KR101973724B1 - Method and apparatus for providing adaptively video service - Google Patents

Abstract

A video service apparatus and method are disclosed.
The adaptive streaming technology has to perform a conversion operation such as bit rate change, transcoding, and the like for a large number of video contents, and therefore it is not easy to manage content from the viewpoint of the contents provider (CP). As a result, the efforts of the content provider (CP) for the adaptive streaming service are doubled, the portion to be considered in terms of cost and operational efficiency becomes large, and ultimately, a problem that the quality video service can not be provided to the client . In the present invention, in adaptively managing video content between a client and a content provider (CP), the quality of video content is determined based on network load information or available bandwidth, By providing adaptive streaming video content to the client by adapting metadata between the client and the content provider (CP), it is possible to increase the quality of experience (QoE) We propose a video service technology that can efficiently utilize wireless resources through the Internet.

Description

METHOD AND APPARATUS FOR PROVIDING ADAPTIVELY VIDEO SERVICE [0002]

The present invention relates to a moving picture service, and more particularly, to a moving picture service apparatus and a moving picture service method suitable for adaptively providing moving picture contents according to a moving picture traffic attribute and terminal apparatus information.

Currently, most content providers (CPs) provide video services using the HPD (Http Progressive Download) method. The HPD method is a service method capable of concurrently playing back video data while downloading moving image data. Since the video data of a fixed bit rate is transmitted, no network state or client side characteristics are considered.

In view of this, in the recent video service environment, adaptive streaming (AS) technology utilizing both advantages of the download method and advantages of the streaming method is being provided. The adaptive streaming technology is a technology in which a content provider (CP) provides a buffering or seamless video viewing environment by dynamically changing a bit rate of a moving picture according to a terminal characteristic and a network load state. The adaptive streaming technology includes a hypertext transfer protocol (http) Based web standard protocol is applied, it is advantageous in that it is more efficient than a general streaming method.

Nevertheless, the adaptive streaming technology has to perform a conversion operation such as bit rate change, transcoding, and the like for a large number of video contents, and therefore it is not easy to manage the contents in view of the content provider (CP) .

As a result, the efforts of the content provider (CP) for the adaptive streaming service are doubled, the portion to be considered in terms of cost and operational efficiency becomes large, and ultimately, a problem that the quality video service can not be provided to the client .

Korean Patent Publication No. 10-2010-0052088, published on May 19, 2010

SUMMARY OF THE INVENTION The present invention has been made in view of the conventional technical limitations and it is an object of the present invention to adaptively manage (convert and store) video contents between a client and a content provider (CP) We propose a video service technology that can determine the quality.

The present invention also provides a method and apparatus for adaptively managing moving picture contents between a client and a contents provider (CP) by deriving an available bandwidth of a network connected to the client based on a data transmission rate and environment provided to the client We propose a video service technology that can determine the quality of video contents.

In addition, the present invention proposes a video service technology capable of modifying metadata of video content according to terminal information and network load information in adaptively managing video content between a client and a content provider (CP) do.

According to an exemplary embodiment of the present invention, there is provided an information processing apparatus including a moving picture conversion unit for adaptively converting and storing moving picture contents based on moving picture service response information corresponding to moving picture service request information from a client terminal apparatus, Determining a moving picture quality of the moving picture content according to network information about a network to which the apparatus is connected and client information about the client terminal apparatus and determining a moving picture quality of a moving picture corresponding to the quality among the moving picture contents adaptively converted and stored by the moving picture conversion unit And a service management unit for transmitting the content to the client terminal device.

Here, the network information may include at least one of load information on the network or bandwidth available to the network.

In addition, the moving picture quality of the moving picture content may include a bit-rate of the moving picture content.

In addition, the service management unit may transmit the requested video quality video content from the client terminal unit when the video quality requested by the client terminal unit is matched with the video quality determined by the service management unit.

In addition, the service management unit may transmit the moving image quality of the moving image quality determined by the service management unit when the moving image quality requested from the client terminal apparatus is not matched with the moving image quality determined by the service management unit.

In addition, the quality of the moving image content may include metadata of the moving image content.

In addition, the service management unit may modify the metadata.

