JP2012054884A - Moving image compression control device, moving image recording device and moving image recording/reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an encoding technique to continuously encode without suspending encoding processing even if a video image having a high processing load is input when there are insufficient resources for the encoding processing.SOLUTION: A moving image compression control device converts video signals being input according to a prescribed frame rate into frame-by-frame moving image data, so as to successively write the converted signals into each storage area of a ring buffer, and performs encoding processing by inputting the frame-by-frame moving image data from a prescribed storage area to an encoder. When an encoding processing time for one frame is a threshold time or more based on the frame rate, the moving image compression control device, without encoding a moving image data in the next frame, performs encoding processing by inputting a moving image data in the preceding frame, whose encoding processing is completed in the preceding time, from the ring buffer to the encoder, as a next encoding processing target. When the encoding processing time is smaller than the threshold time, the moving image compression control device encodes by inputting the moving image data in the next frame from the ring buffer to the encoder.

Description

  The present invention relates to a moving image compression control device, a moving image recording device, and a moving image recording / reproducing device.

  A technique for reducing the processing load of encoding by changing the compression rate or the frame rate when encoding and recording a moving image is known. In Patent Document 1 below, image processing for converting each captured image into a predetermined size and compressing at a specified compression rate is performed, and a change in the data amount of each frame is performed using the result of the image processing. A technique for dynamically controlling a compression parameter according to the above is disclosed.

JP 2007-74248 A

Since the prior art assumes that the processor's processing capacity and memory capacity are sufficient, even if video with high processing load of encoding, such as fast motion video, is input to the memory, The encoding process does not stop after the encoding process is delayed. However, if there are not enough resources for encoding, when a video with a high processing load is input, the encoding process stops and the system may fail.
The present invention provides a moving image compression control apparatus capable of continuously encoding without stopping the encoding process even when a video with a high processing load is input when resources for performing the encoding process are not sufficient. With the goal.

  A moving image compression control apparatus according to claim 1 of the present invention includes a ring buffer having a plurality of storage areas for temporarily storing moving image data sequentially input according to a predetermined frame rate for each frame, and a frame encoded within the frame. An encoding unit that encodes the input one frame of the moving image data and outputs the encoded data using either an internal encoding process or an inter-frame encoding process that encodes based on a correlation between frames; Measuring means for measuring the processing time of one frame; and input means for inputting the moving image data stored in the ring buffer to the encoding means for each frame, wherein the input means is a frame measured by the measuring means. The processing time of the threshold based on the frame rate If it is above, instead of moving image data of the next frame to be encoded next, moving image data of the previous frame encoded immediately before the next frame is input from the ring buffer to the encoding means, and Input control is performed such that moving image data is not input to the encoding means.

  Further, in the moving image compression control device according to claim 2 of the present invention, in the moving image compression control device, the number of processing times of the input control corresponding to a plurality of time ranges equal to or greater than the threshold is defined in advance, and the input means When the processing time is within the plurality of time ranges, the moving image data of the previous frame is continuously transmitted from the ring buffer to the encoding unit according to the number of times of the input control corresponding to the time range. It is characterized by inputting.

  According to a third aspect of the present invention, there is provided a moving picture recording apparatus according to the first or second aspect of the invention, and a recording for storing the encoded data for each frame output from the moving picture compression control apparatus in a storage means. And a moving image recording apparatus including a control unit.

  According to a fourth aspect of the present invention, there is provided a moving picture recording / reproducing apparatus according to the first or second aspect of the invention, and storage means for storing encoded data for each frame output from the moving picture compression control apparatus. And reproducing means for reading out the encoded data for each frame stored in the storage means according to the frame rate and reproducing the encoded data of the read frame.

  According to the configuration of the first aspect, the encoding process can be continued even if a video with a high processing load is input when there are not enough resources for the encoding process.

  According to the configuration of the second aspect, the moving image data of the same frame can be automatically encoded as many times as the number of times corresponding to the encoding processing time.

  According to the configuration of the third aspect, the encoding process can be continuously recorded even if a video with a high processing load is input when there are not enough resources for the encoding process.

  According to the configuration of the fourth aspect, the encoding process can be continued and reproduced even if a video with a high processing load is input when there are not enough resources for the encoding process.

It is a figure which shows the structural example of the karaoke apparatus which concerns on embodiment. It is a functional block diagram of an external video processing unit according to the embodiment. (A) And (b) is a figure explaining the example of the input buffer which concerns on embodiment. It is a figure which shows the operation | movement flow of the performance control process of the karaoke apparatus which concerns on embodiment. It is a figure which shows the operation | movement flow of the video recording process of the karaoke apparatus which concerns on embodiment. (A)-(d) is a figure explaining the example of control of the encoding process in embodiment. It is a figure explaining control of the encoding process concerning a modification (1).

<Overview>
The video compression control apparatus according to the present invention controls so that the encoding process of each frame is averaged and completed within a time corresponding to the frame rate when encoding a video shot at a constant frame rate. In the present embodiment, a video camera that captures video is connected to the karaoke device, and a video compression control device is provided in the karaoke device, and video captured by the video camera is encoded and recorded by the video compression control device. An example of a moving image recording apparatus will be described.

<Configuration>
FIG. 1 shows the overall configuration of a karaoke apparatus which is an example of a moving image recording apparatus according to the present embodiment. As shown in FIG. 1, the karaoke apparatus 1 has a video camera 2 connected to a video input terminal (not shown) and a microphone 3 connected to a microphone input terminal (not shown). Hereinafter, each part will be described.

  The microphone 3 is, for example, a loudspeaker such as a condenser microphone, and sends a sound signal obtained by collecting a singing sound emitted by a singer to the sound signal processing unit 14. The control unit 11 includes a CPU (Central Processing Unit), a RAM (Random Access Memory), and a ROM (Read Only Memory) memory. A control program stored in the ROM or RAM is stored in the RAM as a working area. By executing this, each unit connected to the control unit 11 is controlled. The karaoke apparatus 1 according to the present embodiment displays a background image display mode in which a preset background image is displayed together with lyrics of the song and a picture taken by the video camera 2 together with the lyrics during reproduction of the karaoke song. And a recording processing function for encoding and recording an image captured by the video camera 2 during the reproduction of karaoke music. The control unit 11 controls general functions related to karaoke including performance of music specified by the user, and performs performance control and recording processing for displaying an image corresponding to the mode selected by the user during playback of the karaoke music. And do.

  The operation unit 12 is an operation unit that accepts an operation from a user by wire or wirelessly, an operation for switching between a background image display mode and an external video display mode, an operation for adjusting the volume of a microphone or a music, an operation for selecting a music, An operation signal for receiving an operation or the like for instructing the reproduction or stop of the music is included, and an operation signal indicating the operation content operated by the user is sent to the control unit 11.

  The sound source unit 13 reproduces the instructed music data under the control of the control unit 11 to generate a musical tone signal, and sends it to the audio signal processing unit 14. The audio signal processing unit 14 performs predetermined signal processing on the audio signal input from the microphone 3, and combines the musical sound signal and the audio signal transmitted from the sound source unit 13 and emits the sound from the speaker 15. The speaker 15 amplifies and emits the musical sound signal and the audio signal according to the designated volume.

  The storage unit 16 is composed of a non-volatile storage medium, stores karaoke music data and lyrics data such as MIDI (Musical Instrument Digital Interface), and in a format such as MPEG (Moving Picture Experts Group Phase) corresponding to these. Video data (background image data) of a background image that has been compression-encoded is stored. The music data defines the tones and control details that should be generated as the performance progresses, and the lyric data defines the characters that indicate the lyrics that should be displayed as the performance progresses and the color change of the characters Has been.

  The external video processing unit 17 is configured by, for example, a DSP (Digital Signal Processor), A / D converts a video signal of a subject photographed at a constant frame rate by the video camera 2, and converts video data for each frame. The video data is generated and sent to the video reproduction unit 18 and the generated video data of each frame is encoded.

  Specifically, the external video processing unit 17 includes an input buffer 171, an encoder 172, a compression control unit 173, a measurement unit 174, and an output buffer 175, as shown in FIG. As shown in FIG. 3A, the input buffer 171 includes a storage area 30 with indexes 0 to n that are blocked, and stores the index 0 as the next storage area following the storage area with the index n. A ring buffer with an area set.

  The input buffer 171 sequentially stores moving image data for each frame in a storage area indicated by a pointer Pw indicating a writing position described later, and outputs moving image data from a storage area indicated by a pointer Pr2 indicating a reading position described later. To the encoder 172. The encoder 172 encodes one of an intra-frame encoding process for encoding within one frame and an inter-frame encoding process for detecting a motion vector between frames and encoding based on a correlation between frames in accordance with a standard such as MPEG-2. The moving image data output from the input buffer 171 is encoded using processing, and encoded data (I picture, P picture, B picture) is output.

  The compression control unit 173 has a pointer Pw indicating the writing position of the input buffer 171, a pointer Pr 1 indicating a reading reference position referred to when reading from the input buffer 171, and a reading position of the input buffer 171 shown in FIG. Is controlled. The pointer Pw indicates the address of the storage area in which the moving image data is written to the input buffer 171 and is sequentially set from the storage area of index 0. Further, the pointer Pr1 indicates the address of the storage area to be read out from the input buffer 171 next, that is, the frame (to be encoded next) when the encoding process in the encoder 172 is performed within the threshold time based on the frame rate. (Next frame) indicates the stored address. For example, when the frame rate is 30 fps, new moving image data is input to the input buffer 171 every 30 ms. If the encoding process is completed within 30 ms on average, the encoding process is not delayed with respect to writing to the input buffer 171. In this case, the index number of the input buffer 171 The moving image data is processed by the encoder 172 frame by frame. In other words, in the present embodiment, every time the encoding process is performed, the address in the storage area of the next index is sequentially set for the pointer Pr1.

  The pointer Pr2 is set with an address of a storage area in which moving image data to be input to the encoder 172 is stored according to the encoding processing time. Specifically, if the encoding process is longer than the threshold time, that is, if there is a delay in the encoding process, the frame ( The address of the storage area in which the moving image data of the previous frame) is stored is set. If the encoding process is within the threshold time, the same address as the pointer Pr1 is set in the pointer Pr2. Similarly to the pointer Pr1, the pointer Pr2 is set with the address of the storage area of the moving image data to be read next from the input buffer 171 every time encoding processing is performed. Thus, when the processing time of one frame in the encoder 172 is equal to or longer than the threshold time, the previous encoding is performed as the moving image data of the frame to be encoded next so as to eliminate the change in the movement in the time axis direction. The moving image data of the same frame as the processed frame is input to the encoder 172 again.

In this embodiment, the addresses of the storage areas of index 0 are set as the initial values for the pointer Pw, the pointer Pr1, and the pointer Pr2. The storage area of index 0 of the initial value is read when the writing process of the storage areas of index 0 and 1 is completed so that the moving image data reading position in input buffer 171 does not pass the writing position.
The measuring unit 174 includes a counter, measures the encoding processing time of one frame in the encoder 172, and outputs the measurement result to the compression control unit 173. The output buffer 175 sequentially stores the encoded data encoded by the encoder 172.

  Returning to FIG. Under the control of the control unit 11, the video reproduction unit 18 decodes the background image data corresponding to the karaoke music in the background image display mode, and synthesizes the decoded image data with the lyrics data image to display the display unit 19. In the external video display mode, the display unit 19 combines the moving image data output from the video camera 2 and the lyrics data image in the external video display mode. And a function of converting the image signal into a displayable format and inputting the image signal to the display unit 19. The display unit 19 is composed of a display device such as a liquid crystal display. Under the control of the control unit 11, the display unit 19 displays an image signal input from the video reproduction unit 18 at a constant frame rate or is received by the operation unit 12. An image representing the operation content is displayed.

<Operation>
Next, operations of the recording process and the performance control process of the karaoke apparatus 1 according to the present embodiment will be described. FIG. 4 shows an operation flow of the performance control process of the karaoke apparatus 1, and FIG. 5 shows an operation flow of the recording process of the karaoke apparatus 1. These processes are performed simultaneously with the reproduction of the karaoke music. Hereinafter, these processes will be described with reference to the drawings. In the description of FIG. 4, the background image display mode is set by default, and the user selects whether to set the external video display mode.

(Performance control processing)
When the control unit 11 accepts an operation for selecting a song by the user via the operation unit 12, the control unit 11 reads out the song data and lyrics data of the selected song from the storage unit 16, stores them in the RAM, and stores the song data in the sound source unit. 13 and playback of the music is started (step S11). When the external video display mode selection operation is performed by the user via the operation unit 12 (step S12: YES), the control unit 11 outputs an external video signal of a constant frame rate (for example, 30 fps) captured by the video camera 2. The video data for each frame is generated in the external video processing unit 17, and the video playback unit 18 synthesizes the video data for each frame and the lyrics data stored in the RAM in accordance with the progress of the performance of the music. 19 and displayed at a constant frame rate (step S13). In addition, the control unit 11 synthesizes the audio signal input to the microphone 3 and the musical sound signal output from the sound source unit 13 in the audio signal processing unit 14 and emits the sound from the speaker 15 (step S15).

