JP4355857B2 - Movie recording apparatus, file creation method, and program - Google Patents

Description

  The present invention relates to a moving image recording apparatus including an imaging device such as a digital camera having a function of shooting a moving image with sound, and an audio file creation method and program used in the moving image recording apparatus.

  In recent years, the number of digital cameras capable of recording not only still image data but also moving image data including sound has increased due to the increase in memory capacity and the progress of information compression technology.

This type of digital camera has a still image shooting mode and a moving image shooting mode, and captures still image data or moving image data with sound in accordance with a shutter operation in accordance with a mode change by a switch operation, and a recording medium such as a flash memory. (See, for example, Patent Document 1).
JP 2002-300445 A

  However, when moving image shooting with sound is performed in the moving image shooting mode, moving image data and sound data are integrated into one file according to a specific file format and recorded as a moving image file with sound on a recording medium. For this reason, the reproduction of the file recorded on the recording medium requires a moving image reproduction function corresponding to a specific file format, and there is a problem that it cannot be flexibly dealt with when only reproduction of audio data is necessary. there were.

  The present invention has been made in view of the above points, and an object thereof is to provide a moving image recording apparatus, a file creation method, and a program that can obtain only audio data as a separate file separately from a moving image file with audio. .

A moving image recording apparatus according to claim 1 of the present invention is a shooting processing unit that performs shooting processing of a moving image with sound, and a moving image file with audio in a predetermined format based on moving image data and audio data obtained by the shooting processing unit. A file creation means for creating an audio file of a predetermined format based on the audio data at the same time as the creation, and a recording means for individually recording the moving image file with audio and the audio file created by the file creation means It is characterized by.

According to such a configuration, an audio file is created on the basis of audio data obtained by shooting at the same time as the moving image file with sound by moving image shooting with sound, and these files are individually recorded on the recording medium.

Further, according to a second aspect of the present invention, in the moving picture recording apparatus according to the first aspect, the image recording apparatus further includes a designation unit that designates creation of an audio file, and the file creation unit designates creation of the audio file by the designation unit. In this case, the audio file creation process is performed separately from the moving image file with audio .

According to such a configuration, creation of an audio file can be arbitrarily designated, and an audio file can be obtained separately from the moving image file with audio according to the designation.

According to a third aspect of the present invention, there is provided a first recording unit in which a moving image file with audio is recorded, an audio extracting unit that extracts audio data from the moving image file with audio recorded in the first recording unit, Designating means for designating still image data to be filed in still image data of each frame included in the video data related to the video file with audio, and stillness of the frame designated by the designating means from the video file with audio A still image extracting means for extracting image data, a second recording means, a sound file of a predetermined format based on the sound data extracted by the sound extracting means, and the still image extracted by the still image extracting means A still image file of a predetermined format is created based on the image data, and the audio file and the still image file are associated with each other Characterized by comprising a file creating means for recording the recording means.

According to such a configuration, still image data and audio data of an arbitrary frame are extracted from a moving image file with audio and converted into a file, and the still image data with audio is recorded by associating and recording these files. It can be obtained in the form of a file.

A file creation method according to claim 4 of the present invention is a file creation method used in a moving image recording apparatus, and includes a step of setting a moving image shooting mode, and an audio with a predetermined timing according to the setting of the moving image shooting mode. A step of performing a shooting process of a moving image, and a moving image file with audio in a predetermined format based on moving image data and audio data obtained by the shooting process, and at the same time, an audio file of a predetermined format is generated based on the audio data And a step of individually recording the created moving image file with sound and sound file .

According to such a file creation method , the same effects as those of the first aspect of the invention can be achieved by executing the processing according to each step.

A program according to claim 5 of the present invention is a program for creating a file for use in a computer that controls a moving picture recording apparatus, the function for setting a moving picture shooting mode in the computer, and the setting of the moving picture shooting mode. Accordingly, a function for performing shooting processing of a moving image with sound at a predetermined timing, and a moving image file with sound in a predetermined format based on moving image data and sound data obtained by the shooting processing, and at the same time based on the sound data And a function of creating a sound file of a predetermined format and a function of individually recording the created moving image file with sound and sound file .

