KR20030034410A - method and the system for producting BIFS(BInary Format for Scenes language) for MPEG-4 contents - Google Patents

Abstract

PURPOSE: A method and a system for generating BIFS language for MPEG-4 contents are provided to allow a producer to generate MPEG-4 contents without learning the complicated structure of the binary format for scenes(BIFS) language. CONSTITUTION: When an editing position of an icon is inputted, MPEG-4 audio-visual objects corresponding to the icon are arranged at the editing position to perform edition of an MPEG-4 scene, and the MPEG-4 scene is previously shown, to visually produce the MPEG-4 scene. A produced object reproduction time bar for setting reproduction time of the objects constructing the MPEG-4 scene is provided, and reproduction time for each object is set by clicking-and-dragging the object reproduction time bar. Production of an animation is divided into multiple steps, and a window required for each step is provided to allow a producer to input information required for producing the animation. BIFS language is generated from the information produced at each of the steps.

Description

Method and the system for producting BIFS (BInary Format for Scenes language) for MPEG-4 contents}

The present invention relates to a BIFS generation method and system for MPEG-4 contents for generating a Binary Format for Scenes (BIFS) description language representing MPEG-4 contents in an intuitive authoring environment.

MPEG-4 content is a multimedia content capable of user interaction generated by synthesizing audiovisual media such as video, audio, image, text, graphics, and the like. Referring to FIG. And attribute information are expressed in BIFS, and MPEG-4 contents are generated by synthesizing them with actual media data. The generated content is delivered to the end user in real time through a server, and MPEG-4's feature of supporting multimedia data services over a wide range of networks allows users to view MPEG-4 content through various devices.

BIFS is MPEG-4 part1. Introduced in System, the basic concept is derived from VRML. BIFS has a data structure consisting of nodes and fields that represent all information about media object combinations, transformations, and transfers, and has a complex format and content structure.

Existing MPEG-4 authoring tools present the user with a tree-structured BIFS and provide an interface for controlling it, requiring authors to learn about the nodes and fields of BIFS, and consume a lot of time and effort in authoring. Let's do it.

Existing MPEG-4 BIFS creation editors provide a BIFS professional interface for users to directly control the BIFS environment, which makes it difficult for general users to manipulate them. General multimedia authoring tools provide intuitive editing for users. Although it provides an environment, it has a problem in that it does not support the creation of MPEG-4 content with reusability, usability, and real-time transmission through various networks by using its own format.

The present invention has been made to solve the problems of the prior art, the author can create MPEG-4 content without acquiring knowledge of BIFS having a complicated tree structure in advance, it is economical when authoring MPEG-4 content It is an object of the present invention to provide a method and system for generating BIFS of MPEG-4 contents that can increase efficiency.

1 is a conceptual diagram of general MPEG-4 content authoring and playback.

2 is a block diagram of a BIFS description language creation system for authoring MPEG-4 content according to the present invention;

3A and 3B are flowcharts of an MPEG-4 scene authoring material according to the present invention;

4 is a flowchart of an animation information authoring material according to the present invention;

5 is a flow diagram of BIFS description language generation in accordance with the present invention.

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

100: intuitive editor 110: scene authoring

120: time authoring unit 130: animation authoring unit

140: editing management unit 150: icon unit

200: storage 210: copyright information

211: authoring object information 212: group / hierarchical information

213: animation information 220: BIFS information

221: scene tree BIFS222: object descriptor BIFS

223: Route BIFS 300: BIFS Generator

310: BIFS generation management unit 320: BIFS node information processing unit

330: BIFS generation rule provider 331: Scene tree generation rule information

332: object descriptor generation rule information 333: route information generation rule information

