JP6992104B2 - Content editing equipment, content editing methods and content editing programs - Google Patents

Description

The present invention relates to a content editing device for editing content, a content editing method, and a content editing program.

Conventionally, a content distribution server is configured to distribute content such as video and music to a client terminal via a network. For example, based on a content distribution protocol such as HLS (HTTP Live Streaming) or MPEG-DASH (Dynamic Adaptive Streaming over HTTP), the content is divided into a plurality of fragment files (segment files), and the playback order of the plurality of fragment files is changed. Define the defined playlist file and store the playlist file and multiple fragment files in the content distribution server. The client terminal acquires the playlist file of the content desired to be distributed from the content distribution server, and sequentially acquires the fragment file based on the playlist file, whereby the content can be played back.

For example, in the video playback system described in Patent Document 1, the database unit of the server device records the video segments corresponding to the linear type and non-linear type services on the same time axis, and the client device is from the database unit. Store the playlist for playing the acquired video segment. When the playback program transmission unit of the server device receives the transmission request of the playback program for which the playback position is specified from the client device, the playback program transmission unit plays back the video segment arranged within a predetermined period including the playback position on the time axis. Send a playback program to do. The client device updates the playlist based on the playback program and plays the video segment according to the playlist.

Japanese Unexamined Patent Publication No. 2016-213709

In a series of contents composed of a plurality of fragment files, as shown in FIG. 4, some fragment files composed of advertisements and commercials may be replaced and edited. However, conventionally, the time interval (scale) and the number of a plurality of fragment files cannot be changed after the content is generated. Therefore, it is not possible to replace different scales and different numbers of fragment files. Therefore, it is necessary to prepare the replaced fragment files so that they have the same scale and number as the fragment files before replacement. There are restrictions in actual operation, such as restrictions on the generation of.

In addition, the timing to switch to the fragment file after replacement must be the start position of any fragment file of the original content, and any position of any fragment file of the original content can be set to the switching timing. It is difficult and the editing of the original content is limited to fragment file units. Also, as described above, if the generation of the fragmented file after replacement is restricted or the editing of the original content is restricted, it becomes difficult to smoothly switch between the original content and the fragmented file after replacement. , Seamless (smooth) playback may not be possible.

In addition, in a series of contents consisting of a plurality of fragment files, when editing by deleting a part, it is necessary to delete each fragment file, so that the desired scene is deleted or unnecessary in the edited content. There is a possibility that the scene will be left behind.

Therefore, in consideration of the above circumstances, the present invention is a content editing device and a content editing method capable of replacing fragment files while realizing seamless reproduction without restricting generation of fragment files after replacement and editing of original contents. And to provide content editing programs.

In order to solve the above problems, the content editing device of the present invention edits content including a plurality of fragment files to be reproduced in chronological order and a playlist file that defines the reproduction order of the plurality of fragment files. When performing replacement editing in which a part of the plurality of fragment files is replaced with a predetermined replacement file in the editing device, the replacement start position and replacement end of the replacement file are performed on the playback time axis of the content. When the position is determined and the replacement start position corresponds to the reproduction intermediate position of the first fragment file, the first fragment file is edited so that the replacement start position becomes the reproduction end position. When the first fragment file is a front file with respect to the replacement file and the replacement end position corresponds to the reproduction intermediate position of the second fragment file, the replacement end position of the second fragment file is By editing the file so that it is at the playback start position, the second fragment file is used as a rear file with respect to the replacement file, and the replacement file is inserted between the front file and the rear file to obtain the content. Editing is performed, the playlist file is edited, and the playback order from the first fragment file to the second fragment file is replaced with the playback order of the front file, the replacement file, and the rear file. It is a feature.

