JP2010021891A - Video editing system and video editing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a video editing system and a video editing method in which a plurality of operators at distant stations can edit video through collaborative work by using video files which are not allowed to be copied at other stations due to legal restrictions. <P>SOLUTION: An edition server 110 distributes, in a streaming manner, proxy video files to an edition terminal 210 and the edition terminal 210 carries out editing operation using the proxy video files and transfers edition information to the edition server 110. The edition server 110, which is a video editing system for generating edited video files based on the initial video files and the acquired edition information. The edition server 110 has a proxy video generator 112 for generating proxy video files, based on the information of a video related information management table 116 and a throughput information management table 117. The edition terminal 210 has an edition engine section 211 for controlling processing on the proxy video files, based on the information of the video related information management table 116. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a material content editing technique, and in particular, a video editing system and a video editing method for jointly editing at distributed sites using material content that is not permitted to be copied to other sites due to copyright restrictions. It is related to technology effective when applied to.

  When creating finished content by editing material content such as video data, video tape has been used in the past, but in recent years video data has been filed and stored in storage in the editing machine for nonlinear editing. Increased. Advantages of performing non-linear editing are advantages in terms of editing functions such as high-speed cueing by making video data into a file.

  As a technique for improving the work efficiency of non-linear editing, for example, Japanese Patent Laid-Open No. 2005-51491 (Patent Document 1) creates low-resolution video data having the same content as video data that is the original material of editing. In addition, based on the editing information created as a result of the editing work based on the low-resolution video data, the editing information about the original high-resolution video data is generated, thereby improving the work efficiency of the editing work. A proxy editing technique that can be used is disclosed.

  Recently, on the other hand, video files that are accessed by an editing machine are stored in a file server to realize sharing of video files. By applying this to an environment where servers and terminals can be connected via a network, it becomes possible to perform video editing jointly by performing nonlinear editing at a plurality of remote locations.

There are several challenges to joint editing at multiple distant bases. One is to transfer video files at high speed between the main site and distributed sites. As a method for transferring a video file at high speed, for example, Japanese Patent Application Laid-Open No. 2007-60178 (Patent Document 2) discloses a technique for transferring video data at high speed with a quality corresponding to a transmission speed by using a hierarchical encoding technique. Has been.
JP-A-2005-51491 Japanese Patent Laid-Open No. 2007-60178

  However, when editing is performed jointly at a plurality of distributed bases, there may be a case where a video file cannot be transferred to another base to create a copy due to a copyright problem in the material content. If copying to another site is not possible, material content cannot be brought to a distributed site where editing is performed, and editing operations cannot be performed jointly at a plurality of distributed sites.

  Accordingly, an object of the present invention is to provide a video editing system and a video editing system in which a plurality of workers at remote sites can perform video editing through collaborative work using video files that cannot be copied to other sites due to restrictions on rights. It is to provide a method. The above and other objects and novel features of the present invention will be apparent from the description of this specification and the accompanying drawings.

  Of the inventions disclosed in this application, the outline of typical ones will be briefly described as follows.

  A video editing system according to a representative embodiment of the present invention is a video editing system that performs proxy editing between an editing server at a main site and an editing terminal at a distributed site. Based on the video related information management table that holds the bit rate and copy right information, the throughput information management table that holds the network throughput information, the information in the video related information management table, and the information in the throughput information management table And a proxy video generation unit that generates a proxy video file from the original video file, and the editing terminal is a proxy video file that is streamed from the editing server based on the information in the video related information management table acquired from the editing server Having an editing engine part to control the processing of It is an feature.

  Among the inventions disclosed in the present application, effects obtained by typical ones will be briefly described as follows.

  According to the exemplary embodiment of the present invention, a plurality of workers at remote locations can recognize the video without being aware of the rights restrictions, regardless of the rights restrictions such as copyrights in the video file. It becomes possible to edit the file as material content.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that components having the same function are denoted by the same reference symbols throughout the drawings for describing the embodiment, and the repetitive description thereof will be omitted.

  FIG. 1 is a diagram showing an outline of a configuration example of a video editing system according to an embodiment of the present invention. The video editing system according to the present embodiment provides a method for performing video editing using a video file that cannot be copied between a plurality of remote sites.

  The video editing system according to the present embodiment has a configuration in which a main editing base 100 and a distributed base 200 are connected by a network 300. In general, a plurality of distributed bases 200 may exist. An editing server 110 is arranged at the main site 100. The editing server 110 is connected to the network 300 via the network device 130 in the base 100. On the other hand, an editing terminal 210 is connected to the network 300 via the network device 230 at the distributed base 200. In general, a plurality of editing terminals 210 may exist in one distributed base 200. The system configurations of the editing server 110 and the editing terminal 210 will be described later.

