JP2008091017A - Method and device for playing and editing video - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and a device for playing and editing a video, capable of processing a long-time video by preventing the increase of a recording area. <P>SOLUTION: According to the method and the device for playing and editing a video, an index file 24 is read, and video data is read from a video file 25 based on the index file 24. Then, a video is played and edited by a video application 21, and a codec 23 creates a new index file, and this new index file is stored in the video data file 25. In the case of playing and editing the video, the video data is read based on the index file 24. Thus, a long-time video is processed, and a file stored after editing is limited to the index file 24. Accordingly, the increase of a storage area is prevented. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention relates to a video playback / editing method and apparatus for playing back / editing video composed of digital data by a personal computer (hereinafter also referred to as “PC”), and more particularly to video digital data for playback / editing. The present invention relates to a video playback / editing method and apparatus that are not limited by the size of the file.

Conventionally, digital video composed of images and audio has been played and edited on a PC. In the technical field of digital video playback and editing on this PC, hardware resources (CPU (Central Processing Unit) processing capacity, memory
The size of data files that can be handled is limited due to restrictions on size, etc., and digital video processed on a PC is also limited by the number of colors and the number of processing frames per predetermined time.

However, in recent years, along with improvements in hardware functions and price reduction, digital video playback and editing functions on PCs have improved, and the amount of data that can be handled has greatly increased.

FIG. 5 shows a conventional video playback and editing function in a PC. In conventional video playback and editing, a video application 51 for playing and editing a video such as “Video for Windows (registered trademark)” on a PC and a digital video file are analyzed and compressed and expanded. Codec 52, compressed image data and audio
It has a storage medium 53 such as an HDD (Hard Disk Drive) that stores a plurality of digital video files such as AVI (Audio Visual Interleaved) files composed of data, and video is played and edited by these.

FIG. 6 is a flowchart showing the conventional video playback and editing process in FIG.
5 and 6, the video application 51 reads one digital video file from a plurality of digital video files stored in the storage medium 53 (601). Since the digital video file is compressed, the video application 51 transfers a decompression command for decompressing the digital video file to the codec 52 (602). The codec 52 is a video application 51
Receives the decompress command from, decompresses the compressed digital video file,
It returns to the video application 51 (603).

While the decompressed digital video file is played back by the video application 51, the content is edited and a new digital video file is created (604).
. The newly edited digital video file is compressed by the codec 52 in response to a compression command from the video application 51 (605) and written to the storage medium 53 by the video application 51 (606). Thus, conventionally, video playback and editing has been performed on a PC.

However, in the conventional video playback and editing method and apparatus, the size of the digital video file that can be processed by the video application is limited to a predetermined size or less, so that the video that can be played back and edited is used. There is a problem that the length (time) is limited and is not practical. For example, when Video for Windows (registered trademark) is used as a video application, the amount of data per second of digital video in a compressed digital video file (AVI file) is
Since the maximum size of the AVI file that can be processed by this application is 2 GB, the length of the video that can be played and edited is about 9 MB.
The minutes were about 20 seconds, and a long video could not be processed.

In addition, when a digital video file is created by editing a digital video file stored on the storage medium, the original digital video file is newly edited on the storage medium. Since digital video files are stored, there is a problem that a huge storage area is required.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a video playback / editing method and apparatus capable of preventing a storage area from increasing and processing a long-time video.

In order to solve the above problems, a video playback / editing method according to the present invention plays back and edits video based on digital data. In the video playback / editing method, digital data includes index data and video data. (A) Read index data, (
b) reading video data based on the read index data; (c) playing or editing video from the read video data;
(D) New index data is created according to video editing, and (e) new index data is stored.

When playing or editing a video, the video data is read based on the index data, so that a long video can be processed, and only the index data can be stored after editing. Therefore, an increase in the storage area can be prevented.

In order to solve the above problems, the video playback / editing method of the present invention has the above-described configuration,
Step (a) decompresses the index data if the index data is compressed, and step (b) decompresses the read video data after reading the video data, Step (d) is characterized by compressing the new index data after creating the new index data.

Since data can be compressed and decompressed, problems associated with an increase in storage area can be solved.

