JP2010034933A - Image processor, image processing method, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image processor, image processing method and program, for playing back a motion picture while changing a playback speed. <P>SOLUTION: Playback speed information for changing a playback speed during playback of motion picture data being recorded is generated during video recording and stored correspondingly to the motion picture data. When playing back the motion picture data, the motion picture is played back while changing the playback speed of the motion picture data on the basis of the playback speed information. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an image processing apparatus, an image processing method, and a program.

  2. Description of the Related Art Conventionally, techniques for electronically photographing, recording, and reproducing images (moving images) are known. In general, in such a technique, an image is converted into an electric signal using an image sensor such as a CCD, and the converted electric signal is electronically recorded on a magnetic recording medium or the like, and the electric signal recorded electronically is recorded. Is played back by the playback device.

For example, Patent Document 1 is cited as a technique using the above-described technique. In Patent Document 1, slow playback and fast forward playback are realized by arbitrarily setting the number of frames per unit time at the time of shooting and playback, and further, the captured video signal is calculated from the number of frames at the time of shooting. A technique for compressing and recording a moving image without increasing or decreasing is disclosed.
JP 2006-180315 A

  However, the above conventional technique arbitrarily sets the number of frames per unit time before shooting or playback, so that the playback speed can be changed at a plurality of positions for one moving image data. It was not a thing.

  An object of the present invention is to provide an image processing apparatus, an image processing method, and a program capable of reproducing a moving image while changing the reproduction speed.

  The invention described in claim 1 is made to achieve the above object, and in the image processing apparatus, a recording means for recording a moving image, and a reproduction speed at the time of reproducing moving image data recorded by the recording means. Setting means for setting playback speed information for changing the video data, storage means for storing the moving picture data and the playback speed information of the moving picture data set by the setting means in association with each other, and the storage means Control means for performing control to change the reproduction speed at the time of reproduction of the moving image data based on the reproduction speed information stored in the above.

  According to a second aspect of the present invention, in the image processing apparatus according to the first aspect of the present invention, the image processing apparatus further includes photographing means for photographing a moving image, and the setting means includes the reproduction speed information of the moving image data photographed by the photographing means. It is characterized by setting.

  According to a third aspect of the present invention, in the image processing device according to the first or second aspect, the reproduction speed information includes a change frame that is a change point of the reproduction speed and the reproduction speed that is changed by the change frame. And a designated speed to be designated.

  According to a fourth aspect of the present invention, in the image processing device according to any one of the first to third aspects, the control means receives the operation of the setting means while recording the moving image, and the reproduction speed information It is characterized by adding.

  According to a fifth aspect of the present invention, in the image processing apparatus according to any one of the first to fourth aspects, the control unit receives an operation of the setting unit during the reproduction of the moving image data, and the reproduction speed. It is characterized by adding information.

  According to a sixth aspect of the present invention, in the image processing apparatus according to any one of the first to fifth aspects, the image processing apparatus further comprises a deletion unit for deleting the reproduction speed information.

  The invention according to claim 7 is a recording step for recording a moving image, a setting step for setting reproduction speed information for changing a reproduction speed at the time of reproducing the moving image data recorded by the recording step, and the moving image data. And a storage speed for storing the video data playback speed information set in the setting step in association with each other, and a playback speed at the time of playback of the video data based on the playback speed information stored in the storage step An image processing method comprising: a control step for performing control to change the image quality.

  The invention according to claim 8 is a recording function for recording a moving image in a computer, a setting function for setting reproduction speed information for changing a reproduction speed at the time of reproducing moving image data recorded by the recording function, A storage function for storing the moving image data and the reproduction speed information of the moving image data set by the setting function in association with each other, and when reproducing the moving image data based on the reproduction speed information stored by the storage function And a control function for performing control to change the reproduction speed of the program.

  According to the present invention, it is possible to provide an image processing apparatus, an image processing method, and a program capable of reproducing a moving image while changing the reproduction speed.

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

FIG. 1 is a block diagram illustrating a schematic configuration of an image processing apparatus 1 according to the present embodiment.
As shown in FIG. 1, the image processing apparatus 1 includes an image data generation unit 21, a data processing unit 22, and a user interface unit 23.

