JP2023019389A - Video reproducing apparatus, video recording reproducing method, and video reproducing program - Google Patents

Abstract

To provide a video reproducing apparatus which can reproduce video data captured by an imaging apparatus, even in reproducing the data at a frame rate different from an imaging frame rate of the imaging apparatus, from a designated position on the basis of tag information generated during the imaging by a device different from the imaging apparatus.SOLUTION: A video data acquisition unit 311 acquires video data generated with imaging start time information based on a reference time at a first frame rate. A tag information acquisition unit 312 acquires tag information including reproduction start time of the video data based on the reference time. A reproduction start position calculation unit 314 calculates a reproduction start position of the video data using the tag information, on the basis of a difference between the imaging start time and the reproduction start time and a ratio between a second frame rate and the first frame rate. A reproduction control unit 317 causes a video reproduction unit 313 to reproduce the video data at the reproduction start position at the second frame rate, on receipt of an instruction to reproduce the video data using the tag information.SELECTED DRAWING: Figure 2

Description

Applied for application of Article 30, Paragraph 2 of the Patent Act Sold at Yomiuri Giants Stadium in Tama Ward, Kawasaki City, Kanagawa Prefecture on March 30, 2021

The present invention relates to a moving image reproducing apparatus, a moving image recording/reproducing method, and a moving image reproducing program.

2. Description of the Related Art In coaching athletes, etc., there are increasing opportunities to utilize moving images captured at a high frame rate by a high-speed camera device and to reproduce them in slow motion at a general frame rate using a moving image reproducing device. By slow-motion playback of videos shot at a high frame rate, it is possible to grasp the quick movements of athletes that cannot be followed with the naked eye.

At that time, it may be desired to view only a scene of a specific movement of the athlete from among the captured moving images. In that case, the user needs to search for the position of the scene he/she wants to view from the video and perform a playback operation.

In order to facilitate the process of searching for and playing back a desired scene from moving images, there is a technique of adding tag information to corresponding positions in moving image data (Patent Document 1). By adding tag information to moving image data, a desired scene can be easily reproduced by the user only by performing an operation of designating the tag information at the time of viewing.

JP 2020-107991 A

The image capturing apparatus described in Patent Document 1 can add tag information to the corresponding position of captured moving image data by designating the timing of a scene to be reproduced later at the time of capturing. On the other hand, a terminal device possessed by a user at a location remote from the imaging device receives video data captured by the imaging device via wireless communication and adds tag information to the video data while viewing the data in real time. There is a desire to perform an operation for specifying a position.

However, in order to generate tag information for moving image data shot by the imaging device in a terminal device different from the imaging device, the terminal device that generates the tag information and the imaging device must be connected by communication, or the processing timing must be adjusted. Synchronization is necessary, and there is a problem that system construction becomes complicated.

Further, even if the processing timing is synchronized between the device that generates the tag information and the imaging device, if the frame rate at the time of shooting differs from the frame rate at the time of playback as described above, the tag information can be used to achieve the user's desired image. There was a problem that it was not possible to play from the position. For example, it is assumed that shooting of an object to be shot is started at a frame rate twice the normal frame rate. When the user generates tag information with the terminal device 10 minutes after the start of photography, the tag information indicates the time 10 minutes after the start of photography. Next, when playing back the shot video at a normal frame rate, if you play back from the time indicated by the tag information, the playback video will be played in slow motion, so playback will start from the scene 5 minutes after the actual shooting. will be

Even in the case where moving image data shot by an imaging device is played back at a frame rate different from the shooting frame rate of the imaging device, the present invention provides tag information generated during shooting by a device different from the imaging device. To provide a moving image reproducing device, a moving image recording/reproducing method, and a moving image reproducing program capable of reproducing from a position specified based on

In order to achieve the above object, the moving image reproducing apparatus of the present invention comprises: a moving image data obtaining unit for obtaining moving image data generated at a first frame rate to which information about a shooting start time based on a reference time is added; a tag information acquisition unit that acquires tag information including the playback start time of the video data based on a video playback unit that plays back the video data at a second frame rate different from the first frame rate; and the shooting start time a reproduction start position calculation unit that calculates a reproduction start position of the moving image data based on the tag information based on a difference from the reproduction start time and a ratio between the second frame rate and the first frame rate; and a reproduction control unit that causes the moving image reproduction unit to reproduce the moving image data at the second frame rate from the reproduction start position when the reproduction of the moving image data is instructed by the information.

