Abstract:
Disclosed are a method and device for an adaptive HTTP streaming service using metadata relating to content. The content metadata can be sent to a terminal after having been effectively allocated to suit the purpose of use of the terminal via general media information or specific media information. A group comprises one or more representations of the content. The metadata comprises a group element, and the group element provides a summary of the attributes of one or more representations comprised in the group.
Abstract:
The present invention relates to video information prediction and video encoding/decoding using the same. The video encoding, according to the present invention, comprises the steps of: decoding a picture of a reference layer; inducing an inter-layer reference picture by sampling the decoded picture of the reference layer; forming a reference picture list that includes the inter-layer reference picture and a reference picture of a current layer; generating a prediction sample for a current block by predicting the current block of the current layer on the basis of the reference picture list; generating a residual sample for the current block on the basis of the prediction sample; and encoding the residual sample.
Abstract:
The present invention relates to a method and an apparatus for interlayer prediction, and the method for interlayer prediction, according to the present invention, comprises the steps of: deciding whether to apply an interlayer prediction to an enhancement layer; and performing a prediction on a current block of the enhancement layer based on reference information that is generalized and generated from a reference picture, which is decoded, of a reference layer, when the interlayer prediction is applied, wherein the reference layer information can be encoding information of a reference block , which corresponds to a current block of the enhancement layer, from the reference layer, and residual information.
Abstract:
An apparatus and method for adapting a scalable video coding (SVC) bitstream is provided. The apparatus (200) may include: a layer selection unit (210) to select at least one quality layer from a plurality of quality layers contained in each of spatial layers of the SVC bitstream; a layer discarding unit (220) to discard the at least one quality layer; and a layer dependency modification unit (230) to modify a quality layer dependency between one or more quality layers remaining among the plurality of quality layers, or a spatial layer dependency between the plurality of spatial layers. Accordingly, it is possible to adapt the SVC bitstream where the entire quality of spatial layers is enhanced.
Abstract:
Disclosed are a method and apparatus for an adaptive HTTP streaming service using media content metadata. The media content consist of a series of periods. The metadata may include a start time attribute and/or a duration attribute for each period. The metadata may determine a start time of each period and a start time of each segment contained in each period. A terminal accesses the segments contained in each period, and performs decoding and rendering processes on the data of the media content contained in the segments, thereby reproducing the media content.
Abstract:
Disclosed are an apparatus and method for providing an adaptive HTTP streaming service using metadata for content. The metadata includes one or more base URL elements. The URL of a segment constituting media is generated on the basis of one or more base URL elements. The URLs of the segment may be generated by mapping any of the one or more base URL elements into a source URL property of the segment. The generated URLs indicate the same segment.
Abstract:
The present invention pertains to a method and/or an apparatus for encoding and/or decoding video using intra-prediction combined between layers, comprising: a reference sample generation unit for generating a reference sample by using a sample which is included in at least one block from among a sample included in a block restored around a target block of an upper layer, a sample included in a corresponding block of a lower layer which corresponds to a target block of an upper layer, a sample included in a corresponding block of a lower layer which corresponds to a block restored around a target block of an upper layer, and a sample included in any specific block of a lower layer; a prediction unit for generating a prediction value of the target block by using the reference sample; and a prediction value generating unit for generating a final prediction value of a prediction target block by the prediction value.
Abstract:
An interlayer prediction method according to the present invention comprises: a step of determining the position of a reference criteria sample corresponding to an enhancement criteria sample in a reference layer on the basis of the position of an enhancement criteria sample that belongs to an enhancement layer; a step of determining at least one reference layer block in the reference layer on the basis of the position of the reference criteria sample; and a step of predicting the current block that belongs to the enhancement layer on the basis of the movement information of said at least one reference layer block.
Abstract:
Disclosed are an apparatus and method for providing an adaptive HTTP streaming service using metadata for contents. The metadata includes minimum buffering time property indicating the minimum amount of media contents which are initially buffered. A terminal receives contents from a server before playing the contents and buffers the contents by at least the minimum amount. The metadata includes range properties indicating a target range to which a URL points. A terminal receives bytes from the URL which the range properties indicate, and plays the contents using the bytes.
Abstract:
The present invention relates to an apparatus and method for transmitting and receiving a streaming service. The apparatus and method for transmitting and receiving a streaming service involve using a lightweight multimedia file suitable for HTTP streaming. An ISO file that is created by a non-interleaved storage method unsuitable for an HTTP streaming service can be converted, using an HTTP hint track, into a file of an interleaved storage method suitable for an HTTP streaming service. The ISO file may contain multimedia tracks for supporting multiple bit rates and resolutions. Chuck data of media tracks, which provide multiple multimedia qualities, can be efficiently acquired, and the acquired chuck data is stored in an interleaved method, thereby generating a lightweight ISO file suitable for an HTTP streaming service.