KR100811470B1 - Drm system and method using index to make new moving picture contents from multiple moving picture contents - Google Patents

Abstract

The present invention relates to a DRM system and method using an index when generating a new video from a plurality of videos, the partial section information, each video content identifier information desired by the user from a plurality of video content and DRM video content encrypted a plurality of video content And a DRM index generator for generating a DRM index by combining a decryption key identifier corresponding to the decryption key of each DRM video content: decryption key information for decoding the video content of each of the plurality of DRM video contents, and a decryption key identifier corresponding thereto. A license generation unit that generates a license by combining the information and the DRM index usage right information; And a server configured to transmit the DRM index generated by the DRM index generator and a license generated by the license generator to the client, and a license and a DRM index received from the server. By including a client configured to include a decoder that receives and decodes DRM video content and outputs new video content, there is no need for a separate storage space when producing new content from video clips extracted little by little from a plurality of video content. The storage space can be used efficiently, and the burden on the server is reduced because there is no encryption process for new video.

Digital Rights Management (DRM), Index, License, Video

Description

DRM system and method using index when creating new video from multiple videos {DRM SYSTEM AND METHOD USING INDEX TO MAKE NEW MOVING PICTURE CONTENTS FROM MULTIPLE MOVING PICTURE CONTENTS}

FIG. 1 is a diagram illustrating a DRM system using an index when generating a new video from a plurality of videos according to a first embodiment of the present invention.

FIG. 2 is a diagram illustrating a process of creating an index indicating a portion selected by a user from a plurality of video contents and a plurality of DRM video contents illustrated in FIG. 1.

3 is a diagram illustrating a process of generating a DRM index by combining key identifiers of licenses corresponding to respective video contents of the index shown in FIG. 1.

4 is a diagram illustrating a DRM system using an index when generating a new video from a plurality of videos according to a second embodiment of the present invention.

FIG. 5 is a diagram illustrating a process in which a decryption key and identifier matching information are stored in the data store illustrated in FIG. 4.

FIG. 6 is a diagram illustrating a process of creating an index indicating a portion selected by a user from the plurality of video contents shown in FIG. 4.

FIG. 7 is a diagram illustrating a process of generating a DRM index using identifier matching information of the data storage shown in FIG. 4.

FIG. 8 is a diagram illustrating a process of decoding video content received by streaming from DRM video content by a client decoder for each video content.

9 is a block diagram illustrating a process of simultaneously decoding a video content received by streaming from a DRM video content in a client decoder.

FIG. 10A is a block diagram illustrating an existing DRM system when a new video content desired by a user is generated from a plurality of video contents.

10B is a block diagram showing a system according to the present invention in the case of generating new video content desired by a user from a plurality of video contents.

<Explanation of symbols for the main parts of the drawings>

10: server

20: client

100: Multiple video content

200: Multiple DRM Video Content

210 ~ 240: Content identifier

300: data storage

301: index

400: license generation unit

401: License

500: DRM index generator

501: DRM index

600: transmission unit

700: Decoder

The present invention relates to a DRM system and method using an index when generating a new video from a plurality of videos, and more particularly, to configure a new video content by combining a section selected by the user for each video content in a plurality of video content, Minimize the storage space occupied by newly created video content by using the index containing the location information of the original video content, issue a license to the user with decryption information about the content referenced by the index, and encrypt each encrypted video content. When streaming DRM video content, the part corresponding to the index requested by the user is streamed, and the client generates a new video from a plurality of videos that decrypt the encrypted video data using a license. It relates to a stem and a method.

Recently, with the rapid spread of high-speed Internet, large-capacity multimedia contents are rapidly increasing, and a structure capable of effective management and service of contents is required for copyright protection (DRM) technology for large-capacity contents. To this end, the existing DRM technology for video content encrypts only the payload portion of video / audio information excluding the header part of the video content, thereby reducing the redundancy of the content by enabling both download and streaming services as a single DRM content. .

Existing DRM technology which extracts a part from one or more original video contents, generates a new content by combining them, and applies encryption is as follows.