Further, the content editing method of the present invention is a content editing method for editing content including a plurality of fragment files to be reproduced in chronological order and a playlist file defining the reproduction order of the plurality of fragment files. When performing replacement editing in which a part of the plurality of fragment files is replaced with a predetermined replacement file, the replacement start position and the replacement end position of the replacement file are determined on the reproduction time axis of the content, and the above. When the replacement start position corresponds to the reproduction intermediate position of the first fragment file, the first fragment file is edited so that the replacement start position becomes the reproduction end position, and the first fragment file is edited. Is the front file with respect to the replacement file, and when the replacement end position corresponds to the reproduction intermediate position of the second fragment file, the replacement end position of the second fragment file is the reproduction start position. The second fragment file is used as a rear file with respect to the replacement file, and the replacement file is inserted between the front file and the rear file to edit the content and play. The list file is edited to replace the reproduction order from the first fragment file to the second fragment file in the reproduction order of the front file, the replacement file, and the rear file.

Further, the content editing program of the present invention is a content editing program that edits content including a plurality of fragment files to be reproduced in chronological order and a playlist file that defines the reproduction order of the plurality of fragment files. When performing replacement editing in which a part of the plurality of fragment files is replaced with a predetermined replacement file, a step of determining a replacement start position and a replacement end position of the replacement file on the playback time axis of the content. When the replacement start position corresponds to the reproduction intermediate position of the first fragment file, the first fragment file is edited so that the replacement start position becomes the reproduction end position, and the first said When the step of making the fragment file a front file with respect to the replacement file and the replacement end position correspond to the reproduction intermediate position of the second fragment file, the replacement end position reproduces the second fragment file. The replacement file is inserted between the front file and the rear file in the step of making the second fragment file a rear file with respect to the replacement file while editing so as to be the start position. The step of editing the content and the playback order of the playlist file from the first fragment file to the second fragment file are the playback of the front file, the replacement file, and the rear file. It is characterized by having the computer execute the steps of replacing in order.

According to the present invention, it is possible to replace a fragment file while realizing seamless reproduction without limiting the generation of the fragment file after the replacement and the editing of the original content.

It is a block diagram which shows the outline of the content distribution system provided with the content distribution server as the content editing device which concerns on one Embodiment of this invention. It is a schematic diagram which shows the replacement editing operation in the content editing apparatus which concerns on one Embodiment of this invention. It is a flowchart which shows the replacement editing operation in the content editing apparatus which concerns on one Embodiment of this invention. It is a schematic diagram which shows the conventional replacement editing operation.

The configuration of the content distribution system 1 (hereinafter referred to as the distribution system) including the content distribution server 2 (hereinafter referred to as the distribution server) according to the embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, the distribution system 1 includes a distribution server 2 and a client terminal 3, and is configured to distribute content from the distribution server 2 to the client terminal 3 via a predetermined network 4 such as the Internet. .. Hereinafter, the user refers to an operator or an administrator who distributes or edits the content using the distribution server 2, and the client indicates an operator who views the content using the client terminal 3. Note that FIG. 1 shows an example in which the distribution system 1 includes one distribution server 2 and one client terminal 3, but the distribution system 1 includes two or more distribution servers 2 and two or more client terminals. 3 may be provided.

The distribution system 1 adopts a content distribution protocol such as HLS (HTTP Live Streaming) or MPEG-DASH (Dynamic Adaptive Streaming over HTTP), and the distribution source distribution server 2 and the distribution destination client terminal 3 use this protocol. Works for content delivery based on.

In this content distribution protocol, on the distribution source distribution server 2, the content to be distributed is divided (subdivided) at predetermined time intervals (for example, 2 to 10 seconds) in chronological order, and MPEG2-TS (Transport Stream) or the like is used. Generate multiple fragment files (segment files) consisting of (see Fig. 2), generate playlist files that define the playback order of multiple fragment files (see Fig. 2), and distribute content live or on demand. enable. For example, H.A., which is video data and audio data that are continuous in time. The content of the moving image consisting of the video data of the 264 codec and the audio data of the AAC codec is divided at predetermined time intervals, and a TS file accommodated in the MPEG2-TS is generated as a fragment file. In addition, an m3u8 file that defines the playback order of these TS files, the playback start time of each TS file, the total playback time, and the like is generated as a playlist file.

Then, at the distribution destination, the playlist file of the content desired to be distributed is acquired from the content distribution server, and the fragment files are sequentially acquired by streaming based on the playlist file, so that the content can be played back.

Next, the distribution server 2 will be described. The distribution server 2 is a server that stores one or more contents and distributes the contents according to the access from the client terminal 3. Further, the distribution server 2 functions as a content editing device capable of editing content according to a user's operation.

