JP2010015261A - Metadata recording device and metadata recording method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a metadata recording device for, in adding new metadata information by referring to existing metadata information, easily correcting metadata according to existing metadata in the neighborhood of the addition position. <P>SOLUTION: The metadata recording device includes: a control part 2 for accepting input information including information configuring new metadata and the position information of a prescribed position where the new metadata in video data are added; a reading part 3 for retrieving old metadata existing in a prescribed range in the neighborhood of the prescribed position with respect to the video data to which the old metadata stored in a data storage part are added, and for reading the detected old metadata; a new metadata generation part 4 for generating new metadata; a recorded metadata generation part 5 for comparing the old metadata with the new metadata, and for generating the recorded metadata by editing the old metadata according to the comparison result; and a recording part 6 for recording the recorded metadata at the prescribed position of the video data in the data storage part 1. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an editing apparatus for AV content shot by a broadcast / business camera recorder or the like, specifically, an apparatus for adding additional information (metadata) to the AV content.

  2. Description of the Related Art A recording / reproducing apparatus configured to be able to add metadata (INDEX information) for making a video frame searchable to a predetermined video frame of AV content data shot by a video camera or the like is known. In this recording / reproducing apparatus, when adding metadata to a position where metadata has already been added, the newly added metadata is simply overwritten on the already added metadata.

In addition, a recording / reproducing apparatus in which metadata for managing a predetermined range of AV content data is added to the AV content data (see, for example, Patent Document 1) has been proposed. When the AV content data in a predetermined range is overwritten, this recording / playback apparatus edits the start position or end position of the AV content data targeted by the metadata. With this configuration, the operator does not have to edit metadata by overwriting AV content data.
JP 2007-6167 A

  However, in a recording / playback apparatus configured to be able to add metadata information to the video frame, when adding new metadata information with reference to existing metadata information, the operator must It is necessary to check the contents of the data information and edit new metadata information accordingly, and it takes time to edit the metadata.

  Also in the recording / playback apparatus that edits metadata in response to overwriting of AV content data described in Patent Document 1, when adding new metadata information with reference to existing metadata information, the operator Needs to check the contents of the neighboring metadata information and edit the new metadata information.

  In order to solve the above conventional problem, the present invention refers to existing metadata in the vicinity of a position to be added when new metadata information is edited and added to a video frame with reference to the existing metadata information. Accordingly, an object of the present invention is to provide a metadata recording apparatus that can easily edit metadata.

  In order to solve the above-mentioned problem, the first metadata recording apparatus of the present invention includes input information including information constituting new metadata from outside and position information of a predetermined position to which the new metadata in video data is added. And the control unit that receives the old metadata stored in the data storage unit is searched for the old metadata existing in a predetermined range in the vicinity of the predetermined position and detected. The reading unit that retrieves the old metadata, the new metadata generation unit that generates the new metadata based on information configuring the new metadata, the old metadata and the new metadata are compared, and A recording metadata generation unit that generates recording metadata by editing old metadata according to the comparison result, and the predetermined position of the video data in the data storage unit Characterized by comprising a recording section for recording the recording metadata.

  In order to solve the above-mentioned problem, the second metadata recording apparatus of the present invention includes information constituting the new metadata from the outside and position information of a predetermined position to which the new metadata in the video data is added. A controller that receives input information; and video data to which the old metadata stored in the data storage unit is added is detected whether the old metadata exists at the predetermined position, and the old metadata is detected. If data exists, a reading unit for extracting the old metadata, a new metadata generating unit for generating new metadata based on information constituting the new metadata, the old metadata, and the new metadata, A recording metadata generation unit that generates recording metadata by editing the old metadata according to the comparison result, and the old metadata in the data storage unit Characterized by comprising a recording section for recording the recording metadata location.

