JP5404338B2 - Content reproduction apparatus and control method thereof - Google Patents

Description

  The present invention relates to a playback apparatus that plays back program content including a plurality of video contents and a control method thereof.

  A system has been developed that generates a dynamic video with a stereoscopic effect by switching and displaying a plurality of video contents taken from different viewpoint positions. For such program content composed of a plurality of video contents, it is possible to switch from the currently displayed video content to a video content at a different viewpoint position that can be played back in synchronization with each other by a user operation during playback. It is. By producing such program content in highlight scenes such as sports, it is possible to view from a viewpoint position desired by the user in a scene with a high degree of attention in the program content.

  FIG. 11 shows an example of a display screen when displaying program content composed of a plurality of video contents. FIG. 12 shows an outline of the operation of the content reproduction apparatus that reproduces program content composed of a plurality of video contents. As shown in FIG. 11, the viewpoint information such as the viewpoint position and shooting direction of each video content included in the program content being played back and the operation information are displayed on the display unit as a GUI (Graphical User Interface) together with the video content being viewed. .

  11 and 12, it is assumed that the program content composed of a plurality of video contents is composed of video contents V1 to V3 by cameras C1 to C3 that shoot a subject. The content reproduction apparatus decodes a plurality of video contents included in the program content at the same time, and reproduces them in synchronization with each other. Then, one video content is output from the plurality of video content to the display unit at a predetermined reproduction speed. In FIG. 12, when the video content V1 is displayed on the display unit from the time T1, it is assumed that the user performs a switching operation to the video content V3 at the time T2. At this time, the video displayed on the display unit is switched from the frame image F1 of the video content V1 to the frame image F3 of the video content V3, and then the video of the video content V3 is displayed.

  In Patent Document 1, the viewpoint position is switched at an arbitrary timing so that an unnatural moving image is not presented to the user when playing video content from another viewpoint position. A technique for continuously reproducing video without interruption is disclosed.

  On the other hand, in Patent Document 2, in order to make it possible to grasp the content of a fast moving video, the amount of change between frame images of the video is detected, and if the amount of change is large, the playback speed is automatically slowed down. Techniques to do this are disclosed.

JP 2003-179867 A JP-A-10-243351

  In a viewing environment for program content consisting of multiple video contents with different viewpoint positions that can be played back in synchronization with each other, when the viewpoint position is changed by switching the video content, the video at which viewpoint position is determined from the video content It is difficult to judge immediately. At this time, if the video content after the switching process is played back at a normal playback speed, it becomes difficult for the user to instantly understand the relative relationship between the viewpoint position of the video content after the switching process and the subject.

  Therefore, the present invention provides a content for reproducing video content so that the user can understand the relative relationship between the viewpoint position of the video content after the switching processing and the subject when the video content switching processing is performed while viewing the program content. An object is to provide a playback device.

In order to achieve the above object, a content playback apparatus of the present invention is a content playback apparatus for playing back program content, which is composed of a plurality of video contents with different viewpoint positions, which can be played back in synchronization with each other. A selection means for selecting a video content to be displayed on the display unit from a plurality of video contents constituting the program content, and after the first video content is selected by the selection means, the second video content is selected. A switching means for switching the video content to be displayed on the display unit from the first video content to the second video content, and a predetermined period after the switching process by the switching means, The playback speed of the second video content is the first video content before the switching process by the switching means. And having a control means for controlling so that the slower rate than the reproduction speed of the contents. In order to achieve the above object, a control method for a content playback apparatus according to the present invention is a control method for a content playback apparatus that plays back program content composed of a plurality of video contents, and configures the program content. A selection process for selecting video content to be displayed on the display unit from a plurality of video contents, and a display when the second video content is selected after the first video content is selected in the selection process A switching step of performing a process of switching the video content to be displayed on the section from the first video content to the second video content, and the second video content for a predetermined period after the switching process is performed in the switching step. Playback speed of the first video content before the switching process in the switching step Characterized by a control step of performing control so that the slower rate than in degrees.

  When the video content switching process is performed while viewing the program content, the video content can be reproduced so that the user can understand the relative relationship between the viewpoint position of the video content after the switching process and the subject.

