Abstract:
A system and method for signaling and indicating track relationship information in media files provides a mechanism for signaling the information of layered track groups and the information of multiple description coding (MDC) track groups, as well as a mechanism for signaling track relationship information in an efficient way. In local playback or unicast streaming applications, to select an independently decodable track for a certain media type, the information of alternate track groups is first found via the track relation box, and one track is selected from an alternate track group for the media type. If stream switching is desired, the switching track group information is found via the track relation box. In multicast applications with scalable or MDC streams, the tracks in a layered or MDC group are found via the track relation box and selected among all the layered or MDC groups.
Abstract:
Methods and devices for video encoding and decoding, where video data is obtained, followed by generating a base layer based thereon, the base layer comprising at least one picture, generating at least one enhancement layer based on the obtained video data, the enhancement layer comprising at least one picture, generating a dependency identifier for each of the base and enhancement layers, each dependency identifier being associated with a reference number; determining a respective sequence parameter set for each of the base layer and the enhancement layer having different dependency identifier values, wherein for a number of base and enhancement layers having sequence parameter set parameters substantially the same, using one sequence parameter set; and encoding the base layer and the at least one enhancement layer by using determined sequence parameter sets.
Abstract:
System and methods for media distribution are described. In one embodiment, a method of media distribution includes rendering of a media to a user, stopping the rendering of the media, and storing remaining media not rendered to the user in a user server. The method further includes receiving a request to stream the remaining media to the user, dividing the remaining media into segments, and assigning a priority to each segment. The remaining media is streamed, leaving out segments with priority lower than a threshold priority.
Abstract:
A system and method for signaling low-to-high layer switching points in a file format level to enable efficient scalable stream switching in streaming servers and local file playback. The present invention also provides for a system and method for signaling low-to-high layer switching points in video bit stream, e.g., to enable intelligent forwarding of scalability layers in media-aware network elements or computationally scalable decoding in stream recipients.
Abstract:
The invention relates to an encoder for forming an encoded picture stream. The pictures are defined as reference pictures or non-reference pictures, and information relating to decoding order and output order of a picture is defined for pictures of the picture stream. The encoder is arranged to form to the bitstream an indication of such a number of pictures arranged to be buffered in decoding order that is sufficient to recover the output order of pictures. The invention also relates to a signal, hypothetical encoder, decoder, hypothetical decoder, electronic device, system, software program and a storage medium.
Abstract:
In accordance with an embodiment, a method includes electronically receiving a media presentation description (MPD) from a network. The MPD describes multimedia content that includes alternative representations of a plurality of media types, and the MPD includes information indicative of how the alternative representations are encoded. The method also includes selecting one of the plurality of alternative representations for at least one of the plurality of media types based on information included in the MPD, requesting the selected one of the plurality of alternative representations piece-by-piece, and electronically receiving a piece of media data.
Abstract:
System and methods for media distribution are described. In one embodiment, a method of media distribution includes rendering of a media to a user, stopping the rendering of the media, and storing remaining media not rendered to the user in a user server. The method further includes receiving a request to stream the remaining media to the user, dividing the remaining media into segments, and assigning a priority to each segment. The remaining media is streamed, leaving out segments with priority lower than a threshold priority.
Abstract:
A system and method for media adaptation are provided. A method for providing media to an electronic device includes receiving a request for a media with a set of characteristics, and determining if the media with the set of characteristics resides in a media storage. The method also includes if the media with the set of characteristics resides in the media storage, retrieving the media with the set of characteristics from the media storage. The method further includes if the media with the set of characteristics does not reside in the media storage, transcoding an alternate media with an alternate set of characteristics to produce a transcoded media with the set of characteristics. The method additionally includes providing the media with the set of characteristics from the media storage or the transcoded media with the set of characteristics to the electronic device.
Abstract:
In accordance with an embodiment, a method of operating a computer server includes receiving streaming media data. The streaming media data includes content fragments and a media description file, and the media description file includes metadata describing the content fragments. The method also includes storing the content fragments in a cache.
Abstract:
A method comprises encoding a first view component of a first view of a multiview bitstream; and encoding a second view component of a second view; wherein the encoding of the second view component enables generating of a reference picture list for the second view component to include at least one of the following: (a) a first field view component based on the first view component or (b) a first complementary field view component pair including the first view component.