According to one aspect of the BIFS generation method of the MPEG-4 content of the present invention that achieves this object, in the method for generating a BIFS description language representing the MPEG-4 content, by dragging and dropping the icon of the author When an edit position is input, the MPEG-4 scene is edited by arranging an MPEG-4 audiovisual object corresponding to the icon at the edit position, and the playback scene of the edited MPEG-4 scene is previewed at the time of authoring. A visual scene authoring step for visually authoring an MPEG-4 scene, and an authoring object playback timebar for time division into seconds for playback of all objects constituting the MPEG-4 scene authored in the visual scene authoring step; The time information authoring step of setting the playback time for each object by click-and-drag of the authoring object playback time bar, and the time information set in the time information authoring step To author animations that dynamically change MPEG-4 scenes, multi-stage animation information that separates the animation authoring into several stages, and provides the necessary dialog boxes for each step to input the information required for authoring the animation by the mouse click of the author. An authoring step and a BIFS generation step of generating a BIFS description language corresponding to the BIFS node information and the BIFS scene generation rule preset with the information authored in each authoring step are performed.

In addition, according to one aspect of the BIFS generation system of MPEG-4 content of the present invention, in the system for generating a BIFS description language representing MPEG-4 content, a scene authoring and a time division environment in seconds to visually author the scene Intuitive editor that creates copyright information by authoring and editing MPEG-4 content by using authoring and click-and-drag method to set playback time for each object, and authoring animation using multi-level interactive method, and intuitive editor For BIFS node information and BIFS scene creation rules, the BIFS generator generates a BIFS description language, and the author information created in the intuitive editor and the BIFS generator generated by the BIFS generator. It comprises a storage unit for storing.

In addition, according to one aspect of the recording medium for performing the BIFS generation method of MPEG-4 content of the present invention, it can be executed by the digital processing apparatus to perform the method for generating a BIFS description language representing MPEG-4 content. In a recording medium tangibly embodied and readable by a digital processing device, the arrangement of icons corresponding to MPEG-4 audiovisual objects selected in the toolbox by dragging and dropping the author's icons Correspondingly, an MPEG-4 scene is edited, and a visual scene authoring step of visually authoring an MPEG-4 scene by showing the reproduction scene of the edited MPEG-4 scene in advance at the authoring, and authoring at the visual scene authoring step Provides an authoring object playback time bar for time division into seconds for the playback of all objects composing the composed MPEG-4 scene. Animation authoring for authoring animations that dynamically change MPEG-4 scenes with respect to the time information set in the time information authoring step and time information authoring step for setting the playback time for each object by click-and-drag of the playback time bar. Multi-level animation information authoring step that divides into several steps, and provides necessary dialog box for each step and inputs necessary information for animation authoring by mouse click of author, and BIFS node information which pre-sets information authored in each authoring step And a BIFS generation step of generating a BIFS description language according to the BIFS scene generation rule.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

2 is a block diagram of a BIFS description language creation system for authoring MPEG-4 content according to the present invention. Referring to FIG. 2, the BIFS description language writing system for authoring MPEG-4 content according to the present invention may include an intuitive editor 100, a storage unit 200, and a BIFS generator 300.

The intuitive editor 100 provides authors with an intuitive MPEG-4 content authoring environment to edit and author the authored data, scene authoring unit 110, time authoring unit 120, animation authoring unit 130, and editing management unit. 140, the icon unit 150 is configured.

The scene authoring unit 110 performs a function of visually authoring an MPEG-4 scene supporting drag-and-drop of icons and WYSIWYG (What You See Is What You Get) method. Scene authoring is done by finding the icon corresponding to the MPEG-4 audiovisual object in the toolbox and placing it on the editor. The content shown in the authoring is the same as the content shown in the MPEG-4 player.

The time authoring unit 120 performs time authoring on media objects constituting MPEG-4 content, and sets a playback time for each object using a time division environment in seconds. For example, a time division environment may consist of N rows M + 1 columns, where N is the number of media objects that make up the content, one column is the media object identifier, and the remaining M columns are in seconds for that object. It is a space divided to set the playback time. The default time value generated for each object is represented by a bar, and the author enlarges or reduces the time value in a click-and-drag manner.

The animation authoring unit 130 performs keyframe animation authoring using a multi-level interactive method of providing dynamic change of an MPEG-4 scene. MPEG-4 expresses the change of content with respect to time or user event by keyframe animation technique. In order to easily author such keyframe animation, the present invention divides the animation authoring into several steps, and provides a dialog box for each step, and the author inputs the information necessary for authoring the animation with only a mouse click.

