KR20070014896A - Method for dividing and transmitting media file and apparatus thereof - Google Patents

Abstract

A method and a device for dividing/transferring a media file are provided to make a streaming media file played well without pause in a client even if a media file reception speed of the client is not fast, as the streaming media file is divided by leaving an overlapped section. A device for dividing/transferring a media file consists of a receiver, a media file divider and a transmitter. The receiver receives the media file from a CP(Content Provider). The media file divider generates video files by dividing an audio and video file separated from the media file. The transmitter transmits the audio file and the video files to the client. The video files are transmitted and reproduced in the client(10) by using a streaming mode. The video files are generated by including at least one overlapped area. The client plays the media file by synchronizing the video files with the audio file based on time information.

Description

Method for dividing and transmitting media file and device therefor {Method for dividing and transmitting media file and Apparatus}

1 is a block diagram of a content delivery system between a client and a content provider according to a preferred embodiment of the present invention.

2 is a flowchart illustrating a method of splitting and transmitting a media file in accordance with a preferred embodiment of the present invention.

3 is a diagram showing a method of dividing a media file according to the first preferred embodiment of the present invention.

4 is a diagram illustrating a media file segmentation method according to a second preferred embodiment of the present invention.

5 to 7 illustrate a process of dividing a flash file using a flash program according to a preferred embodiment of the present invention.

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

10: client

20: Internet

30: Web ad server

40: database

310, 410: media files

The present invention relates to a method and apparatus for processing a media file, and more particularly, to a method and apparatus for processing a streaming media file.

Currently, due to the development of media-related technology and internet-related technology, a content realization method of constructing a web page on which a video is implemented has been developed and implemented to be convenient for computer users and to enhance the use effect of computer users. It is increasing the interest and satisfaction of computer users by providing information by organizing contents in the form of dynamic images and moving away from the in-image form.

Currently, computer media file related programs that implement images or audio output through a web browser using the Internet include Microsoft's Window Media Player and Progressive Network's Real Media Player. In addition, current software for implementing images on a web page includes Macromedia's Flash. Flash is a web animation authoring tool based on Vector Drawing. Flash is used to create vector-based animations that involve graphical illustrations and simple interactions. Files that are small enough to stream over a modem connection, and that can be antialiased and scaled up and down on the screen. Make Flash is fast and smooth, making it easy to find on many websites today. Unlike GIF or JPEG, which supports raster-format animation, Flash files are simple, efficient, and optimized for transfer. It became.

Here, the streaming method is a technique that downloads and plays video, sound, and animation files from the Internet to a hard disk drive in real time without downloading. Even before all the files are transferred, the client browser or plug-in will begin to present the data. Therefore, the play time is shortened and the capacity of the hard disk drive is hardly affected. For streaming to work, the client side receiving the data must be able to collect the data and send it to an application that converts the data into a sound or picture. If the client receives data too fast, it will store the extra data in a buffer and stream it at the same time.

However, the current streaming method is to reproduce the entire media file in real time, there is a problem that the representation of the data is not smooth when the data reception speed is not large.

The present invention provides a media file division transmission method and apparatus for dividing a media file and transmitting the same by a streaming method to a client.

In addition, the present invention provides a method and apparatus for transmitting and dividing a media file that can be continuously played even if the speed received by the client is not great when the media file is divided so that the overlapped area is generated and transmitted to the client by the streaming method. To provide.

The present invention also provides a media file division transmission method and apparatus capable of transmitting a media file at a low cost when calculating a charge in a peak manner by dividing the media file and transmitting the media file to a client by streaming.

According to an aspect of the present invention, a media file processing method of a media file processing apparatus can be provided.

According to a preferred embodiment, a method of processing a media file in a device for processing the media file comprises generating n video files by dividing the media file including an overlapping area, wherein the generated n video files are generated by the client. Can be transmitted and played in a streaming manner.

Also, the method of processing a media file may further include generating an audio file corresponding to the media file, and transmitting the generated audio file to the client.

According to another aspect of the present invention, a method of dividing a media file in a media file processing apparatus can be provided.

According to a preferred embodiment, a method of dividing a media file in a media file processing apparatus includes receiving a media file from a content provider, generating n video files by dividing an audio file and a media file separated from the media file, And transmitting the audio file and the n video files to the client, wherein the generated n video files are transmitted to the client in a streaming manner and played.