  In the editing server 110, original video files serving as material contents used for editing are stored in the original video storage 121. In the editing terminal 210, an original video file existing on the editing server 110 is acquired, and editing work is performed. At that time, a part or all of the original video file existing on the editing server 110 is copied for the purpose of taking it from the base 100 to another base and storing it due to restrictions on rights such as copyright. May not be created. According to the video editing system of the present embodiment, the editing terminal 210 can edit the original video file even in such a case.

  FIG. 2 is a diagram illustrating an example of a procedure for realizing video editing in a distributed environment by using the proxy editing described above. If this proxy editing is used as one of the editing methods in the video editing system of the present embodiment, editing work can be performed at distributed sites.

  The editing server 110 of the base 100 stores an original video file 141 serving as material content for editing. For these, a proxy video file 142 having the same content and a low bit rate is created. This is transferred to the distributed base 200 and stored in the editing terminal 210. The editing terminal 210 performs editing work using the stored proxy video file 142.

  The result of editing at the editing terminal 210 is written out as editing information 243 called EDL (Edit Decision List). The editing information 243 is returned to the editing server 110 at the main site 100. The editing server 110 can generate a new editing result video file 144 by applying the editing information 243 acquired from the editing terminal 210 to the original video file 141. This process does not require a GUI (Graphical User Interface), and can be executed by, for example, batch processing.

  According to the above procedure, when the video file used for editing at the editing terminal 210 is transferred from the editing server 110 of the main site 100, the proxy video file 142 having a smaller file size than the original video file 141 is transferred. There is an advantage that the time required for the operation can be reduced.

  FIG. 3 is a diagram illustrating an example of a processing flow of the video editing method in the video editing system according to the present embodiment. The editing server 110 at the base 100 has an original video file 141 serving as editing material content. In general, part or all of a video file may not be allowed to generate a copy for the purpose of accumulating it from one location to another due to copyright restrictions. . The method shown in FIG. 3 makes it possible to edit a video file on the editing terminal 210 of the distributed base 200 even in such a case.

  In the editing server 110 of the base 100, a proxy video file 142 having the same contents and a reduced bit rate is created in advance with respect to the original video file 141 in order to reduce the file size. At that time, the portion that cannot be copied to be stored at other sites due to restrictions on rights is converted while being encrypted. The portion of the proxy video file 142 that is not encrypted is streamed to the editing terminal 210 at the distributed base 200 and played on the editing terminal 210 (1a, 1b).

  At the same time, the unencrypted portion of the proxy video file 142 is stored in the cache storage 221 on the editing terminal 210 as a video cache file 251 (1c). The cache storage 221 is accumulated when a copyable portion in the proxy video file 142 is streamed for the first time. In the second and subsequent editing operations, the video cache file 251 stored in the cache storage 221 is read out and reproduced on the editing terminal 210 (1d) instead of streaming distribution from the editing server 110.

  On the other hand, the portion of the proxy video file 142 that is not allowed to be copied due to rights restrictions and is encrypted is streamed to the editing terminal 210 at the distributed base 200 and encrypted on the editing terminal 210. Playback is performed while decoding the converted part (2a, 2b). Unlike the above case, data is not stored in the cache storage 221.

  The other procedures are the same as the proxy editing procedure shown in FIG. 2, and edit information (EDL) 243 is created based on the editing work performed at the editing terminal 210 of the distributed base 200, and is stored in the main base 100. To the editing server 110. The editing server 110 creates the target editing result video file 144 based on the original video file 141 and the editing information 243 acquired from the editing terminal 210.

  According to the above procedure, even if the material content that is the source of editing includes a portion that is not allowed to be copied to another site due to copyrights or the like, the worker who performs the editing work on the editing terminal 210 is conscious. Editing can be carried out without doing. In addition, a portion that is permitted to be copied to another base is stored as a video cache file 251 in the cache storage 221, thereby reducing the amount of use of the network 300 between the main base 100 and the distributed base 200. And access response can be improved.

  Note that which part of the original video file 141 of the editing server 110 is not allowed to be copied due to the rights is generally clarified when the video content is produced, and this information is managed in a database or the like. A method is conceivable. Further, when the original video file 141 is wrapped with MXF (Material Exchange Format), the right information is held in the MXF. Therefore, the necessity of encryption can be determined using this information.

