JPH06267246A - Non-linear video editing device - Google Patents

Abstract

PURPOSE:To provide a non-linear video editing device which secures continuous reproducing even if the performance of a video storage disk and the constitution of a disk are different. CONSTITUTION:A continuous reproducing parameter calculation section 105 calculates the number of transfer frames, the number of reading start remainder frames and information for continuously reproducible region from the worst data transfer speed obtained from a disk performance measuring section 103, the worst rotation waiting time, the worst seek time and quantity of one frame data obtained from an one frame data quantity input section 104 and outputs them from a video storage disk 101. After this, when the number of remainder frames from a video FIFO 102 is made less than the number of reading start remainder frames, a cut reproducing section 107 reads a corresponding video data including a transfer frame from the video storage disk 101 based on cut information of a cut information storage section 106, and video data corresponding to cut information is continuously reproduced by transferring it to the video FIFO 102.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video editing apparatus for performing video editing by dividing a video into cuts and reconstructing the cuts.
By storing video data in a video storage disk that can be randomly accessed, having only the start and end of each cut as cut information, and reconstructing only that cut information, the corresponding video data is continuously played back as an edited non-linear The present invention relates to a video editing device.

[0002]

2. Description of the Related Art FIG. 4 is a block diagram of a conventional non-linear video editing apparatus. The operation of the conventional non-linear video editing apparatus will be described with reference to FIG.

In FIG. 4, when the number of unreproduced frames in the video FIFO 402 becomes equal to or less than the number of remaining read start frames provided by the continuous reproduction parameter storage unit 403, the cut reproduction unit 405 stores the cuts stored in the cut information storage unit 404. According to the information, the continuous reproduction parameter storage unit 403
Video storage disk 40 for each number of transfer frames provided by
By transferring the video data from 1 to the video FIFO 402, the video data corresponding to the cut information is continuously reproduced.

[0004]

However, if a different model from the one currently used as the video storage disk is used, the performance will be different, and thus the conventional non-linear editing apparatus cannot guarantee continuous reproduction. Further, when a plurality of video storage disks that can operate in parallel are used, the effective transfer rate becomes higher, but if the continuous reproduction parameter is fixed, that performance cannot be utilized. Also, when using multiple video storage disks that can operate alternatively, if the disk with slower performance is connected,
In some cases, continuous playback cannot be guaranteed with the continuous playback parameters so far.

Further, when a hard disk or a magneto-optical disk is used as a video storage disk, there is often a defective area in which the disk cannot be recorded.
An alternative area is used instead for this defective area, but this alternative area is not physically continuous even if it looks logically continuous with the area before and after it. And rotation waiting time occurs. As described above, in the conventional non-linear video editing apparatus, continuous playback may not be guaranteed because data is written without being aware of the alternative area.

In view of the above point, the present invention has an object to provide a non-linear video editing apparatus which guarantees continuous reproduction even if the video storage disk has different performance and disk configuration.

[0007]

A first non-linear video editing apparatus of the present invention includes a video storage disk which stores video data and which can be randomly accessed, and a frame cycle in which the video data is read from the video storage disk and buffered. The performance of the video FIFO that reproduces one frame at a time and outputs the number of unreproduced frames as the number of remaining frames and the performance of the above video storage disk are measured, and the worst data transfer rate, worst seek time, worst rotation waiting time, and video A disk performance measuring unit that outputs defective area information, which is information of an area in which data cannot be continuously stored, a 1-frame data amount input unit that inputs a data amount of 1 frame, and the worst data obtained from the disk performance measuring unit. Transfer rate, worst rotation waiting time, worst seek time, defect area information and 1 frame data amount input section 1 frame data amount obtained al, from the video storage disk to the video FIFO 1
The number of transfer frames, which is the transfer amount of one time, the number of remaining frames to start reading the next video data when the number of remaining frames from the video FIFO becomes less than that value, the continuously reproducible area in the video storage disk. A continuous reproduction parameter calculation unit that outputs the continuously reproducible region information that represents, a cut information storage unit that stores cut information that includes a start time and an end time of a cut that is a short range of video data, and a remaining frame from the video FIFO. When the number becomes equal to or less than the number of remaining frames to start reading, corresponding video data is read from the video storage disk for each transfer frame based on the cut information in the cut information storage unit and the video FIF is read.
It is characterized in that it comprises a cut reproducing unit for transferring to O.

