Sharing Content During Conferences
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●In AVC conferences - The H.264 Cascade and SVC Optimized option must be used for AVC
cascaded conferences sharing H.264 content. The selected content is defined by the conference
parameters:
Line rate
Content settings (Graphics, Hi-res Graphics, or Live Video)
Resolution configuration
●In SVC enabled conferences - The H.264 Cascade and SVC Optimized option must be used for
SVC enabled conferences sharing content over H.264.The used content rate is 128Kbps (fixed) and
720p5 resolution. Endpoints not supporting the required content parameters (content line rate and
resolution) cannot share or view content.
For more information see H.264 Cascade and SVC Optimized (Fixed) Content Rates Table.
H.264 HD (AVC CP default)

H.264 Content Sharing Properties

The H.264 HD option should be selected if most endpoints in the conference support H.264 to ensure high
quality content.
When this protocol option is selected, content minimal bit rate is determined. For more information, see
Setting the Minimum Content Rate for Each Content Quality Setting for H.264 HD.
Content parameters are determined by the Collaboration Server applying the Highest Common principle
(see Highest Common), for H.264 media content protocol only.

Guidelines for Sharing Content Using H.264 HD

●Only endpoints supporting HD H.264 content (at least HD720p5) can share content.
●This option is not available in SVC-enabled conferencing modes.

Setting the Minimum Content Rate for Each Content Quality Setting for H.264 HD

System flags determine the minimum line rate required for endpoints to share H.264 high quality content for
each of the Content Settings: Graphics, Hi Resolution Graphics and Live Video.
To change the system flag value, the flag must be first manually added to the System Configuration (see
Modifying System Flags.
H.264 HD may be used for content sharing only for a single MCU, but not in cascading conferences.
H.264 HD System Flags
Content Settings Flag Name Range Default
Graphics H264_HD_GRAPHICS_MIN_CONTENT_RATE 0-1536 128
Hi Resolution Graphics H264_HD_HIGHRES_MIN_CONTENT_RATE 0-1536 256
Live Video H264_HD_LIVEVIDEO_MIN_CONTENT_RATE 0-1536 384