KR100874270B1 - Contents providing system with transcoding video contents - Google Patents

Abstract

A contents providing system having a transcoding function of video contents is provided to convert contents into a file format suitably for kinds of various electronic appliances. A control server(213) controls a web server, a file receiving server, a transcoding server, a storage and a file transmitting server. A setting unit sets an encoding method of image data and an encoding method of voice data with regard to at least one file format. A decoding unit divides and decodes video contents into image data and voice data.

Description

Contents Providing System With Transcoding Video Contents}

The present invention relates to a file format conversion of video content, and more particularly, a content providing system having a transcoding function of video content that can be provided to a user by converting the video content into a file format corresponding to various electronic devices. It is about.

Video content may generally include image data and audio data. Movies, music videos, and dramas are typical examples of video content.

With the recent development of data compression technology and terminal manufacturing technology, various electronic devices equipped with various codecs have been released. Electronic devices currently on the market are often equipped with different types of codecs.

In particular, portable electronic devices that reduce manufacturing cost and emphasize portability by reducing the size of devices and screens, data processing speed, and memory capacity are equipped with codecs that conform to the characteristics of each electronic device or the manufacturer's policy. Representative examples of portable electronic devices include mobile phones, portable multimedia players (PMPs), MP3 players, PlayStation Portables (PSPs), notebook computers, ultra mobile personal computers (UMPCs), and DivX players. With the development of communication networks and broadcasting networks, the utilization of portable electronic devices is increasing, and the types of portable electronic devices are also diversified.

Therefore, even if the video content of the same content, it may be impossible to play if the type of electronic device is different. In this case, the user must convert the file format of the video content according to the codec supported by the electronic device he owns so that the video content can be played and enjoyed.

According to the related art, a user accesses a content providing system such as a website providing video content using a personal computer (PC), and downloads necessary video content. The user converts the downloaded video content into a file format supported by a portable electronic device such as a mobile phone he owns. The file format conversion program for video content is generally provided by the manufacturer of the electronic device. However, the file format conversion program provided by the manufacturer of the electronic device only supports conversion to a file format that can be reproduced by the company's electronic device, and is a file format that can be reproduced by other company's electronic devices. It is not generally supported to convert. Therefore, a user using various types of electronic devices has to perform file format conversion several times using respective file format conversion programs provided by various manufacturers, which causes unnecessary problems in wasting time and effort.

The user converts the downloaded video content into a file format corresponding to the type of their electronic device, and then transfers the video content converted from the file format to the electronic device using a data cable connecting the PC and the electronic device to the video content. Can be played on electronic devices.

The present invention solves the above problems and has been proposed in accordance with recent trends and requests. The purpose is to provide a content providing system having.

It is another object of the present invention to provide a content providing system having a transcoding function of video content that can provide video content in various file formats to a user while minimizing a storage capacity of a server.

As an aspect of the present invention for achieving the above object, a content providing system having a transcoding function of video content according to the present invention, converts a file format of video content including video data and audio data. A content providing system having a trans-coding function, comprising: a web providing a web page for transmitting video content to a transmitting client terminal and providing a web page for receiving video content to a receiving client terminal ( web) server; A file receiving server for receiving video content from the transmitting client terminal; A transcoding server for converting a file format of the received video content; Storage for storing video content whose file format has been converted by the transcoding server; A file transmission server that transmits the video content stored in the storage to a receiving client terminal when receiving a download request of the video content from the receiving client terminal through the web server; And a control server controlling the web server, the file receiving server, the transcoding server, the storage, and the file sending server, wherein the transcoding server includes a plurality of types of portable electronic devices and the plurality of portable devices. A setting unit configured to set at least one file format related to video content for each of the electronic devices, and to set an encoding method of image data and an encoding method of audio data for each of the at least one file format; A decoder configured to separate video data and audio data included in the received video content and to decode the separated video data and audio data; And a content producing unit for encoding the decoded image data and the audio data according to the set encoding scheme for each of the set at least one file format, and synchronizing the encoded image data and the audio data to produce one video content. It is made, including.

The control server may be controlled to classify the video content produced by the content producing unit by the type of the set portable electronic device or by file format to store in the storage server.