In order to solve the above problems, a video playback / editing method according to the present invention plays back and edits video based on digital data. In the video playback / editing method, digital data includes index data and video data. The video data includes audio data and image data; the index data includes audio index data for audio data and image index data for image data; and audio data and image data Is formed as a video file, the audio index data and the image index data are formed as an index file, and (a) reads the audio index data and the image index data from the index file; Read audio data and image data from video file based on read audio index data and image index data, and (c) play or edit video from read image data and audio data When the video is edited, (d) a new index file is created from the image data and the audio data in accordance with the video editing, and (e) the new index file is stored. Features.

When playing and editing videos, the audio index of the index file
Read audio and image data from video files based on data and image index data, so you can process long videos and only store index files after editing Therefore, an increase in storage area can be prevented.

In order to solve the above problems, the video playback / editing method of the present invention has the above-described configuration,
Step (a) includes the step of indexing if the index file is compressed.
The file is expanded, step (b) reads the audio data and image data, and then the read audio data and image data are expanded. Step (d) creates a new index file. Then, a new index file is compressed.

Since files and data can be compressed and decompressed, problems associated with an increase in storage area can be solved.

Furthermore, in order to solve the above-described problem, the video playback / editing method of the present invention has the above-described configuration,
The index file is composed of a plurality of files, and the video file is composed of a plurality of files.

Since index files and video files can be composed of multiple files, one video file can be referenced from multiple index files, and
Multiple video files can be referenced from one index file, and multiple video files can be referenced from multiple index files. Therefore, the range of video playback and editing is widened, and file management can be flexibly performed according to the type and purpose of the file.

In order to solve the above problems, a video playback / editing method according to the present invention plays back and edits video based on digital data. In the video playback / editing method, digital data includes index data and video data. Data, video data is audio
Data and image data, the index data includes image index data for the image data, the audio data and the image index data are formed as files, (a) the image index data is read from the file, b) Read image data based on the read image index data, (c) Play or edit video from the read image data and file audio data, (D) A new file is created from audio data and image index data according to video editing, and (e) a new file is stored.

When playing and editing video, the image data is read based on the image index data of the file, so it is possible to process a long video, and the file to be stored after editing the audio data and image index -Since it can be a data file, an increase in storage area can be prevented.

In order to solve the above problems, the video playback / editing method of the present invention has the above-described configuration,
In step (a), if the file is compressed, the file is decompressed, and step (
b) reads the image data and then decompresses the read image data. Step (d)
A new file is created and then the new file is compressed.

Since files and data can be compressed and decompressed, problems associated with an increase in storage area can be solved.

Furthermore, in order to solve the above-described problem, the video playback / editing method of the present invention has the above-described configuration,
The file is composed of a plurality of files.

Since the file can be composed of a plurality of files, the image data can be referred to from the plurality of files. Therefore, the range of video playback and editing is widened, and file management can be flexibly performed according to the type and purpose of the file.

Furthermore, in order to solve the above-described problem, in the video playback / editing method of the present invention, in addition to the above configuration, step (c) is processed by a predetermined application, and is processed by steps (a) and (e). The file is controlled by a predetermined application.

The application that plays and edits the video processes the index data so that it is not directly limited by the size of the file that can be processed by the application.

In order to solve the above-mentioned problem, the video playback / editing device of the present invention includes means for reading an index file including index data, and video data from the video file based on the index data of the index file. To read video and video
Means for reproducing or editing video from data, means for creating a new index file in response to video editing, and means for storing a new index file, The video data includes audio data and image data, and the index data is audio index data corresponding to the audio data and image index data corresponding to the image data. The file index data is image index data, the index file includes image index data and audio data, and the video data of the video file read based on the image index data is Image data, video playback Video data used for fine editing is characterized by the image data read from the video file, an audio data included in the index file.

During video playback and editing, the video data is read from the video file based on the index data of the index file, so that a long time video can be processed, and the file to be stored after editing Since the file can be an index file, an increase in storage area can be prevented.

In order to solve the above problems, the video playback / editing apparatus of the present invention has the above-described configuration,
If the index file is compressed, the index file has means for expanding the index file, and the means for reading the video data includes means for expanding the read video data, and the new index file The means for creating includes a means for compressing the new index file after creating a new index file.

Since files and data can be compressed and decompressed, problems associated with an increase in storage area can be solved.

