Abstract: An image processing method includes performing horizontal division and vertical division on a longitude-latitude map or a sphere map of a to-be-processed image to obtain sub-areas of the longitude-latitude map or the sphere map, where a division location of the horizontal division is a preset latitude, a division location of the vertical division is determined by a latitude, there are at least two types of vertical division intervals in an area formed by adjacent division locations of the horizontal division, and a vertical division interval is a distance between adjacent division locations of the vertical division, and encoding images of the sub-areas.

Abstract: This application provides a media data transmission method and an apparatus. The method includes: A client sends first information to a server. The client receives video data packets that correspond to a second target video picture and that are sent by the server. The first information is used to indicate spatial information of a region in which a first target video picture is located, and the first target video picture includes a video picture within a current viewport. The second target video picture includes the first target video picture, at least one of the video data packets corresponding to the second target video picture carries at least one piece of second information, and the second information is used to indicate spatial information of a region in which the second target video picture is located.

Abstract: This application provides a video processing method and apparatus. The method includes: adding, by a server, perception attribute information of an object and spatial location information of the object to a video bitstream or a video file, and encapsulating the video bitstream or the video file, where the perception attribute information is used to indicate a property presented when the object is perceived by a user; and obtaining, by a terminal device, the video bitstream or the video file that carries the perception attribute information of the object and the spatial location information of the object, and performing perception rendering on a perception attribute of the object based on behavior of the user, the perception attribute information of the object and the spatial location information of the object.

Abstract: An image processing method includes determining, based on a coordinate position of a to-be-interpolated sample in a target image, a first coordinate position of the to-be-interpolated sample in a source image, determining m reference samples based on the first coordinate position, determining an interpolation weight of each of the m reference samples for the to-be-interpolated sample based on a spherical distance between a coordinate position of each of the m reference samples and the first coordinate position, and determining a pixel value of the to-be-interpolated sample based on a pixel value corresponding to each of the m reference samples and the interpolation weight of each of the m reference samples for the to-be-interpolated sample to obtain the target image.

Abstract: A method comprises obtaining media content associated with a first viewpoint and a second viewpoint, wherein a first position of the first viewpoint is static and a second position of the second viewpoint is dynamic; generating a first VWPT descriptor based on the media content and describing the first viewpoint; generating a second VWPT descriptor based on the media content and describing the second viewpoint; generating an MPD comprising the first VWPT descriptor and the second VWPT descriptor; and transmitting the MPD.

Abstract: The present disclosure disclose example video stream transmission methods and related devices and systems. One example method includes sending, by a client, a target request to a server, where the target request includes information about a corresponding target spatial location of a target spatial object that needs to be presented upon request by the client in a virtual reality VR content component. A target request feedback by which the server responds to the target request is received by the client, where the target request feedback includes information about a multiplex video stream that is obtained by performing preset multiplexing processing on an original video stream corresponding to the target spatial object. Video parsing and presentation based on the information about the multiplex video stream is performed by the client.

Abstract: A media information processing method includes obtaining media description information, where the media description information includes description information of at least two bitstreams corresponding to a first picture area, any one of the at least two bitstreams has an access point different in time from an access point of another bitstream in the at least two bitstreams, the at least two bitstreams are bitstreams obtained by separately encoding picture content of the first picture subarea, and time periods corresponding to the picture content separately encoded by the at least two bitstreams overlap, and determining, based on the media description information, a to-be-played first target bitstream, where the first target bitstream is one of the at least two bitstreams.

Abstract: Example video data processing methods and apparatus are disclosed. One example method includes obtaining viewport information by a server. The server obtains spatial object information based on the viewport information, where the spatial object information is used to describe a specified spatial object in panoramic space. The server obtains a first bitstream, where the first bitstream is obtained by encoding image data in the specified spatial object. The server obtains a second bitstream, where the second bitstream is obtained by encoding image data in the panoramic space. The server transmits the first bitstream and the second bitstream to a client.

Abstract: A method mechanism for streaming multi-viewpoint virtual reality (VR) content via Dynamic Adaptive Streaming over Hypertext Transfer Protocol (HTTP) (DASH) is disclosed. The mechanism includes receiving media content including a VR video sequence. A DASH Media Presentation Description (MPD) is generated. The MPD includes an indication specifying that a portion of the media content that is related to a first viewpoint is associated with a timed metadata representation. A request is received from a client for the media content. The DASH MPD, including the indication, is transmitted to the client in response to receiving the request to support communication of the media content to the client.

Abstract: A media information processing method includes obtaining sub-bitstream data, where the sub-bitstream data includes indication information, and the indication information is used to indicate an amount of tile data included in the sub-bitstream data, or the indication information is used to indicate whether the sub-bitstream data can be used for splicing, and processing the sub-bitstream data based on the indication information.