When the control server receives a selection signal for at least one of a type and a file format of a portable electronic device from the receiving client terminal through the web server and is requested to download the video content, the control server stores the video stored in the storage server. The control may be performed to transmit video data corresponding to the selection of the receiving client terminal among contents to the receiving client terminal.

In the present invention, the encoding method of the image data may include an encoding standard of the image data and the quality of the image data, and the encoding method of the audio data may include an encoding standard of the audio data and the quality of the audio data. . The quality of the image data may include at least one of an image scale, a bit rate, and a frame per second (FPS). In addition, the quality of the voice data may include at least one of a bit rate and a sampling rate.

According to the content providing system having a transcoding function of video content according to the present invention as described above has the following advantages.

First, according to the present invention, the user can conveniently download and enjoy the video content corresponding to the type of their electronic device without complicated procedures. Therefore, the user does not need to perform a separate file format conversion for each electronic device used.

Second, according to the present invention, it is possible to provide video content in various file formats to the user while saving the storage space in the system for providing the video content to the maximum.

The above objects, features and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Like numbers refer to like elements throughout. In addition, when it is determined that the detailed description of the known function or configuration related to the present invention may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

1 is a view showing a content providing service environment by a content providing system having a transcoding function of video content according to an embodiment of the present invention. FIG. 2 is an example of a block diagram of the transcoding server of FIG. 1. 3 is a diagram illustrating an environment and a process of a content providing system receiving video content from a transmitting client terminal according to an embodiment of the present invention. 4 is a diagram illustrating an environment and a process of transmitting a video content to a receiving client terminal by a content providing system according to an exemplary embodiment of the present invention.

1 to 4, a content providing system having a transcoding function of video content according to an embodiment of the present invention will be described in detail.

As shown in FIG. 1, a content providing service environment by a content providing system according to an exemplary embodiment of the present invention includes a transmitting client terminal 10, a content providing system 20, a receiving client terminal 30, and Internet (40) is needed.

The transmitting client terminal 10 uploads video contents including video data and audio data to the content providing system 20 through the Internet 40. The transmitting side client terminal 10 includes all electronic devices connectable to the Internet 40.

The content providing system 20 receives video content including image data and audio data from the transmitting side client terminal 10, and transcodes the received video content to receive the client side. Provided to the terminal 30. Transcoding video content refers to converting a file format of video content. In general, video content is compressed by a codec by a specific compression standard or compression method. Transcoding of video content refers to decoding video content encoded by a specific codec in this way and encoding by a new codec.

Table 1 shows examples of video file formats and audio file formats.

Video Format MPEG, AVI, ASF, WMV, MOV, VIVO, RM, Yuv4mpeg, RoQ, OGG / OGM, 3gp Audio format MP3, OGG / OGM (Vorbis), CD Audio, XMMS

Table 2 shows examples of video codecs.

     Video Codec MPEG-1 (VCD) MPEG-2 (DVD) DivX, 3ivX, MS MPEG-4 V1, V2, Xvid Windows Media Video 7/8 (WMV1 / WMV2), Windows Media Video 9 (WMV3) Sorenson 1 (SVQ1), Sorenson3 (SVQ3) Intel Indeo (3.1, 3.2, 4.1, 5.0) MJPEG, AVID, VCR2, ASV2 VIVO 1.0, 2.0, I263, H263 FLI / FLC RealVideo 1.0, 2.0, 3.0, 4.0 HuffYUV H.264

Table 3 shows an example of the audio codec.

    Audio codec MPEG 1/2/3 Windows Media Audio 7/8/9 AC3 Dolby AAC Ogg vorbis RealAudio: DNET, Cook, Sipro, ATRAC3 QuickTime: Qualcomm, QDesign VIVO Voxware Adaptive Multi-Rate (AMR)

The video format, the audio format, the video codec, and the audio codec shown in Tables 1, 2, and 3, respectively, are all well known, and thus detailed descriptions thereof will be omitted.

The receiving client terminal 30 accesses the content providing system 20 through the Internet 40, requests the content providing system 20 to download video content, and downloads the requested video content. do. The receiving client terminal 30 includes all the electronic devices connectable to the Internet 40. As shown in FIG. 1, examples of the receiving client terminal 30 include a mobile phone 301, a portable multimedia player (PMP) 303, a play station portable (305), and a personal computer (307). Etc. The receiving client terminal 30 is not limited to the example shown in FIG. 1.