Furthermore, in order to solve the above-described problem, the video playback / editing apparatus of the present invention has the above-described configuration,
The means for playing or editing the video from the video data is processed by a predetermined application, and the index file is controlled by the predetermined application.

The application that plays and edits the video processes the index data so that it is not directly limited by the size of the file that can be processed by the application.

Furthermore, in order to solve the above-described problem, the video playback / editing apparatus of the present invention has the above-described configuration,
The index file is composed of a plurality of files, and the video file is composed of a plurality of files.

Since index files and video files can be composed of multiple files, one video file can be referenced from multiple index files, and
Multiple video files can be referenced from one index file, and multiple video files can be referenced from multiple index files. Therefore, the range of video playback and editing is widened, and file management can be flexibly performed according to the type and purpose of the file.

  A video playback / editing method and apparatus according to the present invention will be described below with reference to the drawings.

FIG. 1 shows a personal computer (PC) that plays and edits video according to the present invention.
The hardware configuration of is shown. The PC 10 stores a CPU (Central Processing Unit) 1 that controls the hardware and software of the PC 10 as a whole, a memory 2 that stores an operating system, applications, control data, and the like, and data such as digital video files. Storage device 3 such as HDD (Hard Disk Drive) for storing, auxiliary storage device 4 for backing up data or reading data from outside, video control unit 5 for processing video, and control signal from outside Input devices 6 such as a keyboard and a mouse for inputting video, a display device 7 for displaying video images and characters, a speaker 9 for outputting video audio, and transferring data and signals by connecting each device unit. The bus 8 is provided. In addition, the video control unit 5 is connected to an external video recording / reproducing device 11 for I / O.
It has an interface 5a.

Here, the auxiliary storage device 4 includes MO (Magneto Optical), 8 mm video, DAT (Digit).
al Audio Tape) and DVD-RAM (digital Video Dynamic Random Access Memory). The I / O interface 5a includes Component Digital D1, D2, VSB,
IEEE (Institute of Electrical and Electronics Engineers) 1394 (M. La
n), IEEE 1394 (DV.iLnk), NTSC Composite, NTSC Component
(YUV), NTSC Separate (S-Video), Audio Analog (RCA), Audio Digital
(SPDI / F) COAX or OPTI, Audio Digital (AES / EBV) COAX or OPTI, N
There are TSC & PAL. Further, the video recording / reproducing apparatus 11 includes a general home VTR and a business VTR.

With the above configuration, the storage device 3 or the auxiliary storage device 4 stores an index file and a video data file as digital video files. In this video data file, image data and audio data, which are actual video data, are configured in a stream form. The index file includes image index information and audio index information for specifying video data to be reproduced. The CPU 1 reads the compressed index file stored in the storage device 3 or the auxiliary storage device 4 and stores it in the memory 2. The video control unit 5 decompresses the index file, reads the video data file compressed according to the image index information and the audio index information from the storage device 3 or the auxiliary storage device 4, and decompresses the video data file. The video is reproduced, the video image is displayed on the display device 7, and the audio is output from the speaker 9. According to the image displayed on the display device 7 and the audio output from the speaker 9, the reproduced video is edited while operating the keyboard and mouse of the input device 6, and a new video is created. The image index information and audio index information corresponding to the newly created video are created as an index file, and the video control unit 5 compresses the newly created index file to compress the storage device 3 or the auxiliary index information. Write to the storage device 4 and store it. Further, the video control unit 5 can record the first reproduced video or the newly created video in the video recording / reproducing apparatus 11 through the I / O interface 5a. In this way, video playback and editing can be performed on the PC 10.

FIG. 2 specifically illustrates the video playback and editing functions of the present invention. In FIG. 2, a video application 21 that controls video playback and editing, a codec 23 that compresses and decompresses digital video files, and a video application 21 and codec 23 are connected as video playback and editing functions. The video interface (IF) 22 for transferring data, the index file 24 including the image index information and audio index information of the digital video file, and the actual image data and audio data in a stream form And a configured video data file 25. Further, the codec 23 analyzes the index file 24 and reads / writes the video data file 25 in accordance with the image index information and audio index information of the index file 24, the index file 24, And a file processing unit 23b for compressing and expanding the video data file 25.