1 is a configuration diagram of a TV receiver according to Embodiment 1 of the present invention. It is an example of a structure of the remote control key of the remote control which concerns on the Example of this invention. It is the figure which showed the flow of the reproduction | regeneration frame image in the multiview video content which concerns on Example 1 of this invention. It is a flowchart regarding the reproduction | regeneration processing of the multi-view video content based on Example 1 of this invention. It is a figure which shows the example of the reproduction | regeneration control information described in the multiview video program. It is a figure which shows the example of presentation of the GUI image for setting the reproduction speed. It is a block diagram of TV receiver which concerns on Example 2 of this invention. It is the figure which showed the flow of the reproduction | regeneration frame image in the multi-view video content which concerns on Example 2 of this invention. It is a flowchart regarding the reproduction | regeneration processing of the multi-view video content based on Example 2 of this invention. It is a block diagram of TV receiver which concerns on Example 3 of this invention. It is a figure which shows the example of a display screen at the time of displaying the program content comprised by several video content. It is a figure which shows the operation | movement outline | summary of the content reproduction apparatus which reproduces | regenerates the program content comprised by several video content.

  Examples of the present invention will be described below. Examples of the content reproduction device of the present invention include a TV receiver, a recorder device, a mobile phone, and a personal computer.

Example 1
An embodiment of the present invention will be specifically described below by taking a TV receiver as an example of a content playback apparatus. In the present embodiment, a case will be described in which the program content to be reproduced is multi-view video content including a plurality of video content. Multi-view video content is composed of a plurality of video contents with different viewpoint positions that can be played back in synchronization with each other, for example, a plurality of video content that is synchronously shot by a plurality of cameras arranged so as to surround a certain subject. Is.

  FIG. 1 is a configuration diagram of a TV receiver 100 according to Embodiment 1 of the present invention. The TV receiving apparatus 100 includes a tuner unit 101, a network I / F unit 102, a TS decoder unit 103, an AV decoder unit 104, a switching / generation unit 105, an AV processing unit 106, an output unit 107, a memory unit 108, and an HD (hard disk). 109, a control unit 110, a GUI creation unit 111, and a remote control reception unit 112. These are respectively connected by an internal bus, operate by a control signal of the control unit 110, and can transmit / receive data to / from each other. The control unit 110 executes a receiver program built in the memory unit 108 in advance. Then, based on the executed receiver program and the received remote control signal from the user, a control instruction is issued to each component. Specific control of the receiver program includes normal program tuning and user settings. Hereinafter, unless otherwise specified, the operation of the control unit 110 is based on the receiver program.

  In response to a control instruction from the control unit 110, the tuner unit 101 receives a digital broadcast wave, performs demodulation processing, and extracts content data (TS data) in which video and audio are multiplexed. The network I / F unit 102 acquires content data via the network. Content data acquired from the tuner unit 101 or the network I / F unit 102 is downloaded in a file format and stored in the memory unit 108 or the HD 109.

  The TS decoding unit 103 reads the content data stored in the memory unit 108 or the HD 109 in accordance with a control instruction from the control unit 110. The TS decoding unit 103 extracts various data necessary for normal program display such as video stream data, audio stream data, synchronization information such as PCR, and program information data from the content data. Video stream data and audio stream data are data in the Mpeg format defined by ARIB. The program information data indicates PSI / SI information (Program Specification Information and Service Information) defined by ARIB. When the acquired content data is multi-view video content including a plurality of video content, the multi-view video control program is extracted from the content data and stored in the memory unit 108. The multi-view video control program is an ARIB-defined BML format program or a Java format program currently used in digital broadcasting. However, it is not limited to this. The multi-view video control program corresponding to the multi-view video content to be reproduced may be built in the TV receiving apparatus 100 in advance or may be sent from the sending side. The multi-view video control program includes source code for executing processing for selecting and playing back video content to be played from a plurality of video content included in the multi-view video content, and processing for designating a playback speed. Furthermore, source code for executing processing for drawing GUI component data to be presented to the user is included.