The Internet 40 refers to any network conforming to the Transmission Control Protocol / Internet Protocol (TCP / IP) communication protocol. The Internet 40 includes a wired internet, a wireless internet, and a wired / wireless integrated internet network. The Internet 40 may also include a portable Internet such as Wireless BROadband internet (WIBRO) and World Interoperability for Microwave Access (WiMAX) as a wireless Internet.

The content providing system 20 includes a web server 201, a user DB server 203, a file receiving server 205, a transcoding server 207, a storage 209, a file. It may include a transmission server 211 and a control server 213.

The web server 201 is a server for providing various data and images so as to communicate through a web browser of the transmitting client terminal 10 and the receiving client terminal 30. The web server 201 may provide a graphical user interface to the transmitting client terminal 10 and the receiving client terminal 30. The user of the transmitting side client terminal 10 and the user of the receiving side client terminal 30 transmit video content to the content providing system 20 via the graphical user interface provided by the web server 201. Various commands for uploading or downloading from the content providing system 20 may be input.

The user DB server 203 is a server that stores a database including information of the user of the transmitting client terminal 10 and the user of the receiving client terminal 30.

The file receiving server 205 is a server for receiving video content from the transmitting-side client terminal 10.

The transcoding server 207 is a server for transcoding video content received via the file receiving server 205. The transcoding server 207 may include a content producing unit 420 including a setting unit 400, a decoding unit 410, an encoding unit 421, and a synchronization unit 423.

The setting unit 400 sets a type of a plurality of portable electronic devices and at least one file format relating to video content for each of the plurality of portable electronic devices, and encodes image data for each of the file formats. And encoding method of voice data. The setting unit 400 may store the related information and the encoding algorithm regarding the type, the file format, the encoding method of the image data, and the encoding method of the audio data. For example, the setting unit 400 may store the file formats and the codec shown in Tables 1 to 3.

The decoding unit 410 separates video data and audio data included in video content received through the file receiving server 205 and decodes the separated video data and audio data, respectively.

The content producing unit 420 encodes the video data and the audio data decoded by the decoding unit 410 by the encoding unit 421 according to the setting contents set by the setting unit 400. The video data and audio data are synchronized by the synchronization unit 423 to produce new video content.

The storage 209 is a server for storing image data, audio data, and video content transcoded by the transcoding server 207. The storage 209 may include a file server 600 that stores image data, audio data, and video content itself, and a content information DB 610 that stores information about data stored in the file server. .

When there is a download request for a specific video content from the receiving client terminal 30, the file transmitting server 211 responds to the request of the receiving client terminal 30 among the video contents stored in the storage 209. A server for transmitting the corresponding video content to the receiving client terminal 30.

The control server 213 is a server that controls the components constituting the content providing system 20 according to an embodiment of the present invention, and controls the overall operation of the content providing system 20. The control server 213 may include a traffic monitoring and allocation server 500, a file classification / transcoding determiner 510, and a transcoding manager 520.

The traffic monitoring and allocating server 500 monitors the traffic of the file receiving server 205 and the file sending server 211, and responds to server connection queries of the transmitting and receiving client terminals 10 and 30. Server for allocating servers. In FIG. 4, a server information management server 215 for processing a server connection query of the receiving client terminal 30 is provided separately for convenience of description. The server information management server 215 may be included in the control server 213.

The file classification / transcoding determiner 510 analyzes a file format of video content received from the transmitting client terminal 10 through the file receiving server 205 and transcodes the received video content. Determine whether this is necessary. If the determination as to whether transcoding is necessary or not transcoding is required, the received video content is stored directly in the storage 209. If transcoding is necessary as a result of determining whether the transcoding is necessary, the transcoding manager 520 is called and the received video content is transcoded by the transcoding server 207.

The transcoding management unit 520 outputs various control signals necessary for the operation of the transcoding server 207 and supervises all operations related to transcoding of video content according to an embodiment of the present invention.

Referring to FIG. 3, a process of uploading video content to the content providing system 20 by the transmitting client terminal 10 and an operation of the content providing system 20 according to an embodiment of the present invention will be described in detail. Let's go.

