Techniques for serving a manifest file of an adaptive streaming video include receiving a request for the manifest file from a user device. The video is encoded at different reference bitrates and each encoded reference bitrate is divided into segments to generate video segment files. The manifest file includes an ordered list of universal resource locators (URLs) that reference a set of video segment files encoded at a particular reference bitrate. A source manifest file that indicates the set of video segment files is identified based on the request. An issued manifest file that includes a first URL and a second URL is generated based on the source manifest file. The first URL references a first domain and the second URL references a second domain that is different from the first domain. The issued manifest file is transmitted to the user device as a response to the request.

Techniques are described for expanding and/or improving the Advanced Television Systems Committee (ATSC) 3.0 television protocol in robustly delivering the next generation broadcast television services. In a boundary region between first and second broadcast stations in which a receiver can pick up signals from both stations, a primary tuner receiving signals from plural antennae presents a demanded service while a secondary tuner uses a single antenna to scan for duplicate transmissions of the service, with handing off between the tuners being effected between scanning and service presentation.

Techniques are described for expanding and/or improving the Advanced Television Systems Committee (ATSC) 3.0 television protocol in robustly delivering the next generation broadcast television services. In a boundary region between first and second broadcast stations in which a receiver can pick up signals from both stations, a primary tuner receiving signals from plural antennae presents a demanded service while a secondary tuner uses a single antenna to scan for duplicate transmissions of the service, with handing off between the tuners being effected between scanning and service presentation.

A server processers received real-time transport protocol packets from a first device to obtain sequentially ordered packets at a first buffer. The server decodes the sequentially ordered packets to obtain decoded packets at a decoder. The server encodes the decoded packets to obtain encoded packets at an encoder. The server transmits the encoded packets from the encoder to a storage unit. The server fetches the encoded packets from the storage unit at a first interval using a second buffer. The server transmits the encoded packets from the second buffer to a second device at a second interval.

Measuring quality-of-experience (QoE) for virtual reality (VR) streaming content is disclosed. A network computing device receives a client-side VR stream capture and a client pose data set that are generated by a client computing device based on a VR content and one or more induced network impairments (e.g., latency, packet loss, and/or jitter, as non-limiting examples). Using the same VR content and the client pose data set, the network computing device generates a source VR stream capture that is not subjected to the one or more induced network impairments. The network computing device performs a frame-by-frame comparison of the client-side VR stream capture and the source VR stream capture. Based on the frame-by-frame comparison, the network computing device generates a QoE metric that indicates a degree of degradation of the client-side VR stream capture relative to the source VR stream capture.

Measuring quality-of-experience (QoE) for virtual reality (VR) streaming content is disclosed. A network computing device receives a client-side VR stream capture and a client pose data set that are generated by a client computing device based on a VR content and one or more induced network impairments (e.g., latency, packet loss, and/or jitter, as non-limiting examples). Using the same VR content and the client pose data set, the network computing device generates a source VR stream capture that is not subjected to the one or more induced network impairments. The network computing device performs a frame-by-frame comparison of the client-side VR stream capture and the source VR stream capture. Based on the frame-by-frame comparison, the network computing device generates a QoE metric that indicates a degree of degradation of the client-side VR stream capture relative to the source VR stream capture.

A user equipment, media control unit, media resource function, or another device or function capable of receiving, manipulating, and transmitting data may be configured to: receive an omnidirectional video; determine a viewport of a user equipment; determining a delivery mode; determine a region of the omnidirectional video based, at least partially, on the determined viewport and the determined delivery mode; encode the determined region; packetizing the encoded region; and transmit the packetized region to the user equipment based, at least partially, on the determined delivery mode.

Methods of managing audio data transmissions over a network disclosed herein may include the step of selecting a client device from a plurality of client devices as a participating device, each client device of the plurality of client devices being in data communication with a network. The methods may include the step of signaling the participating device over said network thereby initiating transmitting of audio data from the participating device at least in part over said network for live broadcasting, the audio data being indicative of a speaking voice being input into a participating device microphone of the participating device. The methods may include the step of minimizing latency in transmitting of the audio data by throttling data being communicated over said network by one or more client devices of the plurality of client devices only while the participating device is transmitting audio data over said network.

Methods of managing audio data transmissions over a network disclosed herein may include the step of selecting a client device from a plurality of client devices as a participating device, each client device of the plurality of client devices being in data communication with a network. The methods may include the step of signaling the participating device over said network thereby initiating transmitting of audio data from the participating device at least in part over said network for live broadcasting, the audio data being indicative of a speaking voice being input into a participating device microphone of the participating device. The methods may include the step of minimizing latency in transmitting of the audio data by throttling data being communicated over said network by one or more client devices of the plurality of client devices only while the participating device is transmitting audio data over said network.

A method for conducting a communications session comprising: displaying, by a client device, a communications interface including a first canvas, a second canvas, and a content browser, wherein: the first canvas is arranged to display a media stream, the second canvas is arranged to display a sequence of content items provided by a communications system, and the content browser is arranged to display identifiers for one or more document files that are associated with the communications session; detecting a first input that selects a document file from the content browser; in response to the first input, transmitting, from the client device to the communications system, an instruction to provide a new sequence of content items that corresponds to the document file; and displaying the new sequence of content items in the second canvas, wherein each content item in the new sequence is generated by converting a different portion of the document file from a document format to another format, wherein at least one of the document files identified in the content browser is associated with the communications session before the communications session is started, and the content browser is displayed during the communications session.