  The AV decoding unit 104 decodes the video stream data and the audio stream data input from the TS decoding unit 103 while maintaining synchronization using synchronization information such as PCR. Further, the AV decoding unit 104 has a function of simultaneously decoding a plurality of video stream data. In order to synchronize a plurality of video stream data, a clock used for decoding one video stream data is used as a master clock, and other video stream data are also decoded in synchronization with the clock. In addition, in order to align the decoding start timing of a plurality of video stream data, it has a function that can temporarily pause after decoding the first playback frame of each video stream data. The video stream data and audio stream data decoded by the AV decoding unit 104 are output to the switching / generating unit 105. Further, when the AV decoding unit 105 receives a playback speed adjustment instruction from the receiver program or the multi-view video control program from the control unit 110, the AV decoding unit 105 transfers to the switching / generation unit 105 at a transfer speed corresponding to the instructed playback speed. Forward.

  The switching / generating unit 105 selects one of the video stream data output from the AV decoding unit 104 based on a control instruction from the control unit 110. Further, video data obtained by synthesizing the video of the selected video stream data and a GUI image created by the GUI creation unit 111 described later is output to the AV processing unit 106 at the subsequent stage. The GUI image described here includes a GUI included in the multi-view video control program. For example, a GUI (multi-view video, operation information, viewpoint information) for viewing the multi-view video content shown in FIG. It is.

  The AV processing unit 106 performs predetermined image processing on the video data output from the switching / generating unit 105. Image processing includes processing such as contrast adjustment, color correction, noise removal, luminance correction, and edge enhancement. The audio stream data is subjected to audio processing such as sound quality and presence, and volume adjustment processing. The sound processing described above includes processing such as pseudo-surround processing, bass emphasis processing, D / A conversion, and amplification processing. The AV processing unit 106 performs the above-described processing on the output video data and the audio stream data corresponding to the video data, and then outputs the video data to the output unit 107.

  The output unit 107 outputs the video data and audio data processed by the AV processing unit 106 to a display monitor and a speaker. As described above, the memory unit 108 stores program information data and a multi-view video control program. In addition, the receiver program and GUI component data described above are stored. In the streaming method in which content data is reproduced while being received, the content data can be reproduced while being temporarily stored in the memory unit 108. In a download method in which content data is acquired in a file format and played back, the content data is downloaded in a file format and can be played after it has been stored in the HD 109. The memory unit 108 and the HD 109 may be physically the same, and the application is not limited to the above.

  The control unit 110 executes the above-described receiver program and performs processing according to a remote control signal from the user received from the remote control receiving unit 110 described later. In addition, during playback of multi-view video content, the above-described multi-view video control program is executed. When the video stream data and the audio stream data are transferred from the memory unit 108 or the HD 109 to the AV decoding unit 104, the control unit 110 transfers the video stream data and the audio stream data according to the storage status of the video file buffer included in the AV decoding unit 104. Make adjustments.

  The GUI creation unit 111 creates a GUI image from the GUI component data built in the memory 108 and outputs the GUI image to the switching / generation unit 105. As described above, some GUI part data is stored in the memory unit 108 from the time of shipment from the factory, and is received from the tuner unit 101 or the Internet I / F unit 102 and temporarily stored in the memory unit 108. Some have.

  The remote control receiving unit 112 receives a remote control signal output from the remote control 200 for the TV receiver 100 and transfers it to the control unit 110.

  FIG. 2 is a configuration example of a remote control key of the remote control 200 according to the embodiment of the present invention. The remote controller 200 switches a numeric key 201, a channel up / down key 202, a power key 203, a volume adjustment key 204, an application key 205 for manually starting a multi-view video control program, and video content data to be displayed. At least an arrow key 207 and an enter key 208 used for the purpose. In addition, a color key or an input switching key defined by ARIB may be provided.