  In proxy editing, when generating a proxy video file 142 as an alternative to the original video file 141, the bit rate of the proxy video file 142 is generally converted to a predetermined bit rate. In the video editing system of the embodiment, when there is a request from the editing terminal 210 of the distributed base 200, a method of streaming while sequentially converting the bit rate in the editing server 110 of the main base 100 can be considered. Furthermore, it is technically possible to perform encryption while streaming. However, in order to realize these, a high-performance computer is required as the editing server 110.

  With regard to the bit rate value to be converted, the maximum throughput of the network 300 between the main base 100 and the distributed base 200 is measured in advance, and conversion is performed at a bit rate that falls within this throughput value. Streaming distribution is possible, and smooth video playback can be performed on the editing terminal 210.

  The portion of the proxy video file 142 that can be copied to the editing terminal 210 of the distributed base 200 and that is not encrypted is not streamed when used in the editing terminal 210 but is preliminarily distributed. It is also possible to transfer to the cache storage 221. In this case, since streaming distribution is not performed, it is possible to transfer the original video file 141 having a high bit rate over time, and the editing terminal 210 can perform editing work based on high-quality video. Become. Note that there are generally a plurality of distributed bases 200, and distribution similar to the above can be performed for each distributed base 200.

  The procedure of the reproduction process of the proxy video file 142 in the editing terminal 210 is as follows. If the video cache file 251 exists in the cache storage 221, the editing terminal 210 reads the video cache file 251 from the cache storage 221 and plays it back (1 d). On the other hand, since the portion where copying is not permitted due to the rights does not exist in the cache storage 221, it is determined that the proxy video file 142 is requested to the editing server 110.

  As a method for making this determination, for example, the editing terminal 210 acquires the configuration information of the original video file 141 in advance, and manages which part can be stored in the cache storage 221 and which part is not. Information to be stored in a database or the like. Even if a database or the like is not used, the cache storage 221 is checked every time the proxy video file 142 is requested. If the video cache file 251 exists, it is obtained from the cache storage 221; Alternatively, the proxy image file 142 may be requested to the 110. In addition, when the original video file 141 is wrapped with MXF, information in the MXF may be first acquired and determined.

  FIG. 4 is a diagram showing an example of the data structure and data of the video related information management table 116. This is data held by the editing server 110 of the main site 100 in order to realize the procedure of the video editing method in the present embodiment shown in FIG. In the present embodiment, the information is stored in the database. However, the table is not limited to the database, and may be a file table.

  In FIG. 4, a time 401 indicates the top time of each block when the video file is divided into a plurality of parts. However, the time is a relative time represented by the elapsed seconds from the top, where 0 is the top of the video. The content 402 is descriptive information for each chunk. Contents such as what is reflected in the video are described. This information is used to efficiently search for a desired video portion from the proxy video file 142 when editing is performed at the editing terminal 210 of the distributed base 200.

  A bit rate 403 is the bit rate of the original video file 141 for each chunk. When the bit rate of the original video file 141 is not within the throughput as compared with the throughput of the network 300 between the main site 100 and the distributed site 200, as described in FIG. It is necessary to create a lowered proxy video file 142. The bit rate 403 is information necessary for this determination.

  The copy right 404 is a flag indicating whether or not copying is permitted to another site for each block. In the example of FIG. 4, “◯” indicates that copying is possible, and “X” indicates that copying is not possible. When executing the procedure of the video editing method according to the present embodiment shown in FIG. 3, the editing server 110 encrypts a portion that cannot be copied based on this information, and the editing terminal 210 of the distributed base 200 stores the cache storage. Processing such as not storing in 221 is performed.

  The information in the video related information management table 116 is not necessarily stored in a database or the like when the original video file 141 is wrapped with MXF. The MXF includes description information and attribute information about the video, and each processing module can acquire the same information by accessing the MXF file instead of accessing the database. In general, these pieces of information are acquired or created when creating video content. Therefore, the information may be stored in association with the original video file 141 in a database or the like at that time, or the original video file 141 may be wrapped with MXF.

  FIG. 5 is a diagram illustrating a data structure and data example of the throughput information management table 117. The throughput information management table 117 is a table for managing throughput information of the network 300 between the main base 100 and the distributed base 200. In FIG. 5, a base 501 indicates a distributed base 200 that is a target of throughput information. A bandwidth 502 indicates the maximum throughput value of the network 300 between the main site 100 and the distributed site 200 indicated by the site 501. The throughput of the network 300 can be acquired by actually transferring data between the bases and measuring it, and the measured throughput value is registered in the throughput information management table 117 in advance.

