WO2004112034A1 - Information creation device, method, and program - Google Patents

Abstract

Especially data can be reproduced in real time. An edit list editing unit creates an edit list (301) that represents the result of edit. A play list creation unit creates a play list according to the edit list. In the edit list (301), a clip information file (321) for managing an image data file (323) and an audio data file (324) as reproduction objects is specified. In the play list (302), the image data file (323), the audio data file (324), and a bridge essence (331) are specified as reproduction objects. The present invention is applicable to an editing device.

Description

 Specification

 Information creation apparatus and method, and program

 The present invention relates to an information creating apparatus, an information creating method, and a program, and more particularly, to an information creating apparatus, an information creating method, and a program capable of reproducing AV (Audio Visual) data in real time. Background art

 In recent years, recording media such as CD-RW (Compact Disk-ReWri table) and DVD-RW (Digital Versatile Disc-ReWrit ab 1 e), which can repeatedly write and erase data, have become popular due to their lower prices. I am doing it.

 In addition, an editing device has been proposed that performs non-destructive editing of AV data by recording an editing list (edit list) indicating an editing operation on AV data recorded on a recording medium on the recording medium (for example, Japanese Patent Application Laid-Open No. 11-88281).

 The non-destructively edited AV data is reproduced by being read from the recording medium according to the edit list.

 However, the edit list describes the editing operation and is not created in consideration of the playback of the AV data, so that the AV data could not be played in real time. Disclosure of the invention

The present invention has been made in view of such a situation, and has been made in view of the above circumstances. It is.

 An information creation apparatus according to the present invention comprises: a reproduction control information acquisition means for acquiring first reproduction control information for designating a management file for managing data as a reproduction target; and a first reproduction information acquired by reproduction control information acquisition means. Creating means for creating second playback control information for designating a file composed of data as a playback target based on the control information. The first playback control information describes the edit points set for the data, and the playback device can play back the data as an edit result based on the edit points in real time. Determining means for determining whether or not the data can be reproduced, and when the reproducing apparatus determines that the data as the editing result cannot be reproduced in real time, the data in a predetermined range in which the editing point is set. And rearranging means for rearranging the data, wherein the creating means creates second playback control information for designating also a file composed of data relocated by the relocating means as a playback target. I do.

 The information creation method according to the present invention includes a playback control information acquisition step for acquiring first playback control information for designating a management file for managing data as a playback target; and a first playback control information acquisition step for acquiring the first playback control information. And generating a second playback control information for designating a file composed of data as a playback target based on the playback control information.

The program according to the present invention comprises: a reproduction control information acquisition step for acquiring first reproduction control information for designating a management file for managing data as a reproduction target; and a first reproduction control information acquisition step for acquiring the first reproduction control information. Creating a second playback control information for designating a file composed of data as a playback target based on the playback control information. And features.

 In the present invention, first playback control information for designating a management file for managing data as a playback target is obtained, and a file composed of data is designated as a playback target based on the first playback control information. All the second playback control information is created. BRIEF DESCRIPTION OF THE FIGURES

 FIG. 1 is a block diagram showing a configuration example of a video program production support system to which the present invention is applied, FIG. 2 is a block diagram showing a configuration example of the editing terminal device in FIG. 1, and FIG. Fig. 4 shows an example of the structure of the directory structure for managing data by the file system. Fig. 4 shows a detailed example of the structure of the directory structure in Fig. 3. Fig. 5 shows the directory structure in Fig. 3. FIG. 6 is a flowchart illustrating an edit list creation process of the edit list editing unit in FIG. 2, FIG. 7 is a diagram illustrating an example of an edit list, FIG. Fig. 9 is a flowchart for explaining a playlist creation process of the playlist creation unit in Fig. 2; Fig. 9 is a diagram showing an example of a playlist; Fig. 10 is a diagram showing an example of a playlist; Fig. 1 shows the structure of the playback device. FIG. 12 is a block diagram showing an example of the configuration. FIG. 12 is a flowchart for explaining the reproduction process of the reproduction apparatus in FIG. 11, and FIG. 13 is a diagram showing the concept of an edit list and a playlist. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described. The correspondence between the configuration requirements described in the claims and the specific examples in the embodiments of the present invention is as follows. This statement describes the invention described in the claims. This is to confirm that the specific examples supported are described in the embodiments of the invention. Therefore, even if there is a specific example that is described in the embodiment of the invention but is not described here as corresponding to the constituent requirements, it means that the specific example is It does not mean that it does not address configuration requirements. Conversely, even if a specific example is described here as corresponding to a configuration requirement, this means that the specific example does not support a configuration requirement other than the configuration requirement. Not even a thing.

 Furthermore, this description does not mean that the invention corresponding to the specific example described in the embodiment of the invention is all described in the claims. In other words, this description is an invention corresponding to the specific example described in the embodiment of the invention, and the existence of an invention not described in the claims of this application, that is, It does not exclude the existence of inventions filed or added by amendment.

An information creating device according to claim 1, wherein the information creating device creates information to be provided to a playback device that reproduces predetermined data (for example, an editing terminal device 66 in FIG. 1). Control information acquiring means (for example, an 8th clip information file 15 1 in FIG. 4) for acquiring first playback control information (for example, an edit list) that designates a playback target. The playlist creation unit 86 of FIG. 2 that performs the process of step S21 in the figure is configured from the data based on the first playback control information acquired by the playback control information acquisition unit. Creation means for creating second playback control information (for example, a playlist) that specifies a file to be played (for example, the image data in FIG. 4—the evening file 15 2) , The playlist creation section 8 6 of FIG. 2 for executing processing of the scan Tetsupu S 2 7 of Figure 8) and It is characterized by having.

 3. The information creation device according to claim 2, wherein the first playback control information describes an edit point set for the data, and the playback device edits based on the edit point. Judgment means for judging whether or not the data as a result can be reproduced in real time (for example, the playlist creation unit 86 of FIG. 2 executing the processing of step S24 of FIG. 8) If the determination unit determines that the data as the editing result cannot be reproduced in real time, the reproducing device rearranges data in a predetermined range in which the editing point is set. (For example, a playlist creation unit 86 in FIG. 2 for executing the process of step S25 in FIG. 8), wherein the creation unit is relocated by the relocation unit. Composed of the above data Also create a second playback control information specifying the reproduction object files that are (for example, step S 2 8 of Figure 8) it can be characterized.

The information creating method according to claim 3 is a method for creating an information to be provided to a playback device that reproduces predetermined data by an information creating device (for example, an editing terminal device 66 in FIG. 1). , Playback control information for acquiring first playback control information (for example, an edit list) for designating a management file (for example, the clip information file 15 1 in FIG. 4) for managing the data as a playback target. Based on the acquisition step (for example, step S21 in FIG. 8) and the first reproduction control information acquired by the processing of the reproduction control information acquisition step, a file (for example, A creation step for creating second playback control information (for example, a playlist) that specifies the image data file 15 2) of FIG. Characterized in that it comprises a step S 2 7) and. A specific example of each step of the program described in claim 4 is also the same as the specific example in the embodiment of the invention of each step of the information creation method described in claim 3.

 FIG. 1 is a diagram showing a configuration example of a video program production support system to which the present invention is applied.

 In FIG. 1, a video program production support system 51 is a system provided in, for example, a television broadcast station that broadcasts television signals, a video content production company for videos and movies, and the like. This is a system for producing video programs that are video works such as movies. In addition, the video program production support system 51 enables a plurality of departments responsible for the production of video programs to consistently use the metadata etc. added to the video programs, which are configured in electronic file format. This is a system for efficiently creating video programs.

 As shown in FIG. 1, the video program production support system 51 includes a planning terminal device 61 for planning a video program, a network 62 to which the planning terminal device 61 is connected, and a network 6 2. The reporting terminal device 6 3, the imaging device 64 constituting the reporting terminal device 63, and a field PC / PDA (Personal Computer / Personal Digital Assistance) 6 5 (hereinafter, referred to as Similarly, it is composed of an editing terminal device 66 connected to a network 62, and an optical disk 67 serving as a recording medium.