According to such a program , the same effect as that of the first aspect of the invention can be achieved when the computer executes the program for realizing each function.

  According to the present invention, since the audio file is individually created based on the audio data included in the audio-attached moving image data, only the audio data can be reproduced without the need for the moving image reproduction function.

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

(First embodiment)
FIG. 1 is a diagram showing an external configuration when a digital camera is taken as an example of an image recording apparatus according to the first embodiment of the present invention. FIG. 1 (a) is mainly a front configuration, and FIG. 1 (b). FIG. 3 is a perspective view mainly showing a configuration of a back surface.

  The digital camera 1 is an image pickup apparatus having a function capable of shooting a moving image with sound. A photographing lens 3, a self-timer lamp 4, an optical viewfinder window 5, and a strobe light emission are provided on the front surface of a substantially rectangular thin plate body 2. A power key 8 and a shutter key 9 are provided on the right end of the upper surface (for the user).

  The power key 8 is a key operated every time the power is turned on / off, and the shutter key 9 is a key for instructing a photographing timing at the time of photographing.

  Also, on the back of the digital camera 1, a shooting mode (R) key 10, a playback mode (P) key 11, an optical viewfinder 12, a speaker unit 13, a macro key 14, a strobe key 15, a menu (MENU) key 16, a ring A key 17, a set (SET) key 18, a display unit 19, and the like are provided.

  The shooting mode key 10 is operated automatically from the power-off state to automatically turn on the power and shift to the still image shooting mode. On the other hand, by repeatedly operating from the power-on state, the still image mode and the moving image mode are switched. Set cyclically. The still image mode is a mode for photographing a still image. The moving image mode is a mode for shooting a moving image. In particular, in this embodiment, it is assumed that a moving image with sound can be shot.

  The shutter key 9 is commonly used for these photographing modes. That is, in the still image mode, a still image is taken at the timing when the shutter key 9 is pressed. In the moving image mode, shooting of a moving image is started at a timing when the shutter key 9 is pressed, and shooting of the moving image is ended when the shutter key 9 is pressed again.

  When the playback mode key 11 is operated from the power-off state, the playback mode key 11 is automatically turned on to enter the playback mode.

  The macro key 14 is operated when switching between normal shooting and macro shooting in the still image shooting mode. The strobe key 15 is operated when switching the light emission mode of the strobe light emitting unit 6. The menu key 16 is operated when selecting various menu items. The ring key 17 is integrally formed with item selection keys in the up, down, left, and right directions, and the set key 18 located in the center of the ring key 17 sets the item selected at that time. To operate.

  The display unit 19 is composed of a color liquid crystal panel with a backlight, and displays a through image on the monitor as an electronic viewfinder in the photographing mode, and reproduces and displays the selected image and the like in the reproduction mode.

  Although not shown, the digital camera 1 has a memory card slot for attaching / detaching a memory card used as a recording medium, a serial interface connector for connecting to an external personal computer, etc., for example, USB (Universal). (Serial Bus) connector and the like are provided.

  FIG. 2 is a block diagram showing an electronic circuit configuration of the digital camera 1.

  In the digital camera 1, a lens optical system 22 including a focus lens and a zoom lens (not shown) constituting the photographing lens 3 is provided so as to be movable within a predetermined range in the optical axis direction by driving a motor 21. A CCD 23, which is an image sensor, is disposed behind the optical axis. The CCD 23 receives light passing through the photographing lens 3 and acquires image data corresponding to the amount of received light.

  In the recording mode, which is the basic mode, the CCD 23 is scanned and driven by a timing generator (TG) 24 and a driver 25, and outputs a photoelectric conversion output corresponding to a light image formed at regular intervals for one screen.

