 103 as a list, and is stored in the secondary storage device 203 provided in the management device 101. As described above, the positional relationships of all the imaging devices 103 can be grasped from the positional relationship information 520.

  The positional relationship information 520 indicates that, for example, cameras 501 to 505 and 510 are arranged as the imaging device 103. In addition, the camera 502 (camera ID is ID_2) is arranged in the left direction of the camera 501 (camera ID is ID_1), and the camera 503 (camera ID is ID_3) is arranged in front of the camera 501. In addition, a camera 510 (camera ID is ID_100) is arranged at a point-symmetrical position of the camera 501 with respect to the center of the soccer stadium 500. Further, the positional relationship information 520 indicates that no imaging device 103 is disposed behind the camera 501.

  The positional relationship information 520 displays whether each camera can be used as a camera (hereinafter, referred to as “initial camera”) that captures an image that is initially displayed on the display unit 304 of the playback apparatus 102 in FIG. doing. Specifically, in the positional relationship information 520, a camera that can be used as the initial camera is indicated by “true” in the “initial camera” column, and a camera that cannot be used as the initial camera is displayed in the “initial camera” column. "False". This shows that only the camera 501 can be used as the initial camera.

  FIG. 6 is a flowchart showing the procedure of video playback processing executed by the video playback system of FIG.

  In FIG. 6, first, an application (video playback application) for playing back a video of the soccer stadium 500 is downloaded to the playback device 102 such as a smartphone or a tablet, and stored in the primary storage device 302 or the secondary storage device 303. The playback device 102 activates a video playback application in response to a user instruction (step S601). The playback device 102 requests the management device 101 for the first video to be displayed on the display unit 304 (step S602). The management apparatus 101 determines an initial camera based on the positional relationship information 520 and requests an image from the initial camera (step S603). In the following description, the initial camera is the camera 501.

  The camera 501 that has requested the video transmits the video data to the management apparatus 101 (step S604). Upon receiving the video, the management apparatus 101 transfers the video to the playback apparatus 102, and transmits ID_1, which is the ID of the camera 501, to the playback apparatus 102 (step S605). The playback device 102 plays back the received video (step S606). In step S605, since the management apparatus 101 transmits the ID of the initial camera as well as the video to the playback apparatus 102, the management apparatus 101 needs to store and manage the ID of the initial camera of each playback apparatus 102. It can be lost.

  Next, the playback device 102 receives a switching instruction for switching the video displayed on the display unit 304 in response to a user operation (step S610). The playback device 102 determines the position of the switching destination imaging device based on the user's operation (step S611). This determination is based on the imaging device before switching (hereinafter referred to as “reference camera”) as a reference, according to the user's operation, the direction of the switching destination camera and the number of imaging devices that pass through until reaching the switching destination camera ( Hereinafter, it is referred to as “movement information”). The movement information 900 is determined in advance in association with the type of operation performed by the user as shown in FIG. 9 and stored in the secondary storage device 203 of the management apparatus 101.

  The user operation of the present embodiment is, for example, a flick operation that moves the user so that the user touches the screen with a finger when the playback apparatus 102 is a tablet. In the flick operation, the playback device 102 measures the distance from when the user's finger touches the screen until it leaves. If the measured distance is longer than a predetermined value, the degree of operation is determined as “strong”, and if it is shorter, it is determined as “weak”. If the measured distance is shorter than a certain threshold, it is determined that another operation such as a tap operation is performed instead of a flick operation. In FIG. 9, when the user moves his / her finger to the right and performs a flick operation for a distance longer than a predetermined value, the image is switched to the image of the second imaging device in the left direction of the reference camera. In the present embodiment, since the first reference camera in the video reproduction process is the initial camera, the camera 501 is switched to the camera 505 by the above-described operation. In the above example, the number of imaging devices that move according to the distance of the flick operation is specified. However, the number of fingers in a pinch-in / pinch-out operation in which two fingers are placed on the screen to reduce / expand the interval. You may specify the number of the imaging devices which move by a movement distance etc.

  Returning to FIG. 6, the playback device 102 transmits the reference camera ID and the movement information determined in step S611 to the management device 101 (step S612). In the present embodiment, since the playback apparatus 102 has received the reference camera ID from the management apparatus 101 in step S605, the playback apparatus 102 can immediately transmit the reference camera ID to the management apparatus 101. Note that the playback device may transmit the ID of the reference camera every time the reference camera is changed. Since the playback apparatus 102 transmits not only the movement information of the reference camera but also the ID of the reference camera to the management apparatus, it is not necessary to grasp the reference camera of the management apparatus 101, thereby quickly selecting the switching destination imaging apparatus. it can.