The planning terminal device 61 is composed of, for example, an information processing device such as a personal computer and its peripheral devices, and is provided in a planning section or the like where a video program is planned. This planning and planning department is in charge of the overall production of the video program, and is responsible for the production of video programs. This department creates a scenario (scenario) for the video program by planning and planning the ram, and instructs other departments such as the reporting department and editorial department, which will be described later, on the content of the production work. The planning terminal device 61 performs processing such as, for example, creating composition table metadata in an electronic file format including production instruction information corresponding to a scenario of a video program for each video program. The planning terminal device 61 supplies the generated composition table metadata to the reporting terminal device 63 and the like via the network 62. As a result, the planning and organization department instructs the reporting department and others on the scenes and contents to be covered or photographed.

 The news gathering terminal device 63 is a terminal device group used by a news gathering department that performs news gathering, and includes, for example, an imaging device 64 and a field PC 65. This reporting department, for example, is a department that actually performs interviews at the production site in accordance with production instructions and scenarios from the planning and configuration departments, and shoots video of each scene that composes the video program, and also reports the shooting situation Department.

The imaging device 64 is, for example, a video camera such as a camcorder (registered trademark), and is a device used for reporting news programs for broadcasting, shooting games such as sports, and photographing video contents such as movies. is there. The imaging device 64 is connected to the network 62, and acquires the configuration table metadata from the planning terminal device 61 via the network 62, for example. Then, the imaging device 64 displays the acquired composition table metadata on a predetermined display unit or the like, and causes a photographing staff such as a photographer to recognize the content to be captured. Further, the imaging device 64 is operated by the imaging staff, and performs imaging (imaging) of each scene constituting the image program based on the acquired production instruction information of the composition table metadata. The images (videos) obtained through the shooting and the audio data are transferred to an optical disk 67 On a recording medium.

 In addition, the imaging device 64 may be configured to store not only original image data, which is an image obtained by imaging, but also low resolution (low resolution) image data (hereinafter referred to as low resolution data). ) Can be recorded on the optical disc 67. The original image data is large, but it is high-quality image data, so it is used for finished video programs. On the other hand, the mouth-to-mouth image is image data corresponding to an image of a frame having a small number of pixels, which is generated by, for example, thinning out the number of pixels of each frame from the original image data.

 Further, the low-resolution data may be encoded by, for example, the MPEG4 (Moving Picture Experts Group Group 4) method. This low-resolution data has a lower image quality than the original image data, but has a small amount of data, so the processing load such as transmission and reproduction is light, and is mainly used for rough editing processing.

 The optical disc 67 on which image data, audio data, and the like are recorded by the imaging device 64 is transported to, for example, an editing department or a field PC 65, which will be described later, and used. However, since it takes a certain amount of time to transport the optical disk 67, the imaging device 64 is connected to the planning terminal device 61, the field PC 65, or the editing terminal device 6 via the network 62. For example, photographed image data and audio data may be supplied to 6 or the like. In that case, the imaging device 64 replaces the image data obtained by imaging with the data amount corresponding to the image data in order to shorten the transfer time (to reduce the load of the transfer process). It is advisable to supply a small lores over night.

What is the process of transferring low-resolution data by the imaging device 64? May be performed at an appropriate timing, may be performed in parallel with the imaging processing, or may be performed at once after the imaging processing is completed. Thus, prior to the transport of the optical disc 67, By transferring the low resolution image, the editing department can perform editing work at a relatively early stage (for example, concurrently with the imaging process) even if the transported optical disk 67 has not arrived. Can increase the production efficiency of video programs. As described above, when low-resolution data is transmitted via the network 62, the imaging device 64 may, for example, record only the original image data and audio data on the optical disk 67. (It is acceptable not to record the low resolution on the optical disk 67).

 Note that the recording medium on which the imaging device 64 records the video content and the like is not limited to the above-described example of the optical disk 67, and may be any recording medium. For example, magneto-optical disks including MD (Mini-Di sc) (registered trademark) and MO (Magne to Optical disk), magnetic disks including flexible disk, DV (Digital Vi deo) and VHS (Vi It may be a magnetic tape used for a deo home system, a semiconductor memory including a flash memory, or the like.

The field PC 65 includes, for example, a portable information processing device such as a notebook personal computer and a PDA, and peripheral devices. The field PC 65 is connected to the imaging device 64 by various wired or wireless lines, and can share, for example, the configuration table metadata, image data, and audio data with the imaging device 64. it can. The field PC 65 acquires, for example, configuration table metadata from the planning terminal device 61 via the network 62, Or acquire the composition table metadata. The field PC 65 displays the acquired composition table metadata on a predetermined display unit, so that the person in charge of the reporting department recognizes the content to be collected and photographed.

 Further, the field PC 65 generates shooting condition information, which is information on the shooting and shooting conditions, based on the input of the person in charge of the news gathering department, which is a user, and uses the generated shooting condition information in the composition table metadata. Add it to the appropriate column in. As described above, the field PC65 edits the composition table metadata by adding the shooting status information to the corresponding column in the composition table metadata. This shooting status information is, for example, text data described from various viewpoints for each take or each reporting location, and is information that is useful in the subsequent editing processing. Further, the field PC 65 supplies the imaging condition information as metadata to the imaging device 64, and adds it to the image data and audio data obtained by the imaging device 64.

The editing terminal device 66 is composed of, for example, an information processing device such as a personal computer and peripheral devices, and is provided in an editing section that performs editing processing of image data and audio data. The editing department edits the image data and audio data obtained by the imaging device 64 based on the production instructions and scenarios by the planning and composition department, and the composition table reflecting the coverage in the reporting department. The department that completes the video program. The editing terminal device 66 acquires, for example, the configuration table metadata and the low resolution from the imaging device 64 via the network 62. Further, the editing terminal device 66 obtains original image data and audio data from the optical disk 67 on which the image data and audio data are recorded in the imaging device 64. Furthermore, the editing terminal device 6 6 can also directly obtain a production instruction (editing instruction) from the planning terminal device 61 or the field PC 65 via the network 62. . The editing terminal device 66 suitably reproduces and displays image data and audio data based on the acquired composition table metadata. For example, the editing terminal device 66 is operated by a user to transfer a low resolution image obtained via the network 62 or original image data and audio data recorded on the optical disk 67 to a scenario. Display them continuously in the order according to, or display only the image data of the desired clip. When playing back the original image data recorded on the optical disk 67, the editing terminal device 66 reads, for example, data recorded on the optical disk 67, or reads data from the optical disk 67. A disk device or the like, which is a recording / reproducing device for writing or writing data, is used.

 Further, the editing terminal device 66 not only reproduces and displays necessary image data and the like in a suitable order based on the configuration table metadata, for example, but also performs editing processing of the image data and the like obtained by the interview. Do. The editing process includes a rough editing process and a main editing process.

 The rough editing process is a simple editing process for image data and audio data. For example, when the editing terminal device 66 acquires a plurality of clip data corresponding to a clip which is a unit indicating one imaging process in the rough editing process, for example, the editing terminal device 66 Select the clip data to be used in this editing, select the required image or audio part from the selected clip data (Logging), and edit the image or audio part corresponding to the selected image or audio part. The start position (IN point) and the edit end position (OUT point) are set using, for example, time code, and the corresponding portion is extracted (Ingesting) from the above-described clip data.

Note that a clip is a unit that indicates the time from the start of imaging to the end of imaging in that imaging processing as well as one imaging processing. It is also a unit that indicates the length of various data obtained from the data, and is a unit that indicates the data amount of various data obtained by the imaging process. Further, the clip may also indicate the aggregate itself of the various types of data. This editing processing connects the clip data that has been subjected to the rough editing processing to the final image data. This is the process of adjusting the image quality and creating complete package data, which is data for broadcasting in programs and the like.

 Note that each of the above-described planning terminal device 61, imaging device 64, field PC 65, editing terminal device 66, and the like may be configured by a plurality of devices. For example, one editing terminal device 66 acquires image data and the like obtained by a plurality of imaging devices 64 via the optical disk 67 and the network 62, and performs editing processing on the data. May be performed, or the data supplied from one imaging device 64 may be edited by a plurality of editing terminal devices 66.