  The photoelectric conversion output of the CCD 23 is appropriately gain-adjusted for each primary color component of RGB in the state of an analog value signal, sampled and held by the sample hold circuit 26, and converted into digital data by the A / D converter 27. The In the color process circuit 28, color process processing including pixel interpolation processing and γ correction processing is performed to generate digital luminance signals Y and color difference signals Cb, Cr, which are sent to a DMA (Direct Memory Access) controller 29. Is output.

  The DMA controller 29 once uses the luminance signal Y and the color difference signals Cb and Cr output from the color process circuit 28 by using the composite synchronization signal, memory write enable signal, and clock signal from the color process circuit 28 once. And the DMA transfer to the DRAM 31 used as the buffer memory via the DRAM interface (I / F) 30.

  The control unit 32 includes a microcomputer including a CPU, a ROM that stores an operation program executed by the CPU, and a RAM that is used as a work memory. The control unit 32 controls the entire digital camera 1, and after the DMA transfer of the luminance and color difference signals to the DRAM 31 is completed, the luminance and color difference signals are read from the DRAM 31 via the DRAM interface 30 and the VRAM controller 33 is read. To the VRAM 34.

  The digital video encoder 35 periodically reads the luminance and color difference signals from the VRAM 34 via the VRAM controller 33, generates a video signal based on these data, and outputs the video signal to the display unit 19.

  As described above, the display unit 19 functions as a monitor display unit (electronic finder) at the time of shooting. By performing display based on the video signal from the digital video encoder 35, the display unit 19 captures from the VRAM controller 33 at that time. An image based on the image information is displayed in real time.

  As described above, when the image at that time is displayed in real time as the monitor image on the display unit 19, for example, when the shutter key 9 is pressed at a timing at which still image shooting is desired, a trigger signal is generated.

  In response to the trigger signal, the control unit 32 immediately stops the path from the CCD 23 to the DRAM 31 immediately after the DMA transfer of the luminance and color difference signals for one screen captured from the CCD 23 to the DRAM 31 is completed. , Transition to the record storage state.

  In this recording and storage state, the control unit 32 outputs the luminance and color difference signals for one frame written in the DRAM 31 to 8 pixels × 8 pixels for each of Y, Cb, and Cr components via the DRAM interface 30. The data is read out in units called basic blocks, written in a JPEG (Joint Photographic Coding Experts Group) processing block existing in the image processing unit 37, and the image processing unit 37 uses ADCT (Adaptive Discrete Cosine Transform: adaptive discrete cosine transform). ), The data is compressed by a process such as Huffman coding, which is an entropy coding method.

  The obtained code data is read out from the image processing unit 37 as a data file of one image and written in the recording memory 38. The memory 38 includes a memory card that is detachably mounted as a recording medium in addition to an internal memory such as a flash memory built in the main body in advance. With the compression processing of the luminance and color difference signals for one frame and the completion of writing all the compressed data to the memory 38, the control unit 32 activates the path from the CCD 23 to the DRAM 31 again.

  The control unit 32 is further connected with an audio processing unit 39, a USB interface (I / F) 40, and a strobe driving unit 41.

  The audio processing unit 39 performs input / output processing of audio data including A / D conversion and D / A conversion. When shooting a moving image, the analog processing unit 39 receives an analog input from the microphone unit (MIC) 7 in synchronization with the moving image data. Digitally capture audio signals. At the time of reproduction, the audio data separated from the moving image data with audio is converted into analog data and output through a speaker unit (SP) 13 provided on the back side of the digital camera 1.

  The USB interface 40 performs communication control when image data and other information are transmitted / received to / from another information terminal device such as a personal computer connected by wire via a USB connector. The strobe drive unit 41 charges a strobe capacitor (not shown) at the time of shooting, and then drives the strobe light emitting unit 6 to flash based on control from the control unit 32.

  In addition to the shutter key 9 described above, the key input unit 36 includes a power key 8, a shooting mode key 10, a playback mode key 11, a macro key 14, a strobe key 15, a menu key 16, a ring key 17, and a set key. 18 and the like, and signals accompanying these key operations are sent directly to the control unit 32.

