VCON HD3000 User’s Guide
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8
S
TREAMING
M
EDIA
Streaming refers to the continuous transmission of media (video, audio and/or data)
in one direction. Unlike videoconferencing, which requires realtime, two-way
transmission with sufficient bandwidth, successful streaming has less stringent
transmission requirements. Streaming may take place whether or not the HD3000 is
engaged in a call.
Multicast and unicast streaming are available for HD3000 users:
T
A
multicast
stream refers to the same stream simultaneously sent from one
terminal to more than one client.
T
A
unicast
stream refers to one stream being sent from one terminal to only one
client.
The transmitted media is not stored on the client computer. Instead, the client’s
viewing application runs the stream as it collects and processes it, even if the client
is still receiving the stream.
Using VCON’s HD DualStream™, the HD3000 can send a video and data stream
simultaneously. HD DualStream enables video transmission using the H.263 codec
in CIF, and data transmission (as video images) using H.263 at 4CIF resolution. If
the viewing client’s conferencing system or PC supports 4CIF, the data images
appear in 4CIF. Otherwise, the data displays in CIF.
To view streams, VCON’s Broadcast Viewer or Apple’s QuickTime Player
must be installed on the client computer.