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A webcast is a media presentation distributed over the Internet using streaming media technology to distribute a single content source to many simultaneous listeners/viewers. Webcast_sentence_0

A webcast may either be distributed live or on demand. Webcast_sentence_1

Essentially, webcasting is "broadcasting" over the Internet. Webcast_sentence_2

The largest "webcasters" include existing radio and TV stations, who "simulcast" their output through online TV or online radio streaming, as well as a multitude of Internet only "stations". Webcast_sentence_3

Webcasting usually consists of providing non-interactive linear streams or events. Webcast_sentence_4

Rights and licensing bodies offer specific "webcasting licenses" to those wishing to carry out Internet broadcasting using copyrighted material. Webcast_sentence_5

Overview Webcast_section_0

Webcasting is 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. Webcast_sentence_6

However, webcasting does not bear much, if any, relationship to web conferencing, which is designed for many-to-many interaction. Webcast_sentence_7

The ability to webcast using cheap/accessible technology has allowed independent media to flourish. Webcast_sentence_8

There are many notable independent shows that broadcast regularly online. Webcast_sentence_9

Often produced by average citizens in their homes they cover many interests and topics. Webcast_sentence_10

Webcasts relating to computers, technology, and news are particularly popular and many new shows are added regularly. Webcast_sentence_11

Webcasting differs from podcasting in that webcasting refers to live streaming while podcasting simply refers to media files placed on the Internet. Webcast_sentence_12

History Webcast_section_1

The earliest graphically-oriented web broadcasts were not streaming video, but were in fact still frames which were photographed with a web camera every few minutes while they were being broadcast live over the Internet. Webcast_sentence_13

One of the earliest instances of sequential live image broadcasting was in 1991 when a camera was set up next to the Trojan Room in the computer laboratory of the University of Cambridge. Webcast_sentence_14

It provided a live picture every few minutes of the office coffee pot to all desktop computers on that office's network. Webcast_sentence_15

A couple of years later its broadcasts went to the Internet, became known as the Trojan Room Coffee Pot webcam, and gained international notoriety as a feature of the fledgling World Wide Web. Webcast_sentence_16

Later in 1996 an American college student and conceptual artist, Jenny Ringley, set up a web camera similar to the Trojan Room Coffee Pot's webcam in her dorm room. Webcast_sentence_17

That webcam photographed her every few minutes while it broadcast those images live over the Internet upon a site called JenniCam. Webcast_sentence_18

Ringley wanted to portray all aspects of her lifestyle and the camera captured her doing almost everything – brushing her teeth, doing her laundry, and even having sex with her boyfriend. Webcast_sentence_19

Her website generated millions of hits upon the Internet, became a pay site in 1998, and spawned hundreds of female imitators who would then use streaming video to create a new billion dollar industry called camming, and brand themselves as camgirls or webcam models. Webcast_sentence_20

One of the earliest webcast equivalent of an online concert and one of the earliest examples of webcasting itself was by Apple Computer's Webcasting Group in partnership with the entrepreneurs Michael Dorf and Andrew Rasiej. Webcast_sentence_21

Together with David B. Pakman from Apple, they launched the Macintosh New York Music Festival from July 17–22, 1995. Webcast_sentence_22

This event audio webcast concerts from more than 15 clubs in New York City. Webcast_sentence_23

Apple later webcast a concert by Metallica on June 10, 1996 live from Slim's in San Francisco. Webcast_sentence_24

In 1995, Benford E. Standley produced one of the first audio/video webcasts in history. Webcast_sentence_25

On October 31, 1996, UK rock band Caduseus broadcast their one-hour concert from 11 pm to 12 midnight (UT) at Celtica in Machynlleth, Wales, UK – the first live streamed audio and simultaneous live streamed video multicast – around the globe to more than twenty direct "mirrors" in more than twenty countries. Webcast_sentence_26

In September 1997, Nebraska Public Television started webcasting Big Red Wrap Up from Lincoln, Nebraska which combined highlights from every Cornhusker football game, coverage of the coaches' weekly press conferences, analysis with Nebraska sportswriters, appearances by special guests and questions and answers with viewers. Webcast_sentence_27

On August 13, 1998, it is generally believed the first webcast wedding took place, between Alan K'necht and Carrie Silverman in Toronto Canada. Webcast_sentence_28

On October 22, 1998, the first Billy Graham Crusade was broadcast live to a worldwide audience from the Raymond James Stadium in Tampa Florida courtesy of Dale Ficken and the WebcastCenter in Pennsylvania. Webcast_sentence_29

The live signal was broadcast via satellite to PA, then encoded and streamed via the BGEA website. Webcast_sentence_30

The first teleconferenced/webcast wedding to date is believed to have occurred on December 31, 1998. Webcast_sentence_31

Dale Ficken and Lorrie Scarangella wed on this date as they stood in a church in Pennsylvania, and were married by Jerry Falwell while he sat in his office in Lynchburg, Virginia. Webcast_sentence_32

Virtually all major broadcasters now have a webcast of their output, from the BBC to CNN to Al Jazeera to UNTV in television to Radio China, Vatican Radio, United Nations Radio and the World Service in radio. Webcast_sentence_33

On November 4, 1994, Stef van der Ziel distributed the first live video images over the web from the Simplon venue in Groningen. Webcast_sentence_34

On November 7, 1994, WXYC, the college radio station of the University of North Carolina at Chapel Hill became the first radio station in the world to broadcast its signal over the internet. Webcast_sentence_35

Translated versions including Subtitling are now possible using SMIL Synchronized Multimedia Integration Language. Webcast_sentence_36

Wedcast Webcast_section_2

A webcast of a wedding may be called a wedcast; it allows family and friends of the couple to watch the wedding in real time on the Internet. Webcast_sentence_37

It is sometimes used for weddings in exotic locations, where it would be expensive or difficult for people to travel to see the wedding in person. Webcast_sentence_38

Webcasting a funeral is also a service provided by some funeral homes. Webcast_sentence_39

Although it has been around since at least 2005, cheaper broadband access, the financial strain of travel, and deployments to Iraq and Afghanistan have all led to increased use of the technology. Webcast_sentence_40

See also Webcast_section_3


Credits to the contents of this page go to the authors of the corresponding Wikipedia page: en.wikipedia.org/wiki/Webcast.