Customarily, the World Wide Web has been a one-way, publisher to reader, medium. The outstanding characteristic of Web 2.0 is that it is a bidirectional medium, where content (text, image, audio or video) is donated by people who interact with the website as well as people and organizations who manage the site – in other words, it is the “read/write web”. Therefore Web 2.0 can be termed as a medium describing the changing trends in the use of World Wide Web technology and web design that intends to improve creativity, information sharing, and collaboration among users. These notions have led to the growth and development of web-based communities and hosted services, such as social-networking sites, video sharing sites, wikis, blogs, and folksonomies

 

Most of the companies on the Internet are recommending attractive and useful applications checks supported on the Web 2.0 paradigm, comprising of blogs, wikis, office systems, social book marking etc. These are increasingly being accepted by computer users within the University, for administrative, teaching, learning and research functions. It is foreseeable that the information herein will be far from a complete or comprehensive guide to the issues. Web 2.0 websites permits users to do more than just recover information. They can generate on the interactive facilities of “Web 1.0″ to provide “Network as platform” computing, permitting users to run software-applications wholly through a browser.

 

Users can own the data on a Web 2.0 site and exercise control over that data. These sites may have an “Architecture of participation” that promotes users to add value to the function as they use it. This stands in difference to very old customary websites, the sort which limited visitors to sighting and whose content only the site’s owner could modify. Web 2.0 sites often feature a rich, user-friendly interface. It is predictable that the information herein will be far from an absolute or comprehensive guide to the issues. Whether we like it or not, media has a huge influence on us. We learn news and in exchange media gets to pitch us (gently) their points of view and their advertisements. The blogo sphere has a strong hold on the minds of early adopters. However, it is mainstream publications that reach millions of people - many of whom still know very little nothing about new web technologies.

 

Web 2.0 is just so much more than blogs, social networks, RSS, etc. Individually these technologies are far more insignificant than what they represent collectively. Over latest years the web has seen the enlargement of so-called “Web 2.0” services based approximately the notion of a two-way information flow, and the authorizing of individuals to generate and publish their own content and information through blogs, wikis, video sharing, and social networking services. Video content is frequently middle to these services, permitting the uploading and sharing of content produced by customers, along with the appearance of video advertising on the web.

 

Access to video content from a broader variety of devices including mobile phones, set top boxes, and games consoles is the next logical step, but offering these services with the best probable quality can be problematic. Mobile devices commonly have additional restrictions regarding the type of content they can support due to CPU, screen size, and power limitations. In disparity to PCs where new codes and media players can be easily installed or implanted into web browsers, many phones can sustain only a limited set of standardized codes as the decode and playback purposes are combined with hardware capabilities in the phone in order to reduce power drain.

 

The understandable solution to this problem is to utilize offline transcoding solutions combined with a content management platform to change the source content into a range of formats suitable for the mobile devices and network admission speed used by customers. This will probably engage changing the codes employed for audio and video reduction but can also engage transforming the video frame size, frame rate, and bit rate so that it can be properly played back. These files are then accessed by the mobile devices via a streaming server since in the majority of cases mobile phones do not have the storage capacity to hold and play back large media files as would often happen on PC/broadband devices.

 

As the variety of mobile devices is steadily enlarging, and the capabilities of these devices enhancing, it’s frequently essential to transcode an item of content into a broad range of arrangements in order to offer the best quality experience to the service subscribers. This can range from low bit rate, small frame versions of the file using basic codes such as H.263 to versions of the content aimed at more advanced phones that can support H.264 with larger image sizes over fast network connections such as HSDPA. This “breadth” in terms of device capabilities and network access rates is likely to develop into wider over time rather than thinner as new devices are being commenced steadily while old handsets stay in use for a number of years.

 

Using offline transcoding can be effectual when the number of devices to be maintained is small and the range or roil of content is low. However, when the range and varied of content sources become very large, this method can quickly become uncontrollable. usually, only a small percentage of these output files are ever accessed by customers (research has revealed approximately 5%), or many of the subscribers will access from only a small subset of mobile device types, signifying that much of the endeavor consumed in transcoding content was in effect wasted.

 

Instead of changing content into all of the needed formats when it is uploaded, the content is transcoded supported on demand for definite content by a subscriber and streamed directly to their device. The format for the media conveyed to the subscriber can be modified to the device in use and its network connection to offer the best possible experience for the subscriber. This approach positions additional demand on the transcoding system since it must not only be accomplished of carrying out high-quality media adaptation, but it must do this in a very time-efficient manner to guarantee that the customer can obtain media rapidly after they have made a request for a given item of content. The conversion should be carried out in real time or better to guarantee that a steady flow of media traffic is streamed for playback.