  In step S12, if the user does not select the external video display mode (step S12: NO), the control unit 11 reads the background image data corresponding to the music from the storage unit 16 and decodes it in the video playback unit 18. Processing is performed, and the lyrics data stored in the RAM and the decoded background image data are combined and displayed on the display unit 19 in accordance with the progress of the musical performance (step S14). The control unit 11 repeatedly performs the processes of steps S12 to S16 until the performance of the music being played ends (step S16: NO), and ends the process when the performance of the music ends (step S16: YES).

(Recording process)
Next, the recording process of this embodiment will be described with reference to FIG. When the reproduction of the music is started, the control unit 11 starts shooting with the video camera 2 and starts recording processing with respect to the external video signal shot at a constant frame rate.

  In the external video processing unit 17, the control unit 11 performs A / D conversion on the video signal of the external video input from the video camera 2 at a constant frame rate (for example, 30 fps) and converts it into moving image data for each frame (step S31) Each time the moving image data of each frame is sequentially written in the storage area of the input buffer 171 indicated by the pointer Pw, and the writing is performed, the compression control unit 173 sets the address of the storage area of the next index to the pointer Pw (S31). Step S32).

Further, as shown in FIG. 6A, the external video processing unit 17 indicates the pointer Pr2 by the compression control unit 173 when the moving image data (f2) is written in the storage area of the index 1 in the input buffer 171. The moving image data (f1) in the storage area of index 0 is output from the input buffer 171 and input to the encoder 172 (step S33).

  The external video processing unit 17 encodes the moving image data (f1) input from the input buffer 171 by the encoder 172, and at the same time, measures the processing time of one frame during the encoding process by the measuring unit 174, and encodes after the encoding process. Data is output from the encoder 172 to the output buffer 175 (step S34). The control unit 11 reads the encoded data for each frame from the output buffer 175 every predetermined time, and sequentially stores the read encoded data in the predetermined area of the storage unit 16 (step S35).

  When the performance of the music being played has not ended (step S36: NO), the external video processing unit 17 determines that the encoding processing time measured by the measuring unit 174 is within a threshold time (for example, 30 ms) ( Step S37: YES), as shown in FIG. 6B, the compression controller 173 sets an address indicating the storage area of the next index 1 to the pointer Pr1, and sets the same address as the pointer Pr1 to the pointer Pr2. Then, the compression control unit 173 outputs the moving image data (f2) in the storage area of the index 1 indicated by the pointer Pr2 from the input buffer 171 and inputs it to the encoder 172 (step S38). FIG. 6C shows the state of the input buffer 171 when the encoding process is within the threshold time after the moving image data (f2) is input to the encoder 172. The pointer Pw is set to the storage area of index 4, the pointers Pr1 and Pr2 are set to the same storage area of index 2, and the moving image data (f3) is input from the storage area of index 2 to the encoder 172 and encoded. The

  When the encoding processing time of the moving image data (f3) in the encoder 172 is not within the threshold time (step S37: NO), the external video processing unit 17 uses the compression control unit 173 as shown in FIG. The address indicating the storage area of the next index 3 is set in the pointer Pr1, and the address of the storage area of the same index 2 as the previous time is set in the pointer Pr2. Then, the compression control unit 173 outputs the moving image data (f3) from the storage area of the index 2 indicated by the pointer Pr2, and re-inputs it to the encoder 172 (step S39). In this case, instead of the moving image data (f4) stored in the storage area of the index 3, the same moving image data (f3) as the previous time is input again to the encoder 172 and encoded. For example, when the previous encoding process of the moving image data (f3) is an intra-frame encoding process, the next encoding process is an inter-frame encoding process. The target of the next encoding process is originally the moving picture data (f4). However, by inputting the moving picture data (f3) of the same frame as the previous time to the encoder 172, there is no difference between frames, and the encoding process of this frame is performed. Is shorter than the encoding processing time when moving image data (f4) is input to the encoder 172.

  Also, when the next encoding process is an intra-frame encoding process, the moving image data (f3) of the same frame as the previous frame is encoded as compared with the case where the moving image data (f4) is input to the encoder 172. In some cases, the processing time cannot be shortened and the encoding processing time does not fall within the threshold time. Even in that case, since the processing time of the inter-frame encoding process performed thereafter by inputting the moving image data (f3) to the encoder 172 is shorter than that of the moving image data to be input originally, the encoding process This process may be repeated until the time falls within the threshold time.

