KR101144498B1 - Scalable video provide system and scalable video provide method - Google Patents
Scalable video provide system and scalable video provide method Download PDFInfo
- Publication number
- KR101144498B1 KR101144498B1 KR20080039260A KR20080039260A KR101144498B1 KR 101144498 B1 KR101144498 B1 KR 101144498B1 KR 20080039260 A KR20080039260 A KR 20080039260A KR 20080039260 A KR20080039260 A KR 20080039260A KR 101144498 B1 KR101144498 B1 KR 101144498B1
- Authority
- KR
- South Korea
- Prior art keywords
- scalable video
- video
- content
- svc
- information
- Prior art date
Links
Images
Landscapes
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
A scalable video providing system and a scalable video providing method capable of effectively lowering the data transfer rate at the time of enhanced video streaming and maintaining the reliability in a playback environment of scalable video in response to an attempt to play back video enhanced more than previously stored video is disclosed have. The scalable video providing system according to the present invention is characterized in that when a terminal device is to reproduce a third scalable video which is higher than the previously stored first scalable video in the terminal device, When the scalable video is requested to an external content providing server, the content providing server extracts the requested second scalable video from the corresponding content, and provides the stream to the terminal, and the second scalable video to be streamed And arranging the first scalable video to reproduce the enhanced third scalable video.
Streaming, SVC, H.264 Scalable Extenision, Scalable
Description
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scalable video providing system, and more particularly, to a scalable video providing system in which, in a scalable video playback environment, When only video is requested, effectively extracting only additional video from the corresponding content corresponding to the request and providing streaming, the enhanced video is played back using the pre-stored video and the streamed additional video, thereby effectively lowering the data transmission rate at the time of streaming, To a scalable video providing system, a scalable video providing method, a terminal device, a content providing server, and a control method thereof.
2. Description of the Related Art [0002] In recent years, as contents (particularly, video contents) have been exchanged (transmitted / received) actively, various methods for coding video to transmit / receive video contents effectively have been developed. Especially. It is expected that the video (hereinafter referred to as SVC video) encoded in accordance with the SVC (Scalable Video Coding) method standardized as H.264 Salable Extension will be greatly increased in the future.
Describing SVC video, it is possible to distinguish a bit stream that contributes to each resolution, frame rate, and picture quality as video encoded according to the SVC scheme. According to the SVC scheme, a layer of an SVC is composed of one base layer and one or more enhancement layers that can be stacked consecutively on a base layer, The maximum resolution, frame rate, and image quality can be expressed. SVC video can support various resolutions, frame rates, and picture quality as the number of consecutive expansion layers increases.
Accordingly, a playback apparatus that receives SVC video streaming and plays back SVC video having an appropriate resolution, frame rate, and image quality according to the state of the network (e.g., transfer rate) and the situation of the playback apparatus itself Download, or stream and receive and play. Particularly, a playback apparatus for playing SVC video is capable of playing back low-resolution SVC video (hereinafter, referred to as first SVC video) or high-resolution, high frame rate, high-quality SVC video (hereinafter referred to as a third SVC video May be selectively downloaded or streamed and played back.
As described above, the playback apparatus capable of selectively reproducing the first SVC video or the third SVC video has played back the first SVC video in the past and stores it. However, as the state of the network is improved, If you want to play 3SVC video, stream the enhanced third SVC video over the network.
However, in the conventional case of reproducing the enhanced third SVC video in the state where the first SVC video is stored, since the improved third SVC video is streamed without using the pre-stored first SVC video containing the same contents at all, There is a problem that the data transmission rate becomes very high and the network resources are consumed.
SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a method and apparatus for reproducing a third scalable video having a higher scalability than previously stored first scalable video, A terminal device that transmits a request query requesting a second scalable video that is further required based on the scalable video to an external device; and a control unit that searches the corresponding content, which is requested based on the request query, And a content providing server for providing the second scalable video corresponding to the scalable video except for the first scalable video in the searched content to the terminal device. The scalable video providing system includes the enhanced video streaming Effectively reducing the data transmission rate of the first time, The scale and scalable video encoding conditions to provide a second scalable video accordingly to search the same content to the terminal device.