The intuitive authoring environment includes a scene authoring space by the scene authoring unit 110, a temporal authoring space by the time authoring unit 120, and an animation authoring space by the animation authoring unit 130.

The icon unit 150 provides each authoring space with an icon that serves as an interface for assisting media objects authored in these spaces and their attributes.

A scene refers to content in which media objects are arranged on a screen in MPEG-4 content composed of media objects such as audio, video, image, graphics, and text.

The scene authoring space provided by the scene authoring unit 110 selects, drag-and-drops, icons for visual media objects required for composing a scene of the content, and adds them in a hidden icon form for audio objects. Provide visual work that can be done.

The time authoring space provided by the time authoring unit 120 may set playback start and end times for media objects listed in the scene authoring space.

The animation authoring space provided by the animation authoring unit 130 is a space for authoring information for providing a keyframe animation of a scene change according to the occurrence of a mouse and a time event for each object. Have an interactive environment to tread on.

The editing management unit 140 processes the window events generated in each authoring environment, reflects the work to the user by reflecting the authoring environment, and stores the authored content in the authoring information 210.

The storage unit 200 stores the authoring information 210 generated by the intuitive editor 100 and the BIFS information 220 generated by the BIFS generator 300.

Authoring information 210 is divided into authoring object information 211, group / hierarchical information 212, and animation information 213. An authoring object refers to an object that stores all property information for various types of media objects used for authoring content. When a media object is represented in a scene authoring space on an authoring screen, an authoring object is created by creating an instance of the authoring object. The information 211 is stored. The group / hierarchical information 212 stores group relationships of objects, and groups are formed when representing a set of media objects using the same coordinate system as when a plurality of physical media objects are collected to have a logical meaning. The animation information 213 contains animation information generated for the mouse and time events set by the user.

The BIFS information 220 includes scene tree BIFS information 221 constituting the authored scene as a tree, and information necessary for the location, encoding, and decoding of object data on image, video, and audio media objects included in the tree. The object descriptor BIFS information 222 to be stored and the route BIFS information 223 defining a connection relationship between a node and a field in the scene tree with respect to animation information defined by a user are included.

The BIFS generator 300 configures a content intuitively created in the intuitive editor 100 in a BIFS description language. MPEG-4 is created by expressing relations and attributes of various media constituting contents in BIFS description language and mixing them with actual media data. The BIFS description language defines nodes and fields to express the basic attributes of media and the relationship between media, and the complexity of the structure requires a lot of time to learn. In other words, the BIFS generation rules are defined in advance, and the authored information is generated in the BIFS description language.

To this end, the authoring information 210 is received from the storage unit 200 to generate a BIFS description language and stored in the storage unit 200 as a BIFS 220 in the form of a text script. The BIFS generator 300 includes a BIFS generation manager 310, a BIFS node information processing unit 320, and a BIFS generation rule information processing unit 330.

The BIFS generation manager 310 interprets the authoring information 210 and generates the BIFS code in text form by combining the BIFS nodes 310 according to the predefined BIFS generation rule 330.

The BIFS node information processing unit 320 generates each node information that forms a scene tree with respect to the authoring information, and methods necessary for generating BIFS are added based on nodes defined in the MPEG-4 Part1 System.

The BIFS generation rule information processing unit 330 provides BIFS rule information for converting the authoring information 210 stored in the storage unit 200 into a BIFS description language.

BIFS presents the authored scene as a tree. For image, video, and audio media objects included in the tree, an object descriptor is needed that contains the information needed to locate, encode, and decode the object data. It also includes route information that defines the connection between nodes and fields in the scene tree for user-defined animation information.

Accordingly, the BIFS generation rule information providing unit 330 defines and provides the scene tree generation rule information 331, the object descriptor generation rule information 332, and the route information generation rule information 333.

