Client HTTP retrieval method for Ogg format time slices of URI

Abstract

The invention discloses a client HTTP (Hyper Text Transport Protocol) retrieval method for Ogg format time slices of URI (Uniform Resource Identifier), which comprises the following steps: parsing a fragment URI, and acquiring a primary resource URI of the fragment and a time interval of the fragment; requesting a sever and acquiring a header byte of the primary resource; applying a binary search algorithm to send a request to the server, so that the time interval of the fragment is mapped into a byte range of the fragment; requesting the server and acquiring the mapped byte range of the fragment; and modifying the position information of each data page within the byte range of the fragment, and combining with the header byte to form a fragment resource file. The disclosed client HTTP retrieval method for Ogg format time slices of URI can support the W3C media fragment URI 1.0 standard; the client applies the binary search algorithm to requesting a small amount of bytes from the traditional server and then completes the mapping of the time slice URI to the corresponding byte range in the primary resource, and generates a media fragment file (to support a variety of multiplexing of the fragment) after acquiring the byte range from the traditional server, so as to greatly save the network communication bandwidth and shorten the communication latency.

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, Steve Faulkner, 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, Its shortcoming is that it only partially supports the time segment URI 1.0 syntax, and it 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 ( Actual use cases for the various fragments required in the draft)

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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