The distribution server 2 is, for example, a control unit 10, a storage unit 11, a communication unit 12, a display unit 13, an operation unit 14, a fragment file storage unit 15, a playlist file storage unit 16, and a replacement file. A storage unit 17 is provided.

The control unit 10 has a CPU (Central Processing Unit) and the like, and is configured to control the overall operation of the distribution server 2 in an integrated manner. The storage unit 11 has a memory such as a ROM (Read Only Memory) and a RAM (Random Access Memory), and a recording medium such as a hard disk, and stores information, data, programs, and the like controlled by the control unit 10. It is composed of.

The control unit 10 has, for example, a function of distributing content in response to an access from the client terminal 3, and functions as the content distribution unit 18 by executing a program stored in the storage unit 11. Further, the control unit 10 has a function of editing the content according to the operation of the user, for example, and functions as the content editing unit 19 by executing the program stored in the storage unit 11. In other words, the content distribution unit 18 and the content editing unit 19 are applications (programs) for operating a computer such as the control unit 10 as the distribution server 2 by installing the content distribution unit 18 and the content editing unit 19.

The communication unit 12 is an interface for the distribution server 2 to connect to a network 4 such as the Internet or a LAN, that is, the distribution server 2 is connected to the client terminal 3 via the network 4. For example, the communication unit 12 receives a content distribution request transmitted from the client terminal 3 and transmits it to the control unit 10 (content distribution unit 18), and receives and controls a fragment file transmission request for the content being distributed. It is transmitted to the unit 10 (content distribution unit 18). Further, the communication unit 12 transmits a playlist of contents in which the control unit 10 (content distribution unit 18) responds to the distribution request to the client terminal 3, and the control unit 10 (content distribution unit 18) responds to the transmission request. The file is transmitted to the client terminal 3.

The display unit 13 is a display that displays various screens at the time of content distribution or content editing, and may be composed of any display device such as a liquid crystal display, organic electroluminescence (organic EL), or light emitting diode (LED). It may also have a touch panel function. The operation unit 14 is an input device such as a keyboard, a mouse, and other keys that accept input operations from the user, and when the display unit 13 is composed of a touch panel, the operation unit 14 may be integrally configured with the display unit 13.

The fragment file storage unit 15 and the playlist file storage unit 16 are composed of a database or the like that stores the content distributed by the content distribution unit 18 in advance regardless of whether it is live distribution or on-demand distribution. The fragment file storage unit 15 stores a plurality of fragment files (see FIG. 2) subdivided in chronological order for each content, and the playlist file storage unit 16 stores a playlist file (FIG. 2) generated for each content. See). The fragment file storage unit 15 and the playlist file storage unit 16 may store a plurality of fragment files and playlist files generated by the distribution server 2, and may store a plurality of fragment files and playlist files generated by an external device. The distribution server 2 may input or receive and store the file.

The replacement file storage unit 17 is composed of a database or the like that stores in advance a replacement file to be replaced with a part of a plurality of fragment files of the content. For example, the replacement file consists of advertisements, commercials, or other videos. The replacement file is composed of one or more fragment files subdivided in chronological order (see FIG. 2), and may be subdivided at different time intervals from the plurality of fragment files constituting the original content. The replacement file storage unit 17 may store the replacement file generated by the distribution server 2, or the distribution server 2 may input or receive and store the replacement file generated by the external device.

In this embodiment, an example in which the distribution server 2 includes the fragment file storage unit 15 and the playlist file storage unit 16 will be described, but the fragment file storage unit 15 or the playlist file storage unit 16 communicates with the distribution server 2. It may be provided as a possible connected external device.

The content distribution unit 18 receives a distribution request specifying the content to be distributed from the client terminal 3, and searches for a playlist file corresponding to the content to be distributed from the playlist file storage unit 16 in response to the distribution request. The playlist file of the search result is transmitted to the client terminal 3. In the distribution request, the content may be specified by a content name that can identify the content to be distributed, a file name of a playlist file, other identification information (for example, an identification number), or the like.

