Technical Description of TANDBERG MCU with software version D3
D12925 Rev. 03
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4.4.2 Video
Formats
The TANDBERG MCU supports the following video formats:
Native NTSC:
•
SIF,
Source Input Format
(352
x
240
pixels)
•
4SIF
(704
x
480
pixels)
Native PAL:
•
CIF,
Common Intermediate Format
(352 x 288 pixels)
•
4CIF
(704
x
576
pixels)
•
QCIF,
Quarter CIF
(176
x
144
pixels)
Native PC:
•
VGA,
Video Graphics Array
(640
x
480
pixels)
•
SVGA,
Super VGA
(800
x
600
pixels)
•
XGA,
eXtended VGA
(1024
x
768
pixels)
4.4.3 Asymmetric
Video
Formats
The TANDBERG MCU can send and receive asymmetric video formats. This means any
combination of the supported custom video formats may be sent/received to/from the MCU.
Changes in the video formats during the conference are done automatically either when one of
the sites changes its transmitting video format or if these formats are changed from the MCU
itself.
4.4.4 Best
Impression
Best Impression is a TANDBERG feature that allows the MCU to automatically select the
best
impression
for the user- without any user intervention. It will automatically select the optimal
layout for the optimal resolution.
Best Impression consists of three main parts:
•
Dynamic/Auto Layout switching in CP mode
This means the MCU will automatically switch to next layout (as described below) when
connecting more participants in the meeting.
•
Automatic resolution switching in CP mode
•
Video Transcoding
4.4.4.1 Dynamic/Auto Layout switching
The MCU may transmit a variety of picture modes:
•
Full screen picture
- when
Voice Switched
mode is selected
Current speaker is transmitted in full screen to all other participants. (The current
speaker will see the previous speaker).