Another object to be achieved by the present invention is to provide a query receiver for receiving a predetermined request query from an arbitrary terminal apparatus via an external network, A query analyzing unit for searching for a corresponding content requested based on the request query if it is inputted; and a scalable video processing unit for searching the scalable video stored in the terminal device based on the request query, And a video transmission unit for transmitting the second scalable video to the terminal apparatus via the network, wherein the data transmission rate at the time of enhanced video streaming is In addition to effectively lowering the second scalable ratio It is to maintain the reliability of five.
It is another object of the present invention to provide a method and apparatus for reproducing a third scalable video having higher scalability than previously stored first scalable video, Transmitting a request query requesting a second scalable video that is further required based on the first scalable video to an external content providing server; and receiving, when the request query is received, The content providing server extracts the second scalable video corresponding to the remaining scalable video except for the first scalable video from the content searched by the content providing server and transmits the extracted second scalable video to the terminal device Providing a scalable video providing method comprising: The second is to maintain the reliability of a scalable video, with lowering the transmission rate at the time of video stream effectively.
It is another object of the present invention to provide a method and apparatus for reproducing the third scalable video having higher scalability than previously stored first scalable video, Transmitting a request query for requesting the second scalable video, which is further required based on the first scalable video, to an external content providing server; and when the second scalable video is received from the content providing server, And processing the first scalable video and the second scalable video and outputting the third scalable video. The present invention provides a control method of a terminal device that effectively lowers a data transmission rate at the time of enhanced video streaming And to maintain the reliability of the second scalable video.
In order to achieve the above object, according to a first aspect of the present invention, there is provided a scalable video providing system for reproducing a third scalable video having a higher scalability than a previously stored first scalable video, A terminal device for transmitting a request query requesting a second scalable video which is further required based on the scalable video to the outside; And searching the corresponding content requested based on the request query, and transmitting the second scalable video corresponding to the remaining scalable video excluding the first scalable video from the retrieved content to the terminal And a content providing server provided to the apparatus.
Advantageously, the scalable video may include SVC video encoded according to a Scalable Video Coding (SVC) scheme.
According to a second aspect of the present invention, there is provided a terminal apparatus for processing scalable video comprising: a video storage unit for storing a first scalable video; A video processing unit for processing the first scalable video and the second scalable video stored in the video storage unit and outputting the third scalable video when the second scalable video is received from an external content providing server; And to request the second scalable video that is further requested based on the first scalable video when it is desired to reproduce the third scalable video having higher scalability than the previously stored first scalable video, A video controller for outputting content information; And a request unit for generating a request query requesting the second scalable video based on the requested content information and transmitting the generated request query to the content providing server.
The request unit may include a request query generator for generating the request query requesting the second scalable video based on the requested content information output from the video controller, And a request query transmitting unit for transmitting the request query to the content providing server through an external network.
Preferably, the request query includes content name information corresponding to the first scalable video, content codec information, encoding variable information, scalability information, and scalability of the third scalable video to be reproduced And / or information.
Preferably, the video processing unit is configured to read the first SVC video stored in the video storage unit, to perform NAL (Network Abstraction Layer) units of the second SVC video stream-received from the content providing server, And outputs the third SVC video by arranging the NAL units of the first SVC video based on the time stamp.
Preferably, the apparatus further includes a video receiver receiving the scalable video streamed from the external content providing server and outputting NAL (Network Abstraction Layer) units included in the packet of the scalable video to the video processor .
According to a third aspect of the present invention, there is provided a content providing server for providing scalable video comprising: a query receiving unit for receiving a predetermined request query from an arbitrary terminal apparatus through an external network; A query analyzer for searching for the requested content based on the request query when the request query is input from the query receiver; A video extracting unit for extracting a second scalable video corresponding to the remaining scalable video from which the first scalable video stored in the terminal device is excluded from the retrieved content based on the request query; And a video transmission unit transmitting the second scalable video to the terminal device via the network.