The service management unit may transmit the video content stored by the video conversion unit to the client terminal device when the analysis result of the client information and the network information satisfies the requested video quality from the client terminal unit .

In addition, the service management unit may store the video content of the metadata modified by the service management unit in the client terminal apparatus when the analysis result of the client information and the network information does not satisfy the video quality requested from the client terminal apparatus, Lt; / RTI >

The modified metadata may be metadata in which index information corresponding to an arbitrary bit rate is deleted from metadata of the moving image content.

According to another aspect of the present invention, there is provided a method for transmitting video content, the method comprising: transmitting a first video content requested by a client terminal device in an adaptive streaming manner; The method comprising the steps of: analyzing client information of a device; acquiring network load information through a network load sensing device; and determining quality of the second video content based on the client information and the network load information It is possible to provide a moving picture service method of the moving picture service apparatus.

According to an exemplary embodiment of the present invention, there is provided a method of controlling a bandwidth of a client terminal, the method comprising: transmitting a first video content requested by a client terminal device in an adaptive streaming manner; analyzing an available bandwidth of the network connected to the client terminal; Analyzing client information of the client terminal apparatus when a second video content is requested from the client terminal apparatus; and determining quality of the second video content based on the client information and the available bandwidth It is possible to provide a moving picture service method of the moving picture service apparatus.

Here, the first video content and the second video content may have different bit rates.

According to another aspect of the present invention, there is provided a method for transmitting a video content requested by a client terminal device in an adaptive streaming manner, the method comprising the steps of: analyzing client information of the client terminal device; The method comprising the steps of: obtaining load information; and modifying the metadata of the video content based on the client information and the network load information.

Here, the step of modifying the metadata of the moving picture content may include a step of deleting the index information corresponding to an arbitrary bit rate in the meta data of the moving picture content.

According to the present invention, in adaptively managing video content between a client and a content provider (CP), quality of video content is determined based on terminal information, network load information, or available bandwidth, or terminal information or network load information It is possible to provide the client with the video content of the adaptive streaming method that is adaptively managed between the client and the content provider (CP) by modifying the metadata of the video content. Accordingly, it is possible to enhance the quality of experience (QoE) of the client and effectively utilize the radio resources by reducing the traffic.

1 is a block diagram of a whole network including a video service apparatus according to an embodiment of the present invention;
2 is a detailed block diagram of a moving picture service apparatus according to an embodiment of the present invention;
3 is a diagram illustrating an exemplary feature of a motion picture converting unit in a moving picture service apparatus according to an embodiment of the present invention;
FIG. 4 is a flowchart illustrating a method of determining a quality of a moving picture content based on network load information, for example, according to an embodiment of the present invention.
FIG. 5 is a flowchart illustrating a method of determining a quality of video content based on, for example, a bandwidth available on a network, according to an exemplary embodiment of the present invention.
FIG. 6 is a flowchart illustrating an example of a process of modifying metadata of a video content based on network load information, for example, according to an embodiment of the present invention.

Brief Description of the Drawings The advantages and features of the present invention, and the manner in which it may be achieved, will become apparent with reference to the embodiments described in detail with reference to the accompanying drawings. It should be noted, however, that the present invention is not limited to the embodiments described below, but may be implemented in various other forms. It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. It is just defined. Like numbers refer to like elements throughout.

In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The following terms are defined in consideration of the functions in the embodiments of the present invention, which may vary depending on the intention or custom of the user or operator. Therefore, the definition should be based on the contents throughout this specification.

Before describing the embodiments of the present invention, in adaptively managing (converting and storing) moving picture contents between a client and a contents provider (CP), the network load information or the available bandwidth The quality of the video contents is determined or the metadata of the video contents is modified to provide the client with the adaptive streaming video content adaptively managed between the client and the content provider (CP) (Quality of Experience), and to utilize radio resources efficiently through traffic reduction. From the technical idea, the object of the present invention can be easily achieved.

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

FIG. 1 is a block diagram illustrating an overall network configuration including a video service apparatus according to an embodiment of the present invention. The client terminal apparatus 100 includes a client terminal apparatus 100, a network 10, a video service apparatus 200, , A network load sensing device 400, and the like.