  In executing the procedure of the video editing method according to the present embodiment shown in FIG. 3, in order to transfer the original video file 141 by streaming, the editing server 110 performs conversion to lower the bit rate of the original video file 141 and performs proxy processing. When the video file 142 is created, the bit rate is determined based on the value registered in the throughput information management table 117.

  Next, the configuration of the editing server 110 at the main site 100 in FIG. 1 will be described. The editing server 110 is a server device based on a computer system or the like, and includes a database management unit 111, a proxy video generation unit 112, a streaming transmission unit 113, a rendering unit 114, and a network interface (I / F) unit 115. As shown, the original video storage 121, the proxy video storage 122, the EDL storage 123, and the editing result video storage 124 are included. Further, the database management unit 111 holds the video related information management table 116 described in FIG. 4 and the throughput information management table 117 described in FIG. These storages and tables are implemented by a storage device such as an HDD, for example.

  The original video storage 121 stores an original video file 141 that is material content that is a source of editing. The proxy video generation unit 112 reads the original video file 141 and the like from the original video storage 121, refers to the video related information management table 116 and the throughput information management table 117 via the database management unit 111, and targets distributed bases. A proxy video file 142 corresponding to 200 is generated and stored in the proxy video storage 122.

  For example, if the bit rate of a part of the original video file 141 acquired from the video related information management table 116 is 100 Mbps, and the network throughput to the distributed base 200 acquired from the throughput information management table 117 is 10 Mbps, 100 Mbps. Since it is> 10 Mbps, it is determined that streaming distribution is impossible as it is. Therefore, the proxy video file 142 is created by converting the bit rate of the original video file 141 of 100 Mbps to 10 Mbps or less. As described above, the bit rate information of the original video file 141 may be included in the MXF metadata when the original video file 141 is MXF. Good.

  If it is determined from the information in the video related information management table 116 that a certain part of the original video file 141 cannot be copied to another site due to the rights, the proxy video generation unit 112 encrypts the video part. Convert to proxy video. Similarly, when the original video file 141 is MXF, the rights condition information may be used because it may be included in the MXF metadata.

  The streaming transmission unit 113 edits the proxy video file 142 stored in the proxy video storage 122 in response to a request from the editing terminal 210 at the distributed site 200 via the network I / F unit 115. Transmitted toward the terminal 210. As the streaming technology, for example, there is a Windows Media (registered trademark) technology of Microsoft (registered trademark). Windows Media technology has also established a mechanism for streaming encrypted video files and decrypting them at the receiving terminal to play the video.

  If there is sufficient time from the generation of the original video file 141 to the start of editing at the editing terminal 210 of the distributed base 200, as described above, copying of the original video file 141 is permitted. As for the location, there is a method of transferring the file instead of streaming and storing it in the editing terminal 210.

  At this time, the copyable portion of the original video file 141 is specified from the information in the video related information management table 116, and the original video file 141 is directly transferred to the editing terminal 210 of the distributed base 200 without generating the proxy video file 142. To do. Since the transferred portion is accumulated in the cache storage 221 by the editing terminal 210, it is not necessary to perform streaming transmission from the editing server 110. On the other hand, for portions where copying is not permitted due to rights, streaming transmission is performed by the method described with reference to FIG. As described above, by appropriately executing the above two methods in one video content according to the part of the original video file 141, the editing operation is performed on the editing terminal 210 using the highest possible video quality. Can be done.

  The rendering unit 114 uses the original video file 141 stored in the original video storage 121 and the editing information 243 acquired from the editing terminal 210 of the distributed base 200 and stored in the EDL storage 123 to edit the edited video. An editing result video file 144 that is a file is generated and stored in the editing result video storage 124. The network I / F unit 115 has a function for each of the above units to access the network 300. Note that the function of each unit described above is implemented by, for example, software running on the editing server 110.

  Next, the configuration of the editing terminal 210 of the distributed base 200 in FIG. 1 will be described. The editing terminal 210 includes, for example, a computer system such as a PC, and includes an editing engine unit 211, an editing GUI 212, a streaming receiving unit 213, a network interface (I / F) unit 214, and a cache storage 221.