The image data generation unit 21 includes an optical lens unit 101 and an image sensor 102, and has a function of photographing a subject.
The optical lens unit 101 is configured by a lens that collects light for photographing a subject, and includes a peripheral circuit for adjusting camera setting parameters such as focus, exposure, and white balance.
The image sensor 102 is configured by, for example, a CCD (Charge Coupled Device) or the like, and captures an image formed by the optical lens unit 101 condensing light as digitized image data (image frame). The captured image data is temporarily stored in the memory 201 of the data processing unit 22.
Note that the image data generation unit 21 can perform low-resolution image shooting (preview shooting) and high-resolution image shooting. Low-resolution image shooting, for example, has a low image resolution of about XGA (Extended Graphics Array: 1024 × 768 dots), but can capture moving images and read images at a speed of 30 fps (frames / second). On the other hand, in high-resolution image capturing, for example, image capturing can be performed with the maximum number of pixels that can be captured (for example, 4 million pixels for a camera with 4 million pixels), but the image reading speed is slow. .

The data processing unit 22 includes a memory 201, a video output unit 202, an image processing unit 203, a CPU 204, a program memory 205, and an audio processing unit 206.
The memory 201 temporarily stores the image data captured by the image sensor 102 every time shooting processing is performed. The memory 201 also stores image data necessary for image processing, various flag values, threshold values, and the like. Further, the memory 201 includes a display memory area for storing and reading display image data for displaying an image.
The video output unit 202 reads the display image data stored in the display memory area of the memory 201, generates an RGB signal based on the read display image data, and uses the generated RGB signal as the user interface unit 23. Is output to the liquid crystal display unit 301. In addition, the RGB signal can be externally output via the external interface 303 of the user interface unit 23 to display an image on an external device such as a television, a PC, or a projector.
The image processing unit 203 performs predetermined image processing for image display on the image data temporarily stored in the memory 201. The image data subjected to the image processing is stored in the display memory area of the memory 201 as display image data.

The CPU 204 performs various control operations in accordance with various processing programs for the image processing apparatus 1 stored in the program memory 205.
The program memory 205 stores various programs and data necessary for the operation of the CPU 204. Specifically, a recording control program for setting playback speed information during video recording, a playback control program for setting playback speed information during video playback, and a video A playback program for changing the playback speed based on the playback speed information, an editing program for editing the playback speed information, and the like are stored.

The audio processing unit 206 includes a built-in microphone, an amplifier, an A / D converter, a D / A converter, an amplifier, a built-in speaker, and the like. The sound processing unit 206 converts sound input through the built-in microphone during moving image shooting into a digital signal and outputs the digital signal to the CPU 204. The CPU 204 sequentially stores the transmitted audio data in the memory 201, and stores the stored audio data in the external memory 304 in association with the captured image data.
In addition, the audio processing unit 206 emits sound based on the audio data from the built-in speaker at the time of moving image reproduction, and the CPU 204 causes the liquid crystal display unit 301 to display an image stored in association with the audio data. .

The user interface unit 23 includes a liquid crystal display unit 301, an operation unit 302, an external interface 303, and an external memory 304.
The liquid crystal display unit 301 displays a moving image based on the RGB signals output from the video output unit 23. Specifically, a live view image based on a plurality of image data (image frames) generated by the image data generation unit 21, a moving image stored in the external memory 304 during recording, or the external memory 304 is displayed. The moving image stored in is reproduced and displayed.
Note that the liquid crystal display unit 301 may include a video memory (not shown) that temporarily stores display image data output from the video output unit 202 as appropriate.
The operation unit 302 is a function for the user to perform a predetermined operation in the image processing apparatus 1, and outputs an operation signal corresponding to the user operation to the CPU 21. The operation unit 302 includes, for example, a shutter button, a selection determination button, a playback button, a recording button, and the like. The operation unit 302 includes a “slow from here” button, a “fast forward from here” button, and a “real speed from here” button.
The external interface 303 is a terminal for connection with an external device such as a television, a PC, or a projector, and transmits and receives data via a predetermined communication cable.
The external memory 304 is configured by, for example, a card-type nonvolatile memory (flash memory), a hard disk, or the like, and stores moving image data of a subject image captured by the image data generation unit 21. The external memory 304 stores playback speed information. The reproduction speed information will be described later with reference to FIG.