As shown in FIG. 1, the client terminal apparatus group 100 may include a plurality of client terminal apparatuses 100/1 to 100 / N. According to the present embodiment, the client terminal apparatus group 100 may include an adaptive streaming- A plurality of types of client terminal devices such as a smart phone, a smart pad, a tablet PC, and the like may be included as a group of devices for providing the service.

The client terminal device group 100 may provide a broadband wireless communication service to a client by interfacing with a network 10, which will be described later, through a broadband wireless connection. At this time, the broadband wireless communication service is not limited to the third generation wireless communication technology of WCDMA (Wideband Code Division Multiple Access), but also the fourth generation or more wireless communication technology of LTE (Long Term Evolution) / EPC (Evolved Packet Core) Lt; RTI ID = 0.0 > wireless < / RTI >

In addition, the client terminal device group 100 may provide a short-range wireless communication service to a subscriber by interfacing with a network 10, which will be described later, by a short-range wireless connection. The short-range wireless communication service may be a Wi-Fi communication service. The client terminal group 100 may be connected to the video service apparatus 200 through a network 10 providing short- Lt; / RTI >

In particular, any of the client terminal apparatuses 100/1 of the client terminal apparatus group 100, for example, the client terminal apparatus 1 100/1 can transmit the video content (for example, a high bit-rate ) Can be requested to the video service apparatus 200 and the video content whose quality is determined according to the load information or available bandwidth of the network 10 from the video service apparatus 200 can be serviced. For example, when the video quality (bit rate) requested by the client terminal device 1 (100/1) is matched with the video quality determined by the video service apparatus 200, the video quality requested by the client terminal device 1 (100/1) If the video quality requested by the client terminal device 1 (100/1) is not matched with the video quality determined by the video service apparatus 200, the video quality of the video quality determined by the video service apparatus 200 Lt; / RTI >

At this time, in determining the quality of the video content, client information, client terminal information, video policy information, metadata, and the like may be considered in addition to the network load information and the available bandwidth. Can be serviced to the device 1 (100/1).

In addition, the client terminal apparatus 1 (100/1) can adaptively reproduce arbitrary moving picture contents by applying an adaptive streaming technique executable in the terminal apparatus. For example, the adaptive streaming technique may be applied to any one of HLS (Http Live Streaming), SS (Smooth Streaming), and HDS (Http Dynamic Streaming) The adaptive streaming technique of FIG.

The network 10 may include a broadband wireless communication network or a local area wireless communication network and may connect the client terminal group 100 and the video service apparatus 200 to provide a moving picture service, A service for providing an adaptive streaming video content adaptively managed between the terminal device 1 100/1 and the content providing device 300 to the client terminal device 1 100/1, A service for providing the client terminal device 1 100/1 with the determined quality in consideration of the information, the client terminal 1 100/1 with the quality determined by considering the client information and the available bandwidth Service, the client information and the network load information, And a service for providing the client terminal device 1 (100/1) with an image content.

Here, the broadband wireless communication network is involved in call setup and resource allocation of the client terminal apparatus group 100. Although not shown in the drawing, a wireless network It will be understood by those skilled in the art that the present invention can be practiced without departing from the spirit and scope of the present invention. Such a broadband wireless communication network plays a role of guaranteeing the mobility of the client terminal device group 100 and can perform a function of managing handover and radio resources. The broadband wireless communication network may comprise a base station and a base station controller and may support both synchronous and asynchronous.

The short-range wireless communication network in the network 10 provides a short-range communication environment between the client terminal device group 100 and the video service apparatus 200 and can include a wireless communication environment such as Wi-Fi have.

The moving picture service apparatus 200 according to the embodiment of the present invention transmits an adaptive streaming video content adaptively managed between the client terminal apparatus 1 100/1 and the content providing apparatus 300 to the client terminal apparatus 1 Determines the video quality considering the client information and the load information of the network 10 between the client terminal device 1 100/1 and the content providing device 300, 100/1) and the content providing apparatus 300 may determine the video quality considering the available bandwidth of the network 10. The specific configuration and functions of the moving picture service apparatus 200 will be described in more detail below.

The content providing apparatus 300 may include a server for providing various contents, for example, video contents, to the client terminal apparatus group 100 through the network 10. [ Although FIG. 1 shows one content providing apparatus 300 connected to the network 10, it is to be understood that only a few content providing apparatuses may be provided according to need, It will be easy to know if you are knowledgeable.