  In order to solve the above-described problem, the first metadata recording method of the present invention includes a control unit that receives input information from the outside, and old metadata added to video data stored in the data storage unit. A new metadata generation unit that generates new metadata based on the input information, a recording metadata generation unit that generates recording metadata from the old metadata and the new metadata, A metadata recording method of a metadata recording apparatus comprising a recording unit that records the recording metadata on the video data in a data storage unit, wherein the control unit configures the new metadata from outside Receiving the input information including position information of a predetermined position to which the new metadata in the video data is added, and the reading unit includes the predetermined position Based on the position information, searching the old metadata existing in a predetermined range near the predetermined position with respect to the video data and retrieving the detected old metadata; and the new metadata generating unit, The step of generating the new metadata based on information constituting the new metadata, and the recording metadata generation unit compares the old metadata with the new metadata, and for the old metadata Editing according to a comparison result to generate the recording metadata, and the recording unit recording the recording metadata in association with the predetermined position of the video data in the data storage unit. It is characterized by that.

  In addition, in order to solve the above-described problem, the second metadata recording method of the present invention includes a control unit that accepts input information from the outside, and old metadata added to video data stored in the data storage unit. A new metadata generation unit that generates new metadata based on the input information, a recording metadata generation unit that generates recording metadata from the old metadata and the new metadata, A metadata recording method of a metadata recording apparatus comprising a recording unit that records the recording metadata on the video data in a data storage unit, wherein the control unit configures the new metadata from outside Receiving the input information including position information of a predetermined position to which the new metadata in the video data is added, and the reading unit includes the predetermined position Detecting whether or not the old metadata exists at the predetermined position with respect to the video data based on the position information, and extracting the detected old metadata; and the new metadata generating unit, The step of generating new metadata based on information constituting the new metadata, and the recording metadata generation unit compares the old metadata with the new metadata, and the comparison result with respect to the old metadata And generating the recorded metadata, and the recording unit records the recorded metadata at the old metadata position in the data storage unit.

  According to the present invention, when new metadata information is edited and added to a video frame by referring to existing metadata information, the metadata can be easily set according to the existing metadata in the vicinity of the added position. Therefore, editing efficiency of metadata can be improved.

  The metadata recording apparatus and metadata recording method of the present invention can take the following various forms based on the above-described configuration.

  That is, in the first metadata recording apparatus configured as described above, the recording metadata generation unit compares the old metadata with the new metadata, edits the old metadata information, and the recording unit includes: The old metadata can be rewritten with the edited old metadata.

  Further, when a plurality of the old metadata is added in the vicinity of the predetermined position, the recording metadata generation unit compares the plurality of old metadata with the new metadata, and the old metadata The recording metadata can be generated by performing editing according to the comparison result.

  In the first metadata recording method, the recording metadata generation unit edits the old metadata information after comparing the old metadata with the new metadata, and the recording unit. May comprise rewriting the old metadata with the edited old metadata.

  The recording metadata generation unit compares the plurality of old metadata with the new metadata when a plurality of the old metadata is added in the vicinity of the predetermined position, and the old metadata The method may further include a step of editing according to the comparison result to generate the recording metadata.

(Embodiment 1)
The metadata recording apparatus according to Embodiment 1 of the present invention is an apparatus that supports editing work on AV content shot by a broadcast / business camera recorder or the like. For example, in sports broadcasting, it is useful when editing work is urgently performed such as playing a highlight scene after the game is finished (or a free time during the game). In the following description, metadata added to a video frame in the metadata recording apparatus according to the present invention is referred to as INDEX information.

  For example, when relaying a baseball game, it is assumed that after a game is ended (or a free time during the game), a highlight scene in which only home run scenes are collected is played. In order to facilitate editing, when a player hits a home run during a baseball game relay (recorded with a camera), INDEX information is added to the content in real time. As a matter of course, since INDEX information cannot be added in real time before hitting a home run, INDEX information is added to a video frame position after hitting the home run.

  In the process of creating a highlight scene, the operator detects the video frame position in the vicinity of the home run scene based on the existing INDEX information, confirms the video in the vicinity of the detected frame, and the video immediately before hitting the home run. New INDEX information is added to the frame. At this time, in the present embodiment, the existing INDEX information (old INDEX information) is modified based on the new INDEX information (new INDEX information) to be added to create a recording INDEX. By adding the created recording INDEX information to a predetermined video frame, it is possible to easily replace the INDEX information. Further, the old INDEX information is corrected.

