Video conferencing allows for live visual communication between two or more locations, ranging from transmission of static images to full motion video and audio. It has its origins in the 1920s but became more widely adopted in the 2000s with improved broadband access. It works by compressing analog audiovisual input into digital packets for faster transfer over networks, and has benefits for improved productivity and collaboration, though requires a strong internet connection. Popular platforms include Zoom, FaceTime, and Skype.

1. A Live Visual Connection
VIDEO CONFERENCING
J P Wickramasinghe

2. A video conference is a live, visual
connection between two or more people
residing in separate locations for the purpose
of communication. At its simplest, video
conferencing provides transmission of static
images and text between two locations. At
its most sophisticated, it provides
transmission of full-motion video images
and high-quality audio between multiple
locations.
What is video conferencing?

3. In 2004, many businesses started
adopting video conferencing systems
for the first time since broadband
technology was finally more
affordable and widespread.
History of Video Conferencing
The first developments in video
conferencing can be traced back to
the 1920s when AT&T Bell Labs
and John Logie Baird started
experimenting with video phones

4. 01 A webcam capable of producing high-quality video
Requirements for video conferencing
02 A computer with at least 1 GB of RAM and a dual-
core processor
03
A fast network connection
04 A computer screen, monitor, TV or projector that
can broadcast video output
02
03
04
05
Headphones, laptop speakers or professional
speakers that can be used for audio output

5. Video conferencing is important because it
joins people who would not normally be able
to form a face-to-face connection. In
businesses, it can increase productivity
amongst employees as well as provide an
improved way of communicating and
interacting with colleagues, partners and
customers.
Importance and benefits of video
conferencing

6. While video conferencing provides
numerous benefits for businesses and
individuals, it also possess several
disadvantages. For example, video calling
and conferencing requires a strict, high-
speed Internet connection. Only a strong
Internet connection can guarantee that the
voice audio and visual images will be
reliably and smoothly communicated.
Disadvantages of video conferencing

7. How video conferencing works
The video conferencing process can be split into two
steps: compression and transfer.
During compression, the webcam and microphone capture analog AV
input. The data collected is in the form of continuous waves
of frequencies and amplitudes which represent the captured sounds, colors,
brightness, depth and shades. In order for this data to be transferred over a
normal network -- instead of requiring a network with
massive bandwidth -- codecs must be used to compress the data into
digital packets, allowing the captured AV input to travel faster over
broadband or Wi-Fi Internet.

8. Zoom
Join now - https://zoom.us/
Video conferencingvendors
Face time
FaceTime is a proprietary videotelephony product developed by Apple
Inc. FaceTime is available on supported iOS mobile devices and
Macintosh computers that run Mac OS X 10.6.6 and later.
Skype
Skype is a telecommunications application that specializes in
providing video chat and voice calls between computers, tablets,
mobile devices, the Xbox One console, and smartwatches over the
Internet