Fundamentals of Web Playback technology

Source: Internet
Author: User
Tags format object functions
Web page playback technology, as the name suggests, is the implementation of the Web page streaming media or local media applications. Creating a Web Player is not really "inventing" one or several players on a Web page. At present, all web players are still basically user-local Windows Media player (WMP) and real play a substantial role, that is, if the user does not have the local installation of WMP or real two true player software, "Web playback" Everything is empty talk. Here, we can define the next scientific definition of "web playback" technology.

The so-called web playback technology, is the form of Web page code to use the WMP or real player itself some functions, events and methods, such as pause, fast-forward, full-screen and so on, on the Web page to achieve a broadcast control of the media files. How much the web player functions depends on how much of the functions, events, and methods are used. A good web player is like WMP or real to a Web page, because the Web player has the most control of the user's local WMP or true. The typical representative is the bbsvisual for LRC produced by the spectral music. We can go to http://aboutplayer.com/bbs/cbo.htm to observe the demo (download please in Baidu or Google input bbsvisual can), as for the detailed process deduction, the spectral music will be in the " Advanced Series "In the step-by-step with the common one by one discussion.

There are roughly two main types of web player representations.

One type we call her simple, features simple, single play. The simple type does not need the complex code and the language, the BBS commonly used UBB code in the media playback belongs to this kind. The effect is as follows.

One class we call the expansion type, the characteristic is the function complete, the continuous playback. bbsvisual for LRC belongs to this category. Extension can be divided into two small categories, a common form of web pages, such as bbsvisual for LRC , a class of Flash SWF file format, such as http://aboutplayer.com/bbs/flash.asp .

The extended type combines JavaScript or VbScript language to play control on the Web page.

There is also a rare, it is on the Web page to achieve the Winamp playback control, the principle of the above is consistent with the story.

Media files that apply to the playback of a Web page can be either video or audio. Can be WMP compatible WMA, WMV, mms://and other formats, can also be real compatible with RAM, RM, rtsp://and other formats, can also be SWF, FLV and other Flash file formats, JPG, GIF, PNG and other picture file format.

The Spectrum Music column is to be drawn from the function of the player, events and methods, "simple Web player methods and Applications", "extended web player methods and Applications" and "synchronized lyrics" and so on, step-by-Step on the Web page playback technology, some topics may be divided into a number of sections to be discussed. such as "Sync lyrics" on the plan to have real dedicated SMIL, WMP dedicated SMI and the two general LRC three bars. "Simple Web Player method and application" includes pop-up window of the Web player production and so on. "Extended web Player method and application" includes the forum embedded player six methods.



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