  Further, when shooting a moving image instead of a still image, the moving picture processing group (MPEG) or motion is a moving image processing block existing in the image processing unit 37 described above when the shutter key 9 is pressed. -Captured moving image data is compressed and recorded in the memory 38 by a method such as JPEG (Joint Photographic Experts Group). In this case, in the case of moving image recording with sound, the sound data is integrated into the compressed moving image data and recorded in the memory 38 as a moving image file with sound. When the shutter key 9 is operated again, the recording of the moving image data is finished.

  On the other hand, in the playback mode, which is the basic mode, the control unit 32 selectively reads out the image data recorded in the memory 38, and the image processing unit 37 compresses the image data in a procedure that is completely opposite to the procedure of data compression in the recording mode. Decompress the image data. The decompressed image data is held in the DRAM 31 via the DRAM interface 30, and then the content held in the DRAM 31 is stored in the VRAM 34 via the VRAM controller 33. The image data is periodically read out from the VRAM 34. A video signal is generated and reproduced and output by the display unit 19.

  If the selected image data is not a still image but a moving image, the multiple frames of still image data that make up the moving image data are played back and displayed sequentially in chronological order, and all the still image data is played back. For example, the top still image data is displayed until the next playback instruction is given.

  Next, the operation of the first embodiment will be described.

  Note that the processes shown in the following flowcharts are executed when the control unit 32 which is a microcomputer mounted on the digital camera 1 reads a program stored in a ROM or the like. The same applies to the processing of other embodiments described later, and is executed by the control unit 32 reading a program for realizing these processing.

(Movie shooting process)
First, shooting processing of a moving image with sound will be described.

  FIG. 3 is a flowchart showing the operation of the shooting process of the moving image with sound of the digital camera 1 in the first embodiment of the present invention.

  When the moving image shooting mode is set by the operation of the shooting mode key 10 (Yes in Step A11), the control unit 32 determines the timing of the moving image with sound at the timing when the shutter key 9 is pressed (Yes in Step A12). The photographing process is started (step A13).

  In the moving image capturing process with sound, moving image data obtained through the imaging system including the CCD 23 is sequentially compressed by the image processing unit 37, and the sound data obtained through the microphone unit 7 and the sound processing unit 39 at that time Integrate with video data. Then, for example, a moving image file with audio is created according to a predetermined file format such as AVI (Audio Visual Interleave), and is recorded in the memory 38 (step A14).

  This photographing process is continuously performed until the shutter key 9 is pressed again. When the shutter key 9 is pressed again (Yes in step A15), the control unit 32 detects this and ends the photographing process here.

(Audio file creation process)
Next, an audio file creation process will be described.

  FIG. 4 is a flowchart showing the operation of the audio file creation process of the digital camera 1 in the embodiment. This voice file creation process is executed by selecting “voice file creation mode” by operating the menu key 16, for example.

  In accordance with the selection of “audio file creation mode”, the control unit 32 first displays a list of moving image files with audio currently recorded in the memory 38 on the display unit 19, etc. The attached video file is selected (step B11). Note that the file list display method and file selection method are not particularly limited, and a general method is used.

  When the moving image file with audio to be processed is selected, the control unit 32 performs reproduction processing of moving image data and audio data constituting the selected moving image file with audio (step B12). In this case, for the moving image data, a plurality of still image data constituting the moving image data is displayed on the display unit 19 at a predetermined frame rate, and the audio data is synchronized with the image display through the audio processing unit 39 through the speaker. Output from the unit 13.

  Here, in the “sound file creation mode”, a function for creating a still image file with sound (hereinafter referred to as a still image file creation function with sound) and an arbitrary portion of the sound data are designated as a file. Is provided with a function (hereinafter referred to as a voice part specifying function). The user can arbitrarily select these functions when setting the “voice file creation mode”.

