What is webcasting?
Different from Video Conferencing?
What are the drivers?
Key market technologies
ProLearn Live Trails
ProLearn Summer School 2006
Basic audio-visual equipment for webcasting
Audio-Visual Webcasting Tips
Focusing on desktop PC webcasting
there are four different commercial technologies (Windows Media,
Real, QuickTime and Flash) widely available, plus a range of other
technologies which tend to be locked into a specific hardware/software
solutions, or use specific delivery methods for such as IPTV. In
addition, there are open standards such as the MPEG series. All
of the modern technologies have licensing requirements, largely
through patents on compression (codec) technologies which to be
taken into consideration, as typically there are fees associated
with the licenses.
The Prolearn TV study discussed here has focused largely on using
QuickTime technology for webcast delivery over the Internet.
QuickTime provides support for the MPEG4 and 3GPP streaming standards,
its streaming server technology is available as open source. It
uses standards based RTSP for network delivery. Windows Media and
both also currently support this. Flash webcasting at present is
of limited video quality for webcast uses, however recent improvements
could see Live webcasting using Flash increase in popularity.