  The streaming receiving unit 213 receives and decodes the video data streamed from the editing server 110, generates a video bitmap, and passes it to the editing engine unit 211. This makes it possible to display the streaming video in a visible form. The editing engine unit 211 provides a video content editing function, and the editing GUI 212 provides a graphical user interface for editing the video content. The network I / F unit 214 provides an interface with the network 300. The functions of the above-described units are implemented by, for example, software that runs on the editing terminal 210.

  The cache storage 221 is a storage for temporarily storing the data of the proxy video file 142 received by the streaming receiving unit 213 as the video cache file 251. The cache storage 221 is implemented by a storage device such as an HDD.

  The editing GUI 212 has a function of confirming the content of a video file that is a material content that is a source of editing in order to edit the video content. When this function is executed, a request for video data is issued to the editing engine unit 211. FIG. 6 is a flowchart illustrating an example of a processing flow in the editing engine unit 211 when a video data request is issued to the editing engine unit 211.

  When the editing engine unit 211 receives a request for video data from the editing GUI 212 (step S601), the editing engine unit 211 checks whether the target video data exists in the cache storage 221 (step S602). In the case of the first request, since video data does not exist in the cache storage 221, the editing engine unit 211 requests a video file from the editing server 110 via the streaming receiving unit 213 (step S <b> 603), and the streaming receiving unit 213. The streaming video data is received from the editing server 110 via step S604.

  Streaming video data may or may not be able to be copied and stored in other locations depending on copyright conditions such as copyright. In addition, depending on this condition, there are cases where encryption is performed in the editing server 110 and cases where encryption is not performed. Therefore, the editing engine unit 211 determines whether or not the video data can be copied for rights based on the information in the video related information management table 116 or the MXF metadata information acquired in advance from the editing server 110 ( In step S605), if copying is possible, the video data received via the streaming receiving unit 213 is accumulated in the cache storage 221 and the video bitmap is passed to the editing GUI 212 (step S608).

  On the other hand, if the video data cannot be copied due to the rights, the editing engine unit 211 confirms whether the video data is encrypted (step S606). If the encrypted data is encrypted, the encrypted video data is decrypted by instructing the streaming receiving unit 213 (step S607), and the video bitmap is transferred to the editing GUI 212 without being stored in the cache storage 221 (step S607). Step S609). If it is not encrypted, the video bitmap acquired from the streaming receiving unit 213 is passed to the editing GUI 212 (step S609).

  When the same video data is requested again from the editing GUI 212 later, if the target video data already exists in the cache storage 221 (step S602), the editing engine unit 211 receives the video data from the cache storage 221. It is acquired and passed to the editing GUI 212 (step S610).

  Through the above processing, the video data is transferred to the editing GUI 212, and when the editing work is completed based on the video displayed on the editing GUI 212, the editing engine unit 211 generates editing information 243. Thereafter, as described above, the editing terminal 210 transfers the generated editing information 243 to the editing server 110, and the editing result video file 144 is based on the original video file 141 and the received editing information 243 in the editing server 110. Is generated.

  FIG. 7 is a diagram illustrating an example of a part of a screen on the editing GUI 212 of the editing terminal 210. Areas 701 and 702 are areas for displaying the contents of a video file that is a source material for editing. In this case, the editing engine unit 211 acquires and displays the video data generated by the streaming receiving unit 213 of the editing terminal 210. The timelines 721 and 722 visually define the configuration of video content to be produced in the course of editing work. The timeline 721 corresponds to the video in the area 701, and the timeline 722 corresponds to the video in the area 702. How is the original video, that is, the video in the areas 701 and 702, in the video content being produced? The structure of whether it is used is shown visually.

  The contents 711 and 712 express the contents of each video file in words. This information is information corresponding to the content 402 in the video related information management table 116 of the editing server 110 and is obtained from the editing server 110 in advance. When the video file wrapping method is MXF, it can also be obtained from the video cache file 251 in the cache storage 221 of the editing terminal 210. By displaying such text information on the editing GUI 212, the operator can know to some extent what video content is included in which part of the original material without actually viewing the video. . As a result, it is not necessary to check the content of useless video, and streaming transmission from the editing server 110 can be suppressed.

  As described above, according to the video editing system of the present embodiment, a plurality of workers at the distributed bases 200 have the right restrictions regardless of the rights restrictions such as the copyright in the video file. It becomes possible to perform editing work jointly using the editing terminal 210 as material content without being conscious of it. As mentioned above, the invention made by the present inventor has been specifically described based on the embodiment. However, the present invention is not limited to the embodiment, and various modifications can be made without departing from the scope of the invention. Needless to say.