For example, if the processing time of the moving image data (f3) of index 2 re-input to the encoder 172 is within the threshold time, an address indicating the storage area of the next index 4 is set in the pointer Pr1, and the pointer Pr2 Is set to the same address as the pointer Pr1, and the moving image data (f5) stored in the storage area of the index 4 is input to the encoder 172 (step S38).
On the other hand, if the processing time of the moving image data (f3) of the index 2 re-input to the encoder 172 is not within the threshold time, the address of the storage area of the same index 2 as the previous time is set for the pointer Pr2. Accordingly, also in this case, instead of the moving image data (f5) stored in the storage area of the index 4, the moving image data (f3) stored in the storage area of the index 2 indicated by the pointer Pr2 is output from the input buffer 171. Then, it is re-input to the encoder 172 (step S39), and is encoded by the encoder 172. The external video processing unit 17 repeats the processes in steps S34 to S39 until the performance of the music being reproduced ends, and when the performance of the music ends (step S36: YES), the recording process ends.

  As described above, while the video is being input, until the encoding processing time is within the threshold time, the frame to be originally encoded is not encoded, and the moving image data of the same frame as the previously encoded frame is input to the encoder 172. Is done. As a result, even if a video with a high encoding processing load is input, the encoding processing time is controlled so as to be averaged and kept within the threshold time. It is possible to prevent the encoding process from stopping due to overflow of the input buffer 171 in time. In other words, if the next encoding process exceeds the threshold time and the next encoding process is an inter-frame encoding process, the same video data as the previous one is input, so that there is no change in the image with the previous frame, The encoding processing time is shorter than when encoding the next frame. By repeating this until the encoding processing time is within the threshold time, the encoding processing time gradually converges within the threshold time.

  The above is an operation example of the karaoke apparatus 1 according to the present embodiment. In the karaoke apparatus 1 according to the present embodiment described above, when the encoding processing time for each frame is equal to or longer than the threshold time, the moving image data of the next frame is not subjected to the encoding process for the moving image data of the next frame. This is input to the encoder 172 and this processing is repeated until the encoding processing time is within the threshold time. Therefore, even if a video with a high encoding processing load such as a fast moving image is output from the video camera 2 due to restrictions on resources for performing the encoding processing, moving image data is input to the input buffer 171 even when the average encoding processing time is output from the video camera 2. Therefore, encoding can be continued without stopping. In addition, the encoded data of the present embodiment is obtained by decimating the actual video motion, but is encoded at the same frame rate as the input video, so that the frame rate is not changed on the player side. Can be played. In this embodiment, since it is determined whether or not the encoding processing time exceeds the threshold time for each frame, even if the interframe encoding processing is performed on the moving image data of the same frame as the previous time, the encoding processing is performed for the threshold time. If the process is completed, the image quality degradation can be minimized by merely thinning out the motion for one frame.

<Modification>
Although the embodiments of the present invention have been described, the present invention is not limited to the above-described embodiments, and can be implemented in various other forms. For example, the above-described embodiment may be modified as follows to implement the present invention, or may be implemented in combination with each modification. Hereinafter, modifications of the embodiment according to the present invention will be described.

(1) In the above-described embodiment, if the encoding process time is equal to or greater than the threshold time, input control is performed in which moving image data of the same frame as the frame subjected to the previous encoding process is output from the input buffer 171 and input to the encoder 172. As an example, a plurality of time ranges exceeding the threshold time may be set, and the number of times of the input control may be set in advance according to the time range. For example, as shown in FIG. 7, the time A, the time B, and the time C are set in advance as a time range exceeding the threshold time as 30 ms as the threshold time, and the time A is set as the time B as the number of times of input control. Is set twice and time C is set three times. If the encoding processing time is equal to or longer than the threshold time 30 ms and the encoding processing time is within the range of time A, the moving image data of the same frame as the previous time is output from the input buffer 171 and input to the encoder 172 as in the embodiment. The input control is performed once, and the encoding process for the frame is performed. If the encoding processing time is within the range of time B, the second input control is performed to perform the encoding processing regardless of the first encoding processing time, and the second encoding processing time is measured. If the encoding process time is within the range of time C, the third input control is performed to perform the encoding process regardless of the first and second encoding process times, and the third encoding process time is measured. .