Preferably, the request query received from the terminal device includes content name information corresponding to the first scalable video already stored in the terminal device, content codec information, encoding variable information, scalability information, And scalability information of the third scalable video corresponding to the content.
Preferably, the query analyzing unit analyzes at least one of the content name information, the content codec information, the encoding variable information, and the required scalability video scalability information included in the request query The third scalable video corresponding to the corresponding content, and output the information included in the request query to the video extracting unit.
Preferably, the video extracting unit extracts the first scalable video from the retrieved third scalable video based on the scalability information of the first scalable video among the information included in the request query input from the query analyzing unit, The NAL (Network Abstraction Layer) unit according to the scalability information of the scalable video is removed, and the second scalable video corresponding to the remaining scalable video can be extracted and output.
The content analyzing unit may further include a content DB for storing content corresponding to at least one scalable video having different scalability and providing the content extracted by the query analyzing unit to the video extracting unit.
The content stored in the content DB may include metadata including at least one of content codec information, encoding parameter information, and scalability information.
According to a fourth aspect of the present invention, there is provided a scalable video providing method in which when a third scalable video having higher scalability than a previously stored first scalable video is to be played back, Transmitting a request query requesting an additional required second scalable video to an external content providing server based on the first scalable video; Retrieving the requested content based on the request query if the request query is received; And extracting the second scalable video corresponding to the scalable video excluding the first scalable video from the content searched by the content providing server and providing the extracted second scalable video to the terminal.
According to a fifth aspect of the present invention, there is provided a method of controlling a terminal device, comprising the steps of: when the third scalable video having higher scalability than a previously stored first scalable video is to be played back, Transmitting, to an external content providing server, a request query for requesting the second scalable video which is further required based on the good video; And processing the first scalable video and the second scalable video and outputting the third scalable video when the second scalable video is received from the content providing server.
Advantageously, transmitting the request query comprises: outputting requested content information for requesting the second scalable video further requested based on the first scalable video; Generating the request query requesting the second scalable video, and transmitting the generated request query to the content providing server through an external network.
Preferably, the request query includes content name information corresponding to the first scalable video, content codec information, encoding variable information, scalability information, and scalability of the third scalable video to be reproduced And / or information.
A control method of a content providing server according to a sixth aspect of the present invention for achieving the above object is a control method of a content providing server according to the sixth aspect of the present invention, when a predetermined request query is received from an arbitrary terminal apparatus via an external network, Searching; Extracting a second scalable video corresponding to the remaining scalable video excluding the first scalable video stored in the terminal device from the retrieved content based on the request query; And transmitting the extracted second scalable video to the terminal device via the network.
Preferably, the searching step may include at least one of the content name information, the content codec information, the encoding variable information, and the scalability information of the requested third scalable video included in the request query And searching for the third scalable video corresponding to the corresponding content.
Preferably, the extracting step may include extracting, from the retrieved third scalable video, scalability information of the first scalable video based on scalability information of the first scalable video included in the request query And extracting the second scalable video corresponding to the remaining scalable video by removing the NAL (Network Abstraction Layer) unit according to the second scalable video.
According to the scalable video providing system and the scalable video providing method of the present invention, when an enhanced third SVC video other than the first SVC video having a low resolution, a low frame rate, and a low quality is to be reproduced, Only the second SVC video which is further required for reproducing the third SVC video is streamed from the external SVC contents providing server and the sorted third SVC video is sorted by aligning the first SVC video and the second SVC video, The transmission rate can be effectively lowered.
In addition, according to the scalable video providing system and the scalable video providing method of the present invention, when searching / extracting a second SVC video that is further required, not only the content name but also a codec according to the same standard as the first SVC video, It is possible to provide the
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.
1 is a schematic diagram of a scalable video providing system according to the present invention.