Conversely, it has been described that the above-described devices such as the planning terminal device 61, the imaging device 64, the field PC 65, and the editing terminal device 66 are configured separately. However, the present invention is not limited to this, and some or all of the functions of each device may be integrated with each other. The video program production support system 51 is connected to a network 62 separately from, for example, the planning terminal device 61, the imaging device 64, the field PC 65, and the editing terminal device 66 described above. A center server (not shown) is provided, and a client / server (Cli) is used with the planning terminal device 61, the imaging device 64, the field PC 65, and the editing terminal device 66 as clients. ent / Server) You may do it.

 FIG. 2 shows a detailed configuration example of the editing terminal device 66 of FIG.

 In FIG. 2, a CPU (Central Processing Unit) 81 of the editing terminal device 66 executes various processes in accordance with programs stored in a ROM (Read Only Memory) 82. In a RAM (Random Access Memory) 83, data and programs necessary for the CPU 81 to execute various processes are stored as appropriate.

 The clip data editing unit 84 controls the output unit 92 to display a GUI (Graphical User Interface) on a display or the like, receives an operation input from the user via the input unit 91, and based on the operation input and the like. The image data, audio data, low-resolution data, or metadata, etc. recorded on the optical disk 67 mounted on the drive 95, or low-resolution data acquired via the communication unit 94. Then, an editing process is performed to generate information on the contents of the editing, information on the edited data, and the like, and supply the generated information to the edit list editing unit 85. The clip data editing unit 84 performs non-destructive editing processing without updating various data to be played back.

The edit list editing unit 85 generates an edit list indicating an editing result based on various types of information generated in accordance with the editing process performed in the clip data editing unit 84, and records the edit list on the optical disk 67. The playlist creating unit 86 creates a playlist based on the edit list, and records the playlist on the optical disc 67. A playlist is information obtained as a result of compiling an edit list. The playlist can include a bridge essence described later as a component. Note that you cannot edit the playlist itself, Each time is edited, a new playlist that reflects the changes is generated. If an edit list is deleted, the corresponding playlist is also deleted.

 The bridge essence creating unit 87 creates a bridge essence. In other words, when playing back the clip data recorded on the optical disk 67 based on the edit list, depending on the physical arrangement of the clip data, the seek result of the drive may cause continuous editing without interruption. May not be able to play. In such a case, the bridge essence creation unit 87 copies the section where continuous playback is impossible to another place, rearranges it so that it is physically continuous, creates a bridge essence, and creates a real-time Guarantee continuous playback.

 The CPU 81, ROM 82, RAM 83, clip data editing section 84, edit list editing section 85, playlist creation section 86, and bridge essence creation section 87 are mutually connected via the bus 88. It is connected. An input / output interface 90 is also connected to the bus 88. The input / output interface 90 is connected to an input unit 91 composed of a keypad mouse, and outputs a signal input to the input unit 91 to the CPU 81. The input / output interface 90 is also connected to an output unit 92 composed of a display and a display.

In addition, the input / output interface 90 includes a storage unit 93 composed of a hard disk, an EEPR0M (Electronic cali ble Erasable and Programmable Read Only Memory), and a network 62. A communication unit 94 that performs data communication with another device via the communication unit 94 is also connected. The drive 95 is used when reading data from or writing data to a removable medium 101 composed of a recording medium such as an optical disk 67, a magnetic disk, a magneto-optical disk, and a semiconductor memory. Next, a file system for managing each data recorded on the optical disk 67, and a directory structure and a file in the file system will be described with reference to FIG.

 As a file system for managing data recorded on the optical disk 67, any file system may be used, for example, by using UDF (Universal Disk Format) or IS09660 (International Organization for Standardization 9660). Is also good. When a magnetic disk such as a hard disk is used instead of the optical disk 67, the file system may be FAT (File Allocation Tables), NTFS (New Technology File System), HFS (Hierarchical File System), or UFS (Unix). (Registered trademark) File System) or the like. Further, a dedicated file system may be used.

 In FIG. 3, a PR0AV directory 132 is provided in a root directory (ROOT) 131. In a lower directory of the PR0AV directory 132, information related to the essence data such as image data and audio data, and an edit list indicating an edited result of the essence data are arranged.

 The PR0AV directory 132 contains index files (INDEX. XML) 134, index files (INDEX. BUP) 135, disc information files (DISCINF0. XML) 136, and disc information files (DISCINF0, BUP) 137, DISCMETA. XML 133, Clip Root Directory (CLPR) 138, and Edit List Root Directory (EDTR) 139 are provided.

The index file 134 contains information recorded on the optical disc 67. It describes all clip data and management information for managing the edit list. The index file 135 is a duplicate of the index file 134, and the reliability is improved by separately recording the two files.

 For example, the index file 13 4 and the index file 13 5 include, as management information for managing clip data, a rinse added to a clip information file for managing clip data described later. Information indicating the correspondence between the ID and the file name of the clip information file is described.

 The disc information file 1336 describes, among the metadata for the entire data recorded on the optical disc 67, information that must be strictly managed inside the playback device, such as the playback start position. ing. The disc information file 1337 is a copy of the disc information file 1336, and is separately recorded in two files to improve reliability.

 In the disk metafile 133, information that can be freely rewritten, such as a disk attribute, is described in the metadata for the entire data recorded on the optical disk 67.

 In the clip root directory 138, clip data is provided in a lower directory, and the edit list root directory 1

In 39, edit list data indicating the editing result of the clip data is provided in a lower directory.

In the clip root directory 138, the data of the clips recorded on the optical disk 67 are recorded separately in different directories for each clip. For example, in the example of Fig. 3, the data of three clips One night, the clip directory (C0001) 141, the clip directory (C0002) 142, and the clip directory (C0003) 144 are recorded in three separate directories.

 That is, each data of the first clip recorded on the optical disc 67 is recorded in a file in a directory below the clip directory 141, and each data of the clip recorded on the optical disc 67 is stored in the clip directory. Each data of the clip recorded in the directory under the directory 142 and the third recorded on the optical disk 67 third is recorded in the file in the directory under the clip directory 144.

 In the edit list root directory 1339, the edit list recorded on the optical disc 67 is recorded in a different directory for each editing process. For example, in the example of FIG. 3, the four edit lists are an edit list directory (E0001) 144, an edit list directory (E0002) 144, an edit list directory (E0003) 144, and Edit list directory (E0004) Recorded in four directories, 147.

That is, the edit list indicating the first edit result of the clip recorded on the optical disc 67 is recorded in a file in the lower directory of the edit list directory 144, and the edit list indicating the second edit result is The edit list that is recorded in the file in the lower directory of the edit list directory 144 and indicates the result of the third edit is managed as a file in the lower directory of the edit list directory 144, and the fourth edit is performed. The edit list showing the result is a directory under the edit list directory 1 4 7 Recorded in the file.

 FIG. 4 shows an example of a file configuration in a directory below the clip directory 141 provided in the clip root directory 1338. In the clip directory 141, each data of the clip initially recorded on the optical disk 67 is provided and managed as a file.

 A clip information file (C0001 C01. SMI) 151, which is a file for managing clips, and an image data file (CO 001V01. MXF), which is a file containing image data of clips, are stored in the clip directory 14 1. 15 2, audio data files (C0001A01.MXF to C0001A08.MXF), which are eight files containing the audio data of each of the eight channels of the clip. A low-resolution data file (C000 1 S01. MXF), which is a file containing resolution data, is a file containing non-real-time data that does not require real-time processing such as clip data and video data as attributes of editing results. Certain non-real-time metadata files (CO 001M01. XML) 1 62, added in frame units of clip data, for example, LTC (L i near Time Code), a real-time data file (C0001R01.BIM) 163, which is a file containing real-time metadata that requires real-time properties such as UMID, and an image data file 152 A picture pointer file (CO 001 101. PPF) 164, which is a file that describes the frame structure (for example, information on the compression format for each picture in MPEG or the like and information such as the offset address from the beginning of the file) Is provided.

