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Chapter 10 - Conference Templates – Full Parameters View
10-24
Video Protocol The Video Protocol, Video Format and QCIF Frame
Rate are parameters that determine the highest
common video used by all the conference
participants. The Video Protocol determines the
video compression standard used by the endpoints.
Select one of the following options:
Auto - the system automatically selects the
appropriate compression method and enables the
dynamic adjustment of the highest common video
algorithm. In such a case, when a participant leaves
the conference, the MCU adjusts the common video
to the highest level for the remaining connected
participants. This setting overrides the Video
Protocol settings in the Participants Properties -
Advanced dialog box as the dynamic mode settings
are forced by the MCU.
H261 - The compression standard mandatory to all
endpoints.
H263 - The compression standard that provides
improved video quality at a line rate lower than 384
Kbps. This standard is not supported by all
endpoints. If H.263 is selected in Video Switching
conferences, all participants must be connected
using this protocol. Participants whose endpoint
does not support H.263 are connected as
Secondary.
Note:
When selecting the H.261 or H.263, the system
regards it as a fixed format and disables the dynamic
adjustment of the highest common video.
The dynamic adjustment of the video protocol
supports only 30 frames per second in CIF format.
All other H.263 capabilities are disabled.
H264* - The compression standard H.264* that
incorporates DCT (H.263) compression principles,
but is provided at half the bit rate.
H.264* provides CIF/4CIF video using low bit rates
and implements a fixed video rate when the video
stream of the endpoint becomes active ("people").
The Endpoint that supports H.264* is iPower.
Table 10-3: Basic Conference Parameters
Option Description