1, a scalable video providing system according to the present invention includes a
Herein, the scalable video may include SVC video encoded according to the SVC (Scalable Video Coding) method. Hereinafter, the scalable video is assumed to be SVC video encoded according to the SVC scheme, 200 is an SVC
The SVC
In a case where the
Hereinafter, the configuration of the
2, the
In addition, the
The SVC
Here, the first SVC video is preferably low-resolution, low frame rate, and low-quality video.
The SVC
The
Here, it is preferable that the third SVC video has higher scalability than the first SVC video as the enhanced video having the same content as the first SVC video which is low-resolution, low frame rate, low-quality video and has high resolution, high frame and high image quality Do.
The lumbar vertebrae information output by the
Here, explaining the scalability information, the NAL unit defined in H.264 includes scalability information including at least one of resolution information, frame rate information, image quality information, and layer number information of the corresponding NAL unit . Accordingly, the higher the value of the resolution information, the frame rate information, the image quality information, and the layer number information, the higher the resolution, the higher the frame rate, the higher the image quality.
The SVC
The requesting
The request
In other words, the request
Such a request query can be represented in the following format.
name
Codec
variable
Scalability information
Scalability information
As described above, the request
The request query transmitting unit 117 transmits the request query generated by the request
The SVC
The SVC
Here, the second SVC video is further required for the SVC bitstream of the first SVC video to reproduce the enhanced third SVC video having high resolution, high frame, and high image quality using the first SVC video of low resolution, low frame rate, It is preferable that the SVC video corresponds to an SVC bitstream including NAL units.
That is, the SVC
Here, the playback processing unit (not shown) is a processing function unit for playing back the SVC bit stream, and performs a conventional general processing routine, so that its detailed configuration and description will be omitted.
Accordingly, when the
Hereinafter, the configuration of the SVC
3, the SVC
In addition, the SVC
The
The
3, the
Here, the
Here, the metadata may be expressed in the following format.
Hereinafter, a configuration in which the
That is, the
This is taken into account in the case where the same content is encoded with the SVC, the compressed SVC bit stream which is the result of encoding according to the encoding condition and the actually used codec is different. That is, there may be a plurality of SVC bit streams for one content in the
Accordingly, the
The
The SVC
That is, the SVC
The
Accordingly, the SVC
As described above, the
As described above, according to the
According to the
On the other hand, in the
Hereinafter, the control flow of the scalable video providing method according to the embodiment of the present invention will be described with reference to FIG. Here, for convenience of explanation, the configurations shown in FIG. 1, FIG. 2, and FIG. 3 will be described with reference to corresponding reference numerals.
First, the
Upon receiving the request query, the SVC
Accordingly, the
Hereinafter, a control flow according to the control method of the
First, a first SVC bit stream of a first scalable video having a low resolution, a low frame rate, and a low quality (hereinafter, referred to as a first SVC video) is stored in the terminal device 100 (S110). Then, it is determined whether the third SVC bitstream of the enhanced third scalable video (hereinafter referred to as the third SVC video) having higher scalability than the first SVC video is to be reproduced (S120). Here, it is preferable that the determination in step S120 is implemented by determining whether a playback request is input to the
If it is desired to reproduce the third SVC video, the
In addition, the
The request
The request
Then, the SVC
Then, an unshown regeneration processing unit (not shown) performs a general decoding processing routine to reproduce the enhanced third SVC video in the terminal device 100 (S180). When the reproduction of the third SVC video is completed or the end is selected by the user (S190), the reproduction of the third SVC video is ended.
Hereinafter, the control flow according to the control method of the SVC
First, it is determined whether a predetermined request query is received from an arbitrary terminal apparatus (hereinafter referred to as terminal apparatus 100) through the external network 10 (S210). If a request query is received, the query analyzing unit 220 ) Searches the
In step S220, the content corresponding to the content name information of the first SVC video is searched in the
That is, the third SVC bitstream of the third SVC video is output to the SVC
The
As described above, according to the scalable video providing method of the present invention, when it is desired to reproduce the enhanced third SVC video other than the first SVC video having low resolution, low frame rate, and low quality stored in the
As described above, according to the scalable video providing method of the present invention, when an enhanced third SVC video is to be reproduced, streaming of only the second SVC video, which is further required, is not received and the third SVC video is reproduced Therefore, the data transfer rate at the time of streaming can be effectively lowered.