Further, in the moving image recording/reproducing method of the present invention, the imaging device generates and records moving image data to which information about the shooting start time based on the reference time is added at a first frame rate, and the tag information generating device generates and records the reference time. A moving image reproducing device that stores tag information including a reproduction start time of the moving image data based on time and reproduces the moving image data at a second frame rate different from the first frame rate acquires the moving image data and the tag information. , based on the difference between the shooting start time and the playback start time and the ratio between the second frame rate and the first frame rate, calculating the playback start position of the moving image data according to the tag information; The moving image data is reproduced at the second frame rate from the calculated reproduction start position when the reproduction of the moving image data is instructed by the tag information.

Further, the moving image reproduction program of the present invention includes a function of acquiring moving image data generated at a first frame rate to which information of a shooting start time based on a reference time is added to a computer, and a function of acquiring the moving image data based on the reference time. a function of acquiring tag information including a reproduction start time; a function of reproducing the moving image data at a second frame rate different from the first frame rate; a difference between the shooting start time and the reproduction start time; a function of calculating a reproduction start position of the moving image data based on the tag information based on a ratio between the second frame rate and the first frame rate; and a function of reproducing data at the second frame rate from the reproduction start position.

According to the moving image reproducing apparatus, moving image recording/reproducing method, and moving image reproducing program of the present invention, even when reproducing a moving image captured by an imaging device at a frame rate different from the imaging frame rate of the imaging device, It is possible to reproduce from a designated position based on tag information generated at the time of photographing by a device different from the image pickup device.

1 is a block diagram showing the configuration of a moving image processing system using a moving image reproducing device according to an embodiment of the present invention; FIG. 1 is a block diagram showing the configuration of a video playback device according to one embodiment of the present invention; FIG. FIG. 3 is a sequence diagram showing processing executed by a moving image processing system using a moving image reproducing device according to an embodiment of the present invention; FIG. 3 is an explanatory diagram showing the configuration of moving image data acquired by the moving image reproducing device according to one embodiment of the present invention; 1 is an example of a screen configuration diagram displayed on a tag information generation device that generates tag information to be input to a moving image reproduction device according to an embodiment of the present invention; FIG. It is an example of a display screen of moving image data viewed by a user when generating tag information to be input to the moving image reproducing device according to the embodiment of the present invention. It is an example of a tag information table to be input to the moving image reproducing device according to one embodiment of the present invention. It is an example of a tag information table updated by the moving image reproducing device according to one embodiment of the present invention. It is an example of a tag information table updated by a moving image reproducing device according to another aspect of the present invention. FIG. 11 is an explanatory diagram showing a reproduced portion in moving image data when the reproduction start position is adjusted in the moving image reproducing device according to another embodiment of the present invention;

A moving image processing system 1 using a moving image reproducing device according to an embodiment of the present invention will be described below with reference to the drawings.

<Configuration of moving image processing system 1 according to one embodiment>
A moving image processing system 1 according to the present embodiment includes a high-speed camera device 10 as an imaging device, a tag information generating device 20, and a moving image reproducing device 30, as shown in FIG. A moving image processing system 1 is connected to an NTP (Network Time Protocol) server 3 via a communication network 2 . The NTP server 3 is a server that distributes information on the reference time.