The scene tree generation rule information 331 is a scene tree generation rule constituting the authored scene as a tree, and the object descriptor generation rule information 332 is a position for the object data for image, video, and audio media objects included in the tree. And the object descriptor generation rule that contains information necessary for encoding and decoding, and the route information generation rule information 333 includes a route generation rule that defines a connection relationship between nodes and fields in the scene tree for animation information defined by a user. do.

3A and 3B are a flowchart of an MPEG-4 scene authoring according to the present invention. Referring to FIGS. 3A and 3B, an event processing process occurring in a play time authoring for an MPEG-4 scene authoring environment of an intuitive authoring environment and a media object included in a scene will be described.

First, when receiving an event generated by the user (S101), the authoring environment in which the event occurs is distinguished (S102, S121). That is, it is determined whether or not it occurred in the scene authoring environment or in the time authoring environment.

In case of an event occurring in the scene authoring environment, it is determined again whether a media object insertion, property setting, or group setting event occurs (S103, S111, S115), and necessary event processing routines are executed in each case. That is, in the case of the media insertion event (S103), in the case of the media insertion event, the media type such as audio, video, image, geometric object, text, etc. is checked (S104) to prepare to create an authoring object for the media. . Then, the mouse dragging area of the user is received on the screen to determine the size and space position of the currently selected media to occupy (S105). The determined size and position determine whether the area occupied by the media object is valid (S106), and if it is valid, create an object corresponding to the media type (S107), initialize the attribute (S108), and then A basic playback time of the created authoring object is set and displayed (S109). In the case of the property setting event (S111), the object existing at the time of occurrence of the event is checked (S112) and a property setting dialog box corresponding to the object is provided (S113). If the user wants to update the contents set in the dialog box, the attribute of the authoring object is updated (S114).

Meanwhile, by determining whether or not it is a group setting event (S115), in the case of a group setting event, a group setting area according to a mouse input size is obtained (S116), and an authoring object belonging to the mouse dragging area is extracted (S117). After the group is generated (S118), it is stored in the group-layer copyright information 212 of the copyright information (S119). The changed contents (S110, S114, S119) are all expressed on the author screen (S120) to provide the user with WYSIWYG.

On the other hand, it is determined whether the event generated by the user occurred in the time authoring environment (S121). If the event occurred in the time writing environment, the input time value of the mouse is received (S122) and the play time is changed based on the input value. After extracting an authoring object that should be extracted, it is again determined whether or not it is generated in the authoring object playback time bar (S123). S124) The playback time attribute of the authoring object is updated with the newly set contents by adjusting the playback time by the mouse dragging area value (S125) and displayed on the screen (S126).

4 is a flowchart of animation information authoring according to the present invention. Referring to FIG. 4, a process of generating animation information in an interactive animation authoring environment will be described.

When the user selects a menu for inputting an animation (S201), a dialog box for inputting animation information is popped up and provided (S202). This dialog box includes the event type designation space that drives the animation, the location designation space where the event occurs (the object designation space that receives the event), the object designation space that must change dynamically according to the event, and the space that specifies the content of the animation. Have

According to the input contents of this dialog box, specify the location where the event occurs (the object designation space that receives the event) (S203), specify the object that needs to change dynamically according to the event (S204), and the event type that induces the animation. To specify (S205).

Events that induce animations include user mouse input and time events that generate animations at specific times. Animation types support color, position, rotation, and zooming. Multiple conversion information of the same type can be inserted for one animation. The generated content is stored in the animation information of the copyrighted information, and becomes the keyframe information for keyframe animation support when the MPEG-4 BIFS is changed. Every authoring object may be an object that receives an event and an object that needs to change dynamically according to the event, and the receiving object and the change object may be the same object.

Accordingly, it is determined whether or not the generated event requests a color change (S206). If a color change is requested, a change color is input (S207), and if it is determined whether to request the addition of another color (S208). If the requested change color is input and there is no request for adding another color, the changed information is added to the animation information of the copyrighted information and stored (S209).

On the other hand, if it is determined whether or not the event is requested to change the location (S210) when the location change is requested to receive the movement position of the object (S211), if it is determined whether to request the addition of another location If the requested location is input, otherwise, the changed information is added to the animation information of the copyrighted information and stored (S209).

