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Chapter 4-Video Protocols and Resolution Configuration for CP Conferencing
Polycom, Inc. 4-9
Base Profile / High Profile Resolution Slider Panes
These Video Quality settings are selected per conference and are defined in the conference
Profile and they determine the resolution matrix that will be applied globally to all
conferences. The resolution matrix is determined by the resolution configuration and can be
viewed in the Resolution Configuration sliders.
System Resource usage is affected by the Resolution Configuration settings.
Example
As shown in following diagram:
•Moving the HD720p30 resolution slider from 1024kbps to 1920kbps increases the
minimum connection threshold line rate for that resolution. Endpoints connecting at
line rates between 1024kbps and 1920kbps that would have connected at HD 720p30
resolution will instead connect at SD 30 resolution. Each of the affected endpoints will
connect at lower resolution but will use 1 system resource instead of 2 system resources.
Flag Settings
Setting the Maximum CP Resolution for Conferencing
The MAX_CP_RESOLUTION flag value is applied to the system during First-time Power-up
and after a system upgrade. The default value is HD720p30.
All subsequent changes to the Maximum CP Resolution of the system are made by selections
in the Max Resolution pane of the Resolution Configuration dialog box.
The Collaboration Server can be set to one of the following resolutions:
•HD720p30
•SD 30
•CIF 30
Minimum Frame Rate Threshold for SD Resolution
The MINIMUM_FRAME_RATE_THRESHOLD_FOR_SD System Flag can be added and
set to prevent low quality, low frame rate video from being sent to endpoints by ensuring
that an SD channel is not opened at frame rates below the specified value. For more
information see "Modifying System Flags” on page 21-1.