Shanghai Bilibili Technology Co., Ltd.

Zhaoxin Tan

Jianqiang Ding

Hao Liu

Wenjie Fan

Hui Chen

Sheng Wang

Zhiqiang Wu

Hanchao Zheng

Chaoran Li

Qi Tang

Huan Xu

Junxing Tang

Xiuran Wu

Fan Lan

Weijia Li

Jingqiang Zhang

Xiaofeng Ji

Jianqiang Zhang

Junyi Wu

Huyang Sun

Kan Hu

Qiuran Tian

Yifei Pei

Yuxuan Gao

Fuling Chen

Dejun Shan

Jiangiang Ding

The present application discloses a method for rendering a panoramic video. The method includes obtaining a current frame of image from a video source, and generating texture map data, where the generating texture map data comprises determining a viewpoint region based on a field of view of a perspective camera, and rendering image pixels outside the viewpoint region at a lower resolution than rendering image pixels within the viewpoint region; mapping the current frame of image to a three-dimensional image based on a spherical rendering model the texture map data; and projecting the three-dimensional image onto a two-dimensional screen.

Method and system for rendering panoramic video

This application discloses a Web-end video playback method and apparatus, and a computer device. The method includes: obtaining to-be-played FLV-format video data; decapsulating the FLV-format video data by using a preset WebAssembly bytecode to obtain effective video data, and storing the effective video data into a preset doubly linked list; encapsulating the effective video data in the doubly linked list using the WebAssembly bytecode to obtain FMP4-format video data; and loading, through media source extensions, the FMP4-format video data to a Web-end video player for playback. This application further provides a computer-readable storage medium. In this application, different video data is decapsulated and encapsulated using the WebAssembly bytecode, and then new-format video data is loaded through media source extensions. This reduces occupation of processing resources in a Web-end video data processing process and improves processing efficiency.

Web-end video playing method and apparatus, and computer device

A method of optimizing playback, the method including: determining whether a player is in a freezing state; obtaining freezing information of the player when the player is in the freezing state; and determining a freezing type based on the freezing information, wherein the freezing type is used to instruct the player to perform a corresponding optimization operation. According to the present application, a freezing classification may be performed based on the freezing information to obtain refined freezing types, and different optimization strategies may be formulated respectively based on the freezing types to implement playback optimization, thereby improving playback optimization effect and optimization efficiency and improving playback experience.

Playback optimization method and system

The present disclosure describes techniques of presenting audio/video (AV) files. The disclosed techniques include displaying a first interface, wherein the first interface comprises a list of a plurality of AV files and an editing area; generating a plot graph based at least in part on an input by a first user via the first interface, wherein the plot graph has a directed structure, and the at least one first type of AV file and the at least one second type of AV file are associated with different nodes of the plot graph; playing a first type of AV file; detecting that a preset instruction is received in response to determining that a playing progress of the first type of AV file reaches a first predetermined position; and playing another first type of AV file or a second type of AV file based on the preset instruction.

Method and device of presenting audio/video files, computing device, and readable storage medium

The present disclosure provides techniques of preloading video data. The techniques comprises acquiring a video to be played; acquiring information indicative of historical behaviors of users who watched the video; segmenting the video into a plurality of video segments; determining a historical search rate corresponding to each of the plurality of video segments based on the information indicative of the historical behaviors of the users; and determining a video segment among the plurality of video segments as a first target video segment based on the historical search rate corresponding to each of the plurality of video segments, wherein the video segment has a historical search rate greater than or equal to a preset probability threshold; and preloading the first target video segment of the video.

Video loading method and device

The present disclosure describes techniques of presenting bullet comments. The techniques comprise acquiring a page of playing a video; acquiring multiple pieces of original bullet screen data, wherein each piece of original bullet screen data comprises content of a bullet comment and timing information indicating a time of posting the bullet comment in the video; cloning the multiple pieces of original bullet screen data to obtain multiple pieces of bullet screen data corresponding to the plurality of pieces of original bullet comment data; acquiring multiple pieces of target bullet screen data from the multiple pieces of bullet screen data based on the timing information associated with each piece of original bullet comment data; and content comprised in at least one of the plurality of pieces of target bullet comment data in an area of the page configured to display bullet comments.

Bullet comment presentation method and system

A method of determining video resolution is provided. The method of determining video resolution includes: determining a CDN corresponding to a video to be played in response to a video loading signal; acquiring a history network speed corresponding to the CDN; and determining an initial resolution of the video to be played according to the history network speed corresponding to the CDN. A computing device, and a non-transitory computer-program product are also provided.