  As described above, when adding metadata, the added metadata is compared with the existing metadata located in the vicinity of the added metadata, and the existing metadata is added according to the comparison result. Therefore, metadata can be easily corrected. For this reason, by performing re-editing processing, it is possible to easily add appropriate INDEX information to a video frame that is desired to be used for cueing video data by highlighting or the like.

  Hereinafter, the metadata recording apparatus according to the present embodiment will be described in detail. FIG. 1 is a block diagram showing the configuration of the metadata recording apparatus according to this embodiment. The data storage unit 1 is composed of a magnetic disk, a hard disk, or a semiconductor memory, and may be formed so as to be removable from the metadata recording device. The data storage unit 1 is not an essential component of the metadata recording device.

  The data storage unit 1 is attached to a photographing device (not shown), and stores AV content composed of a number of frames. FIG. 2 is a diagram showing a configuration of AV content. This AV content has a configuration in which a frame 11 and INDEX information 12 are continuously arranged. A frame 11 is video information of one frame of video data. The INDEX information 12 is metadata added to the frame 11.

  Specific information included in the INDEX information 12 includes information such as Type, Person, Date, Place, and Data. Type is information indicating a target to which INDEX information 12 is added, such as a home run or strikeout. Person is information indicating the name of a person to whom the INDEX information 12 is added, such as a cameraman or an editor. Date is information indicating the date on which the INDEX information 12 was edited and added. “Place” is information indicating a place where the INDEX information 12 is added, such as a baseball field name and an editing facility name. Data is information indicating items to be specially noted.

  In FIG. 1, the control unit 2 is configured to be able to input an instruction from an operator so as to add INDEX information to a predetermined frame of AV content. The control unit 2 supplies position information of a predetermined frame to which the INDEX information is added to the reading unit 3 based on an instruction from the operator. Further, the control unit 2 supplies information for generating INDEX information to the new INDEX generation unit 4.

  The reading unit 3 retrieves old INDEX information existing in the vicinity of a predetermined frame of AV content from the data storage unit 1 and supplies the detected old INDEX information to the recording INDEX generation unit 5. The range in the vicinity of the predetermined frame searched by the reading unit 3 may be fixed on the device side by a predetermined number of frames or specified by the control unit 2. When there are two or more old INDEX information in the vicinity of a predetermined frame, the old INDEX information recorded at the closest position is detected.

  The new INDEX generation unit 4 generates new INDEX information based on the instruction input from the control unit 2. The recording INDEX generation unit 5 compares the old INDEX information from the reading unit 3 with the new INDEX information generated by the new INDEX generation unit 4, and performs predetermined editing on the old INDEX information based on the comparison result. Record INDEX information is generated. As processing for editing the INDEX information, for example, there are overwrite, merge, and new addition. Details of processing executed by the recording INDEX generation unit 5 will be described later.

  The recording unit 6 records the recording INDEX information supplied from the recording INDEX generation unit 5 at a position continuous with the predetermined frame 11 of the AV content stored in the data storage unit 1. Alternatively, the recording unit 6 may overwrite the recorded INDEX information at the position where the old INDEX information is stored. Alternatively, the recording unit 6 may record the recording INDEX information in the middle between the position where the old INDEX information is stored and the position continuous with the predetermined frame 11. Further, the recording unit 6 may delete old INDEX information that is no longer necessary when recording the recorded INDEX information.

  FIG. 3 is a diagram illustrating processing executed by the recording INDEX generation unit 5. In the recording INDEX generation unit 5, any of the three processes of overwriting, merging, and newly adding is performed on the old INDEX information. FIG. 3 shows a state in which the new INDEX information 23 is added to the INDEX information of the neighboring frame of the old INDEX information 22 of the AV content 21. The recording INDEXs 24 to 26 are INDEX information generated by processing (overwriting, merging, newly adding) the old INDEX information by the recording INDEX generation unit 5.

  In the old INDEX information 22, for example, “Type1” as Type, “Taro Yamada” as Person, “2001.01.01” as Date, “AAA Studio” as Place, and “Data1” as Data are recorded. In the new INDEX information 23, “Type 1” is recorded as Type, “Taro Yamada” as Person, “2001.02.15” as Date, “BBB Studio” as Place, and “Data 2” as Data.