The content distribution unit 18 receives a transmission request specifying a fragment file to be transmitted for the content being distributed to the client terminal 3 from the client terminal 3, and in response to the transmission request, stores the fragment file to be transmitted. Search from 15, and send the fragment file of the search result to the client terminal 3. In the delivery request, the fragment file may be specified by the storage location (URL, etc.) of the fragment file that can identify the fragment file to be transmitted, the file name, other identification information (for example, identification number), or the fragment file. A playback time from the start of playback of the content may be specified, in which case the fragment file corresponding to the playback time is searched.

The content editing unit 19 edits the content stored in the fragment file storage unit 15 and the playlist file storage unit 16 according to the operation of the operation unit 14 by the user. The content editing unit 19 may display an editing screen on which the content can be edited on the display unit 13. As an example of content editing, the content editing unit 19 performs replacement editing in which a part of a plurality of fragment files of the content is replaced with another replacement file.

When editing the content, the content editing unit 19 determines the content to be edited, and according to a predetermined condition such as a category among the contents stored in the fragment file storage unit 15 and the playlist file storage unit 16, for example. The contents may be sequentially taken out and edited, or the contents selected according to the operation by the user via the operation unit 14 may be edited. Further, in the replacement editing, the timing and timing for replacing the replacement file may be determined according to the passage of a predetermined time, or may be determined according to the operation by the user via the operation unit 14.

Further, as shown in FIG. 2, the content editing unit 19 determines the replacement start position as the time to start the reproduction of the replacement file on the reproduction time axis of the content, and ends the reproduction of the replacement file. Determine the replacement end position as time. The replacement start position and the replacement end position may be determined according to the operation of the user via the operation unit 14, or may be determined in advance for each content or each replacement file.

Further, in the replacement editing, the content editing unit 19 may determine the replacement start position and the replacement end position without changing the total reproduction time of the content. That is, on the content reproduction time axis, the replacement start position and the replacement end position do not change before and after the replacement editing. If the replacement start position is set to a position less than the playback time of the replacement file retroactively from the playback end position (before replacement) of the content on the content playback time axis, the replacement file can be replaced to replace the content (before replacement). The playback end position (after replacement) is extended, and the total playback time of the content becomes longer. Therefore, the replacement start position may be determined to be at least the playback time or longer of the replacement file, going back from the playback end position (before replacement) of the content. Further, the replacement end position may be determined by adding the playback time of the replacement file to the replacement start position based on the replacement start position and the playback time of the replacement file.

Further, when replacing a part of a plurality of fragment files of the content with the replacement file, the content editing unit 19 sets the fragment file located immediately before the replacement file as the front file and the replacement file as shown in FIG. The fragment file located immediately after is determined as the rear file. In other words, the fragment file located immediately before the replacement start position or the fragment file containing the replacement start position is the forward file, and the fragment file located immediately after the replacement end position or the fragment file containing the replacement end position is used. It is a backward file.

When the replacement start position corresponds to the boundary of continuous fragment files on the content reproduction time axis, that is, when the reproduction end position of a predetermined fragment file (first fragment file) corresponds to the content editing unit 19 Determines the first fragment file as the front file of the replacement file.

On the other hand, when the replacement start position corresponds to the playback intermediate position of the predetermined fragment file (first fragment file), the content editing unit 19 uses video editing software such as FFmpeg to display the first fragment file. The part behind the replacement start position is cut, and the first fragment file is edited and re-encoded so that the replacement start position is the playback end position. At this time, the cut editing of the first fragment file may be performed in units of frames constituting the first fragment file, and the replacement start position may be adjusted according to the boundary of the nearest frame. Then, the content editing unit 19 determines the edited first fragment file as the forward file.

Further, when the replacement end position corresponds to the boundary of continuous fragment files on the content reproduction time axis, that is, when the reproduction start position of a predetermined fragment file (second fragment file) corresponds to the content edit. Part 19 determines the second fragment file as the back file of the replacement file.