  FIG. 3 is a diagram illustrating a flow of a playback frame image in multi-view video content that is played back by the TV receiver 100 in the present embodiment. The TV receiving device 100 plays back the video contents V11 to V13 included in the multi-view video content at the same time. One video content V11 out of the video content V11 to V13 is displayed on the display unit at a predetermined playback speed (for example, 1 × speed) from time T11. Hereinafter, playing video content at 1 × speed is referred to as normal playback. Assume that at time T12, in response to a user instruction, the content to be displayed on the display unit is switched from the video content V11 to the video content V13. Control is performed so that the playback speed of all the content played back simultaneously at a predetermined period from time T12 is played back at a playback speed (for example, 0.5 times faster) than the playback speed before time T12 (hereinafter referred to as slow playback). .

  FIG. 4 shows a flow related to multi-view video content playback processing in the present embodiment. This flow mainly shows the processing of the control unit 110, and is specifically divided into processing based on the multi-view video control program and processing based on the receiver program. In the following description, for example, it is assumed that the receiver program is stored in advance in the memory unit 108 before the TV receiver 100 is shipped. It is assumed that a JAVA program that is a multi-view video control program is downloaded via a broadcast wave and stored in the memory unit 108. In addition, multi-view video content including a plurality of video content is downloaded via the network and stored in the HD 109 in a video file state for each viewpoint.

  First, the receiver program reads and activates the multi-view video control program from the memory unit 108 in accordance with a control instruction from the control unit 110. (Step S401). The activated multi-view video control program issues an instruction to create a GUI image for viewing the multi-view video content from the GUI part information and layout information included in the multi-view video control program to the GUI generation unit 110 ( Step S402). As shown in the example of FIG. 11, the GUI image at this time includes the viewpoint information such as the viewpoint position and the shooting direction of each video content included in the multi-view video content being played back, the operation information, and the like. In addition, it is displayed on the display unit.

  The multi-view video control program describes reproduction control information for multi-view video content. FIG. 5 shows an example of reproduction control information described in the multi-view video program. Name of content to be played simultaneously, content name to be displayed when left rotation or right rotation is instructed by operation information such as GUI during playback of a certain content, first presented when playing multi-view video content Contents, playback speed, etc. are described.

  The control unit 110 controls the reproduction of a plurality of video contents based on the reproduction control information of the multi-view video control program (Step S403). When playing back video content, the AV decoding unit 104 decodes video stream data and audio stream data of a plurality of video content included in the multi-view video content being displayed in synchronization. The receiver program detects the operation state of the AV decoding unit 104, and recognizes the reproduction of the multi-view video content when decoding a plurality of video content in synchronization (step S409).

  In step S404, video stream data and audio stream data of default video content are selected from a plurality of video contents decoded by the AV decoding unit 104 based on the reproduction control information, and output to the AV processing unit 106. In step S405, it is determined whether there is an instruction to switch the video content to be displayed by the user during the reproduction of the multi-view video content. The video content switching instruction corresponds to, for example, an operation instructed to rotate left or right by GUI operation information shown in FIG. 11 or an operation to directly select a viewpoint to be viewed by viewpoint information.

  In step S405, the switching / generation unit 105 performs a process of switching the video content to be displayed when a video content switching instruction is given (step S406). At this time, the receiver program recognizes the switching of the video content based on the operation state of the S410 switching / generating unit 105 (step S410). The reproduction control of the multi-view video control program is invalidated to give priority to the reproduction control by the receiver program (step S411), and the reproduction control of the video content after the switching process is performed.

  In step S412, the receiver program instructs the AV decoding unit 104 to perform slow playback of the video content after the switching process (S402). The control unit 110 reduces the decoding speed in the AV decoding unit 104. The control unit 110 transfers the content data from the memory unit 108 or the HD 109 to the TS decoding unit 103 and from the TS decoding unit 103 to the AV decoding unit 104 according to the data accumulation state in the buffer included in the AV decoding unit 104. Adjust. Thereby, slow reproduction of the video content to be displayed is possible. The slow playback method of the video content is not limited to the method described above, and an existing technique for adjusting the playback speed can be used.