The user of the transmitting-side client terminal 10 connects to the content providing system 20 and transmits specific video content to the content providing system 20 through input means provided in the transmitting-side client terminal 10. Input basic information necessary for transmission and attach the specific video content [S301]. Examples of basic information necessary for transmitting the specific video content include titles, images, other texts, etc. of the specific video content. In this case, the user of the transmitting side client terminal 10 may have to go through the login process or the user authentication process after accessing the content providing system 20.

The transmitting-side client terminal 10 transmits the input basic data about the specific video content to the content information DB 610 included in the storage 209 of the content providing system 20 [S303] ]. When the basic data is input from the transmitting-side client terminal 10, the content providing system 20 issues a unique identifier (ID) for the specific video content [S305].

In response to receiving the unique identifier, the transmitting side client terminal 10 executes a client application and transmits the unique identifier to the client application [S307].

The client application queries the traffic monitoring and allocation server 500 of the content providing system 20 for a file receiving server 205 accessible to upload the specific video content [S309]. The traffic monitoring and allocating server 500 allocates an accessible file receiving server 205 according to the query of the client application [S311]. The client application uploads the specific video content to the assigned file receiving server 205 [S313].

The file receiving server 205 delivers the specific video content transmitted from the transmitting side client terminal 10 to the file server 600 included in the storage 209 [S315], and the specific video content. Information related to the data is transmitted to the file classification / transcoding determination unit 510 [S317]. Examples of the related information of the specific video content include file extension, file format, presence or absence of audio data, etc. of the specific video content.

The file classification / transcoding determination unit 510 determines whether it is necessary to transcode the specific video content by using the related information of the received specific video content. The file classification / transcoding determination unit 510 may use setting information of the setting unit 400 included in the transcoding server 207. For example, when the file extension of the specific video content is "AVI" and the file extensions set by the setting unit 400 are "AVI" and "MOV", the specific video content having the extension of "AVI" is " Transcoding to have an extension of MOV ".

As a result of the determination, when there is no need to transcode the specific video content, the content information DB 610 is updated by analyzing / classifying the type of the specific video content [S319].

As a result of the determination, when it is necessary to transcode the specific video content, related information is transmitted to the transcoding manager 520 [S321]. The transcoding manager 520 controls the transcoding server 207 so that the specific video content is transcoded. In this case, the transcoding server 207 requests the transcoding management unit 520 for file information of the specific video content [S323], and imports the original file stored in the file server 600 [S325]. Transcoding the original file according to the setting of the setting unit 400 is performed. When transcoding is completed, the transcoded video content is transferred back to the file server 600 [S327]. The transcoding server 209 requests the transcoding management unit 520 to update file information [S329]. The transcoding manager 520 updates the file information of the content information DB 610 according to the information update request.

Referring to FIG. 4, a process of downloading video content from the content providing system 20 by the receiving client terminal 30 and an operation of the content providing system 20 according to an embodiment of the present invention will be described in detail. Let's do it.

The receiving client terminal 30 queries the user DB server 203 for member authority for user authentication [S401], and receives a member authority response to the member authority query [S403]. In this case, the receiving client terminal 30 may request to download a specific video content. Meanwhile, the receiving client terminal 30 may perform a cash charging necessary for downloading the video content (S405: cache charging request, S407: cache charging completed).

When the user authentication is completed by the step S401 and the step S403, the receiving client terminal 30 executes a client application [S409]. The client application then inquires of the server information management server 215 of the accessible file transmission server 211 for downloading of the video content [S411], and after being assigned the accessible file transmission server 211 [S413]. In step S415, the user accesses the assigned file transmission server 211.

The file transmission server 211 transfers the request information of the receiving client terminal 30 to the server information management server 215 [S417]. The server information management server 215 updates the connection information of the receiving client terminal 30 [S419]. In response to a request of the receiving client terminal 30, the specific video content stored in the file server 600 is transferred to the file transmitting server 211 [S421]. The file transmission server 211 transmits the specific video content received from the file server 600 to the receiving client terminal 30 [S423].

An example of uploading and downloading video content has been described above. Hereinafter, according to embodiments of the present invention, the video content transmitted by the transmitting client terminal 10 is transcoded in the content providing system 20, and for transcoding the content providing system 20. The operation will be described in detail.