On the other hand, when the replacement end position corresponds to the playback intermediate position of the predetermined fragment file (second fragment file), the content editing unit 19 uses video editing software such as FFmpeg to display the second fragment file. The part ahead of the replacement end position is cut, and the second fragment file is edited and re-encoded so that the replacement end position is the playback start position. At this time, the cut editing of the second fragment file may be performed in units of frames constituting the second fragment file, and the replacement end position may be adjusted according to the boundary of the nearest frame. Then, the content editing unit 19 determines the second fragment file after editing as the rear file.

Then, when the content editing unit 19 determines the front file and the rear file in the replacement editing, the content editing unit 19 inserts the replacement file between the front file and the rear file as the playback order of the plurality of fragment files constituting the content. , Edit the content so that the time series from the first fragment file to the second fragment file of the original content becomes the time series of the front file, the replacement file, and the rear file.

Further, the content editing unit 19 edits the playlist file of the content and replaces the playback order from the first fragment file to the second fragment file with the playback order of the front file, the replacement file, and the rear file. Redefine the playback order of multiple fragment files. At this time, for the replacement file portion of the playlist file, the replacement start position is set to the playback start time, and the total playback time set in advance is set for editing. If the cut edit is performed for the front file, the playback start time of the first fragment file is set as it is for the front file part of the playlist file, and the total playback time of the first fragment file is started. , Subtract the cut time to set the total playback time and edit. Also, when cut editing is performed for the rear file, the replacement end position for the rear file part of the playlist file (the time earlier than the playback start time of the second fragment file by the cut time). Is set as the playback start time, and the cut time is subtracted from the total playback time of the second fragment file to set the total playback time for editing.

Next, a specific example of the replacement editing operation by the content editing unit 19 will be described with reference to the content configuration example of FIG. 2 and the flowchart of FIG. In this specific example, as shown in FIG. 2, it is assumed that the original content includes a plurality of fragment files "001.TS" to "006.TS" subdivided at 10-second intervals. In this example, "10:00:15" is specified as the replacement start position (step S1), and the replacement including the fragment files "102.TS" to "105.TS" subdivided at 8-second intervals. Replace the file. At this time, since the total playback time of the replacement file is 32 seconds, the replacement end position can be calculated as "10:00:47" 32 seconds after the replacement start position (step S2).

In this specific example, it can be detected that the first fragment file "002.TS" corresponds to the replacement start position in the original content (step S3). Since the replacement start position "10:00:15" is in the middle of playing the first fragment file "002.TS" (step S4: YES), the replacement of the first fragment file "002.TS" is performed. The file behind the start position is cut and re-encoded as the front file for the replacement file (step S5). If the replacement start position is at the reproduction end position of the first fragment file (step S4: NO), the first fragment file is set as the forward file (step S6).

Further, in this specific example, it can be detected that the second fragment file "005.TS" corresponds to the replacement end position in the original content (step S7). Since the replacement end position "10:00:47" is in the middle of playing the second fragment file "005.TS" (step S8: YES), the replacement of the second fragment file "005.TS" is performed. The front of the end position is cut and re-encoded as a rear file with respect to the replacement file (step S9). If the replacement end position is at the reproduction start position of the second fragment file (step S8: NO), the second fragment file is set as the rear file (step S10).

Then, the replacement file is inserted between the front file and the rear file (step S11), the front file "002.TS", the replacement files "102.TS" to "105.TS", and the rear file "005.TS". The playlist file is edited in chronological order (step S12).

The original first fragment file to the original second fragment file of the replaced content may be deleted from the fragment file storage unit 15, but will be restored when the next content is edited. As a result, it may be stored in the fragment file storage unit 15 so that the original position can be known in association with each replacement edit or replacement of each replacement file. The content editing unit 19 restores the original content including the original second fragment file from the original first fragment file by the content restoration operation, thereby editing new content while maintaining the original content. For example, it is possible to perform a new replacement edit in which a new replacement file is replaced with respect to a new replacement start position or a new replacement end position.

Next, the client terminal 3 will be described. The client terminal 3 is a content reproduction device that receives content from the distribution server 2 and reproduces video and audio of the content. The client terminal 3 may be a device that can be connected to the distribution server 2 via the network 4 and can reproduce contents, for example, a smartphone, a tablet terminal, a mobile phone terminal, and a personal computer (including a notebook computer). ) Or any other computer.