  It is determined whether or not a predetermined period has elapsed since the video content switching process was performed (step S413). The predetermined period is a period in which the user can sufficiently recognize the relative relationship between the viewpoint position of the video content after the video content switching process and the subject, and is preferably several seconds to several tens of seconds. Before the predetermined period, it is determined whether or not scene switching has occurred in the displayed video content (step S414). When a scene change occurs, the playback control of the multi-view video control program is validated (step S415), and the playback speed of the video content is returned to the playback speed of normal playback (step S407). When a scene change occurs, there is no need to consider the relative position between the viewpoint position of the video content before and after the scene change and the subject, so that normal playback is more convenient for the user. The multi-view video program and the receiver program monitor the video content switching instruction by the user until the playback of the video content is completed (steps S408 and S416).

  In the above description, in step S411, the reproduction control of the multi-view video control program is invalidated and the reproduction control by the receiver program is prioritized. However, this may be limited to the control related to the reproduction speed. That is, when a process related to control other than the playback speed is instructed from the multi-view video control program during the processes from step S411 to step S415, the process may be prioritized. For example, control such as playback stop and playback pause may be performed as usual.

  There may be provided setting means for allowing the user to set the playback speed of the video content after the switching processing of the video content to be displayed. FIG. 6 shows an example of presentation of a reproduction speed setting GUI image. In addition to the items that can be selected by the user, such as 0.5 times speed and 0.1 times speed, the playback speed after the video content switching process, and whether or not to adjust the playback speed after the video content switching process. An item to be set may be provided. Further, after the video content switching process, the playback speed may be gradually increased to the playback speed at the normal playback so that the slow playback smoothly changes to the normal playback.

  In the present embodiment, the description has been made assuming that the playback speed during normal playback of video content is 1 × speed. However, even when playback is performed at a playback speed other than 1 × speed, the video content switching process is performed for a predetermined period of time. Is slow playback at a playback speed slower than the playback speed before the switching process.

  According to the above, in the multi-view video content, since the video content is slow-played for a predetermined period after the video content switching process is performed, the video can be understood so that the relative relationship between the viewpoint position of the video content and the subject can be understood. Content can be played back.

(Example 2)
FIG. 7 shows a configuration diagram of TV receiver 700 in the present embodiment. Unlike the TV receiver 100 shown in FIG. 1 according to the first embodiment, it includes a motion amount acquisition unit 701. The motion amount acquisition unit 701 acquires the motion amount of the video between the frame images in the entire frame image or a specific region in the frame image from the frame image data included in the video content. The method of acquiring the amount of motion of the video is a method of analyzing the amount and direction of movement of the object in the video between frame images by detecting a motion vector by block matching or the like, a method of acquiring from the metadata attached to the video content Any acquisition method may be used.

  FIG. 8A is a conceptual diagram showing the flow of a playback frame image in multi-view video content in this embodiment. FIG. 8B shows viewpoint information regarding the cameras C21 to C23 that created the video contents V21 to V23 in FIG. As the viewpoint information regarding the viewpoint position and the line-of-sight direction of the video contents V21 to V23, viewpoint information or the like given to the video contents by metadata is used.

  The TV receiving device 700 normally reproduces the video content V21 to V23 included in the multi-view video content simultaneously from time T21. One video content V21 out of the video content V21 to V23 is displayed on the display unit. Assume that at time T22, in accordance with a user instruction, the content to be displayed on the display unit is switched from the video content V21 to the video content V23. At this time, the motion amount acquisition unit 701 moves from a predetermined number of frame image data (for example, frame image data for several frames to several tens of frames) reproduced before time T22 of the video content V23 reproduced from time T22. Get the quantity. The control unit 110 determines the playback speed of the video content for a predetermined period from time T22 according to the acquired amount of motion. When the amount of motion is equal to or greater than a predetermined threshold, as shown in FIG. 8A, all the contents that are simultaneously played for a predetermined period from time T22 are played back at a playback speed (for example, 0. Slow playback at 5x speed. On the other hand, when the amount of motion is less than the predetermined threshold, the video content V23 after the switching process is normally reproduced.

  FIG. 9 shows a flow relating to multi-view video content playback processing in the present embodiment. The difference from FIG. 4 in the first embodiment is that in step S901, the control unit 110 determines whether or not the amount of motion acquired from the frame image data of the video content is equal to or greater than a predetermined threshold. As a result of the determination, if the amount of motion is equal to or greater than the threshold, the video content after the switching process is played back slowly. When the amount of motion is less than the threshold value, the video content after the switching process is normally reproduced. In step S408 and step S416, the multi-view video program and the receiver program monitor the video content switching instruction from the user until the video content playback ends.