  Next, the management apparatus 101 specifies the switching destination imaging apparatus based on the movement information and the positional relationship information 520 received from the playback apparatus 102 (step S613). For example, a case will be described in which movement information is received in which the ID of the reference camera is ID_1, the movement direction from the reference camera is the left direction, and the movement distance (the number of imaging devices) is two. ID_2 (camera 502) exists when the number of imaging devices moves one to the left of ID_1 (camera 501), and ID_5 (camera 505) when the number of imaging devices moves one to the left of ID_2 (camera 502). ) Can be confirmed from the positional relationship information 520. Therefore, it can be specified that the switching destination imaging apparatus 103 is the camera 505.

  The management apparatus 101 requests video from the cameras 501, 502, and 505 (step S614), and the cameras 501, 502, and 505 transmit video to the management apparatus 101 (step S615). The management apparatus 101 transmits the video received from the three cameras 501, 502, and 505 and the ID (ID_5) of the camera 505 that is the final switching destination to the playback apparatus 102 (step S616). Subsequently, the management apparatus 101 receives video from the camera 505 and transmits it to the playback apparatus 102. Also in step S616, as in step S605, since the management apparatus 101 transmits not only the video but also the switched camera ID to the playback apparatus 102, the management apparatus 101 stores the initial camera ID for management. The need to do this can be eliminated. The playback device 102 sequentially plays back the images captured by the cameras 501 and 502 received from the management device 101. After that, the playback device 102 continuously receives and plays back the video captured by the camera 505 from the management device 101 (step S617). Thereafter, when switching to a video imaged by another imaging device, the processing from step S606 is repeated. On the other hand, when it is not possible to switch to the video captured by another imaging apparatus or when the playback apparatus is turned off, this processing is terminated.

  When switching from the camera 501 to the camera 505 to play back images, the images from the cameras 501 to 505 are continuously played back. Specifically, from the state where the video of the camera 501 is being reproduced, both the video of the camera 501 and the video of the camera 502 are displayed. Next, the image of only the camera 502 is displayed. Next, the images of both the camera 502 and the camera 505 are displayed, and finally the image of only the camera 505 is reproduced. As described above, the playback apparatus 102 sequentially switches and plays back the videos of the cameras 501, 502, and 505. Therefore, even if the video of the camera 505 after the switching is slightly different from the video expected by the user, the user confirms the previous video from the video during the camera switching, so that the switching instruction again Can be easily performed (1001 to 1003 in FIG. 10A). At this time, the video may be switched and the audio may be switched at the same time.

  In addition to the switching of the imaging device by the flick operation described above, when the pinch-out operation (1011 to 1012 in FIG. 10B) is performed, the imaging device is switched to the imaging device positioned in front of the imaging device before the operation. It may be. Further, when a pinch-in operation (not shown) is performed, the imaging device may be switched to an imaging device located behind the imaging device before the operation. The pinch-in / pinch-out operation is similar to the zoom-in / zoom-out operation of the camera, and is an effective operation method when switching to the front and rear cameras.

  In addition, a flick operation from the lower part of the screen to the upper part (1021 to 1022 in FIG. 10C) is switched to the image pickup apparatus positioned in front of the image pickup apparatus that has picked up the image displayed immediately before the start of the operation. It may be. Further, a flick operation (not shown) from the upper part to the lower part of the screen may be switched to an image pickup apparatus located behind the image pickup apparatus that has picked up the image displayed immediately before the start of the operation.

  Furthermore, when the playback device 102 is rotated 180 degrees (1031 to 1032 in FIG. 10D), the imaging device can be switched to an imaging device at a point-symmetrical position with the center of the soccer stadium 500 as the center of symmetry.

  According to the processing in FIG. 6, the switching destination imaging device is specified based on the movement information and the positional relationship information 520 received from the playback device 102 (step S613). Therefore, it is possible to switch the video based on the operation content of the playback device by the user without selecting the imaging device, so that a desired video can be intuitively selected from a large number of videos and played back. In particular, the processing of FIG. 6 can reduce the burden on the user who selects a desired video as the number of imaging devices increases. In addition, since the positional relationship information 520 is stored in the management apparatus 101 in advance, this video reproduction process can be executed even if the user does not know the installation location and the number of installed imaging apparatuses.

  FIG. 7 is a flowchart showing the procedure of a modified example of the video reproduction process of FIG.