The network load sensing apparatus 400 can recognize the state of the network 10, generate network load information according to the state of the network 10, and provide the network load information to the video service apparatus 200. The details of the configuration of the network load sensing apparatus 400 will be readily apparent to those skilled in the art, and a detailed description of the configuration will be omitted.

FIG. 2 is a block diagram illustrating a video service apparatus 200 according to an embodiment of the present invention. The service management unit 202, the traffic attribute analysis unit 204, the moving image conversion unit 206, An information analysis unit 208, a service type determination unit 210, a client DB (Data Base) 212, a content DB 214, and the like.

2, the service management unit 202 analyzes client information between the client terminal device 1 100/1 and the content providing device 300 according to an embodiment of the present invention, 400, determines the moving picture quality of the moving picture content based on the client information and the network load information, and determines the moving picture quality of the moving picture contents adaptively converted and stored by the moving picture conversion unit 206 And to transmit the determined moving image quality video content to the client terminal device 1 (100/1). For example, when a high bit-rate video content is requested from the client terminal device 1 (100/1), the service management unit 202 determines the quality of the video content according to the load information or the available bandwidth of the network 10 And can transmit the determined video content to the client terminal device 1 1001 /. For example, when the video quality (bit rate) requested by the client terminal device 1 (100/1) is matched with the video quality determined by the video service apparatus 200, the video quality requested by the client terminal device 1 (100/1) If the video quality requested by the client terminal device 1 (100/1) does not match the video quality determined by the video service apparatus 200, the video content of the video quality determined by the video service apparatus 200 may be transmitted Lt; / RTI > In the embodiment of the present invention, in the case of providing the moving image contents corresponding to the determined moving image quality, the moving image contents are converted and stored in advance in the moving image converting unit 206. However, It should be noted that it is possible to determine in real time and to convert the video content in real time with the determined video quality.

The service management unit 202 analyzes the client information between the client terminal apparatus 1 100/1 and the content providing apparatus 300, analyzes the load information of the network 10, And may transmit the video content to which the modified metadata is applied to the client terminal device 1 (100/1).

The service management unit 202 analyzes the client information between the client terminal device 1 100/1 and the content providing device 300, analyzes the available bandwidth on the network 10, , And transmits the determined moving picture quality to the client terminal device 1 (100/1).

In addition, the service management unit 202 includes the traffic attribute analysis unit 204, the moving picture conversion unit 206, the terminal information analysis unit 208, the service type determination unit 210, the client DB (DataBase) 212, The content DB 214 and the like can be managed as a whole and the video service request information, the video service response information, the adaptive streaming video content, and the like are transmitted between the client terminal device group 100 and the content providing device 300 Can play a role.

For example, when there is a video service request from any client terminal device (e.g., client terminal device 1 100/1), the service management module 202 delivers the request information to the content providing device 300, When there is a moving image service response from the device 300, the corresponding response information is transmitted to the client terminal device 1 100/1, and the adaptive streaming service type determined by the service type determination unit 210, which will be described later, And can transmit the streaming video content to the client terminal device 1 (100/1). The adaptive streaming service type may include a service type of either HLS or SS or HDS, as described above. At this time, the moving picture service request information from the client terminal unit 1 (100/1) may include information on the client terminal unit 1 100/1, for example, user information, terminal performance information, The moving picture service response information provided from the content providing apparatus 300 may include information on any moving picture content, for example, a moving picture capacity, a reproduction time, a bit rate, and the like.

The traffic attribute analysis unit 204 may analyze the attribute of the moving image traffic provided from the content providing apparatus 300. [ For example, it is possible to analyze whether the corresponding video content is a popular video or a frequently viewed video.

The moving image converting unit 206 may convert the moving image content provided from the content providing apparatus 300 and temporarily caches (stores) the converted moving image content in the content DB 214. [ Here, the video content conversion may include a process of transcoding the bit rate of the video content, a process of chunking the video content by dividing the video content by the image quality (per bit rate) Etc., and the video content converted by the video conversion unit 206 may be

FIG. 3 is a diagram for explaining a feature of the motion picture conversion unit 206 as an example.

