Both a conventional receiver and an HDR-compatible receiver well perform electro-optical conversion processing on transmission video data obtained by using an HDR opto-electronic transfer characteristic. High dynamic range opto-electronic conversion is performed on high dynamic range video data to obtain the transmission video data. Encoding processing is performed on this transmission video data to obtain a video stream. A container of a predetermined format including this video stream is transmitted. Metadata information indicating a standard dynamic range opto-electronic transfer characteristic is inserted into a layer of the video stream, and metadata information indicating a high dynamic range opto-electronic transfer characteristic is inserted into at least one of the layer of the video stream and a layer of the container.

Devices, computer-readable media, and methods for presenting segments of at least one video program in accordance with a definition document are disclosed. For example, a processor may load a definition document for at least one video program. The definition document may specify segments of the at least one video program for presentation and further specify segment types for the segments. The segment types may identify whether a segment is to include video content, include audio content, or include both video and audio content. The processor may further obtain the at least one video program, present a first segment of the at least one video program in accordance with the definition document, and present a second segment of the plurality of segments of the at least one video program in accordance with the definition document.

Devices, computer-readable media, and methods for presenting segments of at least one video program in accordance with a definition document are disclosed. For example, a processor may load a definition document for at least one video program. The definition document may specify segments of the at least one video program for presentation and further specify segment types for the segments. The segment types may identify whether a segment is to include video content, include audio content, or include both video and audio content. The processor may further obtain the at least one video program, present a first segment of the at least one video program in accordance with the definition document, and present a second segment of the plurality of segments of the at least one video program in accordance with the definition document.

An example device for processing media data is configured to parse a bitstream including the media data, the bitstream being formatted according to Common Media Application Format (CMAF), detect, during the parsing, a file type (FTYP) value for a CMAF track file of the bitstream, determine that a CMAF header of the CMAF track file starts with the FTYP value, and process one or more CMAF fragments following the CMAF header of the CMAF track file. The device may additionally be configured to detect one or more segment type (STYP) values in the bitstream, determine that each of the one or more STYP values corresponds to a start of a respective one of the CMAF fragments, and process each of the CMAF fragments starting from the corresponding STYP value.

An example device for processing media data is configured to parse a bitstream including the media data, the bitstream being formatted according to Common Media Application Format (CMAF), detect, during the parsing, a file type (FTYP) value for a CMAF track file of the bitstream, determine that a CMAF header of the CMAF track file starts with the FTYP value, and process one or more CMAF fragments following the CMAF header of the CMAF track file. The device may additionally be configured to detect one or more segment type (STYP) values in the bitstream, determine that each of the one or more STYP values corresponds to a start of a respective one of the CMAF fragments, and process each of the CMAF fragments starting from the corresponding STYP value.

A method and system for providing synchronized input feedback, comprising receiving an input event, encoding the input event in an output stream wherein the encoding of the input event is synchronized to a specific event and reproducing the output stream through an output device whereby the encoded input event in the reproduced output stream is imperceptible to the user.

Embodiments herein provide techniques for signaling of priority information (e.g., priority ranking) and/or quality information in a timed metadata track associated with point cloud content. For example, embodiments include procedures for signaling of priority information and/or quality information in a timed metadata track to support viewport-dependent distribution of point cloud content, e.g., based on MPEG's International Organization for Standardization (ISO) Base Media File Format (ISOBMFF). In some embodiments, metadata samples of the timed metadata track may include priority information and/or quality information for a point cloud bounding box of a point cloud media presentation (e.g., for one or more point cloud objects in the point cloud bounding box). Other embodiments may be described and claimed.

A system control apparatus for acquiring a prototype manifest file that is a basis of a manifest file to be transmitted to a viewing client in a system for delivering video data over a network, includes: an estimation unit configured to analyze content of a prototype manifest file acquired from an origin server, to determine a next acquisition timing of the prototype manifest file; and an acquisition unit configured to acquire the prototype manifest file from the origin server, based on the next acquisition timing determined by the estimation unit.

A system control apparatus for acquiring a prototype manifest file that is a basis of a manifest file to be transmitted to a viewing client in a system for delivering video data over a network, includes: an estimation unit configured to analyze content of a prototype manifest file acquired from an origin server, to determine a next acquisition timing of the prototype manifest file; and an acquisition unit configured to acquire the prototype manifest file from the origin server, based on the next acquisition timing determined by the estimation unit.

A computer program, a method, and a server device, all of which enable a further reduction in the possibility of increasing of the load to perform display control, as compared to conventional technologies, are provided. The computer program, method, and server device involve: acquiring first data pertaining to an avatar existing in a virtual space and being operated using a terminal of a first user; receiving, via a communication line, second data pertaining to avatars belonging to one or more users other than the first user, existing in the virtual space, and being operated using terminals of the respective users, the first data containing the position of the avatar of the first user, the second data containing the position of the avatars of the one or more users and/or the total number of avatars located in a first region within the virtual space among the avatars of the one or more users; judging whether or not the position of the avatar of the first user or the second data fulfills a prescribed condition; determining, if the prescribed condition is fulfilled, control data for controlling a display screen of the terminal of the first user; and controlling the display screen according to the control data.