Implementation method of embedded Web VOD system TTTK (original)

Implementation method of embedded Web VOD system TTTK (original)

Keywords RealPlayer, embedded, streaming media, network transmission, Php,dhtml,activex

In recent years, the name of video-on-demand VOD (video on Demand) appears more and more in the media. VOD technology enables people to according to their own interests, without the use of video recorders, DVD players, cable TV and on the computer or television free on demand in the program library of the videos and information, is the content of the video program can be freely selected interactive system.
The essence of VOD is that the users of information actively obtain multimedia information according to their own needs, which differs from the biggest difference of information release: One is initiative, the other is selectivity. In a sense this is the recipient of information in accordance with their own needs for self-improvement and self-development of the way in today's information society will be more and more in line with the needs of consumers, it can be said that VOD is the future of information acquisition mainstream mode in multimedia video audio performance. The concept of VOD will be expanded rapidly in the field of information acquisition, and has an unlimited and broad development prospects.
Background
The author of the unit building has an internal website, in order to further improve the availability of the network, improve the function of the website, decided to provide VOD on the network function. After a period of exploration and comparison, the author finally selected the Realsystem company's RealPlayer as a video file playback tool, mainly based on the following considerations:
1, RealPlayer support the majority of today's audio and video streaming media format, including the current popular MP3 audio medium;
2, RealPlayer the default. rm format to ensure playback quality at the same time, file compression ratio, so that it is more conducive to network transmission;
3, RealPlayer on the Internet has a wide range of user groups and service provider support.
You can also choose from Microsoft's MediaPlayer, APPLE's QuickTime, and so on. Please refer to "Search the new Network" evaluation article: "Three major stream media technology comparison" (http://www.souxin.com/stream/txt/3_stream_comp/www.souxin.com.htm)

"Selection of Playback mode"
In general, after installing the RealPlayer, there are two ways to connect to the video file. One is directly on the Web page to provide a video file URL address, when the user clicks on the link, RealPlayer automatic recognition and real-time connection to play; the second way is to embed the RealPlayer object in a Web page through an ActiveX control. Through DHTML, the video stream URL is dynamically assigned to the embedded object, which provides a unified and friendly interface for video playback.
The previous method is relatively simple for the designer and only needs to provide the playback path for the video file. RealPlayer skilled users, but also through the custom RealPlayer play mode, download Visual Plug-ins, add to Favorites and other ways of video management. But there are several drawbacks to this approach: