This application discloses a video playing method, apparatus, and system, and a computer storage medium, which belongs to the field of video processing technologies. In this application, after receiving the rotation fragment, the terminal decodes the rotation fragment, so that surround playing of a video picture can be implemented, and resolution of a played video picture can be the same as resolution of the video picture in the rotation fragment. This application is not limited by a quantity of cameras used for front-end shooting, and is widely applied.

A method performed by an electronic device for requesting tiles relating to a viewport of an ongoing omnidirectional video stream is provided. The ongoing omnidirectional video stream is provided by a server to be displayed to a user of the electronic device. The electronic device predicts for an impending time period, a future head gaze of the user in relation to a current head gaze of the user, based on: A current head gaze relative to a position of shoulders of the user, a limitation of the head gaze of the user bounded by the shoulders position of the user, and a current eye gaze and eye movements of the user. The electronic device then sends a request to the server. The request requests tiles relating to the viewport for the impending time period, selected based on the predicted future head gaze of the user.

The embodiments relate to a method including generating a bitstream defining a presentation including an omnidirectional visual media content; encoding into the bitstream a parameter to indicate viewport-control options for viewing the presentation, wherein the viewport-control options includes options controllable by a receiving device and options not-controllable by the receiving device and sending the bitstream to the receiver device; receiving one of the indicated viewport-control options from the receiver device as a response; streaming the presentation to the receiver device; when the response has included an indication on a viewport-control controllable by the receiving device, the method also includes receiving information on viewport definitions from the receiver device during streaming of the presentation and adapting the presentation accordingly; when the response has included an indication on a viewport-control not- controllable by the receiving device, the presentation is streamed to the receiver device according to the viewport-control specified in the response.

A method of encapsulating an encoded bitstream representing one or more images, the encapsulated bitstream comprising a data part and a metadata part. The method including providing image item information identifying a portion of the data part representing a sub-image or an image of a single image; providing image description information comprising parameters including display parameters and/or transformation operators relating to one or more images and outputting said bitstream together with said provided information as an encapsulated data file, wherein the image description information is stored in the metadata part.

The present disclosure relates to an image processing device and an image processing method for instantaneously displaying an image of a user's field of view.

An encoder encodes a celestial sphere image of a cube formed by images of multiple planes generated from omnidirectional images, the encoding being performed plane by plane at a high resolution, to generate a high-resolution encoded stream corresponding to each of the planes. The encoder further encodes, at a low resolution, the celestial sphere image to generate a low-resolution encoded stream. The present disclosure may be applied, for example, to image display systems that generate a celestial sphere image so as to display an image of the user's field of view derived therefrom.

The present disclosure relates to an image processing device and an image processing method for instantaneously displaying an image of a user's field of view.

An encoder encodes a celestial sphere image of a cube formed by images of multiple planes generated from omnidirectional images, the encoding being performed plane by plane at a high resolution, to generate a high-resolution encoded stream corresponding to each of the planes. The encoder further encodes, at a low resolution, the celestial sphere image to generate a low-resolution encoded stream. The present disclosure may be applied, for example, to image display systems that generate a celestial sphere image so as to display an image of the user's field of view derived therefrom.

A method for receiving a real-time video feed of a region of interest includes generating, at a processor of a first device, a request for a real-time video stream of the region of interest. The request indicates a location of the region of interest. The method also includes transmitting the request to one or more other devices via a network to query whether another device is situated to capture a portion of the region of interest. The method also includes receiving the real-time video stream of the region of interest from a second device of the one or more other devices. The second device includes a camera having a field of view that includes at least a portion of the region of interest.

Technology for a first multimedia telephony services over internet protocol (IP) multimedia subsystems (IMS) (MTSI) client operable to support region of interest (ROI) signaling with a second MTSI client is disclosed. The first MTSI client can identify a requested region of interest (ROI). The first MTSI client can encode the requested ROI for transmission to the second MTSI client via a real-time transport control protocol (RTCP) feedback message. The first MTSI client can decode encoded video received from the second MTSI client that corresponds to the requested ROI.

Technology for a first multimedia telephony services over internet protocol (IP) multimedia subsystems (IMS) (MTSI) client operable to support region of interest (ROI) signaling with a second MTSI client is disclosed. The first MTSI client can identify a requested region of interest (ROI). The first MTSI client can encode the requested ROI for transmission to the second MTSI client via a real-time transport control protocol (RTCP) feedback message. The first MTSI client can decode encoded video received from the second MTSI client that corresponds to the requested ROI.

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.