  The overwriting in the processing of the recording INDEX generation unit 5 is to generate the recording INDEX information 24 in which the contents of the old INDEX information are completely replaced with the contents of the new INDEX information. That is, the content of the old INDEX information is finally completely erased.

  Merging is to compare the old INDEX information and the new INDEX information, maintain the common contents as they are, and generate recorded INDEX information in which these pieces of information are written together for different information. Specifically, for example, when the Date of the old INDEX information 22 and the Date of the new INDEX information 23 are different, the recorded INDEX generation unit 5 sets the Date of the old INDEX information 22 to the Date of the recorded INDEX information 25 after merging. (2001.01.01) and Date (2001.02.15) of the new INDEX information 23 are described.

  Similarly, when the place of the old INDEX information 22 and the place of the new INDEX information 23 are different, the recording INDEX generation unit 5 adds the place (AAA Studio Studio) of the old INDEX information 22 to the place of the recording INDEX information 25 after merging. ) And Place (BBB Studio) of the new INDEX information 23 are described.

  Similarly, when the data of the old INDEX information 22 and the data of the new INDEX information 23 are different, the recording INDEX generation unit 5 adds the Data (Data1) of the old INDEX information 22 to the Data of the recording INDEX information 25 after merging. And Data (Data 2) of the new INDEX information 23 are described.

  The new addition in the processing of the recording INDEX generation unit 5 is to generate the recording INDEX information 26 based on the new INDEX information separately from the old INDEX information.

  Next, the operation of the metadata recording apparatus according to this embodiment will be described. FIG. 4 is a flowchart showing the operation of the metadata recording apparatus according to this embodiment. First, the operator inputs a command to add new INDEX information to the control unit 2 (step S101). The control unit 2 supplies the position information of the video frame to which the new INDEX information is added to the reading unit 3. Based on the position information of the video frame, the reading unit 3 searches the data storage unit 1 for INDEX information near the position of the predetermined video frame (step S102). Next, the reading unit 3 takes out the detected old INDEX information (step S103). Next, the reading unit 3 supplies the extracted INDEX information to the recording INDEX generation unit 5.

  Further, the control unit 2 inputs information forming the new INDEX information to the new INDEX generation unit 4. The new INDEX generation unit 4 generates new INDEX information based on information from the control unit 2 (step S104). The new INDEX generation unit 4 inputs the new INDEX information to the recording INDEX generation unit 5.

  Next, the recording INDEX generation unit 5 compares the old INDEX information in the vicinity of the storage position of the video frame with the new INDEX information, and processes the old INDEX information according to the comparison result to generate the recording INDEX information ( Step S105). Specifically, the recording INDEX generation unit 5 compares, for example, the type of the new INDEX information and the type of the old INDEX information, and if they are the same, performs a merge as a process. On the other hand, when the type of the new INDEX information is different from the type of the old INDEX information, overwriting is performed as a process.

  The recording INDEX information generated by the recording INDEX generation unit 5 is input to the recording unit 6. The recording unit 6 records the recording INDEX information at a predetermined position of the AV content in the data storage unit 1 (step S106).

  As described above, when adding metadata, the metadata recording apparatus according to the present embodiment compares the added metadata with existing metadata located in the vicinity of the added metadata. Thus, since the metadata is edited according to the comparison result, the metadata can be easily corrected.

  In addition, although the specific control process of the recording INDEX production | generation part 5 was described, it is not limited to the method mentioned above, The means will not be ask | required if a predetermined process can be performed on specific conditions.

  In the present embodiment, the old metadata can also be modified and rewritten as recording metadata at the position of the old metadata.

  Further, specific information in the INDEX information is not limited to the above-described data (Type, Person, etc.), and arbitrary information may be stored in the INDEX information. Also, the INDEX information is not necessarily limited to the configuration recorded on the AV content, and may be stored in another file (for example, a management information file).

  In the present embodiment, the types of processing are exemplified as overwriting, merging, and new addition. However, the present invention is not limited to this, and any other processing may be performed.