A second non-linear video editing apparatus of the present invention stores partial video data, randomly access a plurality of video storage disks that can be operated in parallel, and read partial video data from each of the video storage disks and combine them. A video FIFO that buffers video data, plays it back one frame at a time according to the frame cycle, and outputs the number of unplayed frames as the number of remaining frames, and the performance of each video storage disk, and measures the worst data transfer rate. ,
The worst seek time, the worst rotation waiting time, the disk performance measuring unit that outputs the defective area information that is the information of the area where the video data cannot be stored continuously, and the slowest data transfer among the information obtained from the respective disk performance measuring units. A system parameter calculator that outputs the value obtained by multiplying the speed by the number of video disks that can operate in parallel as the system worst data transfer rate, the longest worst seek time as the system worst seek time, and the longest worst rotation waiting time as the system worst rotation waiting time. From the 1-frame data amount input section for inputting the 1-frame data amount, the system worst data transfer rate, the system worst rotation waiting time, the system worst seek time, and the disk performance measuring section obtained from the system parameter calculation section. Defect area information and 1 obtained from the 1 frame data amount input section From the amount of frame data, the number of transfer frames, which is one transfer amount from each video storage disk to the video FIFO, and when the number of remaining frames from the video FIFO becomes less than or equal to that value, reading of the next video data is started. A continuous playback parameter calculation unit that outputs the number of remaining frames to be read and continuous playable area information indicating the continuously playable area in the video storage disk, and a cut consisting of a start time and an end time of a cut that is a short range of video data. A cut information storage unit for storing information, and the video FIF
When the number of remaining frames from O becomes equal to or less than the number of remaining frames to start reading, corresponding partial image data is read from each image storage disk that operates in parallel for each transfer frame based on the cut information in the cut information storage unit, and the image FIFO is read. It is characterized in that it comprises a cut reproducing unit for transferring to.

A third non-linear video editing apparatus of the present invention stores a plurality of video storage disks which store video data and are randomly accessible and which can be selectively operated, and read and buffer the video data from each of the video storage disks. A video FIFO that plays back one frame at a time in accordance with the frame cycle and outputs the number of unplayed frames as the number of remaining frames
And the performance of each video storage disk is measured, and the worst data transfer rate, the worst seek time, the worst rotation waiting time,
The disk performance measuring unit that outputs defective area information, which is the information of the area in which video data cannot be stored continuously, and the slowest data transfer rate among the information obtained from each of the disk performance measuring sections are the system worst data transfer rate, A system parameter calculation unit that outputs a long worst seek time as a system worst seek time and a longest worst rotation waiting time as a system worst rotation waiting time, a one-frame data amount input unit that inputs a data amount of one frame, and the system parameter. From the system worst data transfer rate, the system worst rotation waiting time, the system worst seek time, the defective area information from each of the disk performance measuring units, and the one frame data amount obtained from the one frame data amount input unit obtained from the calculation unit , The image F from each storage disk
The number of transfer frames, which is the amount of transfer to the IFO at one time, the number of remaining frames to start reading the next video data when the number of remaining frames from the video FIFO becomes less than that value, continuous playback in the video storage disk A continuous reproduction parameter calculation unit that outputs continuously reproducible region information that represents a possible region, a cut information storage unit that stores cut information including a start time and an end time of a cut that is a short range of video data, and the video FIFO. When the number of remaining frames from is less than or equal to the number of remaining frames to start reading, cut reproduction for reading corresponding video data from each video storage disk for each transfer frame based on the cut information in the cut information storage unit and transferring the read video data to the video FIFO It is characterized by being composed of parts.