The client terminal 3 includes, for example, a control unit 20, a storage unit 21, a communication unit 22, a display unit 23, a voice output unit 24, and an operation unit 25. Further, the client terminal 3 includes a player 26 for reproducing the content, and the player 26 is composed of an application (program) stored in the storage unit 21 and controlled by the control unit 20 to operate.

The control unit 20 has a CPU and the like, and is configured to control the overall operation of the client terminal 3. The storage unit 21 has a memory such as a ROM or RAM, and a recording medium such as a hard disk, and is configured to store information, data, programs, and the like controlled by the control unit 20. The communication unit 22 is an interface for the client terminal 3 to connect to a network 4 such as the Internet or a LAN, that is, the client terminal 3 is connected to the distribution server 2 via the network 4.

The display unit 23 is a display capable of displaying an image such as a moving image or a still image, and may be configured by any display device such as a liquid crystal display, an organic EL, or an LED, and may further have a touch panel function. The audio output unit 24 is composed of a speaker and a headphone terminal capable of outputting audio. The operation unit 25 is an input device such as a keyboard, a mouse, and other keys that accept input operations from a client. When the display unit 23 is composed of a touch panel, the operation unit 25 may be integrally configured with the display unit 23.

The player 26 presents playable content to the client via the display unit 23, and when the client selects the content desired to be played back, the player 26 receives the playlist file of the content from the distribution server 2. Further, the player 26 may select the content to be played by directly inputting the link information of the content to the client operating the operation unit 25. The player 26 analyzes the received playlist file, sequentially receives a plurality of fragment files defined in the playlist file in the order of reproduction from the distribution server 2, and outputs the video and audio of the fragment file to the display unit 23 and audio output. Reproduced by unit 24. The player 26 may receive and play back a plurality of fragment files in order from the beginning, or may receive and play back the fragment files in the middle in order. The player 26 is a content player such as a video player, and may be an application that operates independently on the client terminal 3, or an application that operates by being incorporated in a browser.

In the present embodiment, as described above, the distribution server 2 is a content editing device that edits content including a plurality of fragment files to be reproduced in chronological order and a playlist file that defines the reproduction order of the plurality of fragment files. In order to replace a part of the plurality of fragment files with a predetermined replacement file, the content editing unit 19 sets the replacement start position and the replacement end position of the replacement file on the content reproduction time axis. When the determination is made and the replacement start position corresponds to the playback intermediate position of the first fragment file, the first fragment file is edited so that the replacement start position is the playback end position, and the first fragment file is edited. If the file is the front file for the replacement file and the replacement end position corresponds to the playback middle position of the second fragment file, the second fragment file is edited so that the replacement end position is the playback start position, and the second fragment file is edited. The fragment file of 2 is set as the rear file for the replacement file, the replacement file is inserted between the front file and the rear file, the playlist file is edited, and the first fragment file to the second fragment file are used. The playback order is changed to the playback order of the front file, the replacement file, and the rear file.

With the above configuration, according to the present embodiment, the distribution server 2 as the content editing device sets the reproduction start position and the reproduction end position of the replacement file even at the reproduction intermediate position of the fragment file constituting the content. be able to. Therefore, the replacement file can be inserted at a position in the content according to the user's intention. In addition, the user can appropriately change the time interval (scale) and the number of fragment files constituting the replacement file, and the replacement file can be inserted according to the user's intention. As a result, the editing of the original content is not restricted, and the generation of the replacement file is not restricted, so that the content can be edited seamlessly (smoothly). For example, when an advertisement or CM is applied as a replacement file, the degree of freedom of the advertisement or CM can be improved.

The content editing method of the present invention is configured to include the same functions as the content editing device of the distribution server 2 described above as a process. Further, the content editing program of the present invention is configured to cause a computer (control unit 10) to execute the same function as the content editing device of the distribution server 2 described above as a step.

In the present embodiment, an example of inserting one type of replacement file into one place of a plurality of fragment files of the content has been described, but according to the present invention, the same type is inserted into one place of a plurality of fragment files of the content. You may insert a replacement file of, or you may insert a different type of replacement file.