As shown in FIG. 3, in the case of 40-second video content encoded at 1 Mbps, it is possible to divide a 1-Mbps video content into four blocks for 10 seconds each and then generate a video chunk, May be transcoded at 500 Kbps and divided into 4 blocks of 10 seconds each, and then one video chunk may be generated. In the generated one video chunk, each block can be adaptively selected as needed.

The generated video chunks may be stored in the content DB 214 via a caching process and may be adapted by the service management unit 202 according to the state of the client terminal apparatus 1 100/1 or the state of the network 10 Video content can be selected and provided to the client terminal device 1 (100/1). For example, if the client terminal unit 1 100/1 is a smart pad, the 1Mbps video content can be selected and transmitted. If the client terminal unit 1 100/1 is a smartphone, Lt; / RTI > Of course, when the client terminal device 1 100/1 is a smart pad, it is necessary to note that if the reception state of the network 10 is suddenly poor, the 1Mbps video content may be transmitted and then changed to the 500Kbps video content and transmitted .

The terminal information analyzing unit 208 can analyze whether the client terminal apparatus 1 100/1 is a terminal apparatus capable of adaptive streaming service. For example, it can be determined from the video service request information whether the client terminal apparatus 1 100/1 is a terminal apparatus capable of adaptive streaming service.

The service type determination unit 210 may determine an adaptive streaming service type when the client terminal device 1 100/1 is a terminal device capable of adaptive streaming service. The adaptive streaming service type may include a service type of either HLS or SS or HDS, as described above.

The client DB 212 can be managed by the service management unit 202, and client information, client terminal device information and the like are stored, and optional information can be selected by the service management unit 202 as needed. In addition, network load information provided from the network load sensing apparatus 400 may be temporarily stored in the client DB 212.

The content DB 214 may be managed by the service management unit 202 and may be provided with video content provided from the content providing apparatus 300, video content converted by the video conversion unit 206, client information, And the like, and the arbitrary information can be selected and selected by the service management unit 202 as needed.

These DBs 212 and 214 may be implemented using a relational database management system (RDBMS) such as Oracle, Infomix, Sybase, DB2, or a combination of a relational database management system such as Gemston, Orion, (OODBMS), such as O2, O2, etc., and may have suitable fields to achieve their functions.

Hereinafter, a video service method according to an exemplary embodiment of the present invention will be described in detail with reference to a flowchart of FIG. 4, which is a flowchart for determining quality of video content based on network load information do.

4, when the video service request is received from the client terminal unit 1 (100/1) (S100), the video service server 200 transmits the video service request information of the client terminal unit 1 (100/1) To the providing apparatus 300 (S102). The moving picture service request information at this time includes not only the moving picture information required by the client terminal unit 1 100/1 but also terminal information (manufacturer information, model name, etc.) of the client terminal unit 1 100/1 or user information And the like.

The content providing apparatus 300 receiving the video service request information can deliver the video service response information corresponding to the video service request information to the video service apparatus 200 (S104). The video service response information may include not only the video content corresponding to the video service request information but also at least one of the capacity, the reproduction time, and the bit rate of the video content.

When the video service response information is provided to the video service apparatus 200, the video service apparatus 200 may provide the corresponding video service response information to the client terminal apparatus 100/1 (S106). At this time, the moving picture service apparatus 200 may temporarily store moving picture contents corresponding to the moving picture service response information, for example, adaptive streaming moving picture contents in the contents DB 214.

Then, the moving picture service apparatus 200 can transmit the moving picture contents temporarily stored in the contents DB 214 to the client terminal apparatus 100/1 (S108). The video content at this time may be, for example, a low bit-rate video content.

Thereafter, the video service apparatus 200 can check whether there is a video content request from the client terminal apparatus 100/1 (S110). At this time, the video content request is transmitted to the client terminal device 1 (100/1) at a quality (bit rate) different from the video content currently being watched, for example, at a high bit- For example, because the user may need a better quality video than the quality of the video currently being watched.

If there is a video content request from the client terminal unit 1 (100/1), the video service apparatus 200 can analyze the client information in the client DB 212 through the service management unit 202 (S112).

