Polycom, Inc. 3-1
3
Video Protocols and Resolution
Configuration for CP Conferencing
Video Resolutions in AVC-based CP Conferencing
The RealPresence Collaboration Server (RMX) 1500/2000/4000 always attempts to connect to
endpoints at the highest line rate defined for the conference. If the connection cannot be
established using the conference line rate, the Collaboration Server attempts to connect at
the next highest line rate at its highest supported resolution.
Depending on the line rate, the Collaboration Server sends video at the best possible
resolution supported by the endpoint regardless of the resolution received from the
endpoint.
The video resolution is also defined by the Video Quality settings in the Profile.
• Motion, when selected, results in lower video resolution at higher frame rates (30 fps to
60 fps).
• Sharpness, when selected, sends higher video resolution at lower frame rate (30 fps and
lower).
The combination of frame rate and resolution affects the number of video resources
required on the MCU to support the call.
The following resolutions are supported:
• CIF 352 x 288 pixels at 25/30 or 50/60 fps.
• SD 720 x 576 pixels at 25/30 or 50/60 fps.
• HD 720p 1280 x 720 pixels at 25/30 or 50/60 fps.
• HD 1080p 1920 x 1080 pixels at 25/30 fps
• HD 1080p 1920 x 1080 pixels at 50/60 fps
The following video resolution information applies to AVC Conferencing Mode.For a description of
resolutions for SVC Conferencing Mode see "The MCU automatically selects the resolution and
frame rate according to the conference line rate. Table 2-6 details the maximum resolution and
frame rates supported by the MCU for each conference line rate. The actual video rate, resolution
and frame rates displayed on each endpoints is determined by the endpoint’s capabilities.:” on
page 2-16.
From Version 8.1, MPM+ media cards are not supported.