First, duplicate the parts that you want to extract from each original content, arrange the duplicated video content parts in the order you want, and make them into one video file, and then encrypt and decrypt the finished video file by applying DRM technology. The key needed for is made into a license and delivered to the user, and the user uses the received license to decrypt the encrypted video file. This method, which was used previously, is simple, but the partial video extracted from the original video content is not managed as part of the original video, and thus a separate storage space is required because it becomes a new video managed as a separate file. This requires more storage space for more editing videos utilizing the original video content, making it more difficult to manage effectively. If you provide customized editing videos for each user, the server will continue to use the server's storage space for content not used by other users. There was a problem that the server can not be used efficiently because it must be assigned.

Accordingly, the present invention has been made to solve the above-described problems of the prior art, and an object of the present invention is to create a video edited using the original video content, not the copy of the video, but the position information of the desired portion of the original video content Maximize the utilization of storage space by using the index data containing, and manage the original video content encrypted using DRM technology, and when the user accesses the index data, find the data of the matching part in the encrypted video content The license is provided to the user, and the user is issued a license containing decryption key information for decrypting the encrypted video content referred to by the index, thereby allowing the user to decrypt and use the encrypted video using the license. New To provide a DRM system and method using the video when creating the index.

The DRM system using the index when generating a new video from a plurality of videos of the present invention for achieving the above object,

A DRM index is generated by combining the partial section information, each video content identifier information, and a decryption key identifier corresponding to the decryption key of each DRM video content from the plurality of video contents and the DRM video contents encrypted from the plurality of video contents. DRM index generator:

A license generation unit for generating a license by combining decryption key information for decrypting video content of each of the plurality of DRM video contents, corresponding decryption key identifier information, and DRM index usage right information; And

A DRM index generated by the DRM index generator and a server configured to transmit a license generated by the license generator to a client, and a DRM index from the server using a license and a DRM index received from the server's transmitter And a client configured to receive and decode the video content to output a new video content.

According to the above-described configuration of the present invention, the present invention describes a portion that the user wants to use from the original video content as an index containing position information on a partial section of each video content, and lists the indexes designated by the user in order. Create index video content. Each original video content is encrypted in the form of DRM using a different encryption key.At this time, any DRM technology can be used to generate the DRM video content by encrypting the video content. In order to facilitate output, the selected section information is streamed to the client, and the DRM technology encrypts payload data of the video and audio portions. When the user accesses the index, the streaming server refers to the location information of the index and extracts only the desired portion of the DRM video content for streaming to the user. The user uses the license to decrypt the encrypted data transmitted by the streaming server, and the license includes key information used when the video content indicated by the index is encrypted by applying DRM. have.

In the system of the present invention as described above, all original video data is stored and managed as DRM video data in an encrypted state, and new video content generated by a user does not use duplicate partial video data, but position information on encrypted video content. There is little burden on storage space because it uses index containing. In addition, since the DRM technology is configured so that the location information of the original video content points to the same location in the DRM video content, the location information of the original video content is used to access the DRM video content by using the location information of the index. do. If only the DRM video content exists, the index itself is not encrypted, so no additional content encryption process is required, thereby reducing the burden on the server. In the case of content composed by extracting indexes from a plurality of videos as in the present invention, since the encryption key is different for each content corresponding to each index, security can be kept high, and the user's permission can be set differently for each part of the video. This is easy if you are creating a new business model.

On the other hand, the DRM method using the index when generating a new video from a plurality of videos of the present invention,

For each video content extracted from a plurality of video contents, an index is generated by combining section information of a user-selected section and content identifier information for identifying each video content extracted from the plurality of DRM video contents encrypted with the plurality of video contents. Creating an index;

 A license generation step of generating a license by combining each video content decryption key information extracted from the plurality of DRM video contents, corresponding decryption key identifier information, and a right to use each DRM video content;

A DRM index generation step of generating a DRM index by correspondingly combining the decryption key identifier information of the license generated through the license generation step with each video content of the index generated in the index generation step;

A new video content request step of requesting streaming transmission of section information of video content of a section required for the DRM video content by using the content identifier and section information of the DRM index generated in the DRM index generation step; And

And a decryption step of generating new video content by decrypting each section of the video content received in the new video content request step using a decryption key of a license matching the decryption key identifier information of the DRM index.

