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Free Video ‘Phone Calls’ Presented to SIR Area 2 CAT by Barry Brown & Derek Southern 16 January 2014.

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Presentation on theme: "Free Video ‘Phone Calls’ Presented to SIR Area 2 CAT by Barry Brown & Derek Southern 16 January 2014."— Presentation transcript:

1 Free Video ‘Phone Calls’ Presented to SIR Area 2 CAT by Barry Brown & Derek Southern 16 January 2014

2 How many people? 1:1 you have several free choices –FaceTime –Skype 1:1, 1:2 or more; free choices –TeamView/TeamMeeting (up to 25) –Google+ Hangouts (up to 10)

3 At Home, or Mobile Windows Mac iPhone Android Other

4 Software Browser based - cloud Installed on your computer

5 Usability Must be easy to set up Must be easy to use If more than 1:1 you need management controls eg scheduling Multi-OS is an advantage Support – documentation Video plus call-in audio

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12 Webcam factors #1: Image sensor CCD –For high quality video –Lower video noise –More expensive than CMOS

13 Webcam factors -2 Definition –320x240 pixels OK for Skype –640x480 pixels OK for small video clip for uploading to YouTube –1920x1080 pixels is the highest definition –1080p or 720p?

14 Webcam factors -3 Sensitivity of image sensor – low sensitivity degrades video quality dramatically Microphone – noise cancelling is useful Autofocus – tracks and focuses on the face (look for OFF switch) 360° rotation or fixed For video: how many FPS? High quality usually needs >30fps

15 Webcam lens Glass or plastic –Plastic lens sufficient for video chatting –Glass lens for high quality output, up to broadcast quality –Glass lenses are more expensive

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23 TeamMeeting

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27 My Video

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