The high-speed camera device 10 has an imaging unit 11 , a first moving image data storage unit 12 , a camera control unit 13 and a moving image data transmission unit 14 . The shooting unit 11 shoots a moving image at a first frame rate. The first frame rate is a frame rate set higher than the normal frame rate in advance, such as 240 FPS, so that it can be played back smoothly in slow motion when played back at the normal frame rate of 60 FPS (frames per second). is. The first moving image data storage unit 12 stores moving image data shot by the shooting unit 11, and adds information about the first frame rate to the moving image data as metadata.

The camera control section 13 has a first time information acquisition section 131 and a start time information addition section 132 . The first time information acquisition unit 131 acquires reference time information distributed from the NTP server 3 . The start time information adding unit 132 acquires time information when the shooting unit 11 starts shooting based on the reference time information acquired by the first time information acquiring unit 131, and stores the information in the first moving image data storage unit 12. It is added as metadata to the corresponding stored moving image data. The moving image data transmission unit 14 transmits the moving image data stored in the first moving image data storage unit 12 to the moving image reproducing device 30 by wired or wireless communication such as wired LAN or wireless LAN. The first time information acquisition unit 131 may have a built-in clock and update the built-in clock based on the reference time information obtained from the NTP server 3 at predetermined intervals.

The tag information generation device 20 is configured by, for example, a smart device, and has a user interface section 21 , a generation device control section 22 , a first tag information storage section 23 and a tag information transmission section 24 . The user interface unit 21 is configured by, for example, a touch panel, and inputs information on operations performed by the user to the generation device control unit 22 and outputs information processing results by the generation device control unit 22 .

The generation device control section 22 has a second time information acquisition section 221 , a first operation information acquisition section 222 and a tag information generation section 223 . The second time information acquisition unit 221 acquires reference time information delivered from the NTP server 3 . The first operation information acquisition unit 222 acquires user operation information input from the user interface unit 21 . The second time information acquisition unit 221 may have a built-in clock and update the built-in clock based on the reference time information obtained from the NTP server 3 at predetermined intervals.

When the operation information for generating the tag information is acquired by the first operation information acquisition unit 222, the tag information generation unit 223 acquires the time information indicating the timing of acquisition by the second time information acquisition unit 221. Based on the reference time information, tag information is generated that includes the time information as reproduction start time information.

The first tag information storage section 23 stores tag information generated by the tag information generation section 223 . The tag information transmission unit 24 transmits the tag information stored in the first tag information storage unit 23 to the moving image reproducing device 30 through wired or wireless communication such as wired LAN or wireless LAN.

As shown in FIG. 2 , the video playback device 30 has a CPU 31 , a storage section 32 and a display section 33 . The CPU 31 includes a video data acquisition unit 311, a tag information acquisition unit 312, a video playback unit 313, a playback start position calculation unit 314, a second operation information acquisition unit 315, a tag information update processing unit 316, and playback control. 317. The storage unit 32 has a second moving image data storage unit 321 and a second tag information storage unit 322 .

The moving image data acquisition unit 311 acquires moving image data captured by the high-speed camera device 10 and stores it in the second moving image data storage unit 321 . The tag information acquisition section 312 acquires the tag information transmitted from the tag information generation device 20 and stores it in the second tag information storage section 322 .

The moving image reproducing unit 313 reproduces moving image data at a second frame rate different from the first frame rate. In the moving image reproducing unit 313, the second frame rate is set in advance to the normal frame rate (60 FPS). The second frame rate is user changeable. For each piece of tag information stored in the second tag information storage unit 322, the playback start position calculation unit 314 calculates the shooting start time of the moving image data stored in the second moving image data storage unit 321 and the playback start time indicated by the corresponding tag information. and the ratio between the second frame rate and the first frame rate, the reproduction start position of the corresponding moving image data based on the corresponding tag information is calculated. The reproduction start position calculation unit 314 adds the information of the calculated reproduction start position to the corresponding tag information in the second tag information storage unit 322 and stores it.