In this case, as a method of obtaining section information of a portion desired by a user from a plurality of video contents in the index generation step, a method of obtaining section information by dividing time in each video content may be used.

Hereinafter, a DRM system and a method using an index when generating a new video from a plurality of videos of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a diagram illustrating a DRM system using an index when generating a new video from a plurality of videos according to a first embodiment of the present invention.

The DRM system using the index when generating a new video from a plurality of videos according to the present invention is the server 10 and the decoder 700 consisting of a license generator 400, DRM index generator 500 and the transmitter 600 And a client 20 configured as a license requesting unit 800.

The license generator 400 of the server extracts a decryption key for decrypting a plurality of DRM video contents 200 encrypted with a different encryption key for each DRM video content from each DRM video content, and distinguishes each decryption key. A license is generated by adding a decryption key identifier to each decryption key and adding rights and information for using the plurality of DRM video contents 200.

The DRM index generator 500 of the server extracts section information selected by the user for each video content from the plurality of video contents 100, and each of the plurality of DRM video contents 200 encrypting the plurality of video contents. Identification information for identifying the video content is extracted, and section information is mapped to each video content to generate an index containing information about new video content. DRM video content is generated by correspondingly extracting a decryption key identifier for identifying a decryption key capable of decrypting each video content to each video content of the index thus generated from the license.

The transmission unit 600 of the server receives the DRM index generated from the DRM index generator 500 and receives the license generated from the license generator 400 from the license request unit 800 of the client. When there is a request for a license and a DRM index, the received license and the DRM index are transmitted to the decoder 700 of the client.

The license request unit 800 of the client requests a license and the DRM index to the transmission unit 600 of the server when the DRM index use authority is provided.

The decoder 700 of the client receives the streaming video content from the DRM video content by using the DRM index and the license received from the transmission unit 600 of the server, and decodes it to generate new video content.

FIG. 2 is a diagram illustrating a process of creating an index indicating a portion selected by a user from a plurality of video contents and a plurality of DRM video contents illustrated in FIG. 1.

DRM video content extracts identifier information such as DRM video 1 210, DRM video 2 220, DRM video 3 230, and DRM video 4 240 representing each DRM video content. The DRM video 1 210, the DRM video 2 220, the DRM video 4 240, and the DRM video 2 220 are arranged in this order. The user selects and extracts time interval information selected by the user from each of the video contents corresponding to the DRM video contents. That is, the time interval information 1 (111) for the video 1 (110), the time interval information 2 (121) for the video 2 (120), the time interval information for the video section 4 (122) and the video 4 (140) Extract and import 3 (141). Time interval information of each video content extracted from the video content corresponds to content identifier information arranged in order, and combined to generate an index having information about a new video desired by a user. That is, the time section information 1 111 is combined with the DRM video 1 210, the time section information 2 121 is combined with the DRM video 2 220, and the time section information 3 141 is combined with the DRM video 4 ( 240, and the index 301 is generated by sequentially combining the time interval information 4 122 with the DRM video 2 220.

3 is a diagram illustrating a process of generating a DRM index by combining key identifiers of licenses corresponding to respective video contents of the index shown in FIG. 1.