Abstract: A video picture encoding and decoding method, including obtaining a primary sub-region bitstream corresponding to a target sub-picture of a panoramic picture, where the primary sub-region bitstream includes N secondary sub-region bitstreams, and N is a positive integer, parsing the primary sub-region bitstream to obtain a reconstructed picture, performing cross-sub-region-boundary out-loop filtering on the reconstructed picture when an out-loop filtering identifier instructs to perform cross-sub-region-boundary out-loop filtering on the reconstructed picture, to obtain a filtered reconstructed picture, and adjusting a location of at least one of N sub-regions in the filtered reconstructed picture to obtain a picture having no sub-region boundary.

Abstract: A video picture processing method includes: sampling an initial picture, to obtain a target picture; dividing the target picture, to obtain a plurality of sub-pictures; extending picture borders of a first-category sub-picture, to obtain an extended first-category sub-picture; downsampling the extended first-category sub-picture, to obtain a downsampled first-category sub-picture; encoding a second-category sub-picture and the downsampled first-category sub-picture, to obtain bitstreams; and writing location information and extension information of the plurality of sub-pictures into the bitstreams, where extension information of the first-category sub-picture is used to indicate that the picture borders of the first-category sub-picture have been extended and indicate extension widths of the picture borders, and extension information of the second-category sub-picture is used to indicate that picture borders of the second-category sub-picture have not been extended.

Abstract: Example video data processing methods and apparatus are disclosed. One example method includes obtaining viewport information by a server. The server obtains spatial object information based on the viewport information, where the spatial object information is used to describe a specified spatial object in panoramic space. The server obtains a first bitstream that is obtained by encoding image data in the specified spatial object. The server obtains a second bitstream that is obtained by encoding image data in the panoramic space. The server transmits the first bitstream and the second bitstream to a client.

Abstract: An image processing method includes performing horizontal division and vertical division on a longitude-latitude map or a sphere map of a to-be-processed image to obtain sub-areas of the longitude-latitude map or the sphere map, where a division location of the horizontal division is a preset latitude, a division location of the vertical division is determined by a latitude, there are at least two types of vertical division intervals in an area formed by adjacent division locations of the horizontal division, and a vertical division interval is a distance between adjacent division locations of the vertical division, and encoding images of the sub-areas.

Abstract: This application provides a media data processing method and apparatus. The method includes a step of obtaining bitstream data, where the bitstream data includes region type information. The region type information is used to indicate a description manner of a location of a target region on a sphere, and the description manner includes a point description manner or a surface description manner. The method further includes parsing the bitstream data to obtain region location information corresponding to the description manner, where the region location information is used to indicate the location of the target region on the sphere. Media data corresponding to the target region is then obtained and the media data is processed based on the region type information and the region location information. This application improves flexibility in acquiring target region location information during omnidirectional media presentation.

Abstract: The present disclosure disclose a media information processing method and apparatus. The method includes: obtaining metadata information of media data, where the metadata information includes source information of metadata, the source information is used to indicate a recommender of the media data, and the media data is omnidirectional media data; and processing the media data based on the source information of the metadata. According to the media information processing method and apparatus in the embodiments of the present disclosure, information about the recommender of the media data may be used as a reference for a client during data processing, thereby increasing choices for a user and improving user experience.

Abstract: A method of presenting video information includes obtaining video content data and auxiliary data. The video content data is configured to reconstruct a video picture, the video picture includes at least two picture regions, and the auxiliary data includes quality information of the at least two picture regions. The method also includes determining a presentation manner of the video content data based on the auxiliary data, and presenting the video picture in the presentation manner of the video content data.

Abstract: A video image presentation and encapsulation method includes: obtaining a bit stream of a first video image; parsing the bit stream, and determining the first video image and first information of the first video image, where the first information is used to indicate whether the first video image is presented as a continuous area; and presenting the first video image based on the first video image and the first information. In this application, the first video image can be better presented based on the first information of the first video image.

Abstract: A method for adaptive streaming of a media content, wherein the method comprises receiving a media presentation description that provides presentation information for the media content, determining a plurality of representations from the media presentation description that comprise segments that are provided with bitrate and quality information, selecting a media segment that meets a desired quality level to download from one of the representations, updating a buffered media time for downloading the media segment, and determining when to switch to another representation by comparing the buffered media time to a switching threshold value.

Abstract: Embodiments of the present invention describe streaming media transmission methods and apparatus applied to a virtual reality technology. A method for streaming media transmissions may include sending a media information obtaining request to a server, where the media information obtaining request includes client capability information and auxiliary information, the client capability information indicates that the client supports reception of data pushed by the server, and the auxiliary information indicates an attribute that the client supports virtual reality presentation. The method may also include receiving a media presentation description and media data, where the media presentation description and the media data are sent by the server after the server responds to the media information obtaining request.