In the case of the example in Fig. 4, the image data of the image data file 152, which is data that requires real-time Each of the low-resolution data of the file 161 and the real-time metadata of the real-time metadata file 163 are recorded in one file so that the reading time does not increase.

 Also, the audio data of the audio data files 153 through 160 is required to be real-time at the time of playback, but eight channels are prepared to support multi-channel audio such as 7.1 channels. Each is recorded in a different file. In FIG. 4, the audio data is recorded in eight files, but this is not a limitation. The number of audio data files may be seven or less, or nine or more. Is also good.

 Similarly, the image data of the image data file 152, the mouth-to-mouth data file 161, the mouth-to-mouth data, and the real-time metadata 163 of the real-time metadata 163 may also each include two or more files. May be recorded.

 In FIG. 4, the non-real-time metadata of the non-real-time metadata file 162 that does not require the real-time property is different from the real-time metadata file that requires the real-time property of the real-time metadata file 163. Recorded in. This is to prevent unnecessary metadata such as image data from being read during normal playback, and thereby reduce the processing time of the playback process and the load required for the process. Can be.

The non-real-time metadata file 162 is described in XML (extensible Markup Language) format so as to have versatility. The real-time metadata file 163 is a BIM file compiled from an XML file in order to reduce the processing time of the playback process and the load required for the process. The file configuration example of the clip directory 144 shown in FIG. 4 can be applied to all clip directories corresponding to each clip recorded on the optical disc 67. That is, since the configuration example of the file shown in FIG. 4 can be applied to the other clip directories 144 and 144 shown in FIG. 3, the description thereof is omitted.

 The directory structure of the clip directory 141 is not limited to the example shown in FIG.

Any structure may be used as long as the non-real-time metadata file corresponding to the clip exists (including the clip directory itself).

 FIG. 5 shows an example of a file structure in a directory below the edit list directory 139. In the directory below the edit list directory 144 provided in the edit list root directory 135, there is a list of edit lists indicating the results of the second editing of the data of the clips recorded on the optical disc 67. Are provided and managed as files.

The edit list directory 144 contains edit list files (E000 2E01. SM I) 171, which are files that manage the edited results (edit lists), and the essence data after editing (all clips used for editing). Non-real-time metadata corresponding to the part extracted as edited data in the data) or a file containing a non-real-time metadata newly generated based on the non-real-time metadata Non-real-time metadata file for list (E0002M01.XML) 17 2. Information such as essence data playback procedure (playlist) based on the edited result (edit list) Playlist file (E0002P01.SMI) 173, which is a file containing the image, and the frame structure of the image data reproduced based on the reproduction procedure included in the playlist file 173 (for example, each picture in MPEG or the like) Playlist picture point file (E0001 I 01. PPF) 1 74, which is a file in which information about the compression format and information such as the offset address from the beginning of the file are described. Bridge Essence Image Data File (B0002V01.BMX) 175, which is a file containing image data (Bridge Essence image data) to guarantee real-time playback based on the playback procedure (Playlist) Sound data (PridgeEssential) to guarantee real-time playback based on the playback procedure (playlist) in 1 7 3 (B0002A01.BMX to B0002A04.BMX) 17 6 to 17 9 and the playlist file 1 7 3 playback procedure (play list) Bridge Essence low resolution file (B0002S01.BMX) 180, which is a file that contains low resolution data (mouth data of Bridge Essence) to guarantee real-time playback based on the playlist file 17 Real-time metadata (Blitz) to guarantee real-time playback based on the playback procedure (playlist) in 3

File that contains data

Metadata file (B0002R01. BBM) 18 1 is provided. In Fig. 5, the non-real-time metadata data for the edit list non-real-time metadata file 172, which does not require real-time performance, is different from the real-time metadata, which requires the real-time performance of the bridge essence real-time metadata file 181, Recorded in a file. This is done using the playback procedure (playlist) This is to prevent unnecessary reading out of image data during playback of image data, etc. (while reproducing the edited result). By doing so, the processing time of playback processing, The load required for processing can be reduced.

 The non-real-time metadata file for bridge essence 172 is described in XML format for versatility. The edit list real-time metadata file 18 1 is a BBM format file that complies with the BIM format, which is a compilation of an XML format file in order to reduce the processing time and load required for the playback process. .

 Image data included in the bridge essence image data file 1 75, image data included in the bridge essence audio data files 1 76 to 1 79, and audio data included in the bridge essence low resolution data file 1 80 The low-resolution data and the real-time metadata included in the bridge essence real-time data file 1811 are the images corresponding to the clips managed in the directories below the clip root directory 138 in FIG. 4, respectively. These are data extracted from data, audio data, oral information, and real-time metadata, and are data corresponding to the edited results. These data are read out when the reproduction process is performed based on the reproduction procedure (playlist) included in the playlist file 173.

The image data recorded in the bridge essence image data file 175, the low resolution recorded in the bridge essence low resolution data file 180, and the real-time recorded in the bridge essence real-time data file 181 Metadata is managed as multiple files, depending on the case (multiple files). (Recorded in aisle). Similarly, the audio data recorded in the bridge essence audio data files 176 to 179 may be recorded in three or less or five or more files.

 The example of the file structure of the edit list directory 144 shown in FIG. 5 can be applied to all edit lists (edited results). That is, the example of the file configuration shown in FIG. 5 can be applied to the other edit list directories 14'4, 1446, or 147 shown in FIG. The explanation is omitted.

 Note that the directory structure of the edit list directory corresponding to one editing operation is not limited to the example described above, and the directories (including the edit list directory) below each edit list directory include the edit structure corresponding to the edit. Any configuration may be used as long as there is a non-real-time metadata file for tourists. FIG. 6 is a flowchart for explaining the edit list creation processing of the edit list editing unit 85 in FIG. This edit list creation processing is started when the user operates the input unit 91 and instructs recording of the edit list.

 In step S1, the edit list editing unit 85 creates an edit list directory 1 45 below the edit list root directory 1 39 recorded on the optical disc 67, and proceeds to step S 2. . In step S2, the edit list editing unit 85 creates, in the edit list directory 144 created in step S1, an edit list file 171, which manages an edit list indicating the edited result, Proceed to step S3.

In step S3, the edit list editing section 85 selects the edited edit list. Non-real-time metadata corresponding to the sense data, or a non-real-time metadata file for edit list 172, which is a file containing non-real-time metadata newly generated based on the non-real-time metadata, is added to step S1. Created in edit list directory 1 4 5 created in.

 Specifically, for example, when editing is performed, the edit list editing unit 85 reads the non-real-time metadata included in the non-real-time metadata file 162 of the clip directory 144 recorded on the optical disc 67. Then, a portion corresponding to the edited essence data is extracted, and the extracted non-real-time metadata is used to reconstruct a new non-real-time meta-data with the edited essence data as one clip, and the edit is performed. A non-real-time metadata file for list 172 is created in the edit list directory 145 created in step S1.

 After the process of step S3, the process proceeds to step S4, and the edit list editing unit 85 generates the edit list file 17 1 in step S2, so that the management information for managing the edit list is generated. The contents of the index file 13 4 and the index file 13 5 of the PR0AV directory 13 2 recorded on the optical disk 67 including the above are updated, and the process ends.

 FIG. 7 shows an example of the edit list described in the edit list file 171.

FIG. 7 shows an example of a code in the range specified by the start tag <body> tag and the end tag <body> tag in the edit list. In FIG. 7, the number at the beginning of each line and the colon symbol (:) are added for convenience of explanation, and Not a department. The same applies to FIGS. 9 and 10 described later.

 As described above, the edit list indicates the result of editing, and its contents are described between the <par> tag on the second line and the </ par> tag on the first line. ing.

 The comment sentence “ku! _- Clipl->” on the third line indicates that the code for clip # 1 is described in the fourth to seventh lines below it. In addition, character string! A one indicates that the rest of the line is a comment.

 The “ku ref src =" urn: s immediately te: umid: 060A '' '10 "” on the fourth and fifth lines is the SMPTE of the clip information file 15 1 of the clip # 1 to be played. This indicates that the defined rinse ID is “060「 ”· 10”.