Method of determining video resolution, computing device, and computer-program product

A method is provided. The method includes: obtaining multiple association relationships, wherein each association relationship includes a resolution switching algorithm and a historical freeze rate; determining a historical freeze rate meeting a preset condition from the multiple association relationships; and selecting a target resolution switching algorithm from a corresponding association relationship of the association relationships according to the historical freeze rate meeting the preset condition, wherein the target resolution switching algorithm is used for switching a resolution of a video. A system, a computing device, and a computer-program product are also provided.

Method for selecting resolution switching algorithm, computing device, and computer-program product

The present invention provides a method, device and storage medium of controlling video playing based on a video source selection and belongs to a field of the Internet technology. The method, device and storage medium of controlling video playing based on a video source selection of the present invention may determine a video source format adopted based on the browser, then filter the video source based on actual application effect of a player, adopt the optimal video source, and automatically select other video sources to continue playback in case of playback errors. The method, device and computer-readable storage medium of controlling video playing based on a video source selection of the present invention have the advantages of simple implementation mode, low application cost and wide application range.

Video playing control method, device and storage medium based on a video source selection

The present invention provides a method, a device and a computer-readable medium for a pseudo seamless switch between different video sources and belongs to a field of the Internet technology. According to the method, a device and a computer-readable medium for a pseudo seamless switch between different video sources of the present invention, when a video source needs to be switched, the Web browser first establishes a target video source playback instance; determines a synchronization duration based on a playing state of an original video source and a network state; after the synchronization duration, the Web browser switches to the target video source playback instance to achieve seamless switching between various video sources, so as to effectively avoid blocking during playback and greatly improve user experience. And the method, device and computer-readable medium for a pseudo seamless switch between different video sources of the present invention have the advantages of simple implementation, low application cost and wide application range.

Pseudo seamless switching method, device and media for web playing different video sources

Techniques of displaying comments relative to video frames are described herein. The disclosed techniques include obtaining page data comprising a video file and rendering the page data to play a video comprising a plurality of frames; obtaining a comment file comprising a plurality of comments on the video; displaying the plurality of comments relative to the plurality of frames while playing the video; detecting a computer performance parameter during rendering the page data; and reducing a density of displaying comments in response to determining that the computer performance parameter is less than a predetermined value.

Method and device of displaying video comments, computing device, and readable storage medium

A method of playing video is provided. The method includes: obtaining a video loading instruction and sending a loading request to a cache server, wherein the loading request is configured to request loading data, and the loading data includes at least one segment of the video corresponding to the video loading instruction; receiving the loading data from the cache server; and playing the at least one segment according to the loading data.

Method of playing video, computing device, and computer program product

A method of requesting video is provided. The method includes: sending a first video request to a server in response to a video playing instruction, wherein, the server returns a video description information segment and a corresponding complete video according to the first video request, and the video includes a plurality of video segments, and the video description information segment is configured to describe each of the video segments; parsing the video description information segment; and playing the video in segments according to the parsed video description information segment in the process of downloading the video. The present application also provides a computing device and a computer-program product.

Method of requesting video, computing device, and computer-program product

The present invention provides a method, device and computer-readable storage medium of intelligently buffering a Web video based on a browser, and belongs to a field of the Internet technology. The method, device and computer-readable storage medium of intelligently buffering a Web video based on a browser comprises a browser calculating an available buffer duration based on an available memory size of a buffer and a bit rate; initializing a player based on the available buffer duration; buffering and playing the video to be played using the player. So, the buffer duration can be set flexibly based on different browser platforms and an average bit rate of the video, which can maximize the use of a cache space, and effectively avoid the occurrence of sticking during video playback, and make better use of the bandwidth, so as to greatly improve the user experience.

Intelligent buffering method, device and storage medium of a web video based on a browser

A method of playing audio and video is provided. The method includes: obtaining a streaming media content to be encapsulated, and parsing the streaming media content to obtain audio parameter information and/or video parameter information; forming a Media Presentation Description (MPD) file in JavaScript Object Notation (JSON) format according to the audio parameter information and/or the video parameter information, wherein the MPD file in JSON format includes multiple streaming media content segments, each streaming media content segment includes a video segment and/or an audio segment, each of the video segment and the audio segment includes multiple arrays, and each array includes the audio parameter information or the video parameter information; sending the MPD file in JSON format to a client.

Growing community of inventors

Shanghai, China

Zhaoxin Tan