Polycom 40/0 manual Live Streaming Resources Usage

System Overview

Live Streaming Resources Usage

The combination of frame rate, resolution and number of live streaming rates used affects the quantity of resources required on the RealPresence Capture Server to support live streaming.

On Capture Server, streaming port calculation is used as quantitative indicator of live streaming resources, one stream (single bitrate) of 720p live streaming costs system resource calculated as one streaming port, for example, one stream of 1080p live streaming needs two streaming ports.

If multiple bitrates are configured for one live stream, each bitrate is calculated separately.

If WMV is configured as the output format and the layout is set as dual window, then one additional port is calculated as well for each bitrate.

In addition to live streaming, the following features also use streaming ports:

●Video call playback

For details, refer to Video Call Playback.

●Point-to-point recording

Streaming ports are reserved before calls are connected by call rate in recording template.

If there are not enough streaming ports available in system for one service request, the request will be rejected. If real call rate is lower than the call rate configured in recording template, the Capture Server system will update the streaming ports that are really occupied. If system finds that multiple live streams are at the same rate, it will turn off duplicated live rates to save live streaming resources and occupied streaming ports will be updated together. If external live media server is configured in the VRR template, system will not turn off duplicate live rates.

Resource Consumption

Feature	Resources Consumed
Recording/Live Streaming resource	Resolution	Recording Port	Live Streaming Port
consumed
	4CIF/SD	1	0.5
	720p	1	1
Conference Call (or Endpoint Call)
	1080p	1	2
Video Call Playback	4CIF/SD	1	0.5
	720p	1	1
	1080p	1	2
P2P	4CIF/SD	1	0.5
	720p	1	1
	1080p	1	2

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