  When the above-described still image file creation function with audio and the audio part designation function are not selected (No in Step B13, No in Step B14), the control unit 32 performs the audio included in the moving image file with audio being reproduced. Audio data is extracted with the entire range of data as an extraction target (step B15). Then, the control unit 32 converts the extracted voice data into a file in a predetermined format, and records the voice file in the memory 38 according to the file name designated by the user (step B17).

  If the audio part designation function is selected (Yes in step B14), the control unit 32 partially extracts audio data within a range designated by the user from the moving image file with audio being reproduced. (Step B16).

  Note that, as a designation method at this time, by pressing a specific key (for example, the set key 18) assigned for voice part designation during voice reproduction, the voice data during the period in which the key is depressed is displayed. There are methods to extract.

  The control unit 32 converts the voice data partially extracted in this way into a file in a predetermined format as described above, and records the voice file in the memory 38 according to the file name designated by the user (step B17). ).

  On the other hand, when the still image file creation function with audio is selected (Yes in step B13), the control unit 32 performs still image data of the frame specified by the user from the moving image data of the audio file with audio being reproduced. Is extracted (step B18).

  As a designation method at this time, a method of extracting still image data at the timing of pressing a specific key (for example, shutter key 9) assigned for still image designation during moving image reproduction. and so on.

  At this time, if the audio part designation function is not selected (No in Step B19), the control unit 32 extracts the audio data with the entire range of the audio data included in the audio video file being reproduced being extracted. (Step B20). Then, the control unit 32 converts the still image data extracted in step B18 and the audio data extracted in step B20 into files in predetermined formats, and the still image file and the audio file are designated as a common file designated by the user. The names are associated with each other and recorded in the memory 38 (step B22).

  When the audio part specifying function is selected (Yes in step B19), the control unit 32 partially extracts audio data within a range specified by the user from the moving image file with audio being reproduced. (Step B21). Then, the control unit 32 files the still image data extracted in step B18 and the audio data partially extracted in step B21 in predetermined formats, and the still image file and the audio file are designated by the user. The common file names are associated with each other and recorded in the memory 38 (step B22).

  FIG. 5 is a diagram showing the relationship between the files in the memory 38.

  Now, the moving image file with sound “20040501.aaa” already recorded in the memory 38 will be described as a processing target. Note that “aaa” added to the file name “20040501” indicates the extension of the moving image file with audio.

  This moving image file with audio “20040501.aaa” includes moving image data and audio data together with header information. The moving image data is composed of a plurality of still image data arranged in time series. During reproduction of the moving image file with audio, audio data is extracted from the file, and the audio data is filed in a predetermined format and recorded as a separate file in the memory 38.

  “20040502.bbb” in the figure is an audio file created from the moving image file with audio “20040501.aaa”. The file name “20040502” is arbitrarily designated by the user. “Bbb” is an extension of the audio file.

  On the other hand, when creating a “still image file + audio file”, still image data of an arbitrary frame is extracted from the moving image file with sound “20040501.aaa”, and the still image data is filed in a predetermined format. At the same time, the audio data is extracted from the moving image file with audio “20040501.aaa” and is converted into a file in a predetermined format. Then, a file name common to these files is used and recorded in the memory 38.

  “20040503.ccc” and “20040503.bbb” in the figure are still image files and audio files created from the moving image file with audio “20040501.aaa”. The file name “20040503” is arbitrarily designated by the user and used in common for both files. “Bbb” is the extension of the audio file, and “ccc” is the extension of the still image file. In this case, by making the file names of the still image file and the audio file common, these files can be managed as one still image data with audio, and the file name “20040503” can be used during reproduction. The still image file and the audio file can be read and reproduced at the same time.

  In this way, audio data is extracted from a video file with audio obtained by video recording with audio, and an audio file is created as a separate file based on the audio data, so there is no need for a video playback function, Only audio data can be played back. Therefore, it is convenient when the audio data is reproduced by bringing it into another device such as a mobile phone which does not have a moving image reproduction function.