On the other hand, if it is determined whether or not the generated event is to request the rotation (S213), if the rotation is requested, the rotation angle of the object is input (S211), if it is determined whether the addition request of the other rotation angle request If the received rotation angle is not received, the changed information is added to the animation information of the copyrighted information and stored (S209).

On the other hand, it is determined whether or not the event is requested to change the enlargement or reduction (S216), if the enlargement or reduction is requested to receive the enlargement or reduction ratio (S217), it is determined whether to request the enlargement / reduction of the other ratio If so, the requested enlargement / reduction ratio is input. If not, the changed information is added to the animation information of the copyrighted information and stored (S209).

5 is a flow diagram of BIFS description language generation in accordance with the present invention. Referring to FIG. 5, a description will be given of a process in which a BIFS generator generates information written in an intuitive editor in a BIFS description language.

When the user requests MPEG-4 BIFS generation in the authoring environment (S301), the BIFS generation manager 300 obtains authoring object information 211 and group / hierarchical information 212 of the authoring information 210 (S302). ). First, a hierarchical structure of the BIFS scene tree is formed from the obtained group / hierarchical information 212 to generate a skeleton of the scene tree (S303). The end node of the framed scene tree becomes an authoring object, and the authoring object is not represented in BIFS. Therefore, it is determined whether all objects of the authoring object set are included in the scene tree (S305), and when not included in the scene tree, the scene tree generation rule information providing unit 330 for the authoring objects to be included in the scene tree. Reads the creation rule defined for each author object in step S305, generates the necessary BIFS node required in the generation rule in step S306, and combines BIFS according to the creation rule and adds it to the scene tree in step S307. For the authoring object added to the current scene tree, it is determined whether the authoring object is an image, a video, or an audio object (S308). And object descriptors representing encoding and decoding information are required. The object descriptor generation rule information 332 is read (S309) to generate a BIFS node required by the object descriptor rule (S310), and the BIFS node according to the object descriptor generation rule. After setting the generated object descriptor attribute information (S311) (S312) and including all authoring objects in the scene tree (S304), the object descriptor BIFS is stored in the storage space (S313).

Meanwhile, when all objects of the authoring object set are included in the scene tree, the BIFS generator 300 sets attributes of nodes in the scene tree (S314), and obtains animation information 213 from the authoring information 210 (S315). Analyze the animation information (S316). The node necessary to perform the animation is added to the scene tree based on the analyzed information (S317), and route information is generated (S318). Route information represents a path for information transfer between scene tree nodes during animation. The route information thus generated is stored in the route information BIFS (S319).

According to the present invention, since MPEG-4 content can be generated in an intuitive authoring environment supporting drag-and-drop / click-and-drag / WYSIWYG / multilevel conversation method, the author has a complicated structure of BIFS. MPEG-4 content can be generated without acquiring the contents of the document, which can reduce the effort consumed to develop MPEG-4 content, and increase the economics and efficiency of authoring MPEG-4 content.

Claims (13)