The index 301 combines content identifiers 210, 220, 230, and 240 representing respective video contents selected by the user from the plurality of DRM video contents 200, and time interval information 111, 121, 122, and 141 representing interval information selected by the user. The reference numeral 401 combines a portion 410 indicating content usage rights, decryption keys 431, 432, 433 for decrypting each video content, and decryption key identifiers 421, 422, 423 for identifying the decryption key. Accordingly, the DRM index generator 500 combines the decryption key identifiers 421, 422, and 423 corresponding to each video content identifier from the license 401 and the portion selected by the user in each DRM video content that is index information, to each video content. 501). In the drawing, the video content selected by the user is three video contents such as DRM video 1 210, DRM video 2 220, and DRM video 4 240, and each video content uses the same decryption key. Only three decryption key identifiers 420 are used, such as ID = key1 421, ID = key2 422, and ID = key4 423. Since the decryption key identifier ID = key1 421 corresponds to the decryption key of the DRM video 1 210, it is coupled to the DRM video 1 210, and the decryption key identifier ID = key2 422 decrypts the DRM video 2 220. Since it corresponds to a key, it is combined with the DRM video 2 (220), and since the decryption key identifier ID = key4 (423) corresponds to the decryption key of the DRM video 4 (240), it is combined with the DRM video 4 (240) and the DRM index (501). Can be generated. The decryption key identifiers ID = key1 421, ID = key2 422, and ID = key 4 423 used herein are identifiers used to identify each decryption key. It can be used as.

4 is a diagram illustrating a DRM system using an index when generating a new video from a plurality of videos according to a second embodiment of the present invention.

The DRM system using the index when generating a new video from a plurality of videos according to the present invention is a server 10 consisting of a data storage 300, a license generator 400, a DRM index generator 500 and a transmitter 600 And a client 20 composed of a decoder 700 and a license request unit 800.

When the data storage 300 of the server encrypts the plurality of video contents 100 to make the plurality of DRM video contents 200, the decryption key 310 and the plurality of video contents for decrypting the encrypted DRM video contents are provided. And identifier matching information 320 to associate the plurality of DRM video contents with each other.

The license generator 400 of the server extracts a decryption key for decrypting a plurality of DRM video contents 200 encrypted with a different encryption key for each DRM video content from the data storage 300 and distinguishes each decryption key. A license is generated by adding a decryption key identifier to each decryption key and adding authority and information for using the plurality of DRM video contents 200.

The DRM index generator 500 of the server extracts section information selected by the user from each of the plurality of video contents 100 and identification information for identifying each video content, and associates the section information with each video content. After generating an index containing information about new video content, the video content identifier is converted into a DRM video content identifier using identifier matching information stored in the data storage, and then each video content can be decoded in each video content. DRM video content is generated by correspondingly extracting a decryption key identifier for distinguishing a decryption key from the license.

The transmission unit 600 of the server receives the DRM index generated from the DRM index generator 500, receives the license generated from the license generator 400, and receives the license request unit 800 of the client. When there is a request for a license and a DRM index, the received license and the DRM index are transmitted to the decoder 700 of the client.

The license request unit 800 of the client requests a license and the DRM index to the transmission unit 600 of the server when the DRM index use authority is provided.

The decoder 700 of the client receives the streaming video content from the DRM video content by using the DRM index and the license received from the transmission unit 600 of the server, and decodes it to generate new video content.

FIG. 5 is a diagram illustrating a process in which a decryption key and identifier matching information are stored in the data store illustrated in FIG. 4.

Each video content 100 is assigned an identifier for each content. When the video content 100 undergoes an encryption process, the video content 100 is converted into a plurality of DRM video content 200 and a new identifier is assigned. In this process, identifier matching for matching the decryption key 310 for decrypting the plurality of encrypted DRM video contents with the identifier for the plurality of encrypted DRM video contents 200 Information 320 is stored in data store 300.

FIG. 6 is a diagram illustrating a process of creating an index indicating a portion selected by a user from the plurality of video contents shown in FIG. 4.

From the plurality of video contents 100, identifier information such as video 1 (110), video 2 (120), video 3 (130), and video 4 (140) representing each video content is extracted, and the video is in the order desired by the user. 1 (110), video 2 (120), video 4 (140), and video 2 (120) in this order. In addition, the time interval information selected by the user is extracted for each video content. That is, the time interval information 1 (111) for the video 1 (110), the time interval information 2 (121) for the video 2 (120), the time interval information for the video section 4 (122) and the video 4 (140) Extract and import 3 (141). Time interval information of each video content extracted from the video content corresponds to content identifier information arranged in order, and combined to generate an index having information about a new video desired by a user. That is, the time interval information 1 (111) is combined with the video 1 (110), the time interval information 2 (121) is combined with the video 2 (120), and the time interval information 3 (141) as the video 4 (140). And generate the index 302 by sequentially combining the time interval information 4 122 with the video 2 120.