Then, the video service apparatus 200 can request the network load information from the network load sensing apparatus 400 (S114), and the network load sensing apparatus 400 transmits a network load information response message corresponding to the network load information request to the video service To the device 200 (S116). Any network load information may be included in the network load information response message.

Upon receiving the network load information response message from the network load sensing apparatus 400, the video service apparatus 200 can determine the quality of the video content based on the client information and the network load information (S118). For example, the service management unit 202 in the video service apparatus 200 can determine the high bit rate video content or the low bit rate video content.

Accordingly, the service management unit 202 can transmit the video content according to the above-described quality determination result to the client terminal device 1 100/1 (S120). For example, when the video quality (bit rate) requested by the client terminal 1 (100/1) matches the video quality determined by the video service apparatus 200, the service management unit 202 determines that the client terminal apparatus 100/1 (For example, high bit rate), and when the video quality requested by the client terminal device 1 100/1 is not matched with the video quality determined by the video service apparatus 200 (E.g., a low bit rate) of moving picture content determined by the moving picture service apparatus 200.

As described above, according to the embodiment of the present invention, when video content is adaptively managed between a client and a content provider (CP), a video service that can determine the quality of video content based on terminal information and network load information Technology.

FIG. 5 is a flowchart illustrating an example of a process of determining a quality of a video content based on, for example, a bandwidth available on a network, according to an exemplary embodiment of the present invention.

4, when a video service request is received from the client terminal 1 (100/1) (S200), the video service server 200 transmits the video service request information of the client terminal 1 (100/1) To the providing apparatus 300 (S202). The moving picture service request information at this time includes not only the moving picture information required by the client terminal unit 1 100/1 but also terminal information (manufacturer information, model name, etc.) of the client terminal unit 1 100/1 or user information And the like.

The content providing apparatus 300 receiving the video service request information can deliver the video service response information corresponding to the video service request information to the video service apparatus 200 (S204). The video service response information may include not only the video content corresponding to the video service request information but also at least one of the capacity, the reproduction time, and the bit rate of the video content.

If the video service response information is provided to the video service apparatus 200, the video service apparatus 200 may provide the corresponding video service response information to the client terminal apparatus 100/1 (S206). At this time, the moving picture service apparatus 200 may temporarily store moving picture contents corresponding to the moving picture service response information, for example, adaptive streaming moving picture contents in the contents DB 214.

Then, the moving picture service apparatus 200 can transmit the moving picture contents temporarily stored in the contents DB 214 to the client terminal apparatus 100/1 (S208). The video content at this time may be, for example, a low bit-rate video content.

At this time, the service management unit 202 in the video service apparatus 200 may analyze the available bandwidth on the network 10 according to the embodiment of the present invention (S210). Here, the available bandwidth may refer to an available bandwidth of a section connected to the client terminal unit 1 (100/1) based on the transmission rate of data transmitted to the client terminal unit 1 (100/1).

Thereafter, the video service apparatus 200 can confirm whether there is a video content request from the client terminal apparatus 1 (100/1) (S212). At this time, the video content request is transmitted to the client terminal device 1 (100/1) at a quality (bit rate) different from the video content currently being watched, for example, at a high bit- For example, because the user may need a better quality video than the quality of the video currently being watched.

If there is a video content request from the client terminal unit 1 100/1, the video service apparatus 200 can analyze the client information in the client DB 212 through the service management unit 202 (S214).

The video service apparatus 200 can determine the quality of the video content based on the available bandwidth and the client information (S216). For example, the service management unit 202 in the video service apparatus 200 can determine the high bit rate video content or the low bit rate video content.

Accordingly, the service management unit 202 can transmit the video content according to the above-described quality determination result to the client terminal device 1 100/1 (S218). For example, when the video quality (bit rate) requested by the client terminal 1 (100/1) matches the video quality determined by the video service apparatus 200, the service management unit 202 determines that the client terminal apparatus 100/1 (For example, high bit rate), and when the video quality requested by the client terminal device 1 100/1 is not matched with the video quality determined by the video service apparatus 200 (E.g., a low bit rate) of moving picture content determined by the moving picture service apparatus 200.

As described above, according to the embodiment of the present invention, in adaptively managing moving picture contents between a client and a contents provider (CP), it is possible to control the moving speed of a moving picture It is a video service technology that can determine the quality of video contents by deriving the available bandwidth.