Here, n video files may be generated including at least one overlapping area, and each of the overlapping areas included in the n video files may have the same size.

In addition, the client may play the media file by synchronizing the video file with the audio file based on the time information, and the time information may be frame information corresponding to the audio file and the video file.

According to another aspect of the present invention, a method of dividing a media file in a flash web animation production tool can be provided.

According to a preferred embodiment, a method of dividing a media file in a flash web animation creation tool includes generating n video files corresponding to the media file, and sequentially generating frames of each video file corresponding to a preset size. Dividing step, where each video file includes an adjacent video file and an overlapping region, generating n flash movie files from the divided video file, where each flash movie file is an adjacent flash movie file and an overlapping region. Storing the generated n flash movie files, wherein the generated n flash movie files are transmitted to the client in a streaming manner and played.

Also, the method of dividing the media file in the flash web animation production tool may further include generating an audio file corresponding to the media file, and transmitting the generated audio file to the client.

Here, each overlapped area included in the n flash movie files may have the same size, and the client may play the media file by synchronizing the flash movie file with the audio file based on the time information. Frame information corresponding to the file and the flash movie file.

According to another aspect of the present invention, a media file division transmission apparatus can be provided.

According to a preferred embodiment, the media file division transmitting apparatus comprises: a receiver for receiving a media file from a content provider, a media file divider for generating n video files by dividing an audio file and a media file separated from the media file, and an audio file; Including a transmission unit for transmitting the n video files to the client, the generated n video files may be transmitted to the client in a streaming manner and played.

Here, the n video files may be generated including at least one overlapping area, each overlapping area included in the n video files may be the same size, and the client may assign the audio file to the audio file based on the time information. The media file may be played by synchronizing the video file, and the time information may be frame information corresponding to the audio file and the video file.

According to another aspect of the present invention, it is possible to provide a recording medium storing a program for performing a media file division transmission method.

A program of instructions for executing a method for dividing a media file according to the present invention is tangibly implemented, and a recording medium which can be read by the media file processing apparatus generates n video files corresponding to the media file. Step, dividing each generated video file sequentially according to a preset size, wherein each video file includes an adjacent video file and an overlapping area; n flash movie files from the divided video file Generating each flash movie file, wherein each flash movie file aligns frame information of an adjacent flash movie file with an overlapping region, and stores the generated n flash movie files, wherein the generated n flash movie files are stored in the client. Media files that are streamed to and played on The divided transmission method can be performed.

Hereinafter, preferred embodiments of a media file division transmission method and apparatus thereof according to the present invention will be described in detail with reference to the accompanying drawings, and in the following description with reference to the accompanying drawings, the same or corresponding components regardless of reference numerals. Denotes the same reference numerals and duplicate description thereof will be omitted. In addition, the overall system will be described first with reference to FIG. 1 before describing the preferred embodiments of the present invention in detail.

1 is a block diagram of a content delivery system between a client and a content provider according to a preferred embodiment of the present invention. Referring to FIG. 1, the entire system of the present invention includes a database 40 in which information on content to be transmitted to the client 10 is described, and a web advertisement server that provides corresponding content corresponding to the information of the database 40 ( 30) and the Internet 20 connecting them.

The client 10 receives the content from the web advertisement server 30 using the database 40 by the streaming method. For example, if the content is advertising data, the database 40 stores media, advertisers, brands, advertising schedules, and advertisement results. Such information may be transmitted at any time and in some way. Decide if it will work. Thereafter, the web advertisement server 30 generates an advertisement script scheduled in the database 40 and transmits the corresponding advertisement data to the client 10. Here, the web advertisement server 30 is a server for performing a solution for video advertisement on an internet web page, and may be, for example, a web application server (WAS). The web ad server 30 may divide web data (data such as a video, an image, a flash, a sound, etc.), which is a program running on the web server, in a predetermined manner, and then the web data may be played back in synchronization with the client 10. Create and send a sound file to ensure

Here, the load balancing on the data may be performed in various ways. For example, the load balancing on the data may be performed by a round robin method that processes each script server in turn and processes the CDN service. In addition, the advertisement data is stored in the web advertisement server 30 or the database 40, and is transmitted to the client 10 based on the result of scheduling in the database 40.

