Webcast

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The word webcast is derived from "web" and "broadcast". Its use has varied since the early-mid 1990s as the nature of the medium came into public use.

Webcasting is sending audio and/or video live over the Internet. In essence, webcasting can be thought of as broadcasting over the Internet.

1 Usage
2 Origins
3 Examples
4 See also
5 External links

[edit] Usage

The generally accepted use of the term webcast is the "transmission of linear audio or video content over the Internet".

A webcast uses streaming media technology to take a single content source and distribute it to many simultaneous listeners/viewers.

The largest "webcasters" include existing radio and TV stations who "simulcast" their output, as well as a multitude of Internet only "stations". The term webcasting is usually reserved for referring to non-interactive linear streams or live events.

Rights and licensing bodies offer specific "Webcasting licenses" to those wishing to carry out Internet broadcasting using copyright material.

Webcasting is also used extensively in the commercial sector for investor relations presentations (such as Annual General Meetings), in E-learning (to transmit seminars), and for related communications activities. However, webcasting does not bear much, if any, relationship to the idea of Web conferencing which is designed for many-to-many interaction.

The ability to webcast using cheap/accessible technology has allowed independent media to flourish. There are many notable independent shows that broadcast regularly online. Often produced by average citizens in their homes they cover many interests and topics; from the mundane to the bizarre. Webcasts relating to computers, technology, and news are particularly popular and many new shows are added regularly.

[edit] Origins

"Webcasting" was conceived, first publicly described and presented by Brian Raila of GTE Laboratories at InterTainment '89, 1989, held in New York City, USA. Raila recognized that a viewer/listener need not download the entirety of a program to view/listen to a portion thereof, so long as the receiving device ("client computer") could, over time, recieve and present data more rapidly than the user could digest same. Raila used the term "buffered media" to describe this concept.

Raila was joined by James Paschetto of GTE Laboratories to further demonstrate the concept. Paschetto was singularly responsible for the first workable prototype of streaming media, which Raila presented and demonstrated at the Voice Mail Association of Europe 1995 Fall Meeting of October, 1995, in Montreux, Switzerland.

The term webcasting was coined (in the early/mid 1990s) when webcast/streaming pioneers Mark Cuban (Audionet), Howard Gordon (Xing Technologies), William Mutual (ITV.net) and Peggy Miles (InterVox Communications) got together with a community of webcasters to pick a term to describe the technology of sending audio and video on the Net...that might make sense to people. The term netcasting was a consideration, but one of the early webcast community members owned a company called NetCast, so that term was not used, seeking a name that would not be branded to one company. Discussions were also conducted about the term with the National Association of Broadcasters for their books - Internet Age Broadcaster I and II, written by Peggy Miles and Dean Sakai.

[edit] Examples

Virtually all the major broadcasters have a webcast of their output, from the BBC to CNN to Al Jazeera to UNTV Webcast in television to Radio China, Vatican Radio, United Nations Radio and the World Service in radio.

A notable webcast took place in September 1999 to launch NetAid, a project to promote Internet use in the world's poorest countries. Three high profile concerts were to be broadcast simultaneously on the BBC, MTV and over the Internet; a London concert at Wembley Stadium featuring the likes of Robbie Williams, George Michael; a New York concert featuring Bono of U2 and Wyclef Jean; a Geneva concert.

More recently, Live8 (AOL) claimed around 170,000 concurrent viewers (up to 400 Kbit/s) and the BBC received about the same (10 Gbit/s) on the day of the 7 July 2005 bombings in London. The growth of webcast traffic has roughly doubled, year on year, since 1995 and is directly linked to broadband penetration.

In the corporate world companies like Interactive Video Technologies [1], ON24 [2], Accordent [3], GoodMood [4]and Sonic Foundry [5]sell software and/or services to run live and on-demand webcasts with synchronized information such as PowerPoint slides, Polls, Question & Answer sessions, etc. The popularity of this type of interactive presentation has exploded and almost every mid to large size corporation is using webcasting for training, corporate communications, marketing, etc.

[edit] See also

[edit] External links

IWA (The International Webcasting Association, founded 1996) - IWA WebcastingWiki
Webcasting Exchange - Short articles on webcasting
Webcasts - Resources on webcasts
Webcast Listings - Publicly available webcasts
Webcasters United - Resources and information for webcasters
Webcast Academy Training community for the beginner webcasterde:Webcast