FIG. 3 is a flowchart showing video playback and editing processing in FIG. 2 and 3, the video application 21 reads a predetermined index file in a stream form from the index file 24 (301), and passes it to the file control unit 23a of the codec 23 via the video IF 22 (302). The file control unit 23a
When the index file is compressed (303), the compressed index file is transferred to the file processing unit 23b, decompressed by the file processing unit 23b (304), and the index information of the index file is analyzed (305). In addition, index
If the file is not compressed (303), the index information of the index file is analyzed as it is (305). The file control unit 23a uses the video data, the video index, and the video index information according to the image index information and the audio index information of the index file.
Predetermined video data is read from the file 25 (306). Since this video data is compressed, it is transferred from the file control unit 23a to the file processing unit 23b and decompressed by the file processing unit 23b (307). The decompressed video data is stored in the file control unit 2
3a and the video IF 22 are transferred to the video application 21 and played back and edited by the video application 21 (308). Here, when there is no video editing in the video application 21 (309), the processing is ended as it is. When the video application 21 edits the video (309), the video data edited from the video application 21 is transferred to the file control unit 23a of the codec 23 via the video IF 22 (310). The file control unit 23a creates image index information and audio index information as an index file according to the edited video data (311). If compression is necessary (312), the file processing unit 23b compresses the image index information and audio index information. After (313), if not compressed (312), the video I
Write to the index file 24 via F22 and the video application 21 (314).

As described above, according to the video playback and editing method and apparatus of the present invention, a digital video file is divided into an index file and a video data file and processed by a video application. The file is an index file, the codec analyzes the index file, and compresses and decompresses the video data file in which the actual image data and audio data are configured in a stream according to the index information. As a result, the size of the file processed by the video application can be made much smaller than before, and the video can be played and edited for a long time. In addition, since the files stored after editing are only very small index files, the capacity of the storage device is greatly increased compared to storing actual images and audio data as in the past. Can be reduced.

The video playback / editing method and apparatus according to the present invention have been described above. Since the size of the index file is small, the index file may be compressed or uncompressed.
Data files are preferably compressed because of their large size.

Further, the video data processed by the index information may be not only both image data and audio data but also one of the data. In this case,
The index file includes index information of data to be indexed and actual data that is not indexed.

In addition, with the index information of one index file, multiple video data,
Can handle files. For example, it is possible to have image index information and audio index information in one index file, and two video data files corresponding to the image index information and audio data information can be used. A plurality of these video data files can be made to correspond.

Conversely, one video data file can be referenced from a plurality of index files. That is, a plurality of index files can be created and associated with one video data file by the above-described editing process.

Further, when video data is played back and edited by the video application 21, video may be recorded in the video recording / playback apparatus 11 shown in FIG.

Further, a digital video file such as an index file or a video data file may be downloaded from the network by connecting a PC to the network.

As mentioned above, the embodiment of the method and apparatus for reproducing and editing video according to the present invention has been described.
In the following, when the video application 21 (FIG. 2) is Video for Windows (registered trademark), a digital video file (AVI (Audio Visual Interleaved) file) that can be actually processed by the Video for Windows (registered trademark) : Xxx.AVI)
This configuration will be described in comparison with the conventional case.

FIG. 4 shows the structure of a digital video file. 4A shows a conventional AVI file, FIGS. 4B to 4D show the structure of the AVI file (index file) in the present invention, and FIG. 4E shows the structure in the present invention. An audio data file and an image data file are shown. 4B shows a case where both image data and audio data are used as index information. FIG. 4C shows a case where only image data is used as index information. FIG. Indicates a case where only audio data is used as index information.

Here, the data size of each digital video file is RIFF (Reso
urce Interchange File Format) header 41, image header 42, and audio header 43 are each 2048 bytes, and audio data 44 per frame averages about 4
272 bytes (variable), image data 45 is 120,000 bytes (fixed), audio index information 46 and image index information 47 are each about 40 bytes (variable). The RIFF header 41 is used to determine codecs for processing the AVI file.

Each index information 46 and 47 indicates a file having actual image data 45 and audio data 44 and the position of necessary data 44 and 45 in the file. For example, when the index information 46 or 47 is described as “D: \ abc.DV n”, the necessary data 44 or 45 is abc. The file control unit 23a of the codec 23 indicates that the file is the nth data of the file named DV, and the abc. The DV file is searched and this abc. The nth data is read with reference to the headers 42 and 43 of the DV file.