  In addition, the range in the vicinity of the predetermined frame position to be inspected by the reading unit 3 can be set in the area before and after the predetermined frame in time, or can be set only in the previous area or only in the subsequent area. it can. For example, in the baseball strikeout scene, the old INDEX information is attached after confirming the strikeout. Therefore, when viewed from the new INDEX information, the target old INDEX information is later in time. In this case, the neighborhood region is set only to the subsequent region. This configuration can prevent the INDEX information of the previous strikeout scene from being edited.

  Further, the range near the predetermined frame position to be inspected by the reading unit 3 can be changed according to the content of the old INDEX information. For example, the configuration may be such that the neighborhood range is changed depending on whether the Type is a home run or a strikeout. The time from the strikeout scene (scene thrown by the pitcher) until the operator recognizes the strikeout and attaches INDEX information is shorter than in the home run scene. For this reason, when Type is strikeout, the neighborhood region can be made shorter than when Type is a home run. With this configuration, it is possible to prevent the INDEX information of the strikeout scene before the desired strikeout scene from being edited when adding the INDEX information when the strikeout is continuous.

  Also, the above processing is performed only when the neighborhood area is narrowed to the limit and new INDEX information is added at the same position as the old INDEX information is recorded. ). When the recording INDEX information and the old INDEX information are recorded at the same position, a new addition process executed by the recording INDEX generation unit adds the recording INDEX information and the old INDEX information independent of each other to the same video frame. INDEX information is generated.

  In the metadata recording apparatus according to the present embodiment, the processing to be performed is determined by comparing the types. However, for example, the processing may be determined by using Person and Data as the comparison targets.

(Embodiment 2)
FIG. 5 is a diagram showing processing executed by the recording INDEX generation unit of the metadata recording apparatus according to Embodiment 2 of the present invention. The configuration of the metadata recording apparatus in the present embodiment is the same as that of the metadata recording apparatus according to the first embodiment, and therefore will be described with reference to FIG. The metadata recording apparatus according to the present embodiment is different in operation from the metadata recording apparatus according to the first embodiment.

  The recording INDEX generation unit 5 compares the old INDEX information detected by the reading unit 3 with the new INDEX information output by the new INDEX generation unit 4, in the case of related INDEX information and in the case of INDEX information not related Different processing (for example, overwriting, merging, new addition) is performed. The related INDEX information includes not only exactly the same INDEX information but also different INDEX information, and in the baseball example, the type of INDEX information includes information related to a scoring scene such as a home run and a timely hit.

  As shown in FIG. 5, when the new INDEX information 33 is added, the recording INDEX generation unit 5 compares the first old INDEX information 32, the new INDEX information 33, and the second old INDEX information 34, and overwrites them. The merged and newly added processes are performed to generate recording INDEX information 35 to 37. Hereinafter, when the new INDEX information 33 is added to a predetermined position of the video frame of the AV content 31, the first old INDEX information 32, the second old INDEX information 34, and the position near the position of the frame to which the new INDEX information 33 is added. The operation of the metadata recording apparatus according to the present embodiment will be described by taking as an example the case where is added.

  The recorded INDEX generation unit 5 compares the Type (Type 1) of the first old INDEX information 32 with the Type (Type 1) of the new INDEX information 33, and if there is a relationship between the respective types, the first old INDEX information 32 The new INDEX information 33 is merged to generate the recorded INDEX information 36.

  In addition, when the type of the first old INDEX information 32 and the type of the new INDEX information 33 are not related, the recorded INDEX generation unit 5 determines the type of the second old INDEX information 34, the type of the new INDEX information 33, and If the respective types are related, the new INDEX information 33 is merged with the second old INDEX information 34 to generate the recorded INDEX information 36.

  Further, when all of the type of the first old INDEX information 32, the type of the second old INDEX information 34, and the type of the new INDEX information 33 are related, the first old INDEX information 32, the second old INDEX information 34, Then, the recorded INDEX information 36 is generated by merging the three INDEX information of the new INDEX information 33.