  In the above description, the amount of motion in the video content V23 displayed on the display unit after the switching process is used as the amount of motion used for determining whether to perform slow reproduction. However, the amount of motion in the video content V21 displayed before the switching processing is used. May be used. When the video content to be played back is multi-view video content, each video content displayed before and after the switching process is a video of the same subject, even if the video content is shot from different viewpoints. Therefore, since the amount of motion of the same subject is acquired, the same effect can be obtained even if the amount of motion acquired from any video content is used for determining whether to perform slow playback. The motion amount in the frame image of the video content may be acquired after receiving an instruction to switch the video content, or may be acquired constantly during playback of the video content. Further, the playback speed according to the acquired motion amount may be set such that the playback speed of the video content after the switching process is slowed as the acquired motion amount is large, or the playback speed set by the user as shown in FIG. May be.

  Further, the playback speed after the video content switching process may be slower when the video content V21 is switched to the video content V23 than when the video content V21 is switched to the video content V22. As can be seen from FIG. 8B, the viewpoint position of the video content changes more greatly when switching from the video content V21 to the video content V23 than when switching from the video content V21 to the video content V22. If the viewpoint position of the video content changes greatly before and after the video content switching process, it becomes more difficult to instantly understand the relative relationship between the viewpoint position of the video content and the subject. As described above, the control unit 110 acquires the change amount of the viewpoint position in the video content before and after the switching process, and the playback speed of the video content after the switching process depends on the change amount of the viewpoint position in the video content before and after the switching process. It may be a different speed.

  As described above, in this embodiment, when the user gives an instruction to switch the video content while viewing the multi-view video content, the amount of motion between the frame images of the video content is acquired. Then, when the acquired amount of motion is greater than or equal to the threshold value, slow playback is performed for a predetermined period after the switching process is performed, so that the amount of motion is determined so that the relative relationship between the viewpoint position of the video content and the subject can be understood. Video content exceeding the threshold can be played back.

(Example 3)
In this embodiment, multi-view content including a plurality of video contents is acquired from the tuner unit or the network I / F unit as content to be played back. Multi-view content is program content that can be played back in synchronization with each other, and is composed of a plurality of video contents that are related to each other and have different viewpoint positions. In this embodiment, the multi-view content is acquired by the streaming method, and is played back while receiving the content data via the broadcast wave or the Internet, such as digital broadcasting, VOD (Video on Demand), or IP broadcasting.

  FIG. 10 is a configuration diagram of the TV receiver 1000 according to the third embodiment of the present invention. Unlike the first embodiment, a stream memory unit 1001 is provided after the TS decoding unit 104. The stream memory unit 1001 temporarily stores the video stream data and the audio stream data separated by the TS decoding unit 103. Further, the transfer rate of the video stream data and the audio stream data from the stream memory unit 1001 to the AV decoding unit 104 is adjusted by the control instruction of the control unit 110. Note that the stream memory unit 1001 may be physically the same as the memory unit 108 or the HD 109.

  A diagram showing the flow of the playback frame image of the multi-view content that is played back by the TV receiver 1000 in this embodiment is the same as FIG. In the first embodiment, the video contents V11 to V13 are multi-viewpoint video contents. In the present embodiment, the video contents V11 to V13 are assumed to be multi-view contents. The TV receiving device 1000 plays back the video contents V11 to V13 included in the multi-view content at the same time. The video contents V11 to V13 are normally played back at a predetermined playback speed (for example, 1 × speed) from time T11, and one video content V11 is displayed on the display unit. Assume that at time T12, in response to a user instruction, the content to be displayed on the display unit is switched from the video content V11 to the video content V13. At this time, the control unit 110 performs control for slow playback of all the content that is being played simultaneously for a predetermined period from time T12 at a playback speed (for example, 0.5 times speed) slower than the playback speed before time T12.