FIG. 6 is a flowchart illustrating a method of modifying metadata of a video content based on network load information, for example, according to an exemplary embodiment of the present invention. Referring to FIG.

6, when a video service request is received from the client terminal unit 1 (100/1) (S300), the video service apparatus 200 transmits the video service request information of the client terminal unit 1 (100/1) To the providing apparatus 300 (S302). The moving picture service request information at this time includes not only the moving picture information required by the client terminal unit 1 100/1 but also terminal information (manufacturer information, model name, etc.) of the client terminal unit 1 100/1 or user information And the like.

The content providing apparatus 300 receiving the video service request information can deliver the video service response information corresponding to the video service request information to the video service apparatus 200 (S304). The video service response information may include not only the video content corresponding to the video service request information but also at least one of the capacity, the reproduction time, and the bit rate of the video content. The video content, the capacity of the video content, the playback time, the bit rate, and the like can be temporarily stored in the content DB 214.

If the video service response information is provided to the video service apparatus 200, the video service apparatus 200 can analyze the client information in the client DB 212 through the service management unit 202 (S306).

Then, the video service apparatus 200 can request the network load information from the network load sensing apparatus 400 (S308), and the network load sensing apparatus 400 transmits a network load information response message corresponding to the network load information request to the video service To the device 200 (S310). Any network load information may be included in the network load information response message.

The video service apparatus 200 receiving the network load information response message from the network load sensing apparatus 400 can modify the metadata of the video content according to the analysis results of the client information, the network load information, the content information, and the like (S312). For example, the service management unit 202 in the moving image service apparatus 200 may delete index information corresponding to a predetermined bit rate from the metadata of the moving image content.

For example, assuming that video information about 1 Mbps, 900 Kbps, 800 Kbps, 700 Kbps, and 600 Kbps exist in the metadata of the video content, if the client terminal device 1 100/1 is a smart pad, However, when the client terminal device 1 (100/1) is a smartphone, the index information of the upper two (1 Mbps, 900 Kbps) may be deleted and the metadata may be modified so that only the information of 800 Kbps to 600 Kbps exists.

In addition, if the bit rate of the moving picture content exceeds the maximum bit rate set in the wireless network, the upper bit rate can be deleted. For example, assuming that the maximum bit rate of the wireless network is 700 Kbps, information about 1 Mbps, 900 Kbps, and 800 Kbps can be deleted from the metadata.

Also, the metadata can be modified according to whether or not the network is congested. For example, when the network is not congested, the original metadata is maintained. However, when the network is congested, the information of the meta data can be partially deleted according to the congestion degree of the network. For example, when the network congestion level is low (five bit rate information is present in the metadata file), the upper 20% bit rate information is deleted (only one highest bit rate is deleted and four bit rate information is provided )can do. On the other hand, if the network congestion level is high, the upper 50% bit rate information can be deleted (upper 1 Mbps, 900 Kbps, 800 Kbps information is deleted and only 700 Kbps and 600 Kbps information are retained).

Such client terminal information, content information, and network information may be considered together.

Accordingly, the service management unit 202 sends the video content according to the above-described metadata correction result or the video content in the content DB 214 requested by the client terminal apparatus 1 1001 / to the client terminal apparatus 100/1 (S314).

For example, when the analysis result of the client information and the network load information satisfies the video quality (bit rate) requested by the client terminal device 1 (100/1), the service management unit 202 performs the process It is possible to transmit the video content in the content DB 214 to the client terminal device 1 100/1 and the analysis result on the client information and the network load information can be transmitted to the client terminal device 1 100/1 ), It is possible to transmit the video contents modified with the metadata to the client terminal device 1 (100/1) as described above.

As described above, according to the embodiment of the present invention, when video content is adaptively managed between a client and a content provider (CP), a video service capable of modifying the metadata of the video content according to the terminal information and the network load information Technology.

The moving picture service method of the present invention, which provides various embodiments as described above, can be implemented as a code that can be executed by a computer on a computer-readable recording medium. The computer- And may include any type of recording device in which data that can be read by the recording device is stored. Such a computer readable recording medium may include, for example, a non-volatile memory such as a ROM, a flash memory, a magnetic storage, and the like, a volatile memory such as a RAM, The computer-executable code or program may be stored in a client terminal (or USIM) according to an embodiment of the present invention, or may be distributedly stored in a networked computer system.