[0010]

In the first nonlinear image editing apparatus of the present invention,
This is the information of the worst data transfer rate, worst seek time, worst rotation waiting time, and the area where video data cannot be stored continuously, as the performance of the video storage disk that stores video data and can be randomly accessed is measured by the disk performance measurement unit. Output defect area information. In addition, 1 frame data amount input section is 1
Outputs the frame data amount. From the worst data transfer rate, the worst rotation waiting time, the worst seek time, the defect area information, and the one-frame data amount obtained from the one-frame data amount input unit obtained from the disc performance measuring unit, the continuous reproduction parameter calculation unit uses the video storage disc. From video FIFO
Number of transfer frames, video FIFO
When the number of remaining frames from is less than or equal to that value, the remaining number of read frames for starting the reading of the next video data and the continuously reproducible area information indicating the continuously reproducible area in the video storage disk are calculated and output. After that, when the number of remaining frames from the video FIFO becomes equal to or less than the number of remaining frames to start reading, the cut playback unit reads the corresponding video data from the video storage disk for each transfer frame and transfers it to the video FIFO based on the cut information in the cut information storage unit. By doing so, the video data corresponding to the cut information is continuously reproduced.

In the second non-linear video editing apparatus of the present invention, the performance of the disk performance measuring unit is measured for each of a plurality of video storage disks that store partial video data and are randomly accessible and can operate in parallel, and the worst data transfer rate is set. ,
When the worst seek time, the worst rotation waiting time, and the defective area information, which is the information of the area where the video data cannot be continuously stored, are output, the system parameter calculation unit transfers the slowest data among the information obtained from the respective disk performance measurement units. The value obtained by multiplying the speed by the number of video disks capable of parallel operation is output as the system worst data transfer rate, the longest worst seek time is output as the system worst seek time, and the longest worst rotation waiting time is output as the system worst rotation waiting time. The 1-frame data amount input section outputs the data amount of 1 frame. Then, the system worst data transfer rate, the worst system rotation waiting time, the worst system seek time, the defective area information from each disk performance measuring unit and the one frame data obtained from the one frame data amount input unit obtained from the system parameter calculation unit. From the amount, the continuous playback parameter calculation unit starts reading the next video data when the number of transfer frames, which is the amount of transfer from each video storage disk to the video FIFO at one time, and the number of remaining frames from the video FIFO become less than that value. It outputs the number of remaining frames to be read and continuously reproducible area information indicating the continuously reproducible area in the video storage disk.
After that, when the number of remaining frames from the video FIFO becomes equal to or less than the number of remaining frames to start reading, the cut reproducing unit retrieves the corresponding partial video data from each video storage disk that operates in parallel for each transfer frame based on the cut information in the cut information storage unit. The video data corresponding to the cut information is continuously reproduced by transferring to the read video FIFO.

The third non-linear video editing apparatus of the present invention measures the performance of the disk performance measuring unit for each of a plurality of video storage disks which store video data, are randomly accessible, and can be operated selectively, and determine the worst data transfer rate. , Worst seek time, worst rotation waiting time, when defective area information, which is information of an area in which video data cannot be stored continuously, is output, the slowest data in the information obtained by the system parameter calculation unit from each of the disk performance measurement units. The transfer speed is output as the system worst data transfer speed, the longest worst seek time is output as the system worst seek time, and the longest worst rotation waiting time is output as the system worst rotation waiting time. The 1-frame data amount input section outputs the data amount of 1 frame. Then, the system worst data transfer rate, the worst system rotation waiting time, the worst system seek time, the defective area information from each disk performance measuring unit and the one frame data obtained from the one frame data amount input unit obtained from the system parameter calculation unit. From the amount, the continuous playback parameter calculation unit starts reading the next video data when the number of transfer frames, which is the amount of transfer from each video storage disk to the video FIFO at one time, and the number of remaining frames from the video FIFO become less than that value. It outputs the number of remaining frames to be read and continuously reproducible area information indicating the continuously reproducible area in the video storage disk. After that, when the number of remaining frames from the video FIFO becomes equal to or less than the number of remaining frames to start reading, the cut playback unit
The video data corresponding to the cut information is continuously reproduced by reading the corresponding video data from each video storage disk which selectively operates for each transfer frame based on the cut information in the cut information storage unit and transferring the read video data to the video FIFO.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram of a first embodiment of the present invention.