When the video application 21 is Video for Windows (registered trademark), the maximum capacity of the AVI file that can be processed is 2 Gbytes. Therefore, in the conventional AVI file as shown in FIG. Video data 44 for a frame,
Only 45 can be processed, about 30 frames (about 3.5 Mbytes) for 1 second video image
Minutes of video data 44, 45 are required, so the maximum video time is about 9 minutes 20 seconds.

On the other hand, in the case of the AVI file according to the present invention shown in FIG. 4B, the AVI file includes index information 46 of both the audio data 44 and the image data 45,
47. Since the size of each index information 46 and 47 is about 40 bytes, the size is about 80 bytes per frame. Therefore, the capacity per frame is about 1/1553 (80 bytes / 124 compared with the conventional AVI file).
In the case of the present invention, the maximum video time that can be processed by Video for Windows (registered trademark) is about 240 hours (14400 minutes) or more, which is more practical than conventional ones. Furthermore, since the AVI file newly created by video editing is about 1/1553 compared to the conventional AVI file, it has a plurality of editing files (AVI files) almost without being aware of the capacity of the storage device. This makes it possible to create a wider variety of video content than before.

Similarly, FIG. 4C shows a case where only the image data 45 is used as the index information 47. In this case, since one frame of the AVI file is about 1/29, the video fo
r The maximum video time that can be processed by Windows (registered trademark) is about 260 minutes or more,
Compared with the prior art, it is more practical and can suppress the increase in storage capacity due to the edited AVI file to about 1/29 compared with the prior art. FIG. 4D shows the case where only the audio data 45 is used as the index information 46, but in the case of Video for Windows (registered trademark), one frame of the AVI file is reduced by about 3%. There is almost no effect of the present invention.

Therefore, when the video application 21 is Video for Windows (registered trademark), as shown in FIGS. 4B and 4C, the image data 45 is converted into the index information 47.
It is desirable to process by.

As described above, the case where the video application is Video for Windows (registered trademark) has been described as an example of the video playback and editing method and apparatus according to the present invention. The present invention can be applied and is not limited to the above-described embodiments and examples.

One index information may correspond to one frame, or may correspond to a predetermined number of consecutive frames.

As described above, according to the video playback and editing method and apparatus of the present invention, a digital video file is divided into an index file and a video data file and processed by a video application. The file is an index file, the codec analyzes the index file, and compresses and decompresses the video data file in which the actual image data and audio data are configured in a stream according to the index information. As a result, the size of the file processed by the video application can be made much smaller than before, and the video can be played and edited for a long time. The files stored after editing are
Since only the index file is very small, the increase in storage capacity can be greatly reduced compared to storing actual image and audio data as before. .

In particular, when the video application is set to Video for Windows (registered trademark), the maximum video time that can be processed is about 240 hours (14400 minutes) or more, which is about 1 of the conventional one.
553 times. Furthermore, since the AVI file newly created by video editing is about 1/1553 compared to the conventional AVI file, it is possible to have a plurality of edited files with little awareness of the capacity of the storage device. Compared to, you can create a wider variety of video content.

It is a figure which shows the hardware constitutions of the personal computer (PC) which performs reproduction | regeneration and edit of the video by this invention. It is a block diagram which shows the reproduction | regeneration and edit function of the video in this invention. 3 is a flowchart showing video playback and editing processing in FIG. 2. It is a figure which shows the structure of a digital video file. It is a block diagram which shows the reproduction | regeneration and edit function of the conventional video. It is a flowchart which shows the reproduction | regeneration and edit process of the conventional video in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... CPU, 2 ... Memory, 3 ... Storage device, 4 ... Auxiliary storage device, 5 ... Video control part, 5a
... I / O interface, 6 ... input / output device, 7 ... display device, 8 ... bus, 9 ... speaker, 1
DESCRIPTION OF SYMBOLS 0 ... Personal computer, 11 ... Video recording / reproducing apparatus, 21, 51 ... Video application, 22 ... Video interface, 23, 52 ... Codec, 23a ... File control part, 23b ... File processing part, 24 ... Index file , 25 ... Video
Data file 41 ... RIFF header 42 ... Image header 43 ... Audio header 44 ... Audio data 45 ... Image data 46 ... Audio index information 47 ... Image index information 53 ... Storage medium.