For example, the image processing apparatus 1 according to the present embodiment has a configuration as illustrated in FIG. 1, so that a moving image can be reproduced while changing the reproduction speed.
That is, an arbitrary playback speed can be easily set at an arbitrary place of the moving image, and the moving image is played while changing the playback speed according to the setting, so that the user can enjoy a pleasant visual effect. it can. For example, it is possible to perform slow playback only at a decisive moment such as a soccer goal scene, or to perform fast forward playback of a redundant part such as a CM.
Also, the playback speed information is additional information associated with the video data, and does not change the video recording frame rate. For example, the part designated for slow playback is returned to the actual speed. The reproduction speed information can be easily changed, which is convenient for the user.

FIG. 2 is a diagram showing a configuration example of the playback speed information. The reproduction speed information is associated with each moving image data as shown in FIG. 9 described later.
As shown in FIG. 2, the playback speed information is composed of items such as “number of information”, “change frame”, and “specified speed”.
The “number of information” represents the total number of pieces of information associated with each other such as “change frame” and “specified speed” stored in the reproduction speed information. “Change frame” represents the value of a frame that is a change point for changing the playback speed during playback of a moving image. As for the “specified speed”, “1” is playback at the actual speed (initial setting), “−5” is slow playback at 1/5 times the actual speed, and “5” is 5 compared with the actual speed. This indicates fast-forward playback at double speed, and is set for each “change frame”.

  The first information shown in FIG. 2 is that the change frame is “1800” and the designated speed is “−5 (slow)”, which is the initial set speed “1 (actual speed)”. This indicates that when the moving image being played back reaches the 1800th frame, the speed is switched to playback at “−5 (slow)”. In the second information shown in FIG. 2, the change frame is “2160” and the designated speed is “1 (actual speed)”. This is the playback speed of “−5” at the 1800th frame. This indicates that the moving image switched to “(slow)” switches to “5 (fast forward)” at the 2160th frame.

When the information shown in FIG. 2 is unraveled, the actual speed (from 1 frame to 1800 frames) → slow (from 1800 frames to 2160 frames) → actual speed (from 2160 frames to 3960 frames) → fast forward (from 3960 frames to 9360 frames) It can be seen that the playback speed changes.
As described above, the reproduction speed information includes a change frame that is a change point of the reproduction speed and a designated speed that designates the reproduction speed to be changed by the change frame. Since the image processing apparatus 1 according to the present embodiment can change the reproduction speed of the moving image data based on the reproduction speed information, it is possible to obtain a pleasant visual effect that is viewed by the user.
Hereinafter, the change in the reproduction speed will be described in detail with reference to FIG.

FIG. 3 is a diagram showing how the playback speed of a moving image changes based on the playback speed information shown in FIG. A specific processing flow from the setting of the playback speed to the playback of the moving image will be described with reference to FIGS.
FIG. 3A shows how playback speed is set during video recording, and what playback is performed during playback based on the setting. Specifically, as shown in the upper part of FIG. 3A, “slow from here” (first information in FIG. 2) at the 1800th frame is “actual speed from here” at the 2160th frame ( The second information in FIG. 2 is “fast forward from here” in the 3960th frame (the third information in FIG. 2) is “real speed from here” in the 9360th frame (the fourth information in FIG. 2). Information) is set. When a moving image is reproduced based on this setting, as shown in the lower part of FIG. 3A, the actual speed (for example, 30 frames / second) from 1 frame to 1800 frames, that is, 1800 ÷ 30 = 60 seconds. The video data recorded in the above is 60 seconds of actual speed playback, and 1800 frames to 2160 frames are slow, that is, (2160-1800) ÷ 30 = the video data recorded in 12 seconds is 1/5 times the speed of 60 seconds. 2160 frames to 3960 frames at the actual speed, that is, (3960-2160) ÷ 30 = the moving image data recorded in 60 seconds is the actual speed playback for 60 seconds, and the 3960 frames to 9360 frames are fast-forwarded. That is, (9360-3960) ÷ 30 = video data recorded in 180 seconds is a high speed of 36 seconds at 5 times speed. Ri in the play, and reproduced.

FIG. 3B shows a state in which the playback speed is set while the moving image is being played, and the playback speed is changed based on the setting. In the upper part of FIG. 3B, as in the upper part of FIG. 3A, 1 frame to 1800 frames are played at actual speed, 1800 frames to 2160 frames are played slowly, and 2160 frames to 3960 frames are played. In the speed playback, settings are shown such that from 3960 to 9360 frames are played back in fast forward playback. When the moving image is reproduced based on the setting, the reproduction as shown in the lower part of FIG. 3A is performed. If the “actual speed from here” button is pressed at the 1980th frame during the playback, as shown in the lower part of FIG. The playback speed switches to "".
As described above, the image processing apparatus 1 according to the present embodiment can set the playback speed during recording or playback. First, the flow of processing relating to the setting of the playback speed during recording will be described with reference to the flowchart of FIG.