  Also, still image data and audio data of arbitrary frames can be extracted from video files with audio, converted into files, and these files are recorded in association with each other to obtain still image data with audio in the form of a file. Can do.

  Here, the description has been given on the assumption that the audio file created based on the moving image file with sound and the still image file and the sound file constituting the still image data with sound are recorded in the same memory 38 as the moving image file with sound. However, these created files may be recorded in another recording medium.

  In addition, the sound file creation processing is performed using the sound-added moving image file obtained by the photographing process of the digital camera 1 as a processing target. For example, an arbitrary sound-added moving image file is acquired from an external terminal, It is also possible to create an audio file using a moving image file with audio.

(Second Embodiment)
Next, a second embodiment of the present invention will be described.

  In the first embodiment, an audio file is created using an existing movie file with audio. In the second embodiment, an audio file is created simultaneously during shooting of a movie with audio. And

  Since the apparatus configuration is the same as that of the first embodiment, the difference in processing will be described here.

  FIG. 6 is a flowchart showing the operation of the shooting process of the moving image with sound of the digital camera 1 in the second embodiment of the present invention.

  When the moving image shooting mode is set by operating the shooting mode key 10 (Yes in Step C11), the control unit 32 determines whether or not to create an audio file (Step C12). This is realized by, for example, displaying a menu screen when setting the moving image shooting mode to allow the user to select whether or not to create an audio file.

  When the audio file is not created, that is, when the user does not select the creation of the audio file on the menu screen (No in step C12), the control unit 32 performs normal shooting as shown in FIG. Only a moving image file with sound is created by the processing, and this is recorded in the memory 38 (step C13).

  On the other hand, when creating an audio file, that is, when the user selects creation of an audio file on the menu screen (Yes in step C12), the control unit 32 creates an audio file separately from the video file with audio. Perform the creation process simultaneously.

  That is, the control unit 32 starts the shooting process of the moving image with sound at a timing when the shutter key 9 is pressed (Yes in Step C14) (Step C15).

  As described above, in this shooting process of moving images with sound, moving image data obtained through the imaging system including the CCD 23 is sequentially compressed by the image processing unit 37 and then obtained through the microphone unit 7 and the sound processing unit 39. Audio data to be integrated into the moving image data. Then, for example, a moving image file with audio is created according to a predetermined file format such as AVI and is recorded in the memory 38 (step C16).

  Further, simultaneously with the creation of the moving image file with audio, an audio file of a predetermined format is created based on the audio data, and this audio file is recorded in the memory 38 as a file different from the moving image file with audio (step C17). ). In this case, two types of files are individually created in the memory 38, for example, a moving image file with audio “20040501.aaa” and an audio file “20040501.bbb”.

  This photographing process is continuously performed until the shutter key 9 is pressed again. When the shutter key 9 is pressed again (Yes in step C18), the control unit 32 detects this and ends the photographing process here.

  As described above, since an audio file can be obtained simultaneously with a video file with audio when shooting a video with audio, in addition to the effects of the first embodiment, there is no need to create an audio file from the video file with audio. There is an advantage that it can be omitted.

  In each of the embodiments, the digital camera has been described as an example. However, the present invention is not limited to this, and any electronic device having an imaging function such as a mobile phone with a camera can be applied. It is. Further, as in the first embodiment, the method for creating an audio file from existing video data with audio does not particularly require an imaging function. For example, at least a video such as a personal computer or a PDA (Personal Digital Assistant) is used. Any device may be used as long as it has a data recording function.

  In addition, the present invention is not limited to the above-described embodiments as they are, and can be embodied by modifying the components without departing from the scope of the invention in the implementation stage. Various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the respective embodiments. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined.

  In addition, the method described in the above-described embodiment can be applied to a recording medium such as a magnetic disk (flexible disk, hard disk, etc.), an optical disk (CD-ROM, DVD, etc.), a semiconductor memory, etc. as a program that can be executed by a computer. The program can be written and applied to various apparatuses, or the program itself can be transmitted through a transmission medium such as a network and applied to various apparatuses. A computer that implements this apparatus reads a program recorded on a recording medium or a program provided via a transmission medium, and performs the above-described processing by controlling operations by this program.