The second operation information acquisition unit 315 acquires operation information for instructing reproduction of video data based on predetermined tag information, operation information for adjusting the reproduction start position of predetermined tag information, or tag information performed by the user. Acquire operation information, etc. for adding .

When the second operation information acquisition unit 315 acquires the operation information for adjusting the playback start position of the predetermined tag information, the tag information update processing unit 316 stores the second tag information storage unit 322 based on the acquired information. The information of the reproduction start position of the corresponding stored tag information is updated. Further, when the second operation information acquisition unit 315 acquires operation information for adding new tag information, the tag information update processing unit 316 adds the new tag information to the second tag information storage unit 322 and stores it. .

When the second operation information acquisition unit 315 acquires the operation information instructing the reproduction of the moving image data by the predetermined tag information, the reproduction control unit 317 reproduces the corresponding moving image data from the corresponding reproduction start position at the second frame rate. is played back by the moving picture playback unit 313. The display unit 33 displays moving image data transmitted from the moving image reproducing unit 313 .

<Operation of moving image processing system 1 according to one embodiment>
Next, the operation of the moving picture processing system 1 according to this embodiment will be described with reference to FIGS. 3 to 10. FIG. In this embodiment, the first time information acquisition unit 131 of the high-speed camera device 10 and the second time information acquisition unit 221 of the tag information generation device 20 acquire reference time information from the NTP server 3 via the communication network 2. ing. As a result, time information is synchronized between the high-speed camera device 10 and the tag information generation device 20 .

First, in FIG. 3, when the imaging unit 11 of the high-speed camera device 10 shoots a moving image, moving image data X (see FIG. 4) generated by shooting is stored in the first moving image data storage unit 12 (S1 ). At that time, the start time information addition unit 132 acquires time information when the imaging unit 11 starts shooting based on the reference time acquired by the first time information acquisition unit 131 . Then, the start time information addition unit 132 adds, as metadata, information about the shooting start time of the moving image data X to the moving image data X stored in the first moving image data storage unit 12 (S2). Here, it is assumed that date information “2021/04/01” and time information “13:37:09” are acquired as information on the shooting start time and added to the moving image data X as metadata.

While the high-speed camera device 10 is shooting a moving image, the tag information generation device 20 generates a tag related to a predetermined timing while looking at the subject being shot or watching the image being shot in real time. Perform an operation that instructs the generation of information. The predetermined timing is the playback start timing for playing back from a desired position of the moving image data X captured and stored by the high-speed camera device 10 .

As an example, while a user watches a baseball practice scene captured by the high-speed camera device 10 in real time on a television device (not shown) or the like, a smart device S (see FIG. 5) serving as the tag information generation device 20 is displayed. will be used to perform an operation for instructing the generation of tag information relating to the pitching timing of the pitcher. Of course, the user may operate the smart device S while directly watching the scene of baseball practice at the location where the high-speed camera device 10 is shooting.

FIG. 5 shows an example of a smart device S having a touch panel 200 as the user interface section 21. As shown in FIG. Displayed on the touch panel 200 are a tag input button 201 that is touch-operated when the user inputs an instruction to generate tag information related to the relevant timing, tag list information 202 and reproduction condition information 203 .

While watching a baseball practice scene, the user touches the tag input button 201 on the touch panel 200 each time the pitcher recognizes the timing at which the pitcher swings back to start pitching, as shown in FIG.

When the user touches the tag input button 201, the first operation information acquisition unit 222 acquires information on the touch operation (S3). When the first operation information acquisition unit 222 acquires the information of the touch operation, the tag information generation unit 223 acquires the time information indicating the timing at which the information of the touch operation was acquired based on the reference acquired by the second time information acquisition unit 221. Acquired based on time information. Then, the tag information generation unit 223 generates tag information including the acquired time information as information of the reproduction start time regarding the touch operation.