 Line 6 "type =" ecHDoc "begin =" smpte- 30 = 00: 00: 00: 00 "c lipBegin =" s immediately te-30 = 00: 00: 00: 00 "J and line 7 In “clipEnd =" s immediately te-30 = 00: 10: 00: 00 "/>”, “type =" edlDoc ”” indicates that the type (type) of the clip information file is “edlDoc”. "Begin =" smpte-30 = 00: 00: 00: 00 "" indicates that the start position of the edited clip # 1 is set to "TC = 00: 00: 00: 00" based on a certain time. It indicates that it is set. “TC = XX: XX: XX: XX” represents time code.

 "ClipBegin =" smpte-30 = 00: 00: 00: 00 "J indicates that the IN point of clip # 1 is" TC = 00: 00: 00: 00 "based on a certain time. "ClipEnd =" smpte-30 = 00: 10: 00: 00 "" indicates that the OUT point of clip # 1 is set to "TC = 00: 10: 00: 00". That is, the playback time of clip # 1 is 10 minutes.

The comment sentence "ku!-Clip2-->" on the 8th line is from the 9th line below The first and second lines indicate that the code for clip # 2 is described.

 In the ninth and tenth lines, “ku ref src =" urn: smpte: umid: 060A "-OF" ”indicates that the UMID of the clip information file 15 1 of clip # 2 is“ 060A-0F ” It shows that there is.

 Line 1 "type =" edlDoc "begin-" smpte-30 = 00: 10: 00: 00 "clipBegin =" smpte-30 = 00: 02: 00: 00 "J and line 1 In "clipEnd =" smpte-30 = 00: 03: 30: 00 "J," type = "edlDoc" J indicates that the type of the clip formation file 15 1 is "edlDoc", begin = "s immediately te-30 = 00: 10: 00: 00" "sets the start position of the edited clip # 2 to" TC = 00: 10: 00: 00 "based on a certain time. It shows that it is done. In other words, the start position of the clip # 2 is 10 minutes after the start position of the clip # 1 “TO00: 00: 00: 00” and the end of the reproduction of the clip # 1. Accordingly, the edit list in FIG. 7 indicates that clip # 2 is played after clip # 1 is played.

Also, r _c lipBegin = "s immediately te-30 = 00: 02: 00: 00" J means that the IN point of clip # 2 is "TO00: 02: 00: 00" based on a certain time. And "clipEnd =" s immediately te-30 = 00: 03: 30: 00 "" indicates that the OUT point of clip # 2 is set to "TC = 00: 03: 30: 00". When playing back the optical disc 67 based on the edit list in FIG. 7, the editing terminal device 66 firstly describes the management information of the clip data of the clip # 1, etc. Read the clip information file 15 1 with ID “060A to 10”. The editing terminal device 6 6 refers to the clip information file 15 1 Of the data of clip # 1 from "TC = 00: 00: 00: 00" to "TC = 00: 10: 00: 00" Then, the editing terminal device 66 reads the clip information file 151 having the view ID “060A0F” in which the management information of the clip data of the clip # 2 is described. With reference to the clip information file 151, the editing terminal device 66 reads the data of clip # 2 from "TC = 00: 02: 00: 00" to "TC = 00: 03: 30". : 00 ”starts to be played back from“ TC = 00: 10: 00: 00 ”. When all the data is played back, the process ends.

 FIG. 8 is a flowchart illustrating a playlist creation process of the editing terminal device 66 in FIG. This playlist creation processing is performed, for example, by a user by inserting a predetermined edit list from the edit list recorded on the optical disc 67 into the play list by loading the optical disc 67 into the drive 95. In step S 21, which is started when is selected, the playlist creating unit 86 selects the edit selected by the user from the edit list file 17 1 recorded on the optical disc 67. The list (Fig. 7) is read (obtained), interpreted, and the process proceeds to step S22. Specifically, the playlist creation unit 86 determines the UMID of the clip information file 15 1 (management file) in which the management information of the clip specified as the playback target in the edit list is described. Recognize the IN and OUT points (edit points) set for the clip to be played in the playlist.

For example, when an edit list as shown in Fig. 7 is read From the fifth line, “ku ref src =" urn: smpte: u mid: 060A-10 ””, the playlist creation unit 86 reads the clip information file 1 5 1 of the clip # 1 to be played back. Recognizes that the UMID defined by SMPTE is “060Α ··· 10”, “clipBegin =" smpte-30 = 00: 00: 00: 00 ”J on the sixth line and“ clipEnd = "s immediately te-30 = 00: 10: 00: 00"/>", the IN point set for clip # 1 to be played back in the playlist is" TC = 00: 00: 00 : 00 ", and recognizes that the OUT point of clip # 1 is" TO00: 10: 00: 00 ".

 After the processing in step S21, the process proceeds to step S22, where the playlist creation unit 86 determines the file name of the clip data to be played back in the playlist based on the edit list interpreted in step S21. Recognize.

 Specifically, the playlist creation unit 86 recognizes the file name of the clip information file 15 1 to be played back in the edit list specified by the rinse ID from the index file 134 based on the edit list. I do. In other words, the index file 1334 describes the correspondence between the UM ID added to the clip information file 151 and the file name of the clip information file, and refer to the correspondence. Accordingly, the playlist creation unit 86 recognizes the file name of the clip information file 151, which is the playback target recognized in step S21.

Then, the playlist creation unit 86 reads the clip information file 151 based on the file name of the clip information file 151, and reads out the IN and OUT points of the clip described in the edit list. In addition to recognizing the clip data to be played back in the playlist, the clip data is recorded. Recognize the file name.

 After the processing in step S22, the process proceeds to step S23, in which the playlist creating unit 86 retrieves, from the picture pointer file 164, the clip data to be played back in the playlist recognized in step S22. The picture pointer corresponding to the evening is read, and the process proceeds from step S23 to step S24.

 In step S24, the playlist creation unit 86 edits the clip data to be played back in the playlist by editing the clip data described in the edit list, which is set for the clip data. Judgment is made based on the points (IN point and OUT point) as to whether or not playback can be performed in real time (performs real-time playback determination). That is, the playlist creation unit 86 determines whether or not the playback device can play back the edited clip data that is the editing result in real time. Real-time playback availability determination is performed for all seek occurrence positions.

 The details of the real-time reproduction availability determination are described in Japanese Patent Application No. 2002-3666197 and Japanese Patent Application No. 2002-36619. The technology described in these documents can also be applied to the real-time reproduction availability determination performed by the editing terminal device 66 in FIG. In addition, various methods are used to determine whether or not real-time playback is possible, such as, for example, playing back AV data virtually under the same conditions as the playback device and determining whether or not the playback is performed in real time. Is also good.

If the playlist creation unit 86 determines in step S24 that real-time playback is not possible, the process proceeds to step S25, where the bridge essence creation unit 87 sets the bridge essence (bridge essence). Create a file (eg, Bridge Essence Image Data File 1 7 5)). At this time, the bridge essence creation unit 87 determines the creation position of the bridge essence on the optical disc 67 based on the result of the real-time reproduction availability determination, and creates the bridge essence at the creation position.

 That is, depending on the physical arrangement of the clip data, the clip data may not be able to be reproduced continuously (real-time reproduction) without interruption based on the edit list due to the seek performance of the drive. In such a case, the bridge essence creation unit 87 stores, on the optical disk 67, a clip data in a range where continuous playback is impossible, out of the clip data in the range where the edit points (IN point and OUT point) are set. To another location and rearrange them so that they are physically contiguous to create a bridge essence. Since bridge essences are rearranged so that they are physically continuous, continuous playback in real time is guaranteed by playing back bridge essences instead of clip data in a range where continuous playback is not possible. You. The details of the preparation of bridge essence are described in Japanese Patent Application No. 2001-1099341.

 After the process in step S25, the process proceeds to step S26, where the playlist creating unit 86 creates a picture pointer for playlist. That is, the playlist creation unit 86 stores the picture pointer corresponding to the clip data to be played back in the playlist, read from the picture pointer file 1664 in step S23, as a playlist pictogram. A playlist picture pointer file 174 is created as a chair pointer.