 FIG. 7 is a diagram illustrating a process of generating a DRM index using identifier matching information of the data storage shown in FIG. 4.

 The identifier of the original video content indicated by the index 302 generated by the process of FIG. 6 is converted into the identifier of the DRM video content by the identifier matching information 320 of the data storage 300, and The DRM index 501 is created by adding the time interval information selected by the user and identifier information of the decryption key 310 necessary to decrypt the corresponding DRM video content.

FIG. 8 is a diagram illustrating a process of decoding video content received by streaming from DRM video content by a client decoder for each video content.

The decoder 700 of the client first displays a portion of the DRM video 1 210 corresponding to the time interval information 1 111 in the order of the video content arranged in the DRM index 501. ). At this time, the license 401 extracts and waits for the decryption key KEY = xxx 431 corresponding to the decryption key identifier ID = key1 421 of the requested portion. When the part requested by the server is transmitted to the decoder 700 of the client for streaming, the decoder 700 of the client decrypts using the decryption key KEY = xxx 431 prepared for matching.

When the decoding of the first index item of the DRM index 501 is completed, the decoder 700 of the client determines a portion corresponding to the time interval information 2 121 in the second index item DRM video 2 220. Requests the DRM video content 200. At this time, the license 401 extracts and waits for the decryption key KEY = yyy 432 corresponding to the decryption key identifier ID = key2 422 of the requested portion. When the part requested by the server 10 is streamed and transmitted to the decoder 700 of the client, the decoder 700 decrypts using the decryption key KEY = yyy (432) prepared to match.

When the decoding of the second index item of the DRM index 501 is completed, the decoder 700 of the client determines a portion corresponding to the time interval information 3 141 in the third index item DRM video 4 240. Requests the DRM video content 200. At this time, the license 401 extracts and waits for the decryption key KEY = zzz 433 corresponding to the decryption key identifier ID = key4 423 of the requested portion. When the part requested by the server 10 is streamed and transmitted to the decoder 700 of the client, the decoder 700 decrypts using the decryption key KEY = zzz 433 prepared to match.

When the decoding of the third index item of the DRM index 501 is completed, the decoder 700 of the client determines a portion corresponding to the time interval information 4 122 of the fourth index item DRM video 2 220. Requests the DRM video content 200. At this time, the license 401 extracts and waits for the decryption key KEY = yyy 432 corresponding to the decryption key identifier ID = key2 422 of the requested portion. When the part requested by the server 10 is streamed and transmitted to the decoder 700 of the client, the decoder 700 decrypts using the decryption key KEY = yyy (432) prepared to match. At this time, after all of the index items specified in the DRM index 501 are transmitted to the decoder 700, if all the parts transmitted from the decoder 700 are decoded, the decoding process is terminated, and the decoder 700 generates new video content. 900 is generated and output.

That is, the user receives the selected portion of the DRM video content by streaming the content identifier information and the time interval information of the DRM index, and executes the decoding method using the decryption key of the license in the order arranged in the DRM index. The new video content, which is a desired part, can be decoded.

9 is a block diagram illustrating a process of simultaneously decoding a video content received by streaming from a DRM video content in a client decoder.