The tag information generation unit 223 generates tag information corresponding to the timing each time the user recognizes the timing at which the pitcher's pitching motion starts during video shooting and performs a touch operation. Then, the tag information generation unit 223 generates a tag information table T (see FIG. 7) relating to the pitching scene, which stores the tag information generated until the end of the shooting (S4). The tag information table T is a table in which information such as reproduction start time is associated with each piece of tag information, and may be generated as a CSV file.

Further, when the user performs an operation to specify "10 seconds" as the reproduction time for the tag information in the reproduction condition information 203 of the touch panel 200, the information of the reproduction time of the tag information is stored in the tag information table T. .

FIG. 7 shows an example of the tag information table T generated by the tag information generator 223. As shown in FIG. The tag information table T in FIG. 7 holds first to third tag information relating to each of the three touch operations performed during shooting of the moving image. Specifically, the date information “2021/04/01” and the reproduction start time information “13:37:19” are held as the information of the first tag information by the first touch operation. In addition, date information “2021/04/01” and playback start time information “13:37:43” are held as the information of the second tag information by the second touch operation. Further, date information “2021/04/01” and playback start time information “13:37:58” are held as information of the third tag information by the third touch operation. Also, "10 seconds" is held as reproduction time information of the first to third tag information. The tag information table T generated by the tag information generation section 223 is stored in the first tag information storage section 23 .

As shown in FIG. 5 , information stored in the tag information table T is displayed on the touch panel 200 as tag list information 202 and reproduction condition information 203 .

After the moving image is captured, the moving image data transmission unit 14 of the high-speed camera device 10 transmits the moving image data X stored in the first moving image data storage unit 12 to the moving image reproducing device 30 (S5). In the moving image reproduction device 30, the moving image data acquisition unit 311 acquires the moving image data X transmitted from the high-speed camera device 10, and stores it in the second moving image data storage unit 321 (S6).

Also, the tag information transmission unit 24 of the tag information generation device 20 transmits the tag information table T stored in the first tag information storage unit 23 to the moving image reproduction device 30 (S7). In the moving image reproduction device 30, the tag information acquisition unit 312 acquires the tag information table T transmitted from the tag information generation device 20, and stores it in the second tag information storage unit 322 (S8).

Next, the reproduction start position calculation section 314 calculates reproduction start position information for each piece of tag information in the tag information table T stored in the second tag information storage section 322 . Specifically, the reproduction start position calculation unit 314 acquires information on the first frame rate added as metadata from the moving image data X and information on the second frame rate preset in the moving image reproducing unit 313. Then, for each tag information, the ratio of the first frame rate to the second frame rate is calculated at the first time t1 indicated by the difference between the shooting start time of the moving image data X and the reproduction start time indicated by the corresponding tag information. The multiplied second time t2 is calculated as reproduction start position information.

For example, regarding the first tag information, the reproduction start position calculation unit 314 calculates the first time t1 "10 seconds" from the shooting start time "13:37:09" to the reproduction start time "13:37:19" of the tag information. is multiplied by the ratio "4" of the first frame rate "240 FPS" to the second frame rate "60 FPS" to calculate the second time t2 "40 seconds" as the reproduction start position information.

Similarly, the reproduction start position calculation unit 314 calculates the first time t1 "34 seconds" from the shooting start time "13:37:09" to the tag information time "13:37:43" for the second tag information. is multiplied by the ratio "4" to calculate the second time t2 "136 seconds" as the reproduction start position information. Regarding the third tag information, the first time t1 "49 seconds" from the shooting start time "13:37:09" to the tag information time "13:37:58" is multiplied by the ratio "4". 2 hours t2 "196 seconds" is calculated as the reproduction start position information. As shown in FIG. 8, the reproduction start position calculator 314 adds and updates the calculated first time t1 and second time t2 (reproduction start position information) of each tag information to the tag information table T (S9 ).