  In FIG. 7, processing similar to steps S610 to S613 in FIG. 6 is executed. In step S613, for example, from the playback device 102, the movement information from the playback device 102 is that the ID of the reference camera is ID_3, the movement direction from the reference camera is forward, and the number of imaging devices that pass through until reaching the switching destination camera is one. Assume that it has been received. However, since there is no imaging device in front of the camera ID_3 from the positional relationship information 520, the management device 101 determines that there is no switching destination imaging device 103 and determines that there is no switching destination imaging device in the playback device 102. Notification is made (step S705). The playback device 102 displays on the display unit 304 of the playback device 102 that there is no switching destination imaging device 103 (step S706), and ends this processing.

  Here, as a method of displaying that the imaging device 103 does not exist on the display unit 304 of the playback device 102, there is a method in which a video before operation is displayed after a black screen is once displayed (in FIG. 10E). 1041-1043). For example, if a flick operation is performed in the right direction while a video is being displayed on the playback device 102, the video is switched to the other imaging device 103, but a black screen is displayed once. It can be understood that it does not exist. Alternatively, a method of displaying “no camera” may be used. Thereby, the user can grasp that there is no imaging device 103 corresponding to the direction in which the video is to be switched.

  Further, when there is no imaging device in the direction in which switching is to be performed, switching to any one of the imaging devices 103 described in the positional relationship information 520 may be performed. For example, although there is no imaging device in front of the camera 503, when the user tries to switch the video in front of the camera 503, it can be set to switch to the camera 501 actually located behind the camera 503.

  According to the processing in FIG. 7, the playback device 102 displays on the display unit 304 of the playback device 102 that there is no switching destination imaging device 103 (step S706). It is possible to visually inform the user that there is no existing camera. As a result, the user can grasp that the imaging device 103 does not exist in the direction in which the video is to be switched, and can quickly move to an operation of selecting a video from the imaging device 103 in a different direction. .

  FIG. 8 is a flowchart showing the procedure of another modification of the video reproduction process of FIG.

  In FIG. 8, the same processing as steps S610 to S613 of FIG. 6 is executed, and the management apparatus 101 determines whether or not the audio data of the video imaged by the imaging apparatus 103 specified in step S613 can be used independently. A determination is made (step S805). If the imaging device 103 can use the audio data independently (YES in step S805), the imaging device 103 is requested for the audio data (step S807).

  Here, whether or not the imaging device 103 can use audio data independently is determined depending on whether the description of “audio data” in the positional relationship information 520 corresponds to “true” or “false”. In the case of “true”, the imaging apparatus 103 can use audio data, for example, the camera 503, and in the case of “false”, the imaging apparatus 103 cannot use audio data, for example, the camera 501 is applicable. To do.

  When the imaging device 103 cannot use audio data independently like the camera 501 (NO in step S805), the imaging device 103 is changed to one of the imaging devices 103 installed around the imaging device 103 ( Step S806). And it is discriminate | determined again whether the imaging device 103 after a change can use audio | voice data independently (step S805). In the following description, it is assumed that the imaging device 103 identified in step S613 is the camera 501 and the imaging device 103 that can use audio data independently is the camera 503.

  The management apparatus 101 requests the audio data of the camera 503 that has been determined that the audio data can be used independently in step S805 (step S807). The camera 503 transmits audio data to the management apparatus 101 (step S808), and the management apparatus 101 requests an image from the camera 501 specified in step S613 (step S809).

  The camera 501 transmits only video data to the management apparatus 101 (step S810). The management apparatus 101 transmits the video captured by the camera 501 and the audio acquired by the camera 503 to the playback apparatus 102 together with the ID of the camera 501 that is the camera after switching (step S811). The playback device 102 plays back the video captured by the camera 501 and the sound acquired by the camera 503 (step S812), and ends this process. Note that the audio data may be audio data obtained from a specific microphone or a specific camera.

  According to the processing in FIG. 8, the playback device 102 plays back the video captured by the camera 501 and the audio acquired by the camera 503 (step S812). Therefore, the video imaged by the camera 501 can be reproduced together with the audio from the camera 503 installed around the camera 501, and thus the video and the audio without any sense of incongruity can be reproduced together.

  As a modification of the processing in FIG. 8, the audio reproduced together with the video imaged by the imaging device 103 that cannot use audio data independently like the camera 501 is acquired by the camera 503 at the position specified by the user. It may be a voice.