In addition, it is natural that various schemes designed to increase the data transfer rate may be provided. In other words, in order to solve the problems of video quality that is broken or slow, such as a content delivery network (CDN), by installing a server in a major point of the Internet network and storing the contents of the content provider in advance, You can also receive content from the nearest place.

In addition, in the case of charging the data transmitted from the charging device based on the peak data, the present invention divides and transmits a media file in terms of the peak data amount, the peak duration, and the number of peaks per unit time. Advantageous over traditional methods, it has the advantage of low cost data transfer.

2 is a flowchart illustrating a method of transmitting and dividing a media file according to an exemplary embodiment of the present invention. The process performed below is performed by a media file processing apparatus, where the media file processing apparatus refers to a device or a program that can generate and modify a media file. For example, it may be a web ad server, a flash of Macromedia, etc., and when the flash is used, the corresponding software is a media file processing device. The following steps are performed using a menu provided in the media file processing device. Can be performed.

In step S210, the media file retrieved from the media file processing apparatus is divided into preset sizes. That is, it is determined whether the total media file is divided into at least how many or the frame number of the divided file. In this case, the media files may be divided so as not to overlap each other or divided so as to overlap each other. In the case of overlapping and dividing, data stored in the streaming method can be pre-stored by determining the frame information, so that the data can be played without interruption. Here, when there are a plurality of overlapping regions, all of them may have a constant size or may each have a certain size. The division size may vary depending on the transmission environment and may be determined according to the data rate.

In step S220, n video files are generated from the media file that has been divided. Where n is a natural number of 1 or more, each video file is part of the above-described media file, and when the n video files are combined, the entire media file can be played, and the size is larger than or equal to the total media file. That is, when a video file is generated without an overlapping area, the total size of the n video files is equal to the size of the media file. When there is an overlapping area, the total size of the n video files is larger than the size of the media file. Here, only the sound is separated from the media file to create the audio file.

In step S230, the generated video file and the audio file are transmitted to the client in a streaming manner, and in step S240, the client synchronizes the video file with the audio file to play the video file and the audio file corresponding to the media file. Here, the process of synchronizing the video file to the audio file by the client can be performed by various criteria. For example, if there is no overlapping region, the media file cannot be superimposed and played, and thus the audio file can be reproduced in a conventional manner. The video files are also played in the order in which the frames are described. In addition, when there is an overlapping area, synchronization may be performed by time information corresponding to the audio file and the video file, which may be synchronized by comparing the start frame and the end frame of each file.

In addition, the media processing apparatus according to the present invention in order to perform the steps as described above is a receiver for receiving a media file from a content provider or extracted from a predetermined database, the audio file separated from the media file and n files by dividing n It may include a media file divider for generating video files, a transmission unit for transmitting the audio file and n video files to the client. Here, the generated n video files are transmitted to the client in a streaming manner and played.

In the above, a flowchart illustrating a media file division transmission method has been described. Hereinafter, a media file division transmission method and an apparatus thereof according to the present invention will be described with reference to specific embodiments with reference to the accompanying drawings. Embodiments according to the present invention are largely classified into two types. First, a method of dividing a media file into a preset size and transmitting the same to a client. Divided into methods. It demonstrates in order below.

3 is a diagram illustrating a method of dividing a media file according to a first embodiment of the present invention.

The media file 310 is divided into n video files 310 (1), 310 (2), ..., 310 (n), and each video file 310 (1), 310 (2), ..., 310 (n)) do not overlap each other. Thereafter, the divided video files 310 (1), 310 (2), ..., 310 (n) and the audio file 320 are transmitted to the client 10 by the streaming method, and the client 10 receives the received video stream. One video file 310 (1), 310 (2), ..., 310 (n) is sequentially played. The client 10 extracts frame information corresponding to the video files 310 (1), 310 (2), ..., 310 (n), respectively, and plays them sequentially from the beginning of the media file. In this case, the audio file 320 Also, the media file is played back as a whole. That is, while playing the received video file, the client 10 receives the video file in which the next frame of the first received video file is stored. Accordingly, the video files 310 (1), 310 (2), ..., 310 (n) are received by the client 10 individually, and then the playback order is determined by the frame information. The frame information is transmitted in a form recognizable by the client 10. For example, the frame information of the video files 310 (1), 310 (2), ..., 310 (n), respectively, may be stored in an xml document. Can be.