5 is a flowchart of a method of transcoding video content according to an embodiment of the present invention. A method of transcoding video content and an operation of the content providing system 20 according to an embodiment of the present invention will be described in detail with reference to FIG. 5. The method of transcoding video content according to an embodiment of the present invention may be executed in the content providing system 20.

First, a plurality of types of portable electronic devices and at least one file format related to video content are set for each of the plurality of portable electronic devices, and an encoding method of video data and encoding of audio data are set for each of the set file formats. The method is set [S500]. The setting information of the step S500 may be stored in the setting unit 400.

Generally, the types of file formats that can be played by portable electronic devices are different, and even if specific video contents have the same file format, they can be played by portable electronic devices according to the video codec and the audio codec. May be different. Table 4 is a diagram showing an example of a file format, a video codec, and an audio codec that can be played for each portable electronic device.

Portable electronic devices File Format / Video Codec / Audio Codec  PSP Format MPEG-4 Video Codec H.264, 480 * 272, 500Kbps, 30fps Audio codec AAC LC, 16bits, 128Kbps, 48KHz  iPod Video Format MPEG-4 Video Codec H.264, 320 * 240, 351 Kbps, 30 fps Audio codec AAC LC, 16bits, 96Kbps, 44KHz  Cellular phone Format MPEG-4 Video Codec MPEG-4 Visual, 320 * 240, 400Kbps, 15fps Audio codec AAC LC, 16bits, 128Kbps, 48KHz  MP4 Player A Format AVI Video Codec XviD, 320 * 240, 400Kbps, 30fps Audio codec MPEG-1 Audio layer 2, 16bits, 128Kbps, 44KHz  MP4 Player B Format AVI Video Codec XviD, 320 * 240, 400Kbps, 24fps Audio codec MPEG-1 Audio layer 2, 16bits, 128Kbps, 44KHz

The setting information of Table 4 is shown for convenience of description, and each portable electronic device may not necessarily reproduce only video content according to Table 4. In addition, in Table 4, one file format, one video codec, and one audio codec are set for one portable electronic device, but in fact, a plurality of file formats may be set for one portable electronic device. In addition, a combination of a plurality of video codecs and audio codecs may be set for one file format.

The encoding method of the image data may include an encoding standard (CODEC) of the image data and the quality of the image data, and the encoding method of the voice data may include an encoding standard (CODEC) of the voice data and the quality of the audio data.

Examples of the quality of the image data include image scale, bitrate, and frame per second (FPS). Examples of the quality of the voice data include resolution, bitrate, and sampling rate.

In Table 4, "PSP" will be described as an example. The PSP is optimized for playing video content whose file format is MPEG-4. In addition, H.264 is used as the video codec, and the scale can be set to 480 * 272, the bitrate is 500Kbps, and the frame per second (FPS) is 30fps. The audio codec can be set to AAC LC with a resolution of 16 bits, a bit rate of 128 Kbps, and a sampling rate of 48 KHz.

In addition, video content is received from the transmitting client terminal 10 [S510]. The transmitting client terminal 10 may upload the video content to the content providing system 20 through the above-described uploading process.

The file format of the received video content, the video codec and the audio codec are analyzed [S520] to separate the video data and the audio data included in the received video content, and to decode the separated video data and the audio data. [S530].

The decoded video data and audio data are encoded according to the settings performed in step S500, and new video content is produced by synchronizing the encoded video data and audio data [S540]. In this case, in step S540, for each of the file formats set in step S500, encoding and synchronization are performed according to the encoding method of the set image data and the encoding method of voice data.

For example, when the settings as shown in Table 4 are made in step S500, the separated image data and the audio data are encoded and synchronized according to the setting for each portable electronic device of Table 4 by step S540. do. Therefore, when the operation S540 is completed, a total of five video contents having different combinations of file format / video codec / audio codec are produced.

The video content produced by step S540 is stored in the storage 209 [S550]. In this case, the produced video content may be stored for each type of portable electronic device set in step S500 or for each type and file format of the portable electronic device set in step S500.

In addition, the receiver receives a selection signal for at least one of a type and a file format of the portable electronic device from the client terminal 30, and is requested to download video data [S560]. The user of the receiving client terminal 30 may access the content providing system to perform user authentication and then request to download specific video content. In this case, the user of the receiving client terminal 30 may select or input a portable electronic device for playing the specific video content requesting the download. In addition, the user of the receiving client terminal 30 may select or input at least one of a file format, a video codec, and an audio codec of a specific video content requesting the download.