The decoder 700 of the client uses the content identifiers 210, 220, 230, and 240 of the DRM index and the time interval information 111, 121, 122, and 141. The edited new video content 900 is requested as a plurality of DRM video content 200. The plurality of DRM video contents 200 of the server, which has received the request, stream the requested part to the decoder 700 of the client. Since the plurality of DRM video contents 200 are streamed and transmitted in the order of arrangement of the DRM index 501, the plurality of DRM video contents 200 streams and transmits a portion corresponding to the time interval information 1 (111) of the first DRM video 1 (210), and the DRM video 2 A portion corresponding to time section information 2 (121) of 220, a portion corresponding to time section information 3 (141) of DRM video 4 (240), and a portion corresponding to time section information 4 (122) of DRM video 2 (220) Streaming parts are sequentially transmitted. The decoder 700 of the client sequentially extracts and decrypts the decryption key information 431, 432, 433 corresponding to the decryption key identifier information 421, 422, 423 corresponding to each portion of the received DRM video content from the license 401. The DRM video 1 210 is decrypted using the decryption key KEY = xxx (431), and the DRM video 2 220 is decrypted using the decryption key KEY = yyy (432), and the DRM video 4 (240) is decrypted. Is decrypted using decryption key KEY = zzz (433). That is, according to the present method, after all of the portions indicated by the DRM index 501 are sequentially transmitted, the decryption keys 431, 432, 433 corresponding to the key identifiers 421, 422, 423 of the DRM index 501 are extracted from the license 401. Decrypt in the order of transmission. When all index items specified in the DRM index 501 are processed, the decoding process is terminated and the new video content 900 is output.

FIG. 10A is a block diagram illustrating an existing DRM system when a new video content desired by a user is generated from a plurality of video contents.

Existing DRM system duplicates the portions (①, ②, ③, ④) to be extracted from each video content from a plurality of unencrypted video content 100 and connects them in order to create new video content 150. The new video content 900 is generated by decoding the new DRM video content 160 generated by applying the DRM technology.

10B is a block diagram showing a system according to the present invention in the case of generating new video content desired by a user from a plurality of video contents.

In the case of applying the DRM proposed in the present invention, a new DRM video content 250 having only the location information of the encrypted content 200 to which the DRM has already been applied is generated, and the original multiple without having to go through the encryption process by applying the DRM newly. Inherits the DRM video content (200). If it is decoded again, new video content 900 may be generated. Therefore, while the existing technology has to continuously generate new video content, it is not efficient in terms of use of storage space, and it is a method that burdens the server 10 because encryption must be executed again for each newly generated video content. According to the present invention, since the original content to be edited is kept in an encrypted state and new content is composed only by the location information of the content, it is very efficient in terms of storage space and does not perform new encryption. Since the encryption is inherited as it is, there is an advantage that does not burden the server (10).

Although the present invention has been described in more detail with reference to some embodiments, the present invention is not necessarily limited to these embodiments, and various modifications can be made without departing from the spirit of the present invention.

As described above, the DRM system and method using an index when generating a new video from a plurality of videos according to the present invention include location information of the video content in a service for generating new video content using a part of a large amount of video content. Since the small size of the index is used, there is no burden of the storage space of the server and there is little burden of the server because the DRM encryption process for the newly generated content is not necessary.

Claims (11)