Further, in the present embodiment, an example in which the distribution server 2 as a content editing device performs replacement editing in which a part of a plurality of fragment files is replaced with a predetermined replacement file as content editing has been described. Content editing is not limited to replacement editing. For example, in another embodiment, the distribution server 2 as a content editing device may be configured to perform deletion editing for deleting a part of a plurality of fragment files as content editing.

In the deletion edit, the content editing unit 19 sets the deletion start position indicating the time to start the deletion of the content and the time to end the deletion of the content in the same manner as the replacement start position and the replacement end position of the replacement edit. Determines the indicated deletion end position. In the deletion edit, the deletion start position and the deletion end position are located at predetermined time intervals before the deletion edit on the playback time axis of the content, but the same time after the deletion edit (referred to as the deletion position). become. In addition, after the deletion and editing, the playback start position and playback end position of each fragment file located behind the deletion position on the content playback time axis are advanced by the deleted time, and the total playback time of the content is also deleted. Only the time you spend will be subtracted.

Further, in the deletion edit, the content editing unit 19 determines the fragment file located immediately before the deletion start position or the fragment file including the deletion start position as the forward file in the same manner as the replacement editing, and immediately after the deletion end position. Determines the fragment file located in or the fragment file containing the deletion end position as the back file. For example, when the deletion start position corresponds to the reproduction intermediate position of the first fragment file, the content editing unit 19 edits the first fragment file so that the deletion start position becomes the reproduction end position, and the first fragment file. Determine the fragment file as the forward file. Further, when the deletion end position corresponds to the reproduction intermediate position of the second fragment file, the content editing unit 19 edits the second fragment file so that the deletion end position becomes the reproduction start position, and the second fragment file is used. Determine the fragment file as the back file.

Further, in the deletion editing, the content editing unit 19 sequentially connects the front file and the rear file in this order as the playback order of the plurality of fragment files constituting the content, and the first fragment file to the second fragment file of the original content is used. Edit the content so that the time series up to the fragment file is the time series of the front file and the back file.

Then, in the deletion editing, the content editing unit 19 edits the playlist file of the content and replaces the playback order from the first fragment file to the second fragment file with the playback order of the front file and the rear file. Redefine the playback order of multiple fragment files. At this time, for each fragment file located behind the rear file on the content playback time axis, the playback start time of each playlist file is set earlier by the deleted time, and the total playback time of each is set. Is set and edited by subtracting only the deleted time. If the cut edit is performed for the front file, the playback start time of the first fragment file is set as it is for the front file part of the playlist file, and the total playback time of the first fragment file is started. , Subtract the cut time to set the total playback time and edit. In addition, when cut editing is performed for the rear file, the deletion position is set to the playback start time for the rear file part of the playlist file, and the cut is performed from the total playback time of the second fragment file. Subtract the time to set the total playback time and edit.

With the above configuration, the distribution server 2 as the content editing device can set the deletion start position and the deletion end position even at the reproduction intermediate position of the fragment file constituting the content. Therefore, the scene of the content can be deleted at a position in the content according to the user's intention. In addition, the user can appropriately change the time interval (scale) of the scene to be deleted, and the scene can be switched according to the user's intention. As a result, since the editing of the original content is not restricted, it is possible to edit the content to be played seamlessly (smoothly) according to the user's intention.

Further, the original first fragment file to the original second fragment file of the deleted and edited content may be deleted from the fragment file storage unit 15, but can be restored at the next editing of the content. As such, it may be stored in the fragment file storage unit 15 in association with each deletion edit or each deletion position.

The distribution server 2 as the content editing device of the present invention may perform either replacement editing or deletion editing in editing one content, or both replacement editing and deletion editing. You may.

Further, in the above-described embodiment, an example in which the content editing device of the present invention is provided in the distribution server 2 for distributing the content has been described, but according to another embodiment, the content editing device of the present invention is a client server. In the system, it may be provided in various devices on the server side, for example, a collection server that is communicably connected to the distribution server 2 and collects content, an editing server that edits the content, and a content distribution server 2. It may be provided in a user terminal or the like for uploading to a collection server.