According to the selection and request of the receiving client terminal 30 in step S560, the video content corresponding to the selection of the receiving client terminal 30 is selected from among a plurality of video contents stored in the storage 209. It transmits to the receiving client terminal 30 [S570].

For example, assume that the user of the receiving client terminal 30 selects the portable electronic device as “iPod Video” while requesting the download of specific video content in step S560. At this time, by the step S570, video content corresponding to "iPod Video" of the plurality of video contents stored in the storage 209 is transmitted to the receiving client terminal 30.

6 is a flowchart of a method of transcoding video content according to another embodiment of the present invention. A method of transcoding video content and an operation of the content providing system 20 according to another embodiment of the present invention will be described in detail with reference to FIG. 6. A method of transcoding video content according to another embodiment of the present invention may be executed in the content providing system 20.

Steps S600 to S630 of FIG. 6 are the same as steps S500 to S530 of FIG. 5, and thus, detailed descriptions thereof will be omitted.

According to the setting performed in step S600, the video data and the audio data decoded in step S630 are respectively encoded according to the respective encoding schemes set for each of the file formats set in step S600, and the storage 209. ) [S640].

In this case, if there is an encoding method that is set more than once among the encoding methods that are set in step S600, the encoding method that is set more than once may be encoded and stored only once. For example, assume that the video content "AAA" received from the transmitting-side client terminal 10 is composed of video data having the format of "Video D" and audio data having the format of "Audio E". The video data encoding method of "Video F" and the audio data encoding method of "Audio G" are set for the portable electronic device "X", and the video data encoding method of "Video F" for the portable electronic device "Y". Assume that the audio data encoding method of and "Audio H" are set. At this time, the video data of the "Video D" included in the video content "AAA" is encoded only once into the video data of "Video F".

Then, a download request for a specific video content is received from the receiving client terminal 30 [S650]. The step S650 corresponds to the step S560 of FIG. 5. That is, at least one of a type of portable electronic device, a file format of the specific video content, a video codec, and an audio codec to play the specific video content is selected while being requested to download the specific video content from the receiving client terminal 30. Can be input or input.

In response to the selection and the request of the receiving client terminal 30 performed in step S650, the video data and the voice corresponding to the selection of the receiving client 30 among the image data and the audio data stored in step S640. Video data is produced by synchronizing the data [S660], and the produced video content is transmitted to the receiving client terminal 30 [S670].

The biggest difference between the transcoding method of the video content described with reference to FIG. 5 and the transcoding method of the video content described with reference to FIG. 6 is a point in time at which new video content is produced by synchronizing the transcoded video data and audio data. to be.

That is, according to the transcoding method of FIG. 5, all video contents are produced and stored according to the setting information set in step S500, and when a download request of the receiving client terminal 30 is received, among the stored video contents. The video content corresponding to the request is transmitted.

However, according to the transcoding method of FIG. 6, when the video data and the audio data are transcoded and stored in the form of a file according to the setting information set in step S600, when a download request of the receiving client terminal 30 is received, A video content is produced and transmitted by synchronizing video data and audio data corresponding to the request among the stored video data and audio data.

According to the transcoding method of FIG. 5, a plurality of final video contents corresponding to the setting information of the setting unit 400 are stored in the storage 209. Accordingly, although the response speed of the download request of the receiving client terminal 30 is fast, a plurality of video contents having the same contents are stored, and thus the storage capacity of the storage 209 may be consumed.

On the contrary, according to the transcoding method of FIG. 6, if there is a duplicate setting among the file format / video codec / audio codec set for the plurality of portable electronic devices, the overlapping setting is performed only once. Therefore, the processing speed and the storage capacity can be saved. However, since the final video content is produced by synchronizing the video data and the audio data when the receiving client terminal 30 downloads, the receiving client terminal 30 is compared with the transcoding method of FIG. 5. ), The time from download request to download will increase slightly.

For example, in steps S500 and S600, ten portable electronic devices are set, one file format is set for each of the ten portable electronic devices, and one file format is set for each of the file formats. Assume that the video data encoding method and the one audio data encoding method are set. Considering all 10 portable electronic devices, it is assumed that a total of 5 types of image data encoding methods and 3 types of voice data encoding methods are set.