  Note that the video frame position to which the recording unit 6 adds the recording INDEX information may be a position where the first old INDEX information 32 is recorded, or a position where the second old INDEX information 34 is recorded. Or it is good also as a position which followed the predetermined frame where the new INDEX information 33 should be recorded. Alternatively, it may be an intermediate point between the video frame positions of the first old INDEX information 32, the second old INDEX information 34, and the new INDEX information 33 (or any frame position between the video frame positions).

  On the other hand, when the type of the first old INDEX information 32, the type of the second old INDEX information 34, and the type of the new INDEX information 33 are not all related, the recording INDEX generation unit 5 converts the new INDEX information 33 into the first old INDEX information 33. The recorded INDEX information 35 overwritten on the information 32 or the second old INDEX information 34 is generated. At this time, the recording INDEX generation unit 5 may generate the recording INDEX information 35 in which both the INDEX information of the first old INDEX information 32 and the second old INDEX information 34 are overwritten.

  When only the first old INDEX information 32 is added in the vicinity of the position of the frame to which the new INDEX information 33 is added, the recording INDEX generation unit 5 determines that the new INDEX information 33 and the first old INDEX information 32 are If it is related, the record INDEX information 36 in which the new INDEX information 33 is merged with the first old INDEX information 32 is generated. If the new INDEX information 33 and the first old INDEX information 32 are not related, the recording INDEX generation unit 5 generates recording INDEX information 35 in which the new INDEX information 33 is overwritten on the first old INDEX information 32.

  If there is no old INDEX information in the vicinity of the position of the frame to which the new INDEX information 33 is added, the recording INDEX information 37 with the new INDEX information 33 newly added is generated.

  As described above, when the old INDEX information is added near the position of the frame to which the new INDEX information is added, the metadata recording apparatus according to the present embodiment has a relationship between the new INDEX information and the old INDEX information. Thus, the recording INDEX generation unit 5 performs different processing. With this configuration, even when a plurality of old INDEX information is added near the position of the frame to which the new INDEX information is added, the INDEX information can be appropriately edited.

  As another control method, the recording INDEX generation unit 5 compares the Person of the first old INDEX information 32 with the Person of the new INDEX information 33, and if the respective Persons are related, the first old INDEX information. Recorded INDEX information 36 is generated by merging 32 and the new INDEX information 33. If each Person is not related, the recording INDEX generation unit 5 generates recording INDEX information 37 in which new INDEX information 33 is newly added.

  Further, the Person of the second old INDEX information 34 is compared with the Person of the new INDEX information 33, and if each Person is related, the recorded INDEX merged with the second old INDEX information 34 and the new INDEX information 33. Information 36 is generated. If each Person is not related, the recording INDEX generation unit 5 generates recording INDEX information 37 in which the second old INDEX information 34 and the new INDEX information 33 are newly added. When a new addition is performed, the first old INDEX information 32, the second old INDEX information 34, and the new INDEX information 33 are added to different video frame positions.

  In addition, Date and Place can be configured to perform various processes such as overwriting, merging, and new addition in the same manner as the control described above.

  In the first and second embodiments, the INDEX information may be added in units of GOP (Group Of Pictures) instead of a frame.

  The metadata recording apparatus of the present invention facilitates editing of metadata, and is used as an apparatus that supports editing work on AV content shot by a broadcast / business camera recorder.

1 is a block diagram showing a configuration of a metadata recording apparatus according to Embodiment 1 of the present invention. The figure which shows the composition of AV contents The figure which shows the process which the recording INDEX production | generation part of the metadata recording device which concerns on Embodiment 1 performs FIG. 3 is a flowchart showing the operation of the metadata recording apparatus according to the first embodiment. The figure which shows the process which the recording INDEX production | generation part of the metadata recording device which concerns on Embodiment 2 of this invention performs

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Data storage part 2 Control part 3 Reading part 4 New INDEX production | generation part 5 Recording INDEX production | generation part 6 Recording part 11 Frame data 12 INDEX information 21, 31 AV content 22 Old INDEX information 23, 33 New INDEX information 24-26, 35- 37 Recorded INDEX information 32 First old INDEX information 34 Second old INDEX information

Claims (8)