The present invention can be appropriately modified to the extent that it does not contradict the gist or idea of the invention that can be read from the claims and the entire specification, and a content editing device, a content editing method, and a content editing program accompanied by such changes are also possible. It is also included in the technical idea of the present invention.

1 Content distribution system 2 Content distribution server 3 Client terminal 10 Control unit 11 Storage unit 15 Fragment file storage unit 16 Playlist file storage unit 17 Replacement file storage unit 18 Content distribution unit 19 Content editing unit 20 Control unit 21 Storage unit 26 Player

Claims (3)

A content editing device that edits content including a plurality of fragment files played in chronological order and a playlist file that defines the playback order of the plurality of fragment files.
When performing replacement editing in which a part of the plurality of fragment files is replaced with a predetermined replacement file, the replacement start position and replacement end position of the replacement file are determined on the playback time axis of the content, and this is determined. When, the replacement start position and the replacement end position are determined based on the playback time of the replacement file without changing the total playback time of the content after the replacement editing.
When the replacement start position corresponds to the reproduction intermediate position of the first fragment file, the first fragment file is edited so that the replacement start position becomes the reproduction end position, and the first fragment is used. The file is set as the front file for the replacement file.
When the replacement end position corresponds to the reproduction intermediate position of the second fragment file, the second fragment file is edited so that the replacement end position becomes the reproduction start position, and the second fragment is used. The file is set as a rear file with respect to the replacement file.
By inserting the replacement file between the front file and the rear file, the content is edited.
By editing the playlist file, the playback order from the first fragment file to the second fragment file is replaced with the playback order of the front file, the replacement file, and the rear file . The content editing device for the replacement file portion is characterized in that the replacement start position is set to the reproduction start time of the replacement file and the reproduction time of the replacement file is set for editing. A content editing method for editing content consisting of a plurality of fragment files played in chronological order and a playlist file defining the playback order of the plurality of fragment files.
When performing replacement editing in which a part of the plurality of fragment files is replaced with a predetermined replacement file, the replacement start position and replacement end position of the replacement file are determined on the playback time axis of the content, and this is determined. When, the replacement start position and the replacement end position are determined based on the playback time of the replacement file without changing the total playback time of the content after the replacement editing.
When the replacement start position corresponds to the reproduction intermediate position of the first fragment file, the first fragment file is edited so that the replacement start position becomes the reproduction end position, and the first fragment is used. The file is set as the front file for the replacement file.
When the replacement end position corresponds to the reproduction intermediate position of the second fragment file, the second fragment file is edited so that the replacement end position becomes the reproduction start position, and the second fragment is used. The file is set as a rear file with respect to the replacement file.
By inserting the replacement file between the front file and the rear file, the content is edited.
By editing the playlist file, the playback order from the first fragment file to the second fragment file is replaced with the playback order of the front file, the replacement file, and the rear file . The content editing method for the replacement file portion is characterized in that the replacement start position is set to the playback start time of the replacement file and the total playback time of the replacement file is set for editing. A content editing program that edits content consisting of a plurality of fragment files played in chronological order and a playlist file that defines the playback order of the plurality of fragment files.
When performing replacement editing in which a part of the plurality of fragment files is replaced with a predetermined replacement file, the replacement start position and replacement end position of the replacement file are determined on the playback time axis of the content, and this is determined. When, the step of determining the replacement start position and the replacement end position based on the playback time of the replacement file without changing the total playback time of the content after the replacement editing, and
When the replacement start position corresponds to the reproduction intermediate position of the first fragment file, the first fragment file is edited so that the replacement start position becomes the reproduction end position, and the first fragment is used. The step of making the file a front file for the replacement file, and
When the replacement end position corresponds to the reproduction intermediate position of the second fragment file, the second fragment file is edited so that the replacement end position becomes the reproduction start position, and the second fragment is used. The step of making the file a backward file with respect to the replacement file, and
A step of editing the content by inserting the replacement file between the front file and the rear file, and
By editing the playlist file, the playback order from the first fragment file to the second fragment file is replaced with the playback order of the front file, the replacement file, and the rear file . For the replacement file portion, a step of setting the replacement start position to the playback start time of the replacement file and setting and editing the total playback time of the replacement file, and
A content editing program characterized by having a computer run.

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