(2) In the above-described embodiment, when the encoding processing time is equal to or longer than the threshold time, the input of the moving image data of the same frame as the frame subjected to the previous encoding processing is input from the input buffer 171 and input to the encoder 172 In this example, the number of times of performing the input control is arbitrarily set regardless of the encoding processing time, and the encoding process is performed to generate a video with a reduced frame rate. Also good. That is, for example, when the frame rate is 30 fps and the number of times of input control is set to 5, the first frame is encoded instead of the second to fifth frames after the first frame of moving image data is encoded. The moving image data of the frame is encoded four times. In this case, since the first frame is encoded five times without encoding the second to fifth frames, the frame rate after the encoding process does not change at 30 fps. Since the same video is displayed in units, it is possible to display video with a frame rate lowered to 1/5.

  In addition, the same video may be reproduced at a performance timing of a song by using the configuration of the above modification, for example. The control unit 11 of the karaoke apparatus 1 causes the external video processing unit 17 to continuously input the moving image data of the frame input from the input buffer 171 to the encoder 172 at a predetermined performance timing to the encoder 172 for a predetermined number of times. To control. Each encoded data encoded by the encoder 172 and stored in the output buffer 175 is decoded by the video reproduction unit 18 and displayed on the display unit 19 at the same frame rate as the encoding process. By configuring in this way, a video like a still image may be displayed at the performance timing of the music, or the frame rate may be changed in a pseudo manner according to the genre or tone of the music. A simple video may be generated and played back. When generating a video in which the frame rate is changed in a pseudo manner according to the genre of music, the number of times of input control is stored in advance in the storage unit 16 for each genre of music, and input corresponding to the music is performed. The encoding process is performed according to the number of times of control.

(3) In the above-described embodiment, the example in which the external video processing unit 17 (moving image compression control device) is incorporated in the karaoke device 1 has been described. However, the external video processing unit 17 has a display device such as a personal computer. It may be incorporated in information equipment, or may be used as a separate unit from a karaoke device or a personal computer.

(4) In the above-described embodiment, the encoded data encoded by the external video processing unit 17 is sequentially stored in the storage unit 16. For example, a DVD or the like externally connected to the karaoke apparatus 1 may be used. The encoded data may be recorded on a recording medium, or the encoded data may be transmitted to an external device connected to the karaoke apparatus 1 by wire or wirelessly. In addition, the encoded data encoded as a moving image recording / reproducing apparatus may be stored in the storage unit 16, and the encoded data may be decoded and reproduced by the video reproduction unit 18.

  DESCRIPTION OF SYMBOLS 1 ... Karaoke apparatus, 2 ... Video camera, 3 ... Microphone, 11 ... Control part, 12 ... Operation part, 13 ... Sound source part, 14 ... Audio signal processing part, DESCRIPTION OF SYMBOLS 15 ... Speaker, 16 ... Memory | storage part, 17 ... External image processing part, 18 ... Image | video reproduction | regeneration part, 19 ... Display part, 171 ... Input buffer, 172 ... Encoder, 173: Compression control unit, 174 ... Measurement unit, 175 ... Output buffer

Claims (4)

A ring buffer having a plurality of storage areas for temporarily storing moving image data sequentially input according to a predetermined frame rate for each frame;
Encoding means for encoding the input video data of one frame and outputting the encoded data by using either the intra-frame encoding process for encoding within the frame or the inter-frame encoding process for encoding based on the correlation between the frames. When,
Measuring means for measuring the processing time of one frame in the encoding means;
Input means for inputting the moving image data stored in the ring buffer to the encoding means for each frame;
When the processing time of the frame measured by the measuring unit is equal to or greater than the threshold based on the frame rate, the input unit replaces the moving image data of the next frame to be encoded next and immediately before the next frame. A moving image compression control apparatus for performing input control so that the moving image data of the previous frame encoded in the frame is input from the ring buffer to the encoding unit, and the moving image data of the next frame is not input to the encoding unit. The number of times of input control processing according to a plurality of time ranges equal to or greater than the threshold is defined in advance,
When the processing time is within the plurality of time ranges, the input means transfers the video data of the previous frame from the ring buffer to the encoding means according to the number of times of the input control corresponding to the time range. 2. The moving image compression control apparatus according to claim 1, wherein the input is continuously performed. The moving image compression control device according to claim 1 or 2,
A moving image recording apparatus comprising: a recording control unit that stores encoded data for each frame output from the moving image compression control apparatus in a storage unit. The moving image compression control device according to claim 1 or 2,
Storage means for storing encoded data for each frame output from the video compression control device;
A moving image recording / reproducing apparatus comprising: reproducing means for reading out encoded data for each frame stored in the storage means according to the frame rate and reproducing the encoded data of the read frames.

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