According to the transcoding method of video contents according to FIG. 5, up to 10 new video contents are produced and stored by transcoding the video contents transmitted from the transmitting client terminal 10.

According to the transcoding method of video content according to FIG. 6, a total of five new video data and three new audio data are produced and stored. Among them, video data and audio data corresponding to a request of the receiving client terminal 30 are muxed and transmitted to the receiving client terminal 30. In general, the time required for synchronizing or muxing video data and audio data is within a few seconds.

The above-described method for transcoding video content according to the present invention may be provided by recording on a computer-readable recording medium as a program for executing on a computer.

The method of transcoding video content according to the present invention can be implemented through software. When implemented in software, the constituent means of the present invention are code segments that perform the necessary work. The program or code segments may be stored on a processor readable medium or transmitted by a computer data signal coupled with a carrier on a transmission medium or network.

Computer-readable recording media include all kinds of recording devices that store data that can be read by a computer system. Examples of computer-readable recording devices include ROM, RAM, CD-ROM, DVD ± ROM, DVD-RAM, magnetic tape, floppy disks, hard disks, optical data storage devices, and the like. The computer readable recording medium can also be distributed over network coupled computer devices so that the computer readable code is stored and executed in a distributed fashion.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by the drawings.

1 is a view showing a content providing service environment by a content providing system having a transcoding function of video content according to an embodiment of the present invention.

FIG. 2 is an example of a block diagram of the transcoding server of FIG. 1.

3 is a diagram illustrating an environment and a process of a content providing system receiving video content from a transmitting client terminal according to an embodiment of the present invention.

4 is a diagram illustrating an environment and a process of transmitting a video content to a receiving client terminal by a content providing system according to an exemplary embodiment of the present invention.

5 is a flowchart of a method of transcoding video content according to an embodiment of the present invention.

6 is a flowchart of a method of transcoding video content according to another embodiment of the present invention.

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

10: transmitting side client terminal 20: content providing system

201: web server 203: user DB server

205: file receiving server 207: transcoding server

209: Storage 211: File Send Server

213: control server 30: receiving client terminal

40: internet

Claims (6)

A content providing system having a trans-coding function for converting a file format of video content including video data and audio data, A web server for providing a web page for transmitting video content to a transmitting client terminal and a web page for receiving video content for a receiving client terminal; A file receiving server for receiving video content from the transmitting client terminal; A transcoding server for converting a file format of the received video content; Storage for storing video content whose file format has been converted by the transcoding server; A file transmission server for transmitting the video content stored in the storage to the receiving client terminal when receiving the download request of the video content from the receiving client terminal through the web server; And A control server controlling the web server, the file receiving server, the transcoding server, the storage, and the file sending server. Including, The transcoding server, A type of a plurality of portable electronic devices, at least one file format relating to video content for each of the plurality of portable electronic devices, and an encoding scheme and an audio of image data for each of the at least one file format A setting unit for setting an encoding method of data; A decoder configured to separate video data and audio data included in the received video content and to decode the separated video data and audio data; And For each of the set at least one file format, a content producing unit for encoding the decoded video data and audio data according to the set encoding scheme, and synchronizing the encoded video data and audio data to produce a video content Include, The control server, The video content produced by the content production unit is controlled to be stored in the storage server by classifying by the type of the set portable electronic device or by file format, and from the receiving client terminal through the web server. When receiving a selection signal for at least one of a type and a file format and requesting to download the video content, the receiving client receives video data corresponding to the selection of the receiving client terminal among the video contents stored in the storage server. Characterized in that the control to transmit to the terminal A content providing system having a transcoding function of video content. delete delete The method of claim 1, The encoding method of the video data includes an encoding standard of the video data and the quality of the image data, and the encoding method of the audio data includes an encoding standard of the audio data and the quality of the audio data. Content provision system having a function. The method of claim 4, wherein the quality of the video data is And at least one of an image scale, a bit rate, and a frame per second (FPS). The method of claim 4, wherein the quality of the voice data is A content providing system having a transcoding function of video content, characterized in that it comprises at least one of a bitrate and a sampling rate.

Images