A method for transmitting encoded media data on the basis of a layer model includes dividing the media data onto a basic layer and at least one additional enhanced layer, transmitting the basic layer and the at least one enhanced layer via at least two network accesses, selecting a first network access to transmit the basic layer that has a network quality and/or stability that is sufficient for transmitting the basic layer; and selecting at least one second network access from among the network accesses depending upon the bandwidth of the first network access and the quality and stability of the network accesses for transmitting the at least one enhanced layer. An apparatus can be configured to execute the method. In some embodiments, the apparatus can include a communication system, a server computer device and/or a mobile terminal.

The reception side can easily acquire at least function enhancement information inside a codec. Image data of each picture of a base layer is encoded to generate a first encoded stream, and image data of each picture of an enhanced layer is encoded to generate a second encoded stream. The first encoded stream and the second encoded stream are transmitted. Function enhancement information including at least function enhancement information inside a codec is transmitted outside the encoded stream. For example, the function enhancement information further includes function enhancement information outside the codec.

Disclosed are an electronic device and a method for controlling the electronic device. Specifically, the electronic device according to the present disclosure receives a first image signal and a second image signal which are separated from an original image signal through a first channel and a second channel having different frequency bandwidths, and which have different data rates. When the first image signal and the second image signal are received, the electronic device determines whether an error exists in the second image signal, obtains a first output image signal and a second output image signal on the basis of the first image signal and the second image signal according to a result of the determination, and outputs the obtained first output image signal or second output image signal.

Receiving, transmitting, and generating streamed timed media data organized into temporal media segments, the timed media data belonging to partitioned timed media data comprising timed samples, each timed sample comprising a plurality of subsamples, the timed media data being transmitted as at least two media segment files, each comprising at least one independently encapsulated component. A manifest comprises a dependency item of information indicating a dependency relation between components and a dependency characterization item of information for interpreting the dependency item of information. Alternatively, the manifest comprises at least two different descriptions of at least one component, a first description comprising at least a first dependency item of information indicating a dependency relation from the at least one component to another component and a second description comprising at least a second dependency item of information indicating a dependency relation from another component to the at least one component.

A system and method are provided of minimizing network bandwidth used from an external network by client peers in a local network. The method can include the operation of organizing a plurality of clients each having media streamlets and a client parent in a structure within the local network. Mapping information propagates through the structure. The mapping information represents local streamlet locations as stored by the plurality of clients. Another operation is retrieving a local streamlet from a client identified in the mapping information as having the local streamlet for the requesting client.

Various aspects of a system and a method for transmitting data are disclosed herein. The method is included in a first electronic device. The first electronic device splits each frame of the video data into a plurality of partial resolution layers. The plurality of partial resolution layers comprises a base frame layer and one or more additional frame layers. The base frame layer and the one or more additional frame layers of frame of the video data are transmitted to a second electronic device.

A method, apparatus and computer program product for utilizing network coding for multi-resolution multicast is presented. A network source partitions source content into a base layer and one or more refinement layers. The network source receives a respective one or more push-back messages from one or more network destination receivers, the push-back messages identifying the one or more refinement layers suited for each one of the one or more network destination receivers. The network source computes a network code involving the base layer and the one or more refinement layers for at least one of the one or more network destination receivers, and transmits the network code to the one or more network destination receivers in accordance with the push-back messages.

Basic format image data and the predetermined number of pieces of high-quality format image data are successfully transmitted. A basic video stream obtained by encoding basic format image data and a predetermined number of extended video streams obtained by encoding the predetermined number of pieces of high-quality format image data are generated. A container in a predetermined format including each of the video streams is transmitted. Identification information in a high-quality format corresponding to each of the predetermined number of extended video streams is inserted into a layer of the container and/or the video stream.

A media stream receiver is provided for scalable physical layer flow of packetized media streams. The media stream receiver replicates the processing block in time, rather than in hardware, through the use of a single shared memory and pointer alignment calculations, which combines multiple buffering stages as the single, shared memory buffer to offer redundancy and alignment, while acting as a receiver buffer to account for packet delay variations. By doing so the media stream receiver can perform a vertical interval switch between received media streams.

Image data of each of pictures which constitute dynamic image data is classified into a plurality of layers, image data of each of the classified layers is encoded, and a video stream having the encoded image data of the pictures of each of the layers is generated. A container in a predetermined format which includes the generated video stream is transmitted. Decoding timing information, which has been set so that a higher layer has a shorter decoding time interval of the encoded image data of each of the pictures, is added to the encoded image data of the pictures of each of the layers. The operations enable a reception side to perform a favorable decoding process commensurate with its decoding capability.