Videoconferencing | Wikipedia audio article
Channel: wikipedia tts
Date: 08/01/2019

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Videotelephony


00:02:58 1 History
00:13:43 2 Major categories
00:17:05 2.1 Categories by cost and quality of service
00:19:30 3 Security concerns
00:20:04 4 Adoption
00:26:53 5 Technology
00:27:03 5.1 Components and types
00:31:51 5.2 Videoconferencing modes
00:32:54 5.3 Echo cancellation
00:33:49 5.4 Bandwidth requirements
00:36:13 5.5 Standards
00:38:43 5.6 Call setup
00:41:52 5.7 Conferencing layers
00:44:13 5.8 Multipoint videoconferencing
00:47:38 5.9 Cloud-based video conferencing
00:48:28 6 Impact
00:53:10 6.1 Impact on government and law
00:55:29 6.2 Impact on education
00:58:22 6.3 Impact on medicine and health
01:00:08 6.4 Impact on business
01:04:05 6.5 Impact on media relations
01:05:42 6.6 Use in sign language communications
01:06:56 6.6.1 21st century improvements
01:08:20 6.6.2 Present day usage
01:12:10 7 Descriptive names and terminology
01:17:06 8 Popular culture
01:24:59 9 See also
01:26:08 10 Notes
01:26:17 11 Bibliography
01:30:12 12 Further reading
01:30:22 12.1 Unsorted
01:33:55 12.2 General
01:37:08 12.3 Environmental benefitssup&#91;ispandubious
01:38:01 12.4 Historical and technical
01:40:43 13 External links



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SUMMARY
=======
Videotelephony comprises the technologies for the reception and transmission of audio-video signals by users at different locations, for communication between people in real-time.  A videophone is a telephone with a video display, capable of simultaneous video and audio for communication between people in real-time. Videoconferencing implies the use of this technology for a group or organizational meeting rather than for individuals, in a videoconference.  Telepresence may refer either to a high-quality videotelephony system (where the goal is to create the illusion that remote participants are in the same room) or to meetup technology, which goes beyond video into robotics (such as moving around the room or physically manipulating objects). Videoconferencing has also been called "visual collaboration" and is a type of groupware.
At the dawn of its commercial deployment from the 1950s through the 1990s, videotelephony also included "image phones" which would exchange still images between units every few seconds over conventional POTS-type telephone lines, essentially the same as slow scan TV systems. The development of advanced video codecs, more powerful CPUs, and high-bandwidth Internet telecommunication services in the late 1990s allowed videophones to provide high quality low-cost colour service between users almost anyplace in the world that the Internet is available.
Although not as widely used in everyday communications as audio-only and text communication, useful applications include sign language transmission for deaf and speech-impaired people, distance education, telemedicine, and overcoming mobility issues. It is also used in commercial and corporate settings to facilitate meetings and conferences, typically between parties that already have established relationships. News media organizations have begun to use desktop technologies like Skype to provide higher-quality audio than the phone network, and video links at much lower cost than sending professional equipment or using a professional studio. More popular videotelephony technologies use the Internet rather than the traditional landline phone network, even accounting for modern digital packetized phone network protocols, and even though videotelephony software commonly runs on smartphones.