  According to the process of this modification, it is possible to acquire audio at a location different from the camera that acquires the desired video, so that the user can watch the desired video, for example, at the center of the stadium. It is possible to listen to voices obtained from a specific microphone in a nearby voice or live music.

  In the above embodiment, the number of playback apparatuses 102 has been described as one, but the number of playback apparatuses 102 may be two or more. In this case, two or more playback devices 102 may be operated by a plurality of users, and each operation may be a different operation.

  In the above-described embodiment, the touch panel operation is performed on the playback device 102 such as a smartphone or a tablet, but an operation using a keyboard, a mouse, or the like may be performed instead of the touch panel operation. In the above embodiment, the imaging device 103 is arranged toward the center of the soccer stadium 500. However, the imaging device 103 may be arranged in any direction of 360 degrees. May be arranged in a vertical direction.

  Further, if all the playback devices are connected to the imaging device 103 on the network and the positional relationship information of the imaging device 103 is stored in the playback device 102, the playback device and the management device may be the same device. It can be realized even in a configuration without this.

  Note that the video reproduced by the playback device includes not only moving images but also still images. The reproduction method of the moving image may be a known reproduction method such as streaming reproduction. In the case of streaming reproduction, the reproduction device 102 periodically transmits the streaming data related to the image captured by the imaging device 103 via the management device 101. Receive and play.

  The present invention supplies software (program) that realizes the functions of the above-described embodiments to a system or apparatus via a network or various storage media, and the computer (or CPU, MPU, etc.) of the system or apparatus reads the program. In the processing to be executed, the program and a computer-readable storage medium storing the program are configured.

DESCRIPTION OF SYMBOLS 100 Image | video reproduction | regeneration system 101 Management apparatus 102 Reproduction | regeneration apparatus 103 Imaging device 520 Positional relationship information 203 Secondary storage

Claims (10)

Obtaining means for obtaining an image obtained by the imaging process of the first imaging device among the plurality of imaging devices;
Reproducing means for displaying the acquired video on a display unit and reproducing it,
Receiving means for receiving an instruction to change the image displayed on the display unit in response to a user operation performed on the touch panel;
Measuring means for measuring a change in a position where the user touches the touch panel;
Transmission means for transmitting movement information corresponding to the measured change to an external device,
After the transmission process by the transmission unit, the acquisition unit picks up an image of a second image pickup device different from the first image pickup device among the plurality of image pickup devices selected by the external device according to the movement information. Obtain a new video obtained by processing,
The video reproduction apparatus, wherein the reproduction means displays the newly acquired video on the display unit and reproduces it.   The video reproducing apparatus according to claim 1, wherein the measuring unit measures a distance from the position where the user touches the touch panel to a position away from the position as a change.   The video reproducing apparatus according to claim 1, wherein the measurement unit measures a change in the interval between the plurality of positions when there are a plurality of positions touched by the user. The external device holds positional relationship information indicating an arrangement of the plurality of imaging devices,
The second imaging device is selected according to the position of the first imaging device from which the video reproduced by the reproduction means indicated by the positional relationship information is obtained and the movement information. Item 4. The video playback device according to any one of Items 1 to 3.   The video reproduction device according to claim 4, wherein the measured change corresponds to the number of units from the first imaging device to the second imaging device. After the transmission processing by the transmission unit, the acquisition unit acquires videos of a plurality of imaging devices existing between the first device and the second imaging device among the plurality of imaging devices,
6. The video playback apparatus according to claim 1, wherein the playback unit continuously plays back video newly acquired from the plurality of imaging devices.   7. The video according to claim 1, wherein the second imaging device is selected by the external device based on a direction and the number set in advance in association with the movement information. Playback device.   The video reproduction device according to claim 1, wherein the movement information further corresponds to a type of operation of the user. Obtaining a video obtained by an imaging process of a first imaging device among a plurality of imaging devices;
Displaying the acquired video on a display unit and playing it back;
In response to a user operation performed on the touch panel, receiving an instruction to change the video displayed on the display unit;
Measuring a change in a position where the user touches the touch panel;
Transmitting movement information corresponding to the measured change to an external device;
After the transmission process, an image obtained by an imaging process of a second imaging apparatus different from the first imaging apparatus among the plurality of imaging apparatuses selected by the external apparatus according to the movement information is newly added. Step to get into,
A method for controlling a video playback apparatus, comprising: displaying the newly acquired video on the display unit and playing back the video.   A program that causes a computer to function as each unit of the video reproduction device according to any one of claims 1 to 8.

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