A control unit that receives input information including information that configures new metadata from outside and position information of a predetermined position to which the new metadata in video data is added;
For the video data to which the old metadata stored in the data storage unit is added, the old metadata existing in a predetermined range near the predetermined position is searched, and the detected old metadata is extracted. A reading section;
A new metadata generation unit that generates the new metadata based on information constituting the new metadata;
A recording metadata generation unit that compares the old metadata with the new metadata and performs editing according to a comparison result with respect to the old metadata to generate recording metadata;
A metadata recording apparatus comprising: a recording unit that records the recording metadata at the predetermined position of the video data in the data storage unit. The recorded metadata generation unit compares the old metadata with the new metadata, edits the old metadata information,
The metadata recording apparatus according to claim 1, wherein the recording unit rewrites the old metadata with the edited old metadata.   When a plurality of the old metadata is added in the vicinity of the predetermined position, the recording metadata generation unit compares the plurality of old metadata with the new metadata, and compares the old metadata with the old metadata. The metadata recording apparatus according to claim 1, wherein recording metadata is generated by performing editing according to the comparison result. A control unit that receives input information including information that configures new metadata from outside and position information of a predetermined position to which the new metadata in video data is added;
It is detected whether or not the old metadata exists at the predetermined position with respect to the video data to which the old metadata stored in the data storage unit is added. If the old metadata exists, the old metadata is detected. A reading section for retrieving metadata;
A new metadata generation unit for generating new metadata based on information constituting the new metadata;
A recording metadata generation unit that compares the old metadata with the new metadata and performs editing according to a comparison result with respect to the old metadata to generate recording metadata;
A metadata recording apparatus comprising: a recording unit that records the recording metadata at the old metadata position in the data storage unit. A control unit for receiving input information from the outside;
A reading unit for retrieving old metadata added to video data stored in the data storage unit;
A new metadata generation unit that generates new metadata based on the input information;
A recording metadata generation unit that generates recording metadata from the old metadata and the new metadata;
A metadata recording method of a metadata recording apparatus comprising: a recording unit that records the recording metadata on the video data in the data storage unit,
The control unit accepting the input information including information constituting the new metadata from outside and position information of a predetermined position to which the new metadata in the video data is added;
The reading unit retrieves the detected old metadata by searching for the old metadata existing in a predetermined range near the predetermined position with respect to the video data based on the position information of the predetermined position; ,
The new metadata generation unit generating the new metadata based on information constituting the new metadata;
The recording metadata generation unit comparing the old metadata and the new metadata, editing the old metadata according to a comparison result, and generating the recording metadata;
A method of recording the metadata, wherein the recording unit includes a step of recording the recording metadata in association with the predetermined position of the video data in the data storage unit. The recording metadata generation unit editing the old metadata information after comparing the old metadata and the new metadata;
The metadata recording method according to claim 5, further comprising a step of rewriting the old metadata with the edited old metadata.   When the plurality of old metadata is added in the vicinity of the predetermined position, the recording metadata generation unit compares the plurality of old metadata with the new metadata, and compares the old metadata with the old metadata. 6. The metadata recording method according to claim 5, further comprising a step of generating the recording metadata by editing according to the comparison result. A control unit for receiving input information from the outside;
A reading unit for retrieving old metadata added to video data stored in the data storage unit;
A new metadata generation unit that generates new metadata based on the input information;
A recording metadata generation unit that generates recording metadata from the old metadata and the new metadata;
A metadata recording method of a metadata recording apparatus comprising: a recording unit that records the recording metadata on the video data in the data storage unit,
The control unit accepting the input information including information constituting the new metadata from outside and position information of a predetermined position to which the new metadata in the video data is added;
The reading unit detects whether the old metadata exists at the predetermined position with respect to the video data based on the position information of the predetermined position, and retrieves the detected old metadata;
The new metadata generation unit generating new metadata based on information constituting the new metadata; and
The recording metadata generation unit comparing the old metadata and the new metadata, editing the old metadata according to a comparison result, and generating the recording metadata;
A method of recording metadata, the recording unit comprising: recording the recorded metadata at the old metadata position in the data storage unit.

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