User`s guide

4 Setting Up the VCB
22 Emblaze-VCON VCB5 User’s Guide
Dual Video
End points that support Emblaze-VCON’s HD DualStream™ (vPoint HD,
HD5000, HD4000, HD3000 and HD2000) or other dual-video capability can
send video and data streams simultaneously to a multipoint conference
through the VCB. During a conference, end points supporting HD DualStream
can view documents, graphics, and presentations as the main image, while the
video appears as a PIP inset on the screen.
Format The video codec (
H.261 , H.263, H.264 ) used by the
streaming source.
Video Format/
Size
The format and resolution of the transmitted video
images.
The available formats are:
T CIF (Common Interchange Format), or normal size
- 352x288
T QCIF (Quarter Size Common Interchange Format),
or quarter size - 176x144
T 4CIF (4 x CIF) - 704x576
T XGA (Extended Graphics Array) - 1024x768
T
VGA - (Video Graphics Array) 640x480
T
SVGA (Super Video Graphics Array) - 800x600
Method Define the permitted method for transmitting dual video
streams during a conference managed through this
service.
The H.239 standard enables end points to convert data
into a separate media stream and transmit it parallel to
the video stream. Video systems supporting H.239
display shared data and live video in separate windows.
Systems not supporting H.239 display only the shared
data in a single window.
T Choose None to block all dual video transmission.
T Choose H.239 to allow H.239 dual video
transmission.