After step S26, the process proceeds to step S27, where the playlist creation unit 86 recognizes in step S22 based on the edit list. In the created playlist, a playlist (playlist file 173) for designating a file name of a file of clip data to be played back as a playback target is created, and the process proceeds to step S28.

 In step S28, the playlist creator 86 rewrites the playlist so that playback is performed with reference to the bridge essence. That is, the playlist creation unit 86 sets the file name of the bridge essence file as the playback target for the essence data for which the bridge essence was created in step S25 among the clip data to be played back in the playlist. Rewrite the playlist as specified. Then, the playlist creation unit 86 ends the process.

 On the other hand, in step S24, if the playback device determines that the real-time playback can be performed in accordance with the edit point of the edit list because the seek time is short, the playlist creation unit 86 sets the Proceeding to S29, the playlist creating section 86 designates, based on the edit list, the file name of the clip data file to be played back in the playlist recognized in step S22 as a playback target. Create a playlist (playlist file 1 7 3) to be specified, and end the process.

In steps S27 and S29 described above, the playlist creation unit 86 rewrites the edit list so that the file name of the clip data to be played back in the playlist is designated as the playback target, and the playlist is created. Therefore, when playing back clip data on a playback device, there is no need to read the clip information file 15 1 and recognize the file of the clip data to be played back in the playlist, and refer to the playlist. Instantly play the clip target that is to be played back in the playlist. Can be. Therefore, the playback device does not require much processing until playback of the clip data, and can reduce the time required for playback. Further, in the above-described steps S24 and S25, the playlist creation unit 86 determines whether or not playback can be performed in real time, and if it is determined that playback cannot be performed in real time, the bridge essence creation unit 87 determines the clip data in the range where the edit point is set. During the evening, copy the clip clip in the range where real-time playback is not possible to another location on the optical disc 67, rearrange it so that it is physically continuous, and create a bridge essence. Real-time playback is guaranteed by playing back the bridge essence instead of clip data in a range where continuous playback is not possible.

 Note that the playlist creation unit 86 can also skip the processing in step S29. That is, if the play list creation unit 86 determines that the playback device can perform real-time playback according to the edit points of the edit list, the play list creation unit 86 does not create a playlist, and the playback device sets the play list in accordance with the edit list. It is also possible to play the clip clip overnight.

 FIG. 9 and FIG. 10 are diagrams showing examples of the playlist described in the playlist file 173. FIG. FIG. 10 is a view following FIG.

 FIGS. 9 and 10 show examples of codes in the range specified by the start tag or body> tag and the end tag or body> tag in the playlist. I have.

The contents of the playlist are described between the <par> tag on the second line and the <par> tag on the 40th line. The <switch> tag on the third line specifies the type of codec (CODEC (COmpresser DECompressor)). From the <swi tch> tag on the third line, the / swi t ch> can be specified.

 The fourth line! ---- Main Stream--> is a comment sentence that represents the essence data. On the fifth line, par systemCo immediately @ HL"> indicates that the type of codec to be specified is "" @HL "indicates that it is a codec. In other words, MP @ HL (main profile high level) for HD (High Definition) image data with a bit rate of 25 Mbps and 1440 pixels in the horizontal direction of the image encoded by MPEG2 The codec corresponding to the decoder is specified.

 In addition, in "" MPEG2HD25_1440_MP @ HL "", the number of pixels in the vertical direction of the image is omitted to shorten the description.

 Also, the sixth line! One VIDEO—> is a comment sentence indicating that image data is described in the seventh to 38th lines below.

 The “ku!-Clip->” on the seventh line is a comment that indicates that the code related to clip # 1 is described in the eighth to first and second lines below.

 MXF on the 8th line, "ku video src =" / PROAV / CLPR / OOOl / COOOlVOl. MXF "J indicates that the file name of the data file of clip # 1 to be played is" C0001V01 " . That is, the data of clip # 1 is the data of the image data file 152 (FIG. 4).

smpte- 30=00:00:00:00" J と第 1 0行目 の 「clipEnd=" smpte- 30=00:05:00:00" 」 は、 ある時刻を基準として 、 クリップ # 1の I N点が 「TO00:00:00:00」 であることを表わし、 「clipEnd=" s即 te- 30=00:05:00:00" J は、 クリップ # 1の OUT点 が 「TO00:05:00:00」 に設定されていることを表わしている。 即ち、 クリップ # 1の再生時間は 5分である。 Line 9

smpte- 30 = 00: 00: 00: 00 "J and" clipEnd = "smpte-30 = 00: 05: 00: 00""on the 10th line are the IN of clip # 1 based on a certain time. Indicates that the point is "TO00: 00: 00: 00", "ClipEnd =" s immediately te-30 = 00: 05: 00: 00 "J indicates that the OUT point of clip # 1 is set to" TO00: 05: 00: 00 ". That is, the playback time of clip # 1 is 5 minutes.

： 9 " 」 は、 クリップ # 1のデータの種類が 「MPEG2HD25_1440_MP@HL」 で あり、 画像データの縦横比 （アスペクト比） が 「1 6 ： 9」 であるこ とを表わしている。 また、 第 1 2行目の 「header=" 65536" 」 は、 画 像データファイル 1 52の MXF (Media Exchange Format) ファイルの ヘッダサイズが 65536byteであることを表わしている。 1st line 1

: 9 “” indicates that the data type of clip # 1 is “MPEG2HD25_1440_MP @ HL” and the aspect ratio of the image data is “16: 9”. Also, “header = 65536” on the first and second lines indicates that the header size of the MXF (Media Exchange Format) file of the image data file 152 is 65536 bytes.

 “K! I Bridge Essence-->” on line 13 is a comment that indicates that the code related to the bridge essence is described in lines 14 to 29 below.

 On the 14th line, "ku video src =" B0002V01. BMX "J and" begin = "smpt e-30 = 00: 05: 00: 00" This indicates that the file name of the bridge essence to be played is “B0002V01”. That is, the data of the bridge essence is the data of the bridge essence image data file 175. Also, “begin = smpte_30 = 00: 05: 00: 00” means that the start position of the edited bridge essence is set to “TC = 00: 05: 00: 00” based on a certain time. It means that there is. That is, the start position of the bridge essence is 5 minutes from the start position “TC = 00: 00: 00: 00” of clip # 1 to the end of reproduction of clip # 1.

Here, assuming that bridge essence 175 to be reproduced is now a bridge essence # 1 as a bridge essence to be reproduced for the first time, "clipBegin =" smpte-30 = 00: 00:00:00 "" means that the IN point of Bridge Essence # 1 is "TC = 0" based on a certain time. 0: 00: 00: 00 ”, and“ clipEnd = "smpte−30 = 00: 00: 00: 12” ”on the 16th line indicates that the OUT point of bridge essence # 1 is“ TC = 0 0: 00: 00: 12 ". That is, the playback time of Bridge Essence # 1 is 12 frames.

 On the 17th line, "type =" MPEG2HD25_1440_MP @ HL "aspectRatio = 16: 9" /> "indicates that the type of bridge essence # 1 is" MPEG2HD25-14440_MP @ HL " This indicates that the aspect ratio is “16: 9”.

 Of the "ku video src-" B0002V01. BMX "" and "begin =" smpt e_30 = 00: 05: 00: 12 "on the 18th line," ku video src = "B0002V01. BMX" "is played Indicates that the file name of the target Bridge Essence # 2 is "B0002V01". That is, the data of the bridge essence # 2 is the data of the bridge essence image data file 175. "Begin =" smpte-30 = 00: 05: 00: 12 "means that the starting position of the edited bridge essence # 2 is" TC = 00: 05: 00: 12 "based on a certain time. Indicates that it has been set. That is, the start position of the bridge essence # 2 is the start position of the previous bridge essence # 1 to be played from "TC = 00: 05: 00: OOJ". It is at the time of two frames.

