Client-side http retrieval method for time segments in ogg format identified by uri

Abstract

Disclosed is a client-side HTTP retrieval method for an Ogg format time fragment identified by a URI, including: parsing the URI of the fragment, obtaining the URI of the main resource of the fragment and the time interval of the fragment; requesting and obtaining the header byte of the main resource from the server; using The half search method requests the server to map the time interval of the segment to the byte range of the segment; requests the server and obtains the mapped segment byte range; modifies the position information of each data page in the segment byte range , and synthesized with the header bytes into a fragment resource file. The client-side HTTP retrieval method of the Ogg format time segment identified by the public URI can support the W3C media segment URI 1.0 standard. The client uses the half search method to request a small number of bytes from the traditional server and then completes the time segment URI to its main resource. Byte range mapping, and after obtaining the byte range from the traditional server, generate media segment files (to support various multiplexing of segments), thus greatly saving network communication bandwidth and shortening communication delay.

Description

technical field [0001] The invention relates to the technical field of multimedia communication, in particular to a client HTTP retrieval method for an Ogg format time segment identified by a URI. Background technique [0002] Multimedia resources such as images, audio and video are important information resources on the World Wide Web (Web). In particular, Web 2.0 applications that have emerged in recent years (such as: YouTube, Youku, etc. for sharing video resources) have produced a large number of Web social media resources. However, various media resources have always been "second-class citizens" of the Web, that is, they must be embedded in other Web resources (such as HTML pages), and only after the interaction and decoding of "plugin" software can the audio-visual content be accessed by Web users. Consumption. In order to make multimedia resources become "first-class citizens", the maker of Web infrastructure technical standards - World Wide Web Consortium (W3C) is...

AI Technical Summary

Problems solved by technology

[0016] More recently, some parts support the HTML5 standard (see: Ian Hickson, Robin Berjon, SteveFaulkner, Travis Leithead, Erika Doyle Navara, Edward O'Connor, Silvia Pfeiffer (Editors). HTML5: A vocabulary and associated APIs for HTML and XHTML. W3C Recommendation, 28October 2014. http: / / www.w3.org / TR / html5 / ) The latest version of the browser (such as: Mozilla Firefox and Google Chrome, etc.) can partially support the online playback of the time segment identified by the media segment URI 1.0, which is insufficient The disadvantage is that it only partially supports the time segment URI 1.0 syntax, and can only play the time segment online, and cannot allow the client to extract and obtain the time segment resource file, so it cannot further support the implementation of the W3C "Media Fragment Use Cases and Requirements (Draft) Practical use cases for the various snippets requested in

The main defects of the patented technical solution of this invention include: it does not support W3C's "Media Fragment URI 1.0 (Basic) Standard" at all; it can only play multimedia files online, and cannot enable the client to obtain time fragment resource files; And between the playback unit and the download unit of the client, complex interactions need to be constantly carried out; only the steps of downloading, parsing the header information of the multimedia file and obtaining the download location of the multimedia data are described macroscopically (not enough to illustrate that its technical solution is aimed at various implementability and practicability of multimedia formats), in particular, did not specifically describe the technical solutions for full-index (such as MP4) and non-full-index (such as Ogg) container format media resource time segments, and did not specifically give the corresponding HTTP Request / Response Protocol Steps

[0018] Inventors Xu Zhuoming, Wu Ting, Ni Lixian, He Wenjie, Zhuang Yuanhang, Wang Junhua, Wu Lili's Chinese invention patent application, application publication number: CN103747065A; application publication date: 2014.04.23; invention publication name: "Client HTTP search full index container Format media resource time segment method", discloses a method for a client HTTP retrieval of a media resource time segment in a full-index container format, and the method cannot implement the Ogg format identified by a URI (a typical non-full index container format) Client-side HTTP retrieval of time slices

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