In addition, according to the scalable video providing method according to the present invention, when retrieving the second SVC video, which is further required, from the DB, not only the content name but also the codec and encoding parameters according to the same standard as the first SVC video, By retrieving the content corresponding to the scalability information of the video, it is possible to provide the
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
When streaming of the advanced third SVC video is not performed, streaming of only the second SVC video required for reproducing the third SVC video using the previously stored first SVC video is performed without streaming the entire third SVC video, When the scalable video playback system and scalable video providing method of the present invention in which the transfer rate can be effectively lowered and the reliability of the second SVC video can be maintained can be applied, the streaming environment of the scalable video and the streaming network resource utilization The present invention can be very industrially applicable because it is possible to make a very great progress and to have a commercially available or commercially available streaming server and playback apparatus and a streaming playback system to be applied.
1 is a schematic control block diagram of a scalable video providing system according to an embodiment of the present invention.
FIG. 2 is a control block diagram of a terminal device according to an embodiment included in the scalable video providing system according to the present invention.
3 is a control block diagram of an SVC contents providing server according to an embodiment included in the scalable video providing system according to the present invention.
4 is a control flowchart illustrating a scalable video providing method according to an embodiment of the present invention.
5 is a control flowchart illustrating a control flow of a terminal device in a scalable video providing method according to an embodiment of the present invention.
6 is a control flowchart showing a control flow of an SVC contents providing server in a scalable video providing method according to an embodiment of the present invention.
Description of the Related Art
100: terminal device 110:
113: request query generation unit 116: request query transmission unit
120: SVC video control unit 130: SVC video storage unit
140: SVC video processing unit 150: SVC video receiving unit
200: SVC contents providing server 210:
220: query analysis unit 230: content DB
240: SVC video extracting unit 250: SVC video transmitting unit
Claims (25)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR20080039260A KR101144498B1 (en) | 2008-04-28 | 2008-04-28 | Scalable video provide system and scalable video provide method |
EP08874022A EP2319223A1 (en) | 2008-04-24 | 2008-11-12 | Scalable video providing and reproducing system and methods thereof |
PCT/KR2008/006656 WO2009131286A1 (en) | 2008-04-24 | 2008-11-12 | Scalable video providing and reproducing system and methods thereof |
US12/737,715 US8681856B2 (en) | 2008-04-24 | 2008-11-12 | Scalable video providing and reproducing system and methods thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR20080039260A KR101144498B1 (en) | 2008-04-28 | 2008-04-28 | Scalable video provide system and scalable video provide method |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20090113506A KR20090113506A (en) | 2009-11-02 |
KR101144498B1 true KR101144498B1 (en) | 2012-05-15 |
Family
ID=41554829
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR20080039260A KR101144498B1 (en) | 2008-04-24 | 2008-04-28 | Scalable video provide system and scalable video provide method |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR101144498B1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3021587A3 (en) | 2011-04-15 | 2016-12-28 | SK Planet Co., Ltd. | High speed scalable video coding device and method using multi-track video |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20070039944A (en) * | 2004-07-09 | 2007-04-13 | 콸콤 인코포레이티드 | System for layering content for scheduled delivery in a data network |
KR20070045737A (en) * | 2005-10-28 | 2007-05-02 | 에스케이 텔레콤주식회사 | Method and apparatus for a temporal & spatial scalable encoding/decoding based on multiple reference frames |