FIG. 4 is a flowchart showing an example of a recording control process performed in the image processing apparatus 1. This recording control process is realized by the CPU 204 executing the recording control program stored in the program memory 205 when the user presses the recording button and the moving image recording process is started.
As shown in FIG. 4, in step S11, the designated speed (see FIGS. 2 and 3) is initialized. The initialization of the designated speed is to set the playback speed of the frame (first frame) at the start of recording to the actual speed (30 frames / second).
In step S <b> 12, the designated speed is displayed on the liquid crystal display unit 301. For example, after the designated speed is initialized in step S <b> 11, “actual speed” is displayed on the liquid crystal display unit 301. On the other hand, after the reproduction speed information update process is performed in step S17 described later, the speed designated by the updated reproduction speed information is displayed on the liquid crystal display unit 301.

In step S13, it is determined whether or not “slow from here” designation has been accepted. That is, it is determined whether or not the “throw from here” button of the operation unit 302 is pressed by the user. Here, for example, when the “slow from here” button is pressed at the 1800th frame of the moving image being recorded, the first information in FIG. 2 is written. If the “slow from here” designation is accepted, the process proceeds to step S16, and if the “slow from here” designation is not accepted, the process proceeds to the next step S14.
In step S14, it is determined whether or not “fast forward from here” designation has been accepted. That is, it is determined whether or not the user has pressed the “fast forward from here” button of the operation unit 302. Here, for example, when the “fast forward from here” button is pressed at the 3960th frame of the moving image being recorded, the third information in FIG. 2 is written. If “fast forward from here” designation is accepted, the process proceeds to step S16, and if “fast forward from here” designation is not accepted, the process proceeds to the next step S15.
In step S15, it is determined whether designation of “actual speed from here” has been accepted. That is, it is determined whether or not the “actual speed from here” button of the operation unit 302 is pressed by the user. Here, for example, when the “actual speed from here” button is pressed at the 9360th frame of the moving image being recorded, the fourth information in FIG. 2 is written. When the “real speed from here” designation is accepted, the process proceeds to the next step S16, and when the “real speed from here” designation is not accepted, the process proceeds to step S18.

In step S16, it is determined whether or not the currently specified speed (the speed displayed in step S12) is the same as the speed specified this time in steps S13 to S15. If the current designated speed is the same as the current designated speed, the reproduction speed information is not changed, and it is not necessary to update the information again. Therefore, the process proceeds to step S13, where the current designated speed is If it is different from the speed specified this time, the process proceeds to the next step S17.
In step S17, playback speed information update processing is performed. Hereinafter, the process will be described with reference to the flowchart of FIG.

As shown in FIG. 5, in step S31, 1 is added to the value of the information number of the reproduction speed information shown in FIG.
In step S32, the value of the current frame (when the button pressing operation is accepted) is added to the column of the change frame of the reproduction speed information.
In step S33, the playback speed specified this time is added to the column of the specified speed associated with the changed frame added in step S32.

Next, in step S18 of FIG. 4, it is determined whether or not the moving image recording process has ended. If the recording has been completed, the process proceeds to the next step S19. If the recording has not been completed, the process proceeds to step S13.
In step S19, the latest reproduction speed information is stored in the external memory 304.

  As described above, the CPU 204 executes the recording control program to perform processing for receiving the operation of the operation unit and adding the playback speed information while recording a moving image. Thereby, the user can easily set an arbitrary reproduction speed at an arbitrary place of the moving image, which is convenient for the user.

Further, the flow of processing relating to the setting of the playback speed during playback will be described with reference to the flowchart of FIG.
FIG. 6 is a flowchart showing an example of the reproduction control process performed in the image processing apparatus 1. This playback control process is realized by the CPU 204 executing the playback control program stored in the program memory 205 when the playback button is pressed by the user and the playback of the moving image is started.
As shown in FIG. 6, in step S41, the playback speed is initialized. The initialization of the playback speed is to set the playback speed at the start of playback (first frame) to the actual speed (30 frames / second).
In step S42, the reproduction process is activated. The reproduction process will be described in detail later with reference to FIG. 7, but is a separate process performed simultaneously with the reproduction control process.
In step S43, the speed designated by the reproduction speed information is displayed on the liquid crystal display unit 301. Specifically, “actual speed” is displayed on the liquid crystal display unit 301.

