Avaya Video Communications Systems Administrator Guide
28
Controlling Video Stretch
You can ensure that users always see 4:3 aspect ratio presentation input or received
presentation video in 16:9 aspect ratio by selecting
Enabled
for the
Stretch
Video
preference in
Administrator Preferences : Video : Video Control
. The default is
Disabled
.
Note:
Setting this preference to
Enabled
has no effect if the resolution of either display
connected to the system is set to 1920x1080 on Avaya systems that support this
resolution.
The
System Information
screen shows the actual input size for the
VGA Input
status (or
DVI-I
Input
status on models that include a DVI-I input on the codec). The input selector
shows a 16:9 or 4:3 window for the input depending on the aspect ratio.
Choosing a VISCA Input with Supported Third Party Cameras
Avaya 1050 includes the
VISCA Input
preference in
Administrator Preferences : Video :
Video Control
for selecting the input on the codec to which a supported VISCA controlled
camera is connected. The default is
SDI Adapter
. If you are using the RS-232 serial port on
Avaya 1050 to control the system through the command line interface with a third party
device,
None
appears as the setting for this preference.
Balancing Primary and Presentation Video Bandwidth
For video images sent to the far side during a presentation, you can allocate bandwidth to
the primary and presentation video input streams as percentages of the total available bit
rate for the video streams. Select the percentage to allocate in
Administrator Preferences
: Video : Video Quality : Video Bandwidth Balance
.
Note:
Adjust this preference before placing a call. Adjusting this preference during a call
has no effect.
The first percentage in each option applies to the primary video input stream, typically the
high definition camera. The second percentage applies to the presentation video input
stream, typically a laptop or personal computer connected to the codec. The system
allocates the bandwidth based on the selected option when only the system sends video
images during a presentation. Consider adjusting this preference when the video stream
from the presentation video input includes motion, for example a slide show that includes
several animations or video input from a DVD player.