In FIG. 1, reference numeral 101 is a video storage disk for storing video data, and the video data is a video FIF.
It is transferred to O102. In the video FIFO 102, the transferred video data is buffered in the order of transfer, reproduced in synchronization with the frame cycle, and the number of unreproduced frames in the video FIFO 102 is output as the number of remaining frames. 103
Is a disk performance measuring unit, which measures the performance of the video storage disk 101 and outputs the worst data transfer rate, the worst rotation waiting time, and the worst seek time. At the same time, the position of the defective area existing in the video storage disk 101 is measured. Output defect area information. Reference numeral 104 denotes a 1-frame data amount input unit, which holds the data amount per frame.

Now, assuming that the worst data transfer rate output from the disk performance measuring unit 103 is D, the worst rotation waiting time is L, and the worst seek time is S, one frame data amount input unit 104
Let F be the amount of 1 frame data obtained from At this time,
The continuous reproduction parameter calculation unit 105 obtains the minimum natural number C satisfying C> (L + S) / (1 / 15−F / D), 2 * C as the transfer frame number, and 8/5 as the read start remaining frame number. * C
Ask for. Further, the continuous reproduction parameter calculation unit 105 obtains, from the defective area information, continuous reproducible area information that allows continuous recording of video data while avoiding the defective area.

The cut information storage unit 106 stores cut information which is information on the start time and end time of a continuous section of video data. Editing in non-linear editing is performed by rearranging this cut information. Each cut has a length equal to or greater than the number of transfer frames / 2.

After that, the cut reproduction unit 107 displays the image FI.
When the number of remaining frames in the FO 102 becomes equal to or less than the number of remaining frames to start reading, the next transfer video data is determined based on the cut information in the cut information storage unit 106, and if it is in the middle of cutting, the video data for the number of transfer frames is transferred to the video storage disk 10.
1 to the video FIFO 102. If the rest of the cut is less than 3/2 * the number of transfer frames, the rest of the cut is transferred. Then, the video FIFO 102 reproduces the transferred video data according to the frame period, so that the video data corresponding to the non-linear editing result is continuously reproduced.

Next, a second embodiment of the present invention will be described with reference to the drawings. FIG. 2 is a block diagram of the second embodiment of the present invention.

In FIG. 2, 201 and 202 are video storage disks for storing partial video data, which can operate in parallel. The partial video data is video FIFO2.
It is transferred to 03 at the same time. In the video FIFO 203, the transferred partial video data is combined and buffered as video data in the order of transfer and reproduced in synchronization with the frame period, and the number of unreproduced frames in the video FIFO 203 is output as the number of remaining frames. Reference numerals 204 and 205 denote disk performance measuring units of the video storage disks 201 and 202, respectively, which measure the performances of the video storage disks 201 and 202.
The worst data transfer rate, the worst rotation waiting time, and the worst seek time are output, and at the same time, the defect area information about the position of the defect area existing in each video storage disk is output.

Reference numeral 206 denotes a system parameter calculation unit, which is obtained by multiplying the slowest one of the worst data transfer rates output from the disk performance measuring units 204 and 205 by the number of disks capable of parallel operation, and the system worst data transfer rate, the worst. The longest seek time is output as the system worst seek time, and the longest seek wait time is output as the system worst rotation wait time. Reference numeral 207 denotes a 1-frame data amount input section, which holds the data amount per frame.

Now, let D be the system worst data transfer rate output from the system parameter calculation unit 206, L be the system worst rotation waiting time, and S be the system worst seek time.
Let F be the amount of 1 frame data obtained from the 1 frame data amount input unit. At this time, the continuous reproduction parameter calculation unit 2
08 is a minimum natural number C satisfying C> (L + S) / (1 / 15−F / D), 2 * C is set as the number of transfer frames, and 8/5 * C is set as the number of remaining read start frames.
Ask for. In addition, the continuous reproduction parameter calculation unit 208 obtains, from the defective area information, continuous reproducible area information that allows continuous recording of video data while avoiding the defective area.