FIGS. 1A and 1B are diagrams showing an external configuration when a digital camera is taken as an example of an image recording apparatus according to a first embodiment of the present invention. FIG. 1A is mainly a front configuration, and FIG. The perspective view which shows the structure of a back surface. FIG. 2 is a block diagram showing an electronic circuit configuration of the digital camera in the embodiment. 6 is an exemplary flowchart illustrating an operation of a shooting process of a moving image with sound of the digital camera according to the embodiment. 6 is a flowchart showing the operation of the audio file creation process of the digital camera in the embodiment. FIG. 3 is a view showing a relationship between files in a memory provided in the digital camera according to the embodiment. 10 is a flowchart showing an operation of a shooting process of a moving image with sound of the digital camera in the second embodiment of the present invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Digital camera, 2 ... Body, 3 ... Shooting lens, 4 ... Self-timer lamp, 5 ... Optical finder window, 6 ... Strobe light emission part, 7 ... Microphone part, 8 ... Power key, 9 ... Shutter key, 10 ... Photographing Mode key, 11 ... Playback mode key, 12 ... Optical viewfinder, 13 ... Speaker unit, 14 ... Macro key, 15 ... Strobe key, 16 ... Menu (MENU) key, 17 ... Ring key, 18 ... Set key, DESCRIPTION OF SYMBOLS 19 ... Display part, 21 ... Motor, 22 ... Lens optical system, 23 ... CCD, 24 ... Timing generator (TG), 25 ... Driver, 26 ... Sample hold circuit (S / H), 27 ... A / D converter 28 ... Color process circuit, 29 ... DMA controller, 30 ... DRAM interface (I / F), 31 ... DRAM, 32 ... Control unit, 33 ... VR M controller, 34 ... VRAM, 35 ... digital video encoder, 36 ... key input unit, 37 ... image processing unit, 38 ... memory, 39 ... sound processing unit, 40 ... USB interface (I / F), 41 ... strobe drive unit .

Claims (5)

Shooting processing means for shooting a video with sound;
A file creation means for creating a sound file with a predetermined format on the basis of the moving image data and the sound data obtained by the photographing processing means, and simultaneously creating a sound file of a predetermined format based on the sound data;
A moving picture recording apparatus comprising: a moving picture file with sound created by the file creating means; and a recording means for individually recording the sound file. It further comprises a specifying means for specifying creation of an audio file,
The file creating unit, moving image recording apparatus according to claim 1, wherein separately performing the process of creating the audio file and with sound file if the creation of the audio file specified by the designation unit. First recording means in which a moving image file with sound is recorded;
Audio extraction means for extracting audio data from the moving image file with audio recorded in the first recording means;
Designating means for designating still image data to be filed among still image data of each frame included in the moving image data related to the moving image file with sound;
Still image extraction means for extracting still image data of a frame designated by the designation means from the video file with audio;
A second recording means;
On the basis of the still image data extracted by the still image extraction means as well as create an audio file of a predetermined format based on the audio data extracted by the speech extraction means to create a still image file of a predetermined format, the audio file video recording device is characterized in that; and a file creating means for recording the second recording means in association with each other and the still image file with. A file creation method used in a video recording device,
A step of shooting a video with sound,
Creating an audio file with a predetermined format based on the video data and audio data obtained by the shooting process, and simultaneously creating an audio file of a predetermined format based on the audio data;
And a step of individually recording the created moving image file with audio and the created audio file. A program for creating a file used in a computer for controlling a video recording device,
In the computer,
A function to process video with audio,
A function of creating a predetermined-format audio file based on the video data and audio data obtained by the shooting process, and simultaneously generating a predetermined-format audio file based on the audio data;
A program for realizing the created moving image file with audio and the function of individually recording the audio file.

Images