A DRM index is generated by combining the partial section information, each video content identifier information, and a decryption key identifier corresponding to the decryption key of each DRM video content from the plurality of video contents and the DRM video contents encrypted from the plurality of video contents. DRM index generator: A license generation unit for generating a license by combining decryption key information for decrypting video content of each of the plurality of DRM video contents, corresponding decryption key identifier information, and DRM index usage right information; And A DRM index generated by the DRM index generator and a server configured to transmit a license generated by the license generator to a client, and a DRM index from the server using a license and a DRM index received from the server's transmitter DRM system using the index when generating a new video from a plurality of videos, characterized in that consisting of a client comprising a decoder for receiving and decoding video content to output a new video content. The method of claim 1, When the server encrypts a plurality of video contents into a plurality of DRM video contents, the server stores a decryption key for decrypting each video content of the encrypted DRM video contents, and identifier matching information corresponding to each video content and each DRM video content. The DRM system using the index when creating a new video from a plurality of videos, characterized in that for adding a data storage. The method of claim 1, The DRM index generator of the server may include: a DRM content identifier extractor configured to extract a content identifier for identifying each DRM video content from the plurality of DRM video contents; A section information extracting unit for extracting section information selected by the user for each video content classified by the content identifier extracted by the content identifier extracting unit from the plurality of video contents corresponding to the plurality of DRM video contents; And A decryption key identifier extracting unit for extracting a decryption key identifier corresponding to a decryption key used for decryption of each DRM video content indicated by the content identifier from a license to obtain a DRM index including a DRM content identifier, section information, and decryption key identifier. DRM system using the index when generating a new video from a plurality of videos, characterized in that for generating. The method of claim 2, The DRM index generator may include: a content identifier extractor configured to extract a content identifier for identifying each video content from the plurality of video contents; A section information extracting unit for extracting information of a section selected by a user for each video content classified by a content identifier extracted by the content identifier extracting unit from a plurality of video contents; An identifier converter for converting a video content identifier into a DRM video content identifier by using identifier matching information stored in a data store; And And a decryption key identifier extracting unit to add a decryption key identifier corresponding to a decryption key for decrypting each video content, thereby generating a DRM index composed of a DRM content identifier, section information, and decryption key identifier. DRM system using index when creating new video. The method according to claim 3 or 4, The section information extracting unit generates a section information of each video content by time section and extracts the DRM system using an index when generating a new video from a plurality of videos. The method of claim 5, The license generation unit of the server extracts a usage right information extracting unit for extracting the usage rights information that specifies the authority and scope to use the new video content; A decryption key extraction unit for extracting a plurality of decryption keys for decrypting respective DRM video contents from the DRM video contents; And And a decryption key identifier generation unit for generating a decryption key identifier corresponding to each decryption key extracted by the decryption key extracting unit to generate a license consisting of usage right information, a decryption key, and a decryption key identifier. DRM system using index when creating new video. The method of claim 6, The client requests the transmission of the DRM index and the license to the transmission unit of the server, and the license request unit for receiving the combined with the decoder of the client DRM system using the index when generating a new video from a plurality of videos. The method of claim 7, wherein The decoder of the client receives the partial segment information desired by the user in the order of the arrangement of the DRM index using the content identifier information of the DRM index and the section information of each video content, and licenses the decryption key matching the decryption key identifier of the DRM index. A DRM system using an index when generating a new video from a plurality of videos, characterized by outputting a new video content by using a method of finding and decoding. The method of claim 7, wherein The decoder of the client receives streaming information simultaneously of the user's desired partial section information by using the content identifier information of the DRM index and the section information of each video, and finds a decryption key matching the decryption key identifier of the DRM index in the license and streams the transmission. A DRM system using an index when generating new videos from a plurality of videos, wherein each DRM video content is decoded in a DRM index array order to output new video content. For each video content extracted from a plurality of video contents, an index is generated by combining section information of a portion selected by the user and content identifier information for identifying each video content extracted from the plurality of DRM video contents encrypted with the plurality of video contents. Creating an index;  A license generation step of generating a license by combining each video content decryption key information extracted from the plurality of DRM video contents, corresponding decryption key identifier information, and a right to use each DRM video content; A DRM index generation step of generating a DRM index by correspondingly combining the decryption key identifier information of the license generated through the license generation step with each video content of the index generated in the index generation step; A video content request step of requesting streaming transmission of section information of video content of a section required for the DRM video content by using the content identifier and section information of the DRM index generated in the DRM index generation step; And A plurality of videos comprising a decryption step of generating a new video content by decrypting each section of the video content received in the video content request step using a decryption key of the license matching the decryption key identifier information of the DRM index Method using an index when creating a new video from an image. The method of claim 10, The license generation step may include: decrypting key information storage step of extracting and storing decryption key information necessary to decrypt each video content of the DRM video content from the DRM video content; A decryption key identifier corresponding step of mapping a decryption key identifier for identifying stored decryption key information to each decryption key information; And And a usage right adding step by adding each DRM video content usage right to the decryption key information and the decryption key identifier.

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