  The video editing system and the video editing method of the present invention can be used for a video editing system in which editing is performed jointly at distributed sites using material contents that are not allowed to be copied to other sites due to copyright restrictions. .

It is the figure which showed the outline of the structural example of the video editing system which is one embodiment of this invention. It is a figure explaining the example of the procedure which implement | achieves the video editing in one embodiment of this invention. It is a figure which shows the example of the flow of a process of the video editing method in one embodiment of this invention. It is the figure which showed the data structure and example of data of the video relevant information management table in one embodiment of this invention. It is the figure which showed the data structure and example of data of the throughput information management table in one embodiment of this invention. It is a flowchart which shows the example of the flow of a process in the edit engine part in one embodiment of this invention. It is a figure which shows the example of a part of screen in the edit GUI of the edit terminal in one embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 ... Main site, 110 ... Editing server, 111 ... Database management part, 112 ... Proxy video generation part, 113 ... Streaming transmission part, 114 ... Rendering part, 115 ... Network interface part, 116 ... Video related information management table, 117 ... Throughput information management table, 121 ... original video storage, 122 ... proxy video storage, 123 ... EDL storage, 124 ... edit result video storage, 130 ... network device, 200 ... distributed base, 210 ... editing terminal, 211 ... Editing engine unit, 212 ... Editing GUI, 213 ... Streaming receiving unit, 214 ... Network interface unit, 221 ... Cache storage, 230 ... Network device, 300 ... Network,
141 ... Original video file, 142 ... Proxy video file, 144 ... Editing result video file, 243 ... Editing information,
251 ... Video cache file,
401 ... time, 402 ... content, 403 ... bit rate, 404 ... copy right,
501 ... Base, 502 ... Band,
701, 702 ... area, 711, 712 ... content, 721, 722 ... timeline.

Claims (4)

An editing server of the first base, an editing terminal of the second base, and a network connecting the first base and the second base;
The editing server streams the proxy video file generated from the original video file stored in the editing server to the editing terminal via the network,
The editing terminal performs an editing operation using the proxy video file streamed from the editing server, transfers the editing information obtained as a result of the editing operation to the editing server,
The editing server is a video editing system that generates an editing result video file based on the original video file and the editing information acquired from the editing terminal,
The editing server includes a video-related information management table that holds information about a bit rate and a copy right for the original video file;
A throughput information management table for holding information on throughput between the first base and the second base in the network;
A proxy video generation unit that generates the proxy video file from the original video file based on the information of the video related information management table and the information of the throughput information management table;
The video editing system, wherein the editing terminal includes an editing engine unit that controls processing on the proxy video file based on information of the video related information management table acquired from the editing server. The video editing system according to claim 1,
The proxy video generation unit of the editing server has a bit rate lower than the throughput value of the network between the first base and the second base in the throughput information management table from the original video file. Generating the proxy video file;
Furthermore, based on the information on the copy right for the original video file in the video related information management table, a portion of the original video file that is not permitted to be copied to the editing terminal is encrypted and the proxy Generate a video file,
The editing engine unit of the editing terminal includes the proxy video file streamed from the editing server based on the copy right information for the original video file in the video related information management table acquired from the editing server. Is controlled in the editing terminal, and whether or not a decoding process is performed when the proxy video file is reproduced is controlled. In a video editing system including an editing server at a first base, an editing terminal at a second base, and a network connecting the first base and the second base,
The editing server streams the proxy video file generated from the original video file stored in the editing server to the editing terminal via the network,
The editing terminal performs an editing operation using the proxy video file streamed from the editing server, transfers the editing information obtained as a result of the editing operation to the editing server,
The editing server is a video editing method for generating an editing result video file based on the original video file and the editing information acquired from the editing terminal,
The editing server, based on the bit rate and copy right information about the original video file and the throughput information between the first base and the second base in the network, Generate the proxy video file from
The video editing method, wherein the editing terminal controls processing for the proxy video file based on information on a copy right for the original video file acquired from the editing server. The video editing method according to claim 3,
The editing server generates the proxy video file having a bit rate lower than a throughput value of the network between the first base and the second base from the original video file,
Further, based on the information on the copy right for the original video file, a portion of the original video file that is not permitted to be copied to the editing terminal is encrypted to generate the proxy video file,
Whether the editing terminal stores the proxy video file streamed from the editing server in the editing terminal based on the copy right information for the original video file acquired from the editing server; and A video editing method for controlling whether or not to perform a decoding process when the proxy video file is reproduced.

Images