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Video Conferencing Ppt


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Video Conferencing Ppt

  1. 1. WHAT IS VIDEO CONFERENCING??? Video conferencing is simply a vehicle for interactive communication. enables one set of people to see and hear people in a different location. in its most basic form is the transmission of image (video) and speech (audio) back and forth between two or more physically separate locations. Also known as “Videoteleconference”.
  2. 2. BASIC FEATURES Very straightforward approach. Calls can be made locally, nationally or across the world.
  3. 3. GUESS IT!!!!!!!
  4. 4. VIDEO CONFERENCING COMPONENTS Camera Microphone Speakers TV or Monitor
  5. 5. CAMERA To capture & send video during video conferencing.MICROPHONE To capture & send audio during video conferencing.
  6. 6. SPEAKERS To play the audio received during video conferencing.MONITOR To display the video received during video conferencing.
  7. 7. ADDITIONAL REQUIREMENT CODEC Codec - “COder-DECoder”( COmpressor- DECompressor )- makes the audio/video data "small enough" to be practical for sending over expensive network connections. A codec takes analog signals, compresses and digitizes them, and transmits the signals over digital phone lines.
  8. 8.  CODEC Compression rates of up to 1:500 can be achieved. Theresulting digital stream of 1s and 0s is subdivided into labeled packets, which are then transmitted through a digital network.
  9. 9. VIDEOCONFERENCING SYSTEMS Dedicated systems have all required components packaged into a single piece of equipment. usually a console with a high quality remote controlled video camera. Desktop systems are add-ons to normal PCs, transforming them into videoconferencing devices.
  10. 10.  Dedicated systems Large group videoconferencing: non- portable, large, more expensive devices used for large rooms and auditoriums. Small group videoconferencing: non- portable or portable, smaller, less expensive devices used for small meeting rooms. Individual videoconferencing: usually portable devices, meant for single users, have fixed cameras, microphones and loudspeakers integrated into the console.
  11. 11. VIDEOCONFERENCING TYPES Point-to-point A videoconference that connects two locations. Each site sees and hears the other sites at all times
  12. 12. VIDEOCONFERENCING TYPES Multi-pointA videoconference that connects to more than two sites through the use of a multi-point control unit( MCU ) or video hub. Participantsat all sites can hear one another at all times and see the site that is currently speaking. ( Voice activated switching) This is a bridge that interconnects calls from several sources.
  13. 13. QUIZ TIMEA polycom is:  A) one of those geometric atrocities whose angles add up to heck of a lot more than the sum of its sides.  B) A tame parrot (Polycalm, get it?).  C) A triangular representation of the USS Starship.  D) None of the above.
  14. 14.  Polycom is the market leader in endpoint voice and video communications.
  15. 15. USES Business E-Meetings
  16. 16. USES E-Learning Presentations
  17. 17. USES Chatting with friend
  18. 18. USES Family talk
  19. 19. USES Telemedicine Transmission of medical images Diagnosing & consulting
  20. 20. USES Videoconferencing in my hand
  21. 21. ADVANTAGES Student learning is impacted in several ways:  Enhances student motivation.  Is exciting or different, catches the student’s attention.  Connects with the real world.  Promotes student retention and learning.  Accesses information from primary sources.  Accommodates many learning styles.
  22. 22. ADVANTAGES Students have the opportunity to interact with the experts in a particular field of study. Videoconferencing accommodates a variety of different learning styles through several modalities.  Videos  Animations  Audio  Graphics  Collaboration
  23. 23. ADVANTAGES Videoconferencing affords students the opportunity to develop and improve various communication skills.  Presentation and speaking skills.  Communication and management skills.  Questioning and interviewing skills.
  24. 24. ADVANTAGES Use of sign language communications for deaf, hard-of-hearing and mute Can improve work quality Reduce costs Improves communication Groups can meet more frequently Critical meetings can be conducted in less time More faculty and staff can be involved
  25. 25. LIMITATIONS Initial cost of the equipment is high. Ghost/Blurred images seen when rapid movement occurs :  Wear neutral, solid colors.  Avoid checks and stripes.  Avoid white and shades of red.  Red is not codec-friendly.  Use plain background.  Avoid glass in the background. Audio echo effect seen when system is not properly installed :  Switch OFF microphone when not in use.