The cut information storage unit 209 stores cut information which is information on the start time and end time of a continuous section of video data. Editing in non-linear editing is performed by rearranging this cut information. Each cut has a length equal to or greater than the number of transfer frames / 2.

After that, the cut reproduction unit 210 causes the video FI
When the number of remaining frames in the FO 203 becomes equal to or less than the number of remaining frames to start reading, the next transfer video data is determined based on the cut information in the cut information storage unit 209, and if it is in the middle of cutting, partial video data for the number of transfer frames is stored in the video storage disk. Transfer from 201 and 202 to the video FIFO 203. If the rest of the cut is less than 3/2 * the number of transfer frames, the rest of the cut is transferred.

Then, the partial video data transferred by the video FIFO 203 is combined with the video data and reproduced in accordance with the frame period, whereby the video data corresponding to the non-linear editing result is continuously reproduced.

An automatic white balance device according to a third embodiment of the present invention will be described below with reference to the drawings. FIG. 3 is a block diagram of a third embodiment of the present invention.

In FIG. 3, reference numerals 301 and 302 each represent a video storage disk for storing video data, which can be selectively operated. The video data is video FIFO 303.
Will be transferred as an alternative. In the video FIFO 203, the transferred video data is buffered in the order of transfer, reproduced in synchronization with the frame cycle, and the number of unreproduced frames in the video FIFO 303 is output as the number of remaining frames.

Reference numerals 304 and 305 denote disk performance measuring units of the video storage disks 301 and 302, respectively, which measure the performances of the video storage disks 301 and 302 and output the worst data transfer rate, the worst rotation waiting time, and the worst seek time. At the same time, the defective area information about the position of the defective area existing in each video storage disk is output.

Reference numeral 306 denotes a system parameter calculation unit, which is the slowest one of the worst data transfer rates output from the disk performance measuring units 304 and 305 and the longest of the system worst data transfer rates and worst seek times. The longest one of the system worst seek time and the worst rotation waiting time is output as the system worst rotation waiting time. Three
Reference numeral 07 is a 1-frame data amount input section, which holds the data amount per frame.

Now, assuming that the system worst data transfer rate output from the system parameter calculation unit 306 is D, the system worst rotation waiting time is L, and the system worst seek time is S, one frame data obtained from the one frame data amount input unit. Let F be the quantity. At this time, the continuous reproduction parameter calculation unit 308 obtains the smallest natural number C that satisfies C> (L + S) / (1 / 15−F / D), and sets 2 * C as the number of transfer frames and the number of remaining frames to start reading. 8/5 * C
Ask for. Further, the continuous reproduction parameter calculation unit 308 obtains, from the defective area information, continuous reproducible area information that allows continuous recording of video data while avoiding the defective area.

The cut information storage unit 309 stores cut information which is information on the start time and end time of a continuous section of video data. Editing in non-linear editing is performed by rearranging this cut information. Each cut has a length equal to or greater than the number of transfer frames / 2.

After that, the cut reproduction unit 310 causes the video FI
When the number of remaining frames of the FO 303 becomes equal to or less than the number of remaining frames to start reading, the next transfer video data is determined based on the cut information in the cut information storage unit 309, and if it is in the middle of cutting, the video data for the number of transfer frames is transferred to the video storage disk 20.
1, 202 to the video FIFO 203. If the rest of the cut is less than 3/2 * the number of transfer frames, the rest of the cut is transferred.

Then, the transferred video data is reproduced by the video FIFO 203 in accordance with the frame period, so that the video data corresponding to the non-linear editing result is continuously reproduced.

Incidentally, the first and second embodiments of the present invention,
In the third embodiment, the reproduced video data is one system, but a system having two or more systems at the same time can be dealt with by increasing the number of transfer frames in the continuous reproduction parameter calculation unit. Further, the reproduction method in the cut reproduction unit and the method for obtaining the continuous reproduction parameter in the continuous reproduction parameter calculation unit may be any method other than those described in the embodiments as long as continuous reproduction is possible.