After the tag information table T is updated in this manner, a case where the user performs a reproduction operation based on desired tag information will be described. When the user performs an operation to instruct playback based on the first to third tag information of the pitching scene of the video data X on the video playback device 30, the second operation information acquisition unit 315 acquires the information of the operation, and controls the playback. 317.

From the tag information table T of the second tag information storage unit 322, the reproduction control unit 317 selects the reproduction start position information "40 seconds" of the first tag information corresponding to the pitching scene, and the reproduction start position information "136 seconds" of the second tag information. second”, reproduction start position information “196 seconds” of the third tag information, and reproduction time information “10 seconds” of the first to third tag information.

Then, based on the acquired information, the reproduction control unit 317 supplies the moving image reproducing unit 313 with the partial moving image data X1 corresponding to the first tag information and the partial moving image corresponding to the second tag information of the moving image data X shown in FIG. The reproduction of the data X2 and the partial moving image data X3 corresponding to the third tag information is instructed.

Specifically, the partial moving image data X1 corresponding to the first tag information is moving image data for 10 seconds of shooting time from the position where 40 seconds of playback time have elapsed from the beginning of the moving image data X. Further, the partial moving image data X2 corresponding to the second tag information is moving image data for 10 seconds of photographing time from the position where the reproduction time from the head of the moving image data X has elapsed is 136 seconds. Further, the partial moving image data X3 corresponding to the third tag information is moving image data for 10 seconds of photographing time from the position where the reproduction time from the head of the moving image data X has elapsed is 196 seconds.

The moving image reproduction unit 313 cuts out the partial moving image data X1, the partial moving image data X2, and the partial moving image data X3 from the moving image data X stored in the second moving image data storage unit 321, and reproduces these partial moving image data at the second frame rate. The display section 33 is made to reproduce continuously. By performing such processing, only the pitching scene in the moving image data X is extracted and reproduced continuously.

According to the above embodiment, when moving image data captured by a high-speed camera device is played back at a frame rate different from that at the time of shooting by a moving image playback device, a tag information generation device different from that of the high-speed camera device is used to generate the data. It is possible to reproduce from a desired position based on the tag information obtained.

In the above-described embodiment, when transmitting moving image data from the high-speed camera device 10 to the moving image reproducing device 30 and when transmitting tag information from the tag information generating device 20 to the moving image reproducing device 30, wired or wireless communication is used. I explained how to send. However, it is not limited to this, and the moving image data stored in the first moving image data storage unit 12 in the high-speed camera device 10 is stored in a recording medium such as an SD card or a USB memory, and this recording medium is transferred to the moving image reproducing device 30. You may make it mount|wear and move video data. In this case, the high-speed camera device 10 may be configured without the moving image data transmission section 14 .

Similarly, the tag information stored in the first tag information storage unit 23 in the tag information generating device 20 may be saved in a recording medium, and the recording medium may be mounted on the moving image reproducing device 30 to transfer the tag information. good. In this case, the tag information generation device 20 may be configured without the tag information transmission unit 24 .

Further, in the above-described embodiment, when reproducing video data based on tag information, reproduction is started several seconds before the timing at which the user operates the tag information generation device 20 to instruct generation of tag information. sometimes you want to For example, when a baseball practice scene is captured as in the above-described embodiment, and the user performs a touch operation on the smart device S at the timing when the pitcher pitches, the pitching motion is performed when the pitcher swings back as shown in FIG. It recognizes that it has started and performs a touch operation.

However, when reproducing video data based on the tag information generated by this touch operation, there are cases where the user wants to view the video data before the pitcher swings over. In order to cope with such a case, when the reproduction start position calculation unit 314 of the moving image reproducing device 30 calculates the reproduction start position of each tag information, the corresponding tag information is indicated from the shooting start time of the moving image data X. The first time t1 to the time may be calculated as short as a predetermined first adjustment time (for example, about 2 seconds).

