Abstract: Provided are method and apparatus for transmitting and receiving a multimedia streaming service via a network. The method of providing a multimedia streaming service includes: dividing encoded data of a video including at least one of a two-dimensional (2D) video and a three-dimensional (3D) video into fragments; determining at least one of 3D signaling information for each fragment and relationship information to be used when the video refers to other videos; and continuously transmitting the fragments including the property information regarding the fragments and encoded video data.

Abstract: Provided is a method and apparatus for encoding and decoding in which block coding is applied. According to a method and apparatus for block coding encoding and decoding, a minimum quality seamless service may be provided by reliably recovering high importance data even though continuous data loss occurs in a wired and wireless transmission line. A transposed duplication calculation or a post duplication calculation may be performed with respect to the high importance data. Data of a predetermined lost time zone may be recovered by duplicated data of another time zone.

Abstract: Disclosed are a distributed video encoding/decoding method and a distributed video encoding/decoding apparatus, which can improve loss resilience and the quality of service. The distributed video encoding method first involves checking the state of a channel, determining a channel coding rate and the size of video data to be transmitted based on the checked state of a channel, determining the number of motion prediction performance steps based on the determined size of video data to be transmitted, encoding the video data to be transmitted by performing motion predictions according to the determined number of motion prediction performance steps, and channel-coding the encoded video data according to the determined channel coding rate. Accordingly, it is possible to improve loss resilience, even without additionally occupying network resources, thereby being capable of reducing the probability of decoding failure.

Abstract: A method of transmitting a data packet of a multimedia service is provided. The method includes generating a media characteristic corresponding to a single media content component or aggregated media characteristics corresponding to a plurality of multimedia content components, obtaining information used for generating the data packet from the generated media characteristics or aggregated media characteristics, and generating the data packet based on the obtained information used for generating the data packet and transmitting the generated data packet.

Abstract: An apparatus and a method for providing an adaptive multimedia service in a mobile communication system are provided. The method of providing a multimedia service includes collecting user-preference-aware information, device-capability-aware information, and network-aware information, generating a packet according to a correlation among the user-preference-aware information, the device-capability-aware information, and the network-aware information, and providing a multimedia service according to the generated packet.

Abstract: A method and apparatus for transmitting a multimedia data packet are provided. The method includes receiving Bottom-up Network Abstraction Layer (B-NAL) information from a network entity, generating Top-down Network Abstraction Layer (T-NAL) information on the multimedia data to be transmitted, generating a multimedia data packet containing said T-NAL information, and transmitting the multimedia data packet generated in the previous process, to the network entity, in consideration of said B-NAL information.

Abstract: Disclosed is a method of determining illumination compensation in a multi view video coding. The method includes determining when a current block performing illumination compensation is in a B skip mode and deriving a predicted illumination compensation value of the current block by using information regarding neighbor blocks of the current block and when the derived predicted illumination compensation value is not determining, setting the current block not to perform the illumination compensation; and when the derived predicted illumination compensation value is determining, setting the current block to perform the illumination compensation.

Abstract: Disclosed are a transcoding apparatus and method between two codecs each including a deblocking filter. The transcoding method between first and second codecs each including a deblocking filter, may include decoding input data encoded according to the first codec, according to the first codec so as to generate decoded data; and encoding the decoded data according to the second codec. The decoded data may include data on which deblocking filtering is not performed by the first codec, or data on which deblocking filtering is adaptively performed by the first codec. The decoded data may further include data on which deblocking filtering is performed by the first codec. The decoded data may be used as input data when the second codec performs encoding and/or when the second codec performs motion estimation.

Abstract: Provided is a method and apparatus for reducing zapping delay, which may transmit base layer data for each burst in a time-slicing scheme, and output the base layer data of a channel to be changed at the time of changing the channel, thereby reducing the zapping delay.

Abstract: A method and an apparatus for reducing a deterioration of a Quality of Experience (QoE) in a multimedia service. The method includes reproducing a first multimedia stream by the multimedia device, receiving a command for reproducing a second multimedia stream during the reproducing of the first multimedia stream, and reproducing the second multimedia stream with reference to information regarding a unit image that is independently decoded from the second multimedia stream. The information regarding the unit image includes information regarding a number of unit images per unit time included in the second multimedia stream.