[0034]

As described above, according to the first non-linear video editing apparatus of the present invention, even when video storage disks having different disk performances are connected, the disk performance measuring unit determines the performance of the video storage disk. Since the measurement is performed and the continuous reproduction parameter calculation unit calculates the parameter for guaranteeing the continuous reproduction from the performance, the video data corresponding to the non-linear editing result can be reproduced on the video storage disk of any performance.

Further, even if there is a defective area in the video storage disk, the continuous reproduction parameter calculation section outputs the continuously reproducible area so as not to record and reproduce the video data from the defective area, so that the video data is continuous. It can be guaranteed that it is in the area where reproduction is possible.

Further, according to the second non-linear video editing apparatus of the present invention, when video storage disks having different performances can be operated in parallel, the performance of each video storage disk is measured by the disk performance measuring unit, and the result is used. The system parameter calculator calculates the performance of the parallel operation disk group.
Since the continuous reproduction parameter calculation unit calculates a parameter that guarantees continuous reproduction from the performance of the parallel operation disk group, it is possible to obtain the optimum continuous reproduction parameter that reflects the improvement of the effective data transfer rate in parallel operation.

Further, according to the third non-linear video editing apparatus of the present invention, when video storage disks having different performances can be operated selectively, the performance of each video storage disk is measured by the disk performance measuring unit, From the result, the system parameter calculator calculates the performance of the alternative operation disk group. Since the continuous reproduction parameter calculation unit calculates a parameter that guarantees continuous reproduction from the performance of the disc in the alternative operation, it is possible to obtain an optimum continuous reproduction parameter that absorbs the disc performance variation in the alternative operation. As described above, the practical value of the present invention is high.

[Brief description of drawings]

FIG. 1 is a block diagram of a first embodiment of a nonlinear video editing apparatus of the present invention.

FIG. 2 is a block diagram of a second embodiment of the non-linear video editing device of the present invention.

FIG. 3 is a block diagram of a third embodiment of a non-linear video editing device of the present invention.

FIG. 4 is a block diagram of a conventional video editing device.

[Explanation of symbols]

 101 video storage disk 102 video FIFO 103 disk performance measurement section 104 1 frame data amount input section 105 continuous playback parameter calculation section 106 cut information storage section 107 cut playback section 201, 202 parallel operable video storage disk 203 video FIFO 204, 205 disk Performance measurement unit 206 System parameter calculation unit 207 1 frame data amount input unit 208 Continuous reproduction parameter calculation unit 209 Cut information storage unit 210 Cut reproduction unit 301, 302 Alternative operable video storage disk 303 Video FIFO 304, 305 Disk performance measurement unit 306 System parameter calculation unit 307 1 frame data amount input unit 308 Continuous reproduction parameter calculation unit 309 Cut information storage unit 310 Cut reproduction unit

[Procedure amendment]

[Submission date] June 30, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0025

[Correction method] Change

[Correction content]

[0025] Hereinafter, a third embodiment of the present invention will be described with reference to the drawings. FIG. 3 is a block diagram of the third embodiment of the present invention.

Claims (3)

