Video Protocols and Resolution Configuration for CP Conferencing
Polycom®, Inc. 88
H.264 High Profile Support in CP Conferences
The H.264 High Profile is a new addition to the H.264 video protocol suite. It uses the most efficient video
data compression algorithms to even further reduce bandwidth requirements for video data streams.
Video quality is maintained at bit rates that are up to 50% lower than previously required. For example, a
512Kbps call will have the video quality of a 1Mbps HD call while a 1Mbps HD call has higher video quality
at the same (1Mbps) bit rate.
Guidelines
H.264 High Profile is supported in H.323 and SIP networking environments.
H.264 High Profile is supported in Continuous Presence conferences at all bit rates, video resolutions
and layouts.
H.264 High Profile is the first protocol declared by the Collaboration Server, to ensure that endpoints
that support the protocol will connect using it.
Setting minimum bit rate thresholds that are lower than the default may affect the video quality of
endpoints that do not support the H.264 High Profile.
For monitoring purposes, the Collaboration Server and endpoint H.264 High Profile capability is listed
in the Participant Properties - H.245 and SDP tabs for H.323 participants and SIP participants
respectively.
For more information see "IP Participant Properties” on page12-20.
H.264 High Profile is not supported:
For Content Sharing
As an RSS Recording link
With Video Preview
CP Conferencing with H.263 4CIF
The video resolution of 4CIF in H.263 endpoints is only supported for line rates of 384 Kbps to 1920 Kbps
as shown in the table below.
Video Quality vs. Line Rate
The Collaboration Server Web Client supports monitoring of H.263 4CIF information. The H.245 or SDP tab
includes the additional information.
The creation of a new H.263 4CIF slide is supported in the IVR Service in addition to the current H.263 IVR
slide. If users utilize the default Polycom slides that are delivered with the Collaboration Server, the slide’s
resolution will be as defined in the profile, i.e. SD, HD, CIF, etc.
For more information see “High Resolution Slides” on page571.

H.263 4CIF Guidelines

H.263 4CIF is supported with H.323 and SIP connection endpoints.
H.264 High-Profile should be used when all or most endpoints support it.