 In the 19th line, “clipBegin =" smpte-30 = 00: 00: 00: 17 ”” indicates that the IN point of Bridge Essence # 2 is “TC = 00: 00: 00: 17” based on a certain time. In the 20th line, "clipEnd =" s immediately te-30 = 00: 00: 00: 27 "" indicates that the OUT point of bridge essence # 2 is "TC = 00: 00: 00". : 27 ”is set. That is, the playback time of Bridge Essence # 2 is 10 frames.

2 decBegin = "smpte-30 = 00: 00: 00: 15" preDecDur = "on the 2nd first line "" And "decEnd =" smpte-30 = 00: 00: 00: 28 "postDecDur =" 1 "" on the second line indicate that the input start position to the decoder is "TO00 : 00: 00: 15 ”, indicating that the decoder input end position is“ ΤΟ00: 00: 00: 28 ”. Also, the period (number of frames) required for input to the decoder between point I I and the input start position to the decoder is “1”, and the input to the decoder between the OUT point and the decoder input end position is “1”. Indicates that the required period (the number of frames) is “1”. In other words, in the MPEG encoding method, it may be necessary to decode from the picture preceding the IN point in the display order, and specify the decoding start position with decBegin. Specify the number of frames with preDecDur. In addition, in the MPEG encoding method, it may be necessary to decode the picture up to the picture after the OUT point, and the decoding end position is specified by decEnd, and the frame that is not displayed but needs to be decoded is specified. Specify the number with postDecDur.

 "DecBegin" can be omitted when it is the same as "clipBegin", and "decEnd" can be omitted when it is the same as "clipEnd". For example, since "decBegin" and "decEnd" are not described in the 8th to 12th lines where the code related to clip # 1 is described, "decBegin" is the same as "clipBegin". "TC = 00: 00: 00: 00] and" decEnd "is the same" TC = 00: 05: 00: 00 "as" clipEnd ".

/>J は、 再生対象のブリッジエッセンス # 3の データの種類が rMPEGZHD JA JO^HU であり、 画像データのァス ぺクト比が 「1 6 ： 9」 であることを表わしている。 Line 2 "type =" MPEG2HD25_1440_MP @ HL "" and line 24

/> J indicates that the data type of the bridge essence # 3 to be reproduced is rMPEGZHD JA JO ^ HU, and the aspect ratio of the image data is “16: 9”.

In the second and fifth lines, "ku video src =" B0002V01. BMX "J and" begin = "smpt In e-30-00: 05: 00: 22j, “ku video src =" B0002V01.BMX "” indicates that the file name of bridge essence # 3 to be played is “B0002V01”. That is, the bridge essence data is the data of the bridge essence image data file 175. Also, "begin =" smpte-30 = 00: 05: 00: 22 "means that the starting position of the edited bridge essence is set to" TO00: 05: 00: 22 "based on a certain time. Represents. In other words, the start position of the bridge essence # 3 starts from the start position "TC = 00: 05: 00: 12" of the previous bridge essence # 2 to be played, and the last bridge essence # 2 to be played ends. 10 frames.

 On the 26th line, "clipBegin =" s immediately te-30 = 00: 00: 01: 03 "" indicates that the IN point of Bridge Essence # 3 is "TC = 00: 00: 01" based on a certain time. : 03 ”, and“ clipEnd = "s immediately te-30 = 00: 00: 00: 01: 14” ”on the 27th line indicates that the OUT point of bridge essence # 3 is“ TC = 00: 00 : 00: 14J, which means that the playback time of Bridge Essence # 3 is 11 frames.

 On line 28, "type =" MPEG2HD25_1440_MP @ HL "" and on line 2 raspectRatio-16: 9 "are the data of bridge essence # 3 to be played. HL ”, indicating that the aspect ratio of the image data is“ 16: 9 ”.

 The "header =" 500000 "/>" on the 29th line indicates that the offset to the frame to be reproduced is 500000 bytes.

 “Ku!-Clip3—>” on the 30th line is a comment statement indicating that the code related to clip # 3 is described in the 3rd to 3rd lines below it. .

Line 3 “ku video src =" / PROAV / CLPR / 0O05 / C0005V01. MXF "J Indicates that the file name of the data file of clip # 3 to be played is “C0005V01”. The third line "begin =" sm pte-30 = 00: 05: 01: 03j is the start position of the edited clip # 3 is "TO00: 05: 01: 03" based on a certain time. Indicates that it has been set. In other words, the start position of clip # 3 starts from the previous start position of bridge essence # 3 to be played back, "ΤΟ00: 05: 00: 22", and the playback of bridge essence # 3 to be played back ends. One frame later.

 In the third line, "clipBegin =" smpte-30-00: 10:00:15 "" indicates that the IN point of clip # 3 is "TC = 00: 10: 00: 15J, based on a certain time. "ClipEnd =" smpte-30 = 00: 15: 10: 00 "" on the third and fourth lines indicates that the OUT point of clip # 3 is "TC: 00: 15: 10: 00" This means that

"DecBegin =" smpte-30 = 00: 10: 00: 12 "preDecDur =" Γ "on the third line and" decEnd = "smpte-30 = 00: 15: 10: 00" on the third line "postDecDur =" 0 "" means that the input start position to the decoder is "TC = 00: 10: 00: 12" and the decoder input end position is "TC = 00: 15: 10: The period (number of frames) required for input to the decoder between the IN point and the input start position for the decoder is “2J, and the OUT point and the end of decoder input. This indicates that the period (number of frames) required for input to the decoder between positions is “0”. The "type =" MPEG2HD25_1440_MP @ HL "J on the 37th line indicates that the type of clip # 3 is" MPEG2HD25-U40_MP @ HL ". In “aspectRatio = 16: 9” header 1000000 ”/>” on line 38, “aspectRatio = 16: 9” indicates that the aspect ratio of the image data is “16: 9”, "Header =" 1000000 "/>" This indicates that the size of the header of the MXF file # 3 is l OOOOOOObyte.

 FIG. 11 is a diagram showing a configuration example of a reproducing device 201 for reproducing the optical disk 67. As shown in FIG.

 The reproduction control unit 211 includes a read unit 222 and a decode control unit 222.

 The playback control unit 211 transmits the clip data such as the image data file 152 and the audio data file 153 recorded on the optical disk 67 mounted on the drive 211 to the optical disk 6 together with the clip data. Plays back based on the playlist file 1 7 3 recorded in 7.

 The reading unit 221 is composed of a picture pointer reading unit 231 and a playlist reading unit 232. The playlist reading unit 2 32 reads a playlist from the playlist file 1 73 recorded on the optical disc 67 mounted on the drive 2 1 2 via the disc IZF 2 41, and reads it as a picture. The data is supplied to the pointer reading unit 2 3 1.

The picture bin reading unit 2 31 stores the picture points of the essence data (clip data and bridge essence) to be reproduced in the playlist supplied from the playlist reading unit 23 2 into the drive 2 1. Read from the optical disk 67 loaded in 2 via the disk I / F. That is, the picture pointer readout unit 231, from the picture pointer file 164 and the playlist picture pointer file 174, respectively corresponds to the picture pointer and the bridge essence corresponding to the clip data to be reproduced. Read the picture pointer. The picture pointer reading unit 231 supplies the read picture points to the decoder control unit 222 together with the playlist supplied from the playlist reading unit 232.

 The decoding control unit 222, based on the type of decoding (the type of codec) described in the playlist, outputs from the decoders 261-1-1 to 261-N of the decoding unit 21 Select the decoder to be used for playback. Further, the decode control unit 222 controls the selected decoder based on the picture pointer and the playlist, and reproduces the essence data to be reproduced on the optical disk 67.

 The drive 2 1 2 includes a disk I / F 2 4 1. When the optical disk 67 is mounted on the drive 21, the disk I / F 241 reads the picture pointer and the playlist from the optical disk 67, and reads the picture pointer and the playlist respectively. It is supplied to the reading section 2 32. Also, the disk IZF 241 reads other data and supplies it to the decoders 261-1-1,...,.

