Multicast allows for one-to-many or many-to-many transmission of data to a group of destination computers simultaneously. Using PTZOptics NDI-enabled multicast cameras requires a multicast-enabled network with switches and cabling that support multicast, as well as network-attached devices that are multicast-enabled and have mDNS enabled. IGMP snooping allows network switches to listen to IGMP traffic and maintain maps of which links require which multicast streams to filter traffic to only ports that need it. This allows practical applications like broadcasting customized live streams from the same cameras to different computers for multiple languages or audiences.

1. Multicast for Live Streaming
Using PTZOptics NDI Ready Multicast enabled cameras.

2. Wikipedia Definition
In computer networking, multicast is group communication[1]
where data transmission is addressed to a group of
destination computers simultaneously. Multicast can be one-
to-many or many-to-many distribution.[2] Multicast should not
be confused with physical layer point-to-multipoint
communication.

3. Unicast vs Multicast
Think on-demand video vs
live broadcast channels on
your television. (if you
haven’t cut the cord already
:)

4. Requirements for Multicast & NDI Cameras
1. Multicast Enabled Network
2. Network Switch w/ Multicast Capabilities
3. Network with mDNS Enabled
4. CAT5e or better ethernet cabling

5. Enabling Multicast and IGMP Snooping
Unifi
Network
Setup.

6. What is IGMP Snooping?
IGMP snooping is the process of listening to Internet Group
Management Protocol (IGMP) network traffic. The feature
allows a network switch to listen in on the IGMP conversation
between hosts and routers. By listening to these
conversations the switch maintains a map of which links need
which IP multicast streams. Multicasts may be filtered from
the links which do not need them and thus controls which
ports receive specific multicast traffic.

7. Practical Example
PTZOptics Camera Gigabit Ethernet Switch
Fixed
Bandwidth
Multicast
Enabled Network

8. Live Demonstration in Our Studio
Our Broadcast PC
Running vMix
Our 12X NDI Camera
Paul’s PC Running
NDI Studio Monitor
Tess’s Computer
Running vMix to power
confidence monitor

9. Customized Broadcast Stations
Computer #1
customized stream
for Facebook
Choose from multiple
cameras on your
network
Computer #2
customized Stream
for YouTube
Computer #3
customized Stream for
Private CDN

10. Customized Broadcast Stations
Practical Applications
1. Broadcasting the Same show for multiple
languages
2. Broadcasting slightly different shows
catered to various audiences (include a
PnP for sign language)
3. Multiple Camera Producers with different
look and feel

11. Remote Camera Operators
Main Broadcast PC
A PTZOptics NDI
Camera Remote Computer for
Preview Monitor

12. NDI HX Driver information

13. NDI HX Driver
Available for both Windows & Mac.
Here is what is included with the
NDI HX Driver.
1. Virtual Camera
2. Studio Monitor
3. Access Manager
https://new.tk/ndihx

14. NDI HX Driver
Activating your NDI Camera license
through the NDI Studio Monitor.