  As in the second embodiment, the playback speed of the video content after the switching process is a speed according to the amount of motion acquired from the frame image data of the video content V11 or V13 displayed on the display unit before and after the video content switching process. But you can. Further, the playback speed of the video content after the switching process may be set according to the change amount of the viewpoint position in the video content before and after the switching process.

  According to the above, since the video content is slowly played back for a predetermined period after the video content switching process during viewing of the multi-view video content is performed, the relative relationship between the viewpoint position of the video content and the subject can be understood. Can play video content

DESCRIPTION OF SYMBOLS 100 TV receiver 101 Tuner part 102 Network I / F part 104 AV decoding part 105 Switching / generation part 110 Control part 111 GUI production part 701 Motion amount acquisition part 1001 Stream memory part

Claims (8)

In a content playback apparatus for playing back program content, which is composed of a plurality of video content with different viewpoint positions that can be played back in synchronization with each other,
Selecting means for selecting video content to be displayed on the display unit from a plurality of video content constituting the program content;
When the second video content is selected after the selection unit selects the first video content, the video content to be displayed on the display unit is changed from the first video content to the second video content. Switching means for performing the switching process;
The playback speed of the second video content is set to be slower than the playback speed of the first video content before the switching process by the switching means for a predetermined period after the switching process by the switching means is performed. A content reproduction apparatus comprising: control means for performing control. Obtaining means for obtaining a motion amount of a video between frame images included in the video content;
When the amount of motion acquired by the acquisition unit is greater than or equal to a predetermined threshold, the control unit determines that the playback speed of the second video content displayed on the display unit is the first before the switching process by the switching unit. When the amount of motion acquired by the acquisition unit is less than a predetermined threshold, the control unit controls the second content displayed on the display unit. 2. The content reproduction according to claim 1, wherein control is not performed so that a reproduction speed of the video content is slower than a reproduction speed of the first video content before the switching process by the switching unit. apparatus.   The content reproduction apparatus according to claim 2, wherein the acquisition unit acquires a video motion amount between frame images included in the second video content before the switching process by the switching unit. The plurality of video contents constituting the program content are video contents at a plurality of different viewpoint positions,
The control means acquires the amount of change in the viewpoint position from the viewpoint position of the first video content to the viewpoint position of the second video content, and the switching means performs the switching process by the switching means for a predetermined period of time. The content playback apparatus according to any one of claims 1 to 3, wherein control is performed so that a playback speed of the second video content is a speed corresponding to the acquired amount of change. In a control method of a content playback apparatus for playing back program content composed of a plurality of video contents,
A selection step of selecting video content to be displayed on the display unit from among a plurality of video content constituting the program content;
After the first video content Oite is selected in said selecting step, when the second video content is selected, the video contents to be displayed on the display unit, the second image from the first video content A switching step for performing processing for switching to the content;
Predetermined period after Oite switching process is performed in the switching step, the playback speed of the second video content, the slower rate than the reproduction speed of the first video content before switching process definitive in the switching step And a control process for controlling the content playback apparatus. An acquisition step of acquiring a motion amount of a video between frame images included in the video content;
When the amount of motion acquired in the acquisition step is greater than or equal to a predetermined threshold, in the control step, the playback speed of the second video content displayed on the display unit is the first before the switching process in the switching step. If the motion amount acquired in the acquisition step is less than a predetermined threshold, the control step displays the display on the display unit. 6. The control according to claim 5, wherein control is performed so that the playback speed of the second video content is slower than the playback speed of the first video content before the switching process in the switching step. Control method of content reproduction apparatus. 7. The control of the content reproduction apparatus according to claim 6, wherein in the acquisition step, a motion amount of a video between frame images included in the second video content before the switching process in the switching step is acquired. Method. The plurality of video contents constituting the program content are video contents at a plurality of different viewpoint positions,
In the control step, a change amount of the viewpoint position from the viewpoint position of the first video content to the viewpoint position of the second video content is acquired, and the switching process is performed in a predetermined period after the switching process is performed in the switching step. 8. The method of controlling a content playback apparatus according to claim 5, wherein control is performed so that a playback speed of the second video content is a speed corresponding to the acquired amount of change. .

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