In addition, the application (or applet) capable of performing the moving image service according to the embodiment of the present invention is described as being stored in the client terminal device or the recording medium in the smart card. However, And are not intended to limit the scope of the invention. For example, the above-mentioned information is permanently stored in the virtualization device (or server) on the network, and the client terminal of the multimedia function on which the smart card or the smart card can be mounted is provided with cloud computing, Environment. That is, it should be noted that the above-described information may be stored in a virtualization device on a network, and the information may be used anytime and anywhere through a client terminal that may include a smart card or various forms of multimedia functions.

It should be noted that the applications for moving picture services according to the embodiment of the present invention can be utilized in the field of M2M communication supporting intelligent communication services between objects and objects so that they can be used and managed at any time and place in real time.

According to the present invention, in adaptively managing (converting and storing) moving picture contents between a client and a contents provider (CP), it is possible to adaptively manage (convert and store) moving picture contents based on network load information or available bandwidth. By providing the client with an adaptive streaming video content that is adaptively managed between the client and the content provider (CP) by determining the quality or by modifying the metadata of the video content, the quality of the client , And QoE) and can efficiently utilize wireless resources through traffic reduction. Thus, it is expected that the video service market will be revitalized.

200: video service apparatus 202: service management unit
204: traffic attribute analysis unit 206:
208: terminal information analysis unit 210: service type determination unit
212: client DB 214: content DB

Claims (11)

A moving picture conversion unit for adaptively converting and storing the moving picture contents based on the moving picture service response information corresponding to the moving picture service request information from the client terminal device,
Determining quality of the moving picture content according to network information about a network to which the client terminal apparatus is connected and client information about the client terminal apparatus, and determining a quality of the moving picture content adaptively converted and stored by the moving picture conversion unit And a service management unit for transmitting the video content to the client terminal device,
The network information includes:
The network load information detected by the network load sensing device at the request of the service management unit and the available bandwidth analyzed by the service management unit
Video service device. delete The method according to claim 1,
Wherein the moving picture quality of the moving picture content includes a bit rate of the moving picture content
Video service device. The method of claim 3,
The service management unit,
And transmitting the requested video quality from the client terminal unit when the video quality requested by the client terminal unit is matched with the video quality determined by the service management unit, And transmits the video content of the video quality determined by the service management unit when the video quality is not matched with the video quality determined by the management unit
Video service device. The method according to claim 1,
Wherein the service management unit modifies metadata of the moving picture content,
Video service device. 6. The method of claim 5,
The service management unit,
When the analysis result of the client information and the network information satisfies the video quality requested by the client terminal device, transmits the video content stored by the video conversion module to the client terminal device, And transmits the video content of the metadata modified by the service management unit to the client terminal device when the analysis result of the analysis does not satisfy the video quality requested from the client terminal device
Video service device. The method according to claim 6,
Wherein the modified metadata is metadata in which index information corresponding to an arbitrary bit rate is deleted from the metadata of the moving image content
Video service device. A video service method performed by a video service apparatus,
Transmitting a first video content requested by a client terminal device in an adaptive streaming manner;
Analyzing client information of the client terminal apparatus when a second video content is requested from the client terminal apparatus;
Acquiring network load information through a network load sensing device and analyzing an available bandwidth of the network connected to the client terminal device;
And determining quality of the second video content based on the client information and the network load information
A method of video service of a video service device. 9. The method of claim 8,
Characterized in that the first video content and the second video content have different bit rates
A method of video service of a video service device. A video service method performed by a video service apparatus,
Analyzing client information of the client terminal device by transmitting the video content requested by the client terminal device in an adaptive streaming manner;
Obtaining network load information through a network load sensing device,
And modifying the metadata of the moving picture content based on the client information and the network load information
A method of video service of a video service device. 11. The method of claim 10,
And the step of modifying the metadata of the moving picture content includes the step of deleting the index information corresponding to an arbitrary bit rate in the metadata of the moving picture content
A method of video service of a video service device.

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