In step S44, it is determined whether designation of “slow from here” has been accepted. That is, it is determined whether or not the “throw from here” button of the operation unit 302 is pressed by the user. If the “slow from here” designation is accepted, the process proceeds to step S47. If the “slow from here” designation is not accepted, the process proceeds to the next step S45.
In step S45, it is determined whether or not “fast forward from here” designation has been accepted. That is, it is determined whether or not the user has pressed the “fast forward from here” button of the operation unit 302. If the “fast forward from here” designation is accepted, the process proceeds to step S47. If the “fast forward from here” designation is not accepted, the process proceeds to the next step S46.
In step S46, it is determined whether designation of “actual speed from here” has been accepted. That is, it is determined whether or not the “actual speed from here” button of the operation unit 302 is pressed by the user. When the “real speed from here” designation is accepted, the process proceeds to the next step S47, and when the “real speed from here” designation is not accepted, the process proceeds to step S50.

In step S47, it is determined whether or not the currently designated (displayed) playback speed is the same as the speed currently designated in steps S44 to S46. If the current designated speed is the same as the current designated speed, the reproduction speed information is not changed, and it is not necessary to update the information again. Therefore, the process proceeds to step S44, where the current designated speed is If it is different from the speed specified this time, the process proceeds to the next step S48.
In step S48, playback speed information update processing (see FIG. 5) is performed.
In step S49, the reproduction speed designated this time is notified to the reproduction process started in step S42. When the reproduction speed is notified, the process proceeds to step S44.

In step S50, it is determined whether or not the reproduction of the moving image has ended. If the reproduction has been completed, the process proceeds to the next step S51. If the reproduction has not been completed, the process proceeds to step S43.
In step S51, the latest playback speed information is stored in the external memory 304.

  As described above, the CPU 204 executes the playback control program to perform a process of adding the playback speed information by receiving the operation of the setting unit during playback of the moving image data. Thereby, the user can easily set an arbitrary reproduction speed at an arbitrary place of the moving image, which is convenient for the user.

FIG. 7 is a flowchart illustrating an example of a reproduction process performed in the image processing apparatus 1. This reproduction process is realized by the CPU 204 executing the reproduction program stored in the program memory 205 in step S42 of the reproduction control process shown in FIG. Note that this playback process is based on the assumption that the playback speed is changed with reference to the playback speed information stored in the external memory 304.
As shown in FIG. 7, in step S61, reproduction of a moving image is started.

In step S62, it is determined whether or not the reproduction speed is notified by the notification process performed in step S49 of the reproduction control process shown in FIG. If the playback speed is notified, the process proceeds to step S64. If the playback speed is not notified, the process proceeds to the next step S63.
In step S63, it is determined whether or not a playback speed has been designated. Specifically, it is determined whether or not a change frame set in the reproduction speed information has been reached. When the reproduction speed is designated, the process proceeds to the next step S64, and when the reproduction speed is not designated, the process proceeds to step S66.
In step S64, the playback speed is updated to the speed notified in step S62 (“YES” in step S62) or the speed specified in step S63 (“YES” in step S63).
In step S65, the reproduction speed updated in step S64 is displayed on the liquid crystal display unit 301.

In step S66, playback is performed at the playback speed specified by the playback speed information.
In step S <b> 67, the reproduced image is displayed on the liquid crystal display unit 301.

  In step S68, it is determined whether the reproduction of the moving image has ended. If the reproduction has been completed, the reproduction process is terminated. If the reproduction has not been completed, the process proceeds to step S62.

FIG. 8 is a flowchart illustrating an example of editing processing performed in the image processing apparatus 1. This editing process is realized by the CPU 204 executing the editing program stored in the program memory 205 when the user presses the editing button.
As shown in FIG. 8, in step S71, reproduction speed information is displayed in a list on the liquid crystal display unit 301. The user selects information to be edited from the reproduction speed information displayed in a list.