In this case, the reproduction start position calculation unit 314 acquires the information of the first adjustment time input by the user to the tag information generation device 20 or the video reproduction device 30 . When the user inputs the information of the first adjustment time to the tag information generation device 20 , the tag information generation device 20 transmits the information of the first adjustment time together with the tag information generation table T to the video playback device 30 .

Then, the reproduction start position calculation unit 314 sets the time obtained by subtracting the first adjustment time from the time from the shooting start time of the moving image data X to the time indicated by the corresponding tag information as the first time t1, and based on this, A second time t2 is calculated. By this processing, the first time t1 is calculated to be 2 seconds shorter than the case of FIG. 8 as shown in FIG. 9 for the tag information table T of FIG. calculated in seconds.

When the tag information table T is updated at the second time t2 calculated in this manner, the reproduction start position of each piece of tag information is more accurate than the case of reproduction without considering the first adjustment time. , the frame rate at the time of shooting is shifted forward by 2 seconds. FIG. 10 shows a reproduced portion (a) in the moving image data X when the frame rate at the time of shooting does not consider the first adjustment time, and a reproduced portion (b) in which the first adjustment time is taken into consideration. The numbers at the bottom of FIG. 10 indicate the corresponding shooting time in the moving image data X in units of seconds.

By adjusting the playback start position in this way, when the partial video data indicated by each piece of tag information is played back, playback can be started before the pitcher swings over. The information of the first adjustment time used for this process can be appropriately changed by the user's operation.

Further, after the reproduction start position calculation unit 314 calculates the reproduction start position information, the user inputs an instruction without shifting the reproduction start position forward or backward by the second adjustment time (for example, 1 second) on the moving image reproducing device 30. , the playback start position may be adjusted.

In this case, the tag information update processing unit 316 acquires the information of the instruction input by the user, and instructs the value of the second time of the tag information in the tag information table T stored in the second tag information storage unit 322. is increased or decreased by the second adjustment time. For example, if the playback start position is shifted forward by the second adjustment time, the second time is reduced by the corresponding time, and if the playback start position is shifted backward by the second adjustment time, the second time is reduced by the corresponding time. increase.

At this time, since the tag information update processing unit 316 increases or decreases the second time by the same value for all the tag information in the tag information table T, the reproduction start positions of the plurality of tag information are set relative to each other. While the time interval remains the same, it shifts forward or backward by a predetermined amount of time.

By performing processing in this way, when the user views the video data reproduced based on the tag information and recognizes that the reproduction start position is deviated from the desired position, the reproduction start position based on the tag information is set to the desired position. It can be adjusted by shifting it back and forth to the position of .

Further, when the user performs an operation to add a new tag to the tag information table T stored in the second tag information storage unit 322, the tag information update processing unit 316 updates new tag information based on the operation. Generate and add to the tag information table T.

In this case, as an operation for adding a new tag, for example, the user causes the display unit 33 to reproduce the moving image data X at the second frame rate, and performs the operation at a desired timing on the moving image reproducing device 30 while viewing the data. An operation is performed to instruct generation of tag information specifying the timing as a new reproduction start time. When the tag information update processing unit 316 acquires the information of the operation, the tag information update processing unit 316 acquires the information of the second time, which is the time from the playback start time of the video data X being played to the specified playback start time, and acquires the information. Tag information having the position in the moving image data X based on the second time as the reproduction start position is generated and stored in the second tag information storage unit 322 . By performing processing in this manner, new tag information can be added later to the tag information table T that has already been generated and stored in the video reproducing device 30 .

Further, in the above-described embodiment, the case where the tag information is generated by the user's operation has been described, but the present invention is not limited to this. A scene may be detected, and the tag information generating device 20 may automatically generate tag information based on time information indicating the timing at which the corresponding scene was detected.