KR20070045733A (en) * | 2005-10-28 | 2007-05-02 | 에스케이 텔레콤주식회사 | Method and apparatus for a temporal scalable encoding/decoding based on multiple reference frames |
KR20070052634A (en) * | 2005-11-17 | 2007-05-22 | 삼성전자주식회사 | A methodology and system for scalable video bitstream encryption and discryption to scalable conditional access control according to multi-dimensionalscalability in scalable video coding |
-
2008
- 2008-04-28 KR KR20080039260A patent/KR101144498B1/en active IP Right Grant
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20070039944A (en) * | 2004-07-09 | 2007-04-13 | 콸콤 인코포레이티드 | System for layering content for scheduled delivery in a data network |
KR20070045737A (en) * | 2005-10-28 | 2007-05-02 | 에스케이 텔레콤주식회사 | Method and apparatus for a temporal & spatial scalable encoding/decoding based on multiple reference frames |
KR20070045733A (en) * | 2005-10-28 | 2007-05-02 | 에스케이 텔레콤주식회사 | Method and apparatus for a temporal scalable encoding/decoding based on multiple reference frames |
KR20070052634A (en) * | 2005-11-17 | 2007-05-22 | 삼성전자주식회사 | A methodology and system for scalable video bitstream encryption and discryption to scalable conditional access control according to multi-dimensionalscalability in scalable video coding |
Also Published As
Publication number | Publication date |
---|---|
KR20090113506A (en) | 2009-11-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR101868281B1 (en) | Information processing apparatus, information processing method, and computer-readable recording medium | |
KR101739272B1 (en) | Apparatus and method for storing and playing contents in multimedia streaming system | |
RU2671946C2 (en) | Information processing device and method | |
KR100492567B1 (en) | Http-based video streaming apparatus and method for a mobile communication system | |
US8635356B2 (en) | Method for supporting scalable progressive downloading of video signal | |
US8938767B2 (en) | Streaming encoded video data | |
US8681856B2 (en) | Scalable video providing and reproducing system and methods thereof | |
US20110246603A1 (en) | Methods and devices for live streaming using pre-indexed file formats | |
US20050193138A1 (en) | Storage medium storing multimedia data, and method and apparatus for reproducing the multimedia data | |
KR20030021558A (en) | Image data providing system and method thereof | |
JP2013543322A (en) | Client, content creator entity and methods for media streaming by them | |
KR101117915B1 (en) | Method and system for playing a same motion picture among heterogeneity terminal | |
JPWO2017145756A1 (en) | File generation apparatus, file generation method, reproduction apparatus, and reproduction method | |
JPWO2017145757A1 (en) | File generation apparatus, file generation method, reproduction apparatus, and reproduction method | |
KR101517959B1 (en) | Method for Adaptive Streaming | |
KR101731829B1 (en) | Device and method for processing digital contents in digital video receiver | |
KR101144498B1 (en) | Scalable video provide system and scalable video provide method | |
KR101012204B1 (en) | Streaming play system for scalable video and streaming play method for scalable video | |
KR101452269B1 (en) | Content Virtual Segmentation Method, and Method and System for Providing Streaming Service Using the Same | |
KR101499194B1 (en) | Method for Adaptive Streaming | |
KR20170102448A (en) | Method for Adaptive Playing Contents by Request and Response | |
JP4114868B2 (en) | Multiplexer and multiplexing method | |
JP2018074348A (en) | Video processing device, video processing method and video processing program | |
KR101684705B1 (en) | Apparatus and method for playing media contents | |
JP2003284025A (en) | Multimedia information transmission system |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
E902 | Notification of reason for refusal | ||
AMND | Amendment | ||
N231 | Notification of change of applicant | ||
E601 | Decision to refuse application | ||
J201 | Request for trial against refusal decision | ||
AMND | Amendment | ||
B701 | Decision to grant | ||
GRNT | Written decision to grant | ||
FPAY | Annual fee payment |
Payment date: 20150422 Year of fee payment: 4 |
|
FPAY | Annual fee payment |
Payment date: 20160503 Year of fee payment: 5 |
|
FPAY | Annual fee payment |
Payment date: 20170508 Year of fee payment: 6 |
|
FPAY | Annual fee payment |
Payment date: 20180427 Year of fee payment: 7 |
|
FPAY | Annual fee payment |
Payment date: 20190425 Year of fee payment: 8 |