In the method for generating a BIFS language representing MPEG-4 content, When the editing position of the icon is input by the author's icon drag-and-drop, the MPEG-4 audiovisual object corresponding to the icon is placed at the editing position to edit the MPEG-4 scene, and the edited MPEG- 4) a visual scene authoring step of visually authoring an MPEG-4 scene by showing a playback scene of the scene before authoring; An authoring object play time bar for setting a play time of an object constituting the MPEG-4 scene authored in the visual scene authoring step is provided, and a play time for each object is determined by a click-and-drag of the authoring object play time bar. The time information authoring step that you set up, In order to author an animation that dynamically changes an MPEG-4 scene with respect to the time information set in the time information authoring step, the animation authoring is divided into several steps, and each dialog is provided for each step to provide animation authoring by clicking the author's mouse. A multi-stage animation info authoring step to enter the necessary information for A BIFS language generation method for MPEG-4 content, which performs a BIFS generation step of generating a BIFS description language according to BIFS node information and BIFS scene generation rules based on information authored in each authoring step. The method of claim 1, wherein the visual scene authoring step, If the event generated by the author is a media object insertion event and determines whether it is a media insertion event, the media type such as audio, video, image, geometric object, and text is checked to prepare for creation of an authoring object for the media. To do that, Determining a size and a spatial position of the currently selected media by receiving a mouse dragging area by the author on the screen; The determined size and position determine whether the area occupied by the media object is valid, and if it is valid, creates an object corresponding to the media type, initializes the property, and then sets the default playback time of the authoring object created in the time authoring space. Setting up and displaying, When the event generated by the author is a property setting event, if an object exists at the time when the event occurs, the property setting dialog box corresponding to the object is provided, and the user wants to update the content set in the dialog box. Updating the attributes of the authoring object, It is determined whether the event generated by the author is a group setting event, and in the case of a group setting event, a group setting area according to the mouse input size of the author is obtained, and an authoring object belonging to the mouse dragging area is extracted to determine a group. Create and save, BIFS language generation method for the MPEG-4 content performing the step of displaying to the author about the information changed in each step. The method of claim 1, wherein the time information authoring step, Receiving an input point value of a mouse by an author, extracting an authoring object whose playback time is to be changed based on the input value, and determining whether the authoring object is generated at the authoring object playback time bar; If it occurs in the authoring object playback time bar, receiving the author's mouse dragging region value and adjusting the playing time by the mouse dragging region value to update the playing time attribute of the authoring object with newly set contents; A method of generating a BIFS language for MPEG-4 content, which comprises displaying updated information on a screen. The method of claim 1, wherein the multi-stage animation information authoring step, If a menu for inputting animation is selected by the author, providing a pop-up dialog box for inputting animation information, Designating a location at which an event occurs according to the input contents of the dialog box; Designating an object to be changed dynamically according to the event occurred; A method of generating a BIFS language for MPEG-4 content, in which an animation type is generated by specifying an event type for inducing an animation and generating and storing animation information according to an author's mouse input and an event generating an animation at a specific time. The method of claim 4, wherein the generating and storing of the animation information comprises: Determining whether or not the generated event requests a color change, and if a color change is requested, inputting the changed color and adding the changed information to the animation information of the copyright information; Determining whether or not the generated event requests a location change, and when a location change is requested, receiving a moving position of the object and adding the changed information to animation information of the copyright information; Determining whether or not the generated event requests rotation, and if rotation is requested, receiving the rotation angle of the object and adding the changed information to animation information of the copyright information; In case that the enlarged or reduced is requested by determining whether or not the event is requested to be enlarged or reduced, MPEG-M that receives the enlargement or reduction ratio and adds the changed information to the animation information of the copyright information to store the changed information. 4 How to create a BIFS language for content. The method of claim 1, wherein the BIFS generation step, Acquiring author object information and group / hierarchical information from the authoring information when the author requests to create a BIFS; Generating a skeleton of a scene tree by forming a hierarchical structure of a BIFS scene tree using the obtained group / hierarchical information; Reading the creation rules defined for each authoring object, creating the necessary BIFS nodes required by the creation rules, combining BIFS according to the creation rules, and adding them to the scene tree; Determining whether the copyright object is an image, a video, or an audio object with respect to the copyright object added to the scene tree; As a result of the determination, in case of objects representing image, video, and audio, the BIFS node required by the object descriptor rule is created by combining object descriptor generation rule information indicating their physical data location, encoding, and decoding information. A method for generating a