Abstract: In an apparatus for providing a multimedia streaming service, a server transmits a Media Presentation Description (MPD) including information about media data to a client, receives a partial request message requesting a part of media data having a range according to a defined range in the MPD, and transmits to the client a segment having the range in response to the partial request message. The segment includes at least one fragment, segment index information indicating the position of the at least one fragment in the segment, and fragment index information indicating the position of each of a plurality of samples included in the at least one fragment.

Abstract: Methods and apparatuses for efficiently coding and decoding multi-view video are provided. A method of decoding multi-view video includes: interpreting a first picture type indicating whether a current picture of the multi-view video is a reference video type for inter prediction; interpreting a block type indicating a method of determining a motion vector of a current block of the current picture; interpreting a chrominance compensation value of the current block based on at least one of the interpreted first picture type and the interpreted block type; and performing chrominance compensation on the current block by using the interpreted chrominance compensation value.

Abstract: A method for reporting Quality of Service (QoS) control-related information in a network is provided, in which an intermediate network entity located within an end-to-end path generates the QoS control-related information by measuring a channel state, and reports the QoS control-related information to another network entity controlling the QoS.

Abstract: A video encoder/decoder and a video encoding/decoding method and medium. The video decoder includes a decoding unit which receives a video packet in which more significant items of items included in blocks of macroblocks, which make up the video packet, are arranged in a front part of the video packet and less significant items are arranged in a rear part of the video packet. The decoding unit sequentially decodes the items arranged in the video packet. Accordingly, an FGS encoding function is effectively performed without degrading the bit rate.

Abstract: Cooperative multi-display systems and techniques are provided. In one embodiment, a cooperative multi-display system includes multiple flexible displays, a controller that processes an original image into sub-images, each of the sub-images being at a location in the original image that corresponds to a location of each of the multiple flexible displays, and a driver that drives the multiple flexible displays and forwards the processed sub-images from the controller to the multiple flexible displays, respectively.

Abstract: Provided is a method for transmitting a stereoscopic video in a digital broadcasting system, the stereoscopic video being composed of a left view and a right view. The method includes: generating information indicating that the video is stereoscopic, information about a composition type of the stereoscopic video, and additional information based on the composition type; and transmitting the stereoscopic video and the generated information. The composition type is to compose the stereoscopic video of a single or two encoding streams by using the left view and the right view. In the case of a single stream mode in which the stereoscopic video is composed of the single encoding stream, the additional information includes information about positions of the left and right views.

Abstract: Methods and apparatuses for efficiently coding and decoding multi-view video are provided. A method of decoding multi-view video includes: interpreting from a received bitstream a block type indicating a method of determining a motion vector of a current block present in a current picture of the multi-view video; interpreting a first picture type indicating whether the current picture is a reference picture type for inter prediction; interpreting additional information of the current picture based on at least one of the interpreted first picture type and the interpreted block type; and reconstructing the current block and the current picture by using the additional information.

Abstract: A method for transmitting stereoscopic images using a variety of transport protocols is provided. To this end, a stereoscopic image packet is defined that comprises a stereoscopic packet header and a stereoscopic video packet header. The defined stereoscopic packet header and stereoscopic video packet header are used to transmit metadata needed for transmission of stereoscopic images. By doing so, it is possible to ensure compatibility with a variety of transport protocols.

Abstract: A method and apparatus transmitting stereoscopic image data according to a variable channel environment are provided.

Abstract: A method of providing multimedia services in consideration of the capability of a terminal, a method of receiving the multimedia services, and a terminal for receiving the multimedia services. The method of providing multimedia services includes receiving information regarding capability of a terminal, and processing data according to the received information and providing the processed data to the terminal. Accordingly, it is possible to provide the server or proxy server with information regarding resources available for a lightweight application terminal, allowing it to provide data at a level of quality best suited to the capabilities of the terminal.