Claims (25)

In a video playback / editing method for playing back and editing video based on digital data, the digital data includes index data and video data, (a) reading the index data, and (b) Reading the video data based on the read index data; (c) playing or editing a video from the read video data;
When the video is edited, (d) new index data is created in accordance with the video editing, and (e) the new index data is stored. Editing method. 2. The video playback / editing method according to claim 1, wherein, in the step (a), when the index data is compressed, the index data is expanded. 3. The video reproduction / editing method according to claim 1, wherein, in the step (b), after the video data is read, the read video data is expanded. 4. The video reproduction / editing method according to claim 1, wherein said step (d) includes compressing said new index data after creating said new index data. In a video playback / editing method for playing back and editing video based on digital data, the digital data includes index data and video data, and the video data includes audio data and image data. The index data includes an audio data index for audio data and an image data index for image data, and the audio data and the image data are formed as a video file, and the audio index The data and the image index data are formed as an index file, and (a) read the audio index data and the image index data from the index file, and (b) read the audio index data. (E) reading the audio data and the image data from the video file based on the index data and the image index data; and (c) reproducing the video from the read image data and the audio data. Or edit,
When the video is edited, (d) a new index file is created from image data and audio data in accordance with the video editing, and (e) the new index file is stored. A video playback and editing method characterized by: 6. The video playback / editing method according to claim 5, wherein, in the step (a), when the index file is compressed, the index file is expanded. 7. The video according to claim 5, wherein said step (b) decompresses the read audio data and the image data after reading the audio data and the image data. Playback editing method. 8. The video playback / editing method according to claim 5, wherein the step (d) includes compressing the new index file after the new index file is created. 9. The video playback / editing method according to claim 5, wherein the index file comprises a plurality of files. 10. The video playback / editing method according to claim 5, wherein the video file comprises a plurality of files. In a video playback / editing method for playing back and editing video based on digital data, the digital data includes index data and video data, and the video data includes audio data and image data. The index data is
The audio data and the image index data are formed as a file, (a) read the image index data from the file, and (b) read the image index. Reading the image data based on the data; (c) playing or editing a video from the read image data and the audio data of the file;
When the video is edited, (d) a new file is created from audio data and image index data according to the video editing, and (e) the new file is stored. How to play and edit video. 12. The video playback / editing method according to claim 11, wherein, in the step (a), when the file is compressed, the file is decompressed. 13. The video reproduction / editing method according to claim 11 or 12, wherein, in the step (b), after the image data is read, the read image data is expanded. 14. The video playback / editing method according to claim 11, wherein said step (d) includes compressing said new file after creating said new file. 15. The video playback / editing method according to claim 11, wherein the file comprises a plurality of files. Step (c) is processed by a predetermined application,
16. The video playback / editing method according to claim 5, wherein the file processed in the steps (a) and (e) is controlled by the predetermined application. Means for reading an index file containing index data;
Means for reading video data from a video file based on the index data of the index file;
Means for playing and editing video from the video data;
Means for creating a new index file in response to the editing of the video;
Means for storing the new index file;
A video editing apparatus comprising: The video data includes audio data and image data,
18. The video playback / editing apparatus according to claim 17, wherein the index data includes audio index data corresponding to the audio data and image index data corresponding to the image data. The index data of the index file is image index data for image data;
The index file includes the image index data and audio data,
The video data of the video file read based on the image index data is image data;
18. The video data used for playback and editing of the video is the image data read from the video file and the audio data included in the index file. Video playback and editing device. 20. The video playback / editing apparatus according to claim 17, further comprising means for decompressing the index file when the index file is compressed. 21. The video reproduction / editing apparatus according to claim 17, wherein the means for reading the video data includes means for decompressing the read video data. The means for creating the new index file includes means for compressing the new index file after creating the new index file.
A video playback / editing device according to any one of items 21 to 21. The means for playing and editing video from the video data is processed by a predetermined application,
23. The video playback / editing apparatus according to claim 17, wherein the index file is controlled by the predetermined application. 24. The video playback / editing method according to claim 17, wherein the index file comprises a plurality of files. 25. The video reproduction / editing method according to claim 17, wherein the video file is composed of a plurality of files.

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