 The decoder unit 2 13 is composed of decoders 261-1-1,..., And decoders 2611N. In the following, when it is not necessary to individually distinguish each of the decoders 261-1 to 261-N, it is collectively referred to as a decoder 261.

 The decoder 261 is controlled by the decode control unit 222, and reproduces the essence data to be reproduced recorded on the optical disk 67.

FIG. 12 is a flowchart for explaining the reproducing process of the reproducing apparatus 201 in FIG. In this playback process, the optical disk 67 is loaded into the drive 212 by the user, and the optical disk Start when instructed to play 7.

 In step S41, the playlist reading unit 232 reads the playlist from the playlist file 173 recorded on the optical disk 67, and interprets the playlist.

 For example, if the playlist is as shown in FIG. 9 and FIG. 10, the playlist reading unit 2 32 is specified from “ku par systemComponent ^“ MPEG2HD25_1440_MP @ HL ”>” on the fifth line. It interprets that the type of the codec of the decoded decoder is a codec corresponding to "" MPEG2HD25_1440_MP @ HL "", and reads "ku video src =" PROAV / CLPR / 0001 / COO OlVOl .MXF "”, the file name of the essence data to be played back specified in the playlist is interpreted as “C0001V01”. Also, the playlist reading unit 2 32 2 reads “clipBegin = "smpte- 30 = 00: 00: 00: 00" From J and "clipEnd =" s immediately te-30 = 0 0: 05: 00: 00 "on the 10th line, the essence de It is interpreted that the IN point is “TC = 00: 00: 00: 00: 00” and the OUT point is “TC = 00: 05: 00: 00”.

 Furthermore, since the “decBegin” and “decEndj” are not described in the playlist reading unit 2 32, the “decBegin”, that is, the start position to the decoder is the same as the IN point “TO00: 00: 00: 00 And interprets that “decEncU”, that is, the decoder end position is “TO00: 05: 00: 00” which is the same as the OUT point.

 Then, the playlist reading section 2 32 supplies the interpreted playlist to the picture pointer reading section 2 31, and proceeds from step S 41 to step S 42.

In step S42, the picture-boin reading unit 2 3 1 The picture list of the essence data to be reproduced by the playlist is read.

 For example, if the file name of the essence data to be reproduced by the playlist is “C0001V01”, the picture pointer file 16 describing the picture pointer of the image data file 15 2 with the file name “C0001V01” 16 Read the picture pointer from 4. Then, the picture pointer readout unit 231 supplies the read-out picture pointer to the decode control unit 222 together with the playlist supplied from the playlist readout unit 232 in step S41. Proceed from step 2 to step S43.

 In step S43, the decoding control unit 222 recognizes the codec type of the specified decoder from the playlist capa supplied from the picture-bin reading unit 231, and selects the decoder 261. I do. For example, when the type of the codec of the decoder specified in the playlist is a codec corresponding to "" MPEG2HD25_1440_MP @ HL "", the decoder 261 having the codec is transmitted to the essence decoder to be reproduced. Select as Decoder 2 6 1 to decode.

 After the processing in step S43, the process proceeds to step S44, where the decoder control unit 222 controls the decoder 261, and performs reproduction.

Specifically, based on the picture pointer and the playlist supplied from the picture pointer reading unit 231, in step S42, the decoder control unit 222 determines the decoding start position and the decoding start position of the essence data to be reproduced. Set the end position and control the decoder 26 1. The decoder 261, from the optical disc 67, is designated as a playback target in the playlist based on the decoder start position and the decoder end position set by the decoder control unit 222. Read and decode data (playback). Then, the decoder control unit 222 ends the processing.

 In the above-described playback processing, the file name of the essence data is specified as a playback target in the playlist. Therefore, the decoder 261 plays the essence data based on the playlist so that the essence data is immediately Can be played. Therefore, much processing is not required until the reproduction of the essence de night, and the time required for the reproduction can be reduced.

 Note that the playback device 201 repeats the process of playing back the clip data to be played back based on the playlist until the user gives an instruction to stop playback. For example, if the playback process is performed based on the playlists in Fig. 9 and Fig. 10, after clip # 1 is played, bridge essence # 1, bridge essence # 2, bridge essence

# 3 and clip # 3 are played in this order.

 FIG. 13 is a diagram showing the concept of an edit list and a playlist.

 In FIG. 13, a clip information file 3 21-1 is a management file for managing the image data file 3 2 3-1 and the audio data file 3 2 4-1. The clip information file 3 2 1 _ 2 is a management file for managing the image data file 3 2 3-2 and the audio data file 3 2 4-2.

When the IN point and OUT point are set to the image data file 3 2 3—1 and the image data file 3 2 3—2 in the edit list 301, manage the image data file 3 2 3—1 A clip information file 3 2 1—1 that is a management file and a clip information file that is a management file that manages the image data file 3 2 3—2 The movie file 3 2 1—2 is to be played.

 Therefore, when clip data is reproduced based on the edit list 301, first, the clip information file 321-1 and the clip information file 321-2-2 are reproduced. The image data file 323-1 and the image data file 322-2 are reproduced with reference to the clip information file 3221-1 and the clip information file 321-2.

 Also, if the playlist 302 is created based on the edit list 301, the playlist 302 will directly link the image data file 3 2 3—1 and the image data file 3 2 3-2 that you want to play back. It is specified as a playback target.

 Accordingly, when clip data is reproduced based on the playlist 302, the image data file 323-1 and the image data file 322-2 are directly reproduced.

 Here, if the bridge essence file 331 has been created to guarantee real-time playback, the playlist 302 specifies the bridge essence file 331 as a playback target.

 In the playlist 302, since the image data file 3 2 3—1 and the image data file 3 2 3—2 are designated as the direct playback targets, the playback device directly outputs the image data file 3 2 3— 1 and image files 3 2 3—2 can be played immediately. Therefore, it is possible to shorten the time required for the reproduction without requiring much processing until the reproduction of the image data file 323-1 and the image data file 323-1-2.

The editing terminal device 66 and the playback device 201 described above are respectively Although the configuration has been described as being configured separately, the present invention is not limited to this, and a part or all of the functions of each device may be integrated with each other.

 Further, in the above description, the edit list is created by the editing terminal device 66, but the edit list created by the other editing terminal device is stored in a net such as an in-net. It may be obtained by receiving via a link.

 Further, in this specification, the processes described in the flowcharts may be performed in chronological order according to the order described as steps, but may not be performed in chronological order, but may be performed in parallel or individually. This includes the processing to be executed.

 As described above, according to the present invention, data can be reproduced. In particular, the time required for data reproduction is shortened, which makes it possible to reproduce data in real time.

Claims

The scope of the claims  1. An information creating device for creating information to be provided to a playback device that plays back predetermined data,  Playback control information acquisition means for acquiring first playback control information specifying a management file for managing the data as a playback target,  Creating means for creating, based on the first playback control information acquired by the playback control information acquiring means, second playback control information for designating a file composed of the data as a playback target;  An information creation device, comprising:  2. The first playback control information describes an editing point set for the data,  A determination unit configured to determine whether the data as an edit result based on the edit point can be reproduced in real time; and the determination unit determines that the playback device is the edit result. And a rearrangement means for rearranging data in a predetermined range in which the editing point is set, when it is determined that the data cannot be reproduced in real time,  The creating means creates second playback control information for designating also a file composed of the data rearranged by the rearrangement means as a playback target.  2. The information creation device according to claim 1, wherein:  3. An information creating method of an information creating device for creating information provided to a playback device that plays back predetermined data,  A reproduction control information obtaining step of obtaining first reproduction control information for specifying a management file for managing the data as a reproduction target; The first reproduction obtained by the processing of the reproduction control information obtaining step. A step of creating second playback control information for designating a file composed of the data as a playback target based on the raw control information. 4. A program that causes a computer to perform information creation processing for creating information to be provided to a playback device that plays back predetermined data,  A reproduction control information obtaining step for obtaining first reproduction control information for specifying a management file for managing the data as a reproduction target;  A creating step of creating second playback control information for designating a file composed of the data as a playback target based on the first playback control information acquired by the process of the playback control information acquisition step; A program comprising: and