[Claims] 1. A video storage disk that stores video data and is randomly accessible, and video data is read from the video storage disk, buffered, played back one frame at a time in accordance with a frame period, and the number of unplayed frames remains. The video FIFO output as the number of frames and the performance of the video storage disk are measured, and the worst data transfer rate, the worst seek time, the worst rotation waiting time, and the defective area information, which is the information of the area in which the video data cannot be continuously stored, are obtained. A disk performance measuring unit for outputting, a 1-frame data amount inputting unit for inputting a data amount of 1 frame, a worst data transfer rate, a worst rotation waiting time, a worst seek time, defect area information obtained from the disk performance measuring unit. From the 1-frame data amount obtained from the 1-frame data amount input unit, To the video FIFO, the number of transfer frames that is one transfer amount, the number of remaining frames to start reading the next video data when the number of remaining frames from the video FIFO is less than or equal to that value, in the video storage disk A continuous reproduction parameter calculation unit that outputs continuous reproduction possible region information that represents a continuously reproducible region, a cut information storage unit that stores cut information consisting of a start time and an end time of a cut that is a short range of video data, When the number of remaining frames from the video FIFO becomes equal to or less than the number of remaining frames to start reading, corresponding video data is read from the video storage disk for each transfer frame based on the cut information in the cut information storage unit and transferred to the video FIFO. A video editing device comprising a cut reproduction unit. 2. A plurality of video storage disks that store partial video data and are randomly accessible and can operate in parallel, and read out partial video data from each of the video storage disks, synthesize the video data, buffer the video data, and buffer the video data in a frame cycle. A video FIFO that reproduces one frame at a time and outputs the number of unreproduced frames as the number of remaining frames and the performance of each of the video storage disks are measured, and the worst data transfer rate, the worst seek time, the worst rotation waiting time, The disk performance measurement unit that outputs defective area information, which is the information of the area where video data cannot be stored continuously, and the number of video disks that can operate in parallel at the slowest data transfer rate among the information obtained from the disk performance measurement units Multiplied value is system worst data transfer rate, longest worst seek time is system worst seek time A system parameter calculation unit that outputs the longest worst rotation waiting time as the system worst rotation waiting time, a one-frame data amount input unit that inputs the data amount of one frame, and a system worst data transfer obtained from the system parameter calculation unit unit From the speed, the system worst rotation waiting time, the system worst seek time, the defective area information from each of the disk performance measuring units and the one-frame data amount obtained from the one-frame data amount input unit, the image FIFO from each image storage disk. The number of transfer frames, which is the amount of data transferred once to the video FIFO, the number of remaining frames to start reading the next video data when the number of remaining frames from the video FIFO becomes less than that value, continuous playback in the video storage disk is possible. Continuous playback parameter that outputs continuous playable area information that represents a specific area A calculation unit, a cut information storage unit that stores cut information including cut start time and cut time that is a short range of video data, and the number of remaining frames from the video FIFO becomes equal to or less than the number of read start remaining frames, An image editing apparatus comprising: a cut reproduction unit that reads out corresponding partial image data from each of the image storage disks that operate in parallel for each transfer frame based on the cut information in the cut information storage unit and transfers the partial video data to the image FIFO. 3. A plurality of video storage disks which store video data and which can be randomly accessed and which can be selectively operated, and video data which is read from each of the video storage disks and buffered to reproduce one frame at a time in accordance with a frame period, In addition, the video FIFO that outputs the number of unplayed frames as the number of remaining frames and the performance of each video storage disk are measured, and the worst data transfer rate, the worst seek time, the worst rotation waiting time, and the video data are continuously stored. A disk performance measuring unit that outputs defective area information, which is information on the area that cannot be recorded,
The slowest data transfer rate among the information obtained from the respective disk performance measuring units is output as the system worst data transfer rate, the longest worst seek time is output as the system worst seek time, and the longest worst rotation waiting time is output as the system worst rotation waiting time. A system parameter calculation unit, a one-frame data amount input unit for inputting the data amount of one frame, and a system worst data transfer rate, a system worst rotation waiting time, a system worst seek time, which are obtained from the system parameter calculation unit, Defect area information from the disk performance measurement unit and 1 obtained from the 1 frame data amount input unit
From the amount of frame data, the number of transfer frames, which is the amount of one transfer from each of the video storage disks to the video FIFO, and when the number of remaining frames from the video FIFO becomes equal to or less than that value, reading of the next video data is started. A continuous playback parameter calculation unit that outputs the number of remaining frames to be read and continuous playable area information indicating the continuously playable area in the video storage disk, and a cut consisting of a start time and an end time of a cut that is a short range of video data. When the number of remaining frames from the video information FIFO and the cut information storage unit that stores information is less than or equal to the number of remaining frames to start reading, the transfer frames are handled from the respective video storage disks based on the cut information in the cut information storage unit. And a cut reproducing unit for reading the video data to be transferred to the video FIFO. That the video editing device.