By this division method, video files can be transmitted to the client 10 individually, so that the file playback speed can be increased.

4 is a diagram illustrating a media file segmentation method according to a second preferred embodiment of the present invention.

The media file 410 is divided into n video files 410 (1), 410 (2), ..., 410 (n), and each video file 410 (1), 410 (2), ..., 410 (n)) overlap each other for a certain area. Herein, the sizes of the overlapping regions may be preset and constant, or may be different for each overlapping region. The divided video files 410 (1), 410 (2), ..., 410 (n) and the audio file 420 are transmitted to the client 10 by streaming, respectively, and then received by the client 10. Video files 410 (1), 410 (2), ..., 410 (n) are sequentially played. That is, while playing the received video file, a video file in which the next frame of the first received video file is stored is received. Therefore, the video files 410 (1), 410 (2), ..., 410 (n) are individually received by the client 10, and then the playback order is determined by the frame information.

The order in which the video files 410 (1), 410 (2), ..., 410 (n) are reproduced corresponds to the video files 410 (1), 410 (2), ..., 410 (n), respectively. It may be determined using the frame information. Therefore, even if the order of transmission to the client 10 is changed, the order of reproduction in the client 10 is constant.

In addition, when generating overlapping regions between the respective video files 410 (1), 410 (2), ..., 410 (n), the client 10 plays back based on the frame information, so that the order is based on the media file. Video files that are out of order than fast video files may be played. For example, while the video file 410 (1) is being played on the client 10 by a streaming method, the overlapped area of the video file 410 (1) has not yet been received, and the video file 410 (2) In the case where the overlapped area is received, the client 10 can play the overlapped area of the video file 410 (2) on the basis of the frame without interruption, thereby increasing the file playback speed.

The above has been described with reference to an embodiment according to a method for dividing a media file, and hereinafter, a method for dividing a media file in a flash program according to a second embodiment of the present invention will be described with reference to the drawings. The method of dividing the media file according to the first embodiment is also performed by the same principle. The program used here is the current commercial version of FlashMX Professional 2004. Macromedia's FlashMX is a web animation creation tool that implements animation, minimal file size, and streaming technology on the homepage. Since it is obvious to those skilled in the art to use the flash, a detailed description thereof will be omitted and a method of dividing a media file according to the present invention will be described. In addition, although the media file division transmission method according to the present invention will be described based on a method applied to a flash program, the present invention can be applied to other programs that can divide a file. For example, the media file division transmission method according to the present invention may be performed using an Adobe Premiere program.

5 to 7 are diagrams illustrating a process of dividing a flash file using a flash program according to an exemplary embodiment of the present invention.

First, create a new document in the FlashMX web animation authoring tool and import the content file. For convenience of explanation, a specific advertisement message is set as a content file. Then click the menu to edit the video first, and then create a video clip as many times as the preset video file. Here, the above-described video files 410 (1), 410 (2), ..., 410 (n) are represented as video clips according to the menu of the flash.

Referring to FIG. 5, there are seven newly generated video clips 510, and each of the generated video clips is set in order. First, in the first video clip, the video control bar 520 is dragged for a preset time 530. In FIG. 5, the first video clip is set as a video of about 3.071 seconds. Then follow the menu to save the settings and select to set the next video clip.

Referring to FIG. 6, a second video clip is selected from the video clip 510. The left video control bar 615 is dragged to the front of the control bar 520 of the video clip selected in FIG. 5 to create an overlapping area with the first video clip. Thereafter, the video control bar 620 on the right side is dragged for a preset time 630. In FIG. 6, a second video clip is set as a video of about 6.068 seconds. Hereinafter, the size setting for the remaining video clips is performed by the same principle as the above-described method. By the above-described method, a plurality of video clips in which overlapping regions exist are generated.

Referring to FIG. 7, a process of generating a flash movie file (* .swf extension as a playback file) is shown. Create a layer corresponding to the number of generated video clips and associate the generated video clips with each layer. Compares the video by the first and second video clips, and places the start frame of the second video at the position where the same video starts, and stores the start frame information and the end frame information of each video clip in the xml document. By performing the same operation as described above for the third, fourth and all video clips, a predetermined overlapping area is generated, and each overlapping area is stored and managed for each frame. Therefore, the xml document describes the number of video clips, stored positions (paths), video movie file types, video clip names, flash movie file names, flash movie file frame information (start frame and end frame information), and the like. Thereafter, a playback file (with an extension * .swf) is created for each video clip.

