Extron electronics VNM EC 200, User Manual, Page: 45 / 242

An example of how video multicast addresses are created is shown in the table below.
Video Multicast Address Example for IP Address 192.168.0.102
Item Value Binary Comments
Default Value for the First Two Octets
First octet
239
All multicast addresses
in this scheme use
these values.
Second octet
192
Deriving the Third Octet This is a binary value
derived as follows.
Bits 8, 7, 6 ( bbb )
0 000 xxx yy
The most significant
three bits are always 0.
Channel number (
xxx
)
0 bbb 000 yy
The channel number
for an encoder is 0.
Video stream element ( yy )
1
bbb xxx 01
The value for the video
stream element is 01.
Resulting third octet
1
000 000 01
Deriving the Fourth Octet
Fourth octet (
z
)
102
Takes the value of the
last octet in the device
IP address.
Final Multicast Address
Video stream multicast
address
239.192.1.102
VNM EC 200 • Advanced Controller Configuration 35