Systems and methods of the present disclosure provide for dynamic delay equalization of related media signals in a media transport system. Methods include receiving a plurality of related media signals, transporting the related media signals along different media paths, calculating uncorrected propagation delays for the media paths, and delaying each of the related media signals by an amount related to the difference between the longest propagation delay (of the uncorrected propagation delays) and the uncorrected propagation delay of the related media signal/media path. Calculating the uncorrected propagation delays and delaying the related media signals may be performed in response to a change to the propagation delay of at least one of the related media signals/media paths. Additionally or alternatively, calculating the uncorrected propagation delays and delaying the related media signals may be performed while transporting the related media signals.

A reception apparatus includes a plurality of reception units each corresponding to a communication path among a plurality of communication paths, and a generation unit configured to, in a case where the plurality of reception units receives a first data unit and a second data unit, generate the first data unit at a first time corresponding to a time at which the plurality of reception units has completed reception of data forming the first data unit, and generate the second data unit at a second time corresponding to a time at which the plurality of reception units has completed reception of data forming the second data unit.

A reception apparatus includes a plurality of reception units each corresponding to a communication path among a plurality of communication paths, and a generation unit configured to, in a case where the plurality of reception units receives a first data unit and a second data unit, generate the first data unit at a first time corresponding to a time at which the plurality of reception units has completed reception of data forming the first data unit, and generate the second data unit at a second time corresponding to a time at which the plurality of reception units has completed reception of data forming the second data unit.

A video quality assessment method includes obtaining a video quality assessment parameter of a to-be-assessed video, where the video quality assessment parameter of the to-be-assessed video includes an average packet loss gap of the to-be-assessed video, determining packet loss dispersion of the to-be-assessed video based on the video quality assessment parameter of the to-be-assessed video, and determining quality of the to-be-assessed video based on a packet loss rate of the to-be-assessed video, an average consecutive packet loss length of the to-be-assessed video, the packet loss dispersion of the to-be-assessed video, and attribute information of the to-be-assessed video.

A video quality assessment method includes obtaining a video quality assessment parameter of a to-be-assessed video, where the video quality assessment parameter of the to-be-assessed video includes an average packet loss gap of the to-be-assessed video, determining packet loss dispersion of the to-be-assessed video based on the video quality assessment parameter of the to-be-assessed video, and determining quality of the to-be-assessed video based on a packet loss rate of the to-be-assessed video, an average consecutive packet loss length of the to-be-assessed video, the packet loss dispersion of the to-be-assessed video, and attribute information of the to-be-assessed video.

A file format structure for use with scalable video coding systems and methods, where a rate share operation box indicates which adaptation operation points for coded media are available in a file. The rate share operation box can include a characterization of the adaptation result for each adaptation operation point. In addition, the rate share operation box can include an identifier that indicates which algorithm was used in generating each adaptation operation point.

A file format structure for use with scalable video coding systems and methods, where a rate share operation box indicates which adaptation operation points for coded media are available in a file. The rate share operation box can include a characterization of the adaptation result for each adaptation operation point. In addition, the rate share operation box can include an identifier that indicates which algorithm was used in generating each adaptation operation point.

Various embodiments include systems and methods for providing an immersive three-dimensional group session. Various embodiments include methods and devices for signaling a description of a scene with media components potentially coming from different parties. In various aspects, a scene graph may be signaled through a session description protocol (SDP) during a session initiation protocol (SIP) session setup. In various embodiments, the scene graph may include respective graphical output nodes assigned to be controlled by each of the plurality of participant computing devices in an immersive three-dimensional group session.

A method and apparatus for an adaptive Hypertext Transfer Protocol (HTTP) streaming service using metadata of content are provided. The metadata of the content may be efficiently divided for a purpose of use of a terminal based on general media information or specific media information, and may be transmitted to the terminal. A group may include one or more representations of content. The metadata may include a group element, and the group element may provide a summary of attributes of one or more representations included in the group.

Technology for a multimedia telephony services over internet protocol (IP) multimedia subsystems (IMS) (MTSI) receiver operable to support region of interest (ROI) signaling with a MTSI sender is disclosed. The MTSI receiver can receive a requested region of interest (ROI). The MTSI receiver can signal the requested ROI for transmission to the MTSI sender via a real-time transport control protocol (RTCP) feedback message. The MTSI receiver can decode encoded video received from the MTSI sender. The encoded video can correspond to the requested ROI.