In step S72, it is determined whether or not “delete” designation has been accepted. That is, it is determined whether or not the user has pressed the “delete” button of the operation unit 302. If “deletion” designation is accepted, the process proceeds to the next step S73, and if “deletion” designation is not accepted, the process proceeds to step S74.
In step S73, the playback speed information selected in step S71 is deleted.

  In step S74, it is determined whether or not the editing of the reproduction speed information has been completed. If the editing is finished, the editing process is finished. If the editing is not finished, the process proceeds to step S71, and the editing process is repeated.

  As described above, the CPU 204 performs a process of deleting the reproduction speed information by executing the editing program. Thus, the user can easily delete unnecessary reproduction speed information, which is convenient for the user.

  As mentioned above, although concretely demonstrated based on embodiment which concerns on this invention, this invention is not limited to the said embodiment, It can change in the range which does not deviate from the summary.

  For example, in the above-described embodiment, the moving image data and the reproduction speed information stored separately are associated with each other on a one-to-one basis as shown in FIG. 9, but the reproduction speed information is incorporated in the moving image data. You may make it handle as one file.

  In the above embodiment, the reproduction is performed based on the reproduction speed information. For example, a mode in which the reproduction speed information is temporarily ignored may be provided.

  In the above embodiment, as shown in FIG. 2, the designated playback speed is divided into three stages of “−5 (slow)”, “1 (actual speed)”, and “5 (fast forward)”. However, it may be divided into more stages (for example, five stages).

  In the above embodiment, “number of information”, “change frame”, and “specified speed” are provided as items of playback speed information. For example, by adding an item of “number of playback”, the number of playback times You may enable it to specify.

1 is a block diagram illustrating a schematic configuration of an image processing apparatus 1 according to the present embodiment. It is the figure shown about one structural example of the reproduction speed information. It is the figure shown about a mode that reproduction speed changes based on reproduction speed information. It is the flowchart shown about an example of the video recording control process. It is the flowchart shown about an example of the reproduction speed information update process. It is the flowchart shown about an example of the reproduction | regeneration control processing. It is the flowchart shown about an example of the reproduction | regeneration processing. 10 is a flowchart illustrating an example of editing processing. It is the figure shown about matching with moving image data and reproduction speed information.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Image processing apparatus, 21 ... Image data generation part, 101 ... Optical lens part, 102 ... Image sensor, 22 ... Data processing part, 201 ... Memory, 202 ... Video output unit 203 ... Image processing unit 204 ... CPU 205 ... Program memory 206 ... Audio processing unit 23 ... User interface unit 301 ... Liquid crystal display unit 302 ... Operation unit 303 ... External interface 304 ... External memory

Claims (8)

A recording means for recording a video;
Setting means for setting playback speed information for changing the playback speed at the time of playback of the video data recorded by the recording means;
Storage means for storing the moving picture data and the reproduction speed information of the moving picture data set by the setting means in association with each other;
An image processing apparatus comprising: control means for performing control to change a reproduction speed at the time of reproduction of the moving image data based on the reproduction speed information stored by the storage means. It further includes a photographing means for photographing a movie,
The image processing apparatus according to claim 1, wherein the setting unit sets the reproduction speed information of the moving image data photographed by the photographing unit.   3. The image according to claim 1, wherein the playback speed information includes a change frame that is a change point of the playback speed and a designated speed that specifies the playback speed to be changed in the change frame. Processing equipment.   4. The image processing apparatus according to claim 1, wherein the control unit is configured to add the reproduction speed information by receiving an operation of the setting unit during recording of the moving image. 5.   5. The image processing apparatus according to claim 1, wherein the control unit receives the operation of the setting unit during reproduction of the moving image data and adds the reproduction speed information. 6.   6. The image processing apparatus according to claim 1, further comprising a deletion unit for deleting the reproduction speed information. A recording step for recording a video;
A setting step for setting playback speed information for changing the playback speed at the time of playback of the video data recorded by the recording step;
A storage step of storing the moving image data and the reproduction speed information of the moving image data set in the setting step in association with each other;
A control step of performing control to change a playback speed at the time of playback of the moving image data based on the playback speed information stored in the storage step. On the computer,
A recording function for recording videos,
A setting function for setting playback speed information for changing the playback speed at the time of playback of the video data recorded by the recording function;
A storage function for storing the moving image data and the reproduction speed information of the moving image data set by the setting function in association with each other;
And a control function for performing control to change a reproduction speed at the time of reproduction of the moving image data based on the reproduction speed information stored by the storage function.

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