Svc-Based Conferencing (Media Relay); Mixed Cp And Svc Conferencing; Rich Video Layout Display Options - Polycom RealPresence 800s Getting Started Manual

RealPresence Collaboration Server 800s/Virtual Edition Getting Started Guide
For more information see the Polycom® RealPresence Collaboration Server 800s/Virtual Edition
Administrator's Guide, Video Protocols and Resolution Configuration for CP Conferencing.

SVC-based Conferencing (Media Relay)

Media Relay SVC Conferencing is based on the Scalable Video Coding (SVC) video protocol and Polycom's
proprietary Scalable Audio Coding (SAC) protocol. It offers high resolution video conferencing with low
end-to-end latency, improved Error Resiliency and higher system capacities.
The Polycom multipoint media server, serves as an integrated media relay engine that provides media
streams for displaying conferences at low latency video experience in video conferences. For more details,
see Polycom® RealPresence Collaboration Server 800s/Virtual Edition Administrator's Guide, SVC-based
Conferencing.
SVC-based Video Resolutions
In the Scalable Video Codec (SVC)-based conference, each SVC-enabled endpoint transmits multiple bit
streams, to the Polycom® RealPresence® Collaboration Server. Simulcasting enables each endpoint to
transmit at different resolutions and frame rates such as 720p at 30fps, 15fps, and 7.5fps, 360p at 15fps and
7.5fps, and 180p at 7.5fps.
Using the SVC video protocol, SVC conferences relays the received video streams to the SVC-enabled
endpoints at different resolutions, frame rate s and line rates according to the endpoint's display capabilities
and layout configurations without sending the entire video layout to the endpoints.
For more details, see Polycom® RealPresence Collaboration Server 800s/Virtual Edition Administrator's
Guide, SVC-based Conferencing.

Mixed CP and SVC Conferencing

This type of conference enables participants with SVC-enabled endpoints and AVC endpoints to participate
in the same conference.
Each endpoint connects according to its capabilities. The MCU processes the AVC video streams and
converts them into SVC video streams and relays them to the SVC participants that constructs the video
layout on the endpoint.
In the same way, the MCU processes the video streams received from the SVC participants, converts them
into AVC video and then transcodes all the video streams to compose the video layout that is sent to the
AVC endpoints.

Rich Video Layout Display Options

Video Layout describes the arrangement of cells on the screen of an endpoint, with each cell showing the
video of one of the conference participants. Usually, the participant cannot see himself/herself in the layout.
A selection of layouts are available to accommodate different numbers of participants and conference
settings.
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