H.264 High Profile Support In Video Switching Conferences - Polycom realpresence 1800 Administrator's Manual

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H.264 High Profile Support in Video Switching Conferences

Beginning with Version 7.6, the H.264 High Profile video protocol is supported in Video Switching (VSW)
conferences.
Guidelines
● H.264 High Profile is supported in VSW conferences in H.323 and SIP networking environments only
● For H.264 High Profile-enabled VSW conferences, all endpoints connecting to the conference must
support High Profile and connect to the VSW conference at the exact line rate and exact resolution
defined for the conference. Endpoints that do not meet these requirements are connected as
Secondary (audio only).
● For H.264 Base Profile VSW conferences, both High Profile and Base Profile supporting endpoints
connect using the H.264 Base Profile.
 Endpoints that do not support the exact conference line rate are disconnected.
 Endpoints that do not support the exact video settings such as protocol and resolution defined for
the conference will be connected as Secondary (audio only).
Minimum Threshold Line Rate System Flags
The following table lists the System Flags that control the minimum line rate threshold for the various
resolutions available for High Profile-enabled VSW conferences.
These system flags must be manually added to the Setup menu > System Configuration before you can
update their values. For more information see the
System Flags - Minimum Threshold Line Rates
Flag Name
VSW_CIF_HP_THRESHOLD_BITRATE
VSW_SD_HP_THRESHOLD_BITRATE
VSW_HD_720p30_HP_THRESHOLD_BITRATE
VSW_HD_720p50_60_HP_THRESHOLD_BITRATE
VSW_HD_1080p_HP_THRESHOLD_BITRATE
VSW_HD_1080p60_HP_THRESHOLD_BITRATE
VSW_HD_1080p60_BL_THRESHOLD_BITRATE
Line rate and resolution combinations are checked for validity. If the selected line rate is below the minimum
line rate threshold required for the selected resolution, the line rate is automatically adjusted to the minimum
line rate threshold value for the selected resolution.
Polycom®, Inc.
Defining AVC-Based Conference Profiles
Modifying System Flags.
Minimum Threshold Line Rate (Kbps)
64
128
512
832
1024
1024
1728
91