BIFS language for MPEG-4 content, which includes setting and storing all authoring objects in a scene tree after setting the specified object descriptor attribute information. In a system for generating a BIFS description language representing MPEG-4 content, Visually authoring scenes, authoring scenes in seconds, setting time durations for each object using a click-and-drag method, and authoring MPEG-4 content using multi-level interactive animation Intuitive editing unit for editing the work to create the work information, A BIFS generation unit for generating a BIFS description language corresponding to predetermined BIFS node information and BIFS scene generation rule with respect to the authored information generated in the intuitive editor; BIFS language generation system for MPEG-4 content including a storage for storing the authoring information generated by the intuitive editing unit and the BIFS generation information generated by the BIFS generation unit. The method of claim 7, wherein the intuitive editing unit, When the editing position of the icon is input by the author's icon drag-and-drop, the MPEG-4 audiovisual object corresponding to the icon is placed at the editing position to edit the MPEG-4 scene, and the edited MPEG- A scene authoring unit which visually authors MPEG-4 scenes by previewing the playback scene of the scene at the time of authoring; Providing an authoring object play time bar for setting a play time of an object constituting the MPEG-4 scene authored by the scene authoring unit, and setting a play time for each object by click-and-drag of the authoring object play time bar. Time authoring department, In order to author an animation that dynamically changes the MPEG-4 scene with respect to the time information set by the time authoring unit, the animation authoring is divided into several stages, and each dialog is provided for each stage to provide animation dialog by clicking the author's mouse. An animation authoring unit to input necessary information, An editing management unit which processes the window events generated in each authoring environment provided by the authoring unit, reflects the work to the authors by reflecting them in the authoring environment, and stores and manages the authored contents in the storage unit; And an icon unit providing icons to each authoring space, the media object being authored in each authoring environment provided by each authoring unit, and an icon serving as an interface for designating their attributes. The method of claim 7, wherein the BIFS generation unit, A node information processing unit for generating respective node information forming a scene tree with respect to the copyright information; A BIFS generation rule information providing unit providing BIFS rule information for converting the copyright information stored in the storage into a BIFS description language; A BIFS generation management unit configured to interpret the authoring information stored in the storage unit and generate the BIFS code in text form by combining the BIFS nodes generated by the node information processing unit according to the BIFS generation rule provided by the BIFS generation rule information processing unit; BIFS language generation system for MPEG-4 content. 10. The method of claim 9, wherein the BIFS generation rule of the BIFS generation rule provider, Scene tree generation rules that organize the authored scene into a tree, An object descriptor generation rule for storing image, video, and audio media objects included in the tree containing information necessary for position, encoding, and decoding of object data; And a route generation rule for defining a linkage relationship between a node and a field in the scene tree for user-defined animation information. The method of claim 7, wherein the copyright information stored in the storage unit, When the media object is displayed on the authoring screen in the intuitive editing unit, an instance of each authoring object is created and authoring object information, which is attribute information, for various types of media objects used for authoring content; Group / hierarchical information for storing group relationships of the objects using a coordinate system for expressing an association for the media object; BIFS language generation system for MPEG-4 contents including animation information which is animation information generated for a mouse and time event set by the author for each object. The method of claim 7, wherein the BIFS information stored in the storage unit, Scene tree BIFS information that organizes the authored scene into a tree, The object descriptor BIFS information containing the information necessary for the location, encoding and decoding of object data for the image, video and audio media objects included in the tree; BIFS language generation system for MPEG-4 content including routed BIFS information that defines a connection relationship between nodes and fields in the scene tree for user-defined animation information. In order to perform a method for generating a BIFS description language representing MPEG-4 content, a program of instructions executable by a digital processing apparatus is tangibly embodied, and in a recording medium that can be read by a digital processing apparatus, When the editing position of the icon is input by the author's icon drag-and-drop, the MPEG-4 audiovisual object corresponding to the icon is placed at the editing position to edit the MPEG-4 scene, and the edited MPEG- 4) a visual scene authoring step of visually authoring an MPEG-4 scene by showing a playback scene of the scene before authoring; An authoring object play time bar for setting a play time of an object constituting the MPEG-4 scene authored in the visual scene authoring step is provided, and a play time for each object is determined by a click-and-drag of the authoring object play time bar. The time information authoring step that you set up, In order to author an animation that dynamically changes an MPEG-4 scene with respect to the time information set in the time information authoring step, the animation authoring is divided into several steps, and each dialog is provided for each step to provide animation authoring by clicking the author's mouse. A multi-stage animation info authoring step to enter the necessary information for And a BIFS generation step of generating a BIFS description language corresponding to the BIFS node information and the BIFS scene generation rule.