videoconf
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| - | =====Video Conferencing Basics===== | + | [[videoconf: |
| - | Video-enabled meetings happen in two distinct ways: either | + | |
| - | point-to-point or with multi-point. | + | |
| - | ====Point-topoint video conferncing==== | + | |
| - | In point-to-point, | + | |
| - | scenario is where one person or group is connected to another. | + | |
| - | The physical components (i.e. microphone and camera) that | + | |
| - | enable the meeting to take place are often integrated in to | + | |
| - | desktop computing solutions like a laptop or tablet, or can be | + | |
| - | combined into dedicated, room-based hardware solutions. | + | |
| - | + | ||
| - | Where desktop solutions tend to be used by individuals, | + | |
| - | room-based solutions utilize dedicated video conferencing | + | |
| - | technology where groups of people can be seen, heard and | + | |
| - | can naturally participate in the meeting. | + | |
| - | ====Multi-point video conferencing==== | + | |
| - | In multi-point video calls, three or more locations are | + | |
| - | connected together, where all participants can see and hear | + | |
| - | each other, as well as see any content being shared during | + | |
| - | the meeting. | + | |
| - | + | ||
| - | In this scenario, digital information streams of voice, video | + | |
| - | and content are processed by a central, independent software | + | |
| - | program. Combining the individual participant’s video and | + | |
| - | voice traffic, the program re-sends a collective data stream | + | |
| - | back to meeting participants in the form of real-time audio | + | |
| - | and video imagery. | + | |
| - | + | ||
| - | ====Protocols==== | + | |
| - | As video conferencing technology has evolved, two main | + | |
| - | protocols have emerged to provide the signalling control | + | |
| - | for the establishment, | + | |
| - | conferencing calls: SIP (Session Initiation Protocol) and H.323. | + | |
| - | + | ||
| - | For the encoding and decoding of visual information, | + | |
| - | industry is moving towards the industry standard known as | + | |
| - | H.264, which was developed to provide high-quality video at | + | |
| - | lower bandwidth over a wide range of networks and systems. | + | |
| - | An extension to the H.264 protocol is Scalable Video Coding | + | |
| - | (SVC), which is established to facilitate the enablement of video | + | |
| - | conferencing on a wider range of devices, such as tablets and | + | |
| - | mobile phones. | + | |
videoconf.txt · Last modified: 2018/02/06 10:42 by deul
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