In the above-described embodiment, the high-speed camera device 10 and the tag information generation device 20 acquire time information distributed from the NTP server 3, and the time information between the high-speed camera device 10 and the tag information generation device 20 is obtained. are in sync. The method of synchronizing the time information is not limited to using the time information delivered from the NTP server 3. The high-speed camera device 10 and the tag information generation device 20 may acquire time information based on radio waves received from satellites for a Global Navigation Satellite System (GNSS). GNSS is GPS (Global Positioning System) as an example.

Further, by programming the functional configuration of the moving image reproducing device 30 described above and incorporating it into a computer, it is possible to construct a moving image reproducing program that causes the computer to function as the moving image reproducing device 30 .

1 moving image processing system 2 communication network 3 NTP (Network Time Protocol) server 10 high speed camera device 11 photographing unit 12 first moving image data storage unit 13 camera control unit 14 moving image data transmission unit 20 tag information generation device 21 user interface unit 22 generation Device control section 23 First tag information storage section 24 Tag information transmission section 30 Video playback device 31 CPU
32 storage unit 33 display unit 131 first time information acquisition unit 132 start time information addition unit 200 touch panel 201 tag input button 202 tag list information 203 reproduction condition information 221 second time information acquisition unit 222 first operation information acquisition unit 223 tag information Generation unit 311 Video data acquisition unit 312 Tag information acquisition unit 313 Video playback unit 314 Playback start position calculation unit 315 Second operation information acquisition unit 316 Tag information update processing unit 317 Playback control unit 321 Second video data storage unit 322 Second tag Information storage

Claims (5)

a video data acquisition unit that acquires video data generated at a first frame rate to which information about a shooting start time based on a reference time is added;
a tag information acquisition unit that acquires tag information including the reproduction start time of the video data based on the reference time;
a moving image reproduction unit that reproduces the moving image data at a second frame rate different from the first frame rate;
Playback start position calculation for calculating a playback start position of the moving image data based on the tag information based on a difference between the shooting start time and the playback start time and a ratio between the second frame rate and the first frame rate. Department and
and a reproduction control unit that causes the moving image reproducing unit to reproduce the moving image data at the second frame rate from the reproduction start position when reproduction of the moving image data is instructed by the tag information. playback device. 2. The moving image reproduction according to claim 1, further comprising a tag information update processing unit that updates the information of the reproduction start position based on the acquired information when the information for adjusting the reproduction start position is acquired. Device. When a new playback start time of the moving image data is specified while the moving image data is being played back at the second frame rate, the tag information update processing unit, from the playback start time of the moving image data being played, 2. Acquiring information on a playback time up to a specified new playback start time, and generating tag information having a playback start position at a position within said video data based on said acquired playback time. 3. The moving image playback device according to . An imaging device generates and records moving image data to which information about a shooting start time based on a reference time is added at a first frame rate,
A tag information generating device stores tag information including a reproduction start time of the video data based on the reference time,
A moving image reproducing device that reproduces moving image data at a second frame rate different from the first frame rate acquires the moving image data and the tag information, and calculates the difference between the shooting start time and the reproduction start time, and the second frame rate. Based on the ratio between the frame rate and the first frame rate, a reproduction start position of the moving image data is calculated by the tag information, and when reproduction of the moving image data is instructed by the tag information, the moving image data is reproduced. and reproducing the moving image at the second frame rate from the calculated reproduction start position. to the computer,
a function of acquiring video data generated at a first frame rate to which information about a shooting start time based on a reference time is added;
a function of acquiring tag information including a playback start time of the video data based on the reference time;
a function of reproducing the video data at a second frame rate different from the first frame rate;
a function of calculating a playback start position of the video data based on the tag information based on the difference between the shooting start time and the playback start time and the ratio between the second frame rate and the first frame rate;
and a function of reproducing the moving image data at the second frame rate from the reproduction start position when the reproduction of the moving image data is instructed by the tag information.

Images