Also, the audio file is not generated with respect to the video clip but is created separately using another path. That is, the audio file is not generated by being divided into a flash file like a video clip, but separated from the entire flash file. Here, in order for the client 10 to synchronize the video file and the audio file, the total number of frames of the flash file must match the total number of frames of the audio file. Also, to make the audio file completely synchronized to the frame, make the appropriate setting (in the sync menu, enter 1 for the repeat value for the stream method).

The present invention is not limited to the above embodiments, and many variations are possible by those skilled in the art within the spirit of the present invention. For example, the method of the present invention as described above can be implemented as a program and can be read by an electronic computing device (for example, a PC) (CD-ROM, RAM, ROM, floppy disk, hard disk, magneto-optical disk, etc.). ) Can be stored.

As described above, the media file splitting transmission method and the apparatus according to the present invention can split the media file and transmit it to the client by streaming.

In addition, the method and apparatus for splitting and transmitting a media file according to the present invention may be able to continuously play the media file even if the speed received by the client is not great when the media file is divided so that the overlapped area is generated and transmitted to the client by the streaming method. It can be effective.

In addition, the media file division transmission method and apparatus according to the present invention has the effect that the media file can be transmitted at a low cost when calculating the charge in a peak method by dividing the media file and transmitting to the client by streaming method have.

Claims (17)

In the method for dividing the media file in the device for processing the media file, Generating n video files by dividing the media file including an overlapping area, The generated n video files are transmitted to the client in a streaming manner and played. The method of claim 1 Generating an audio file corresponding to the media file; And And transmitting the generated audio file to the client. In the method of dividing a media file in the media file processing apparatus, Receiving the media file from a content provider; Generating n video files by dividing the media file and the audio file separated from the media file, wherein the n video files include at least one overlapping area; And Transmitting the audio file and the n video files to a client, The generated n video files are transmitted to the client in a streaming manner to play a media file division transmission method. The method according to claim 1 or 3, And each overlapping area included in the n video files is the same size as each other. The method according to claim 1 or 3, And the client is configured to play the media file by synchronizing the video file with the audio file based on time information. The method of claim 5, And the time information is frame information corresponding to the audio file and the video file. In the method of splitting a media file in the Flash web animation authoring tool, Generating n video files corresponding to the media file; Dividing the generated video files sequentially into frames according to a preset size, wherein each video file includes an adjacent video file and an overlapping area; Generating n flash movie files from the divided video file, wherein each flash movie file fits frame information of an adjacent flash movie file and an overlapping region; And Storing the generated n flash movie files, The generated n flash movie files are transmitted to the client in a streaming manner to play a media file division transmission method. The method of claim 7, Generating an audio file corresponding to the media file; And And transmitting the generated audio file to the client. The method of claim 7, wherein And each overlapping area included in the n flash movie files is the same size as each other. The method of claim 7, wherein And the client is configured to play the media file by synchronizing the flash movie file with the audio file based on time information. The method of claim 10, And the time information is frame information corresponding to the audio file and the flash movie file. Receiving unit for receiving the media file from the content provider; A media file dividing unit for generating n video files by dividing the media file and the audio file separated from the media file; And A transmitter for transmitting the audio file and the n video files to a client, And the generated n video files are transmitted to the client in a streaming manner and played. The method of claim 12, And the n video files are generated including at least one overlapping area. The method of claim 13, And each overlapping area included in the n video files is the same size as each other. The method of claim 12, And the client is configured to play the media file by synchronizing the video file with the audio file based on time information. The method of claim 15, And the time information is frame information corresponding to the audio file and the video file. A program of instructions that can perform a method of dividing a media file is tangibly implemented, and in a recording medium that can be read by a media file processing apparatus, Generating n video files corresponding to the media file; Dividing the generated video files sequentially into frames according to a preset size, wherein each video file includes an adjacent video file and an overlapping area; Generating n flash movie files from the divided video file, wherein each flash movie file fits frame information of an adjacent flash movie file and an overlapping region; And Storing the generated n flash movie files, And a program for executing a media file division transmission method in which the generated n flash movie files are transmitted to and played by a streaming method to a client.

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