Tim;

Can you elaborate or direct me to info on how you integrate the Samsung tablet into the chat system you use and how you get that graphic onscreen?

What I want to know is what the requirements are for the viewer feedback (must it come from a platform like Facebook or can a chat system of my own be used - I know you mention IRC, for example, and I use PHPChat), and how you get each individual chat on screen as a source.

I assume from the graphic the Ipad is only a web controller?

Hope I'm clear....Thanks

but how is Tim getting the questions up onto the half-screen? Whats the flow process there? Looks like the Galaxy is running that part...

ndi maximum capacity limits, what's too much? we're using ndi all over the place, 10+ sources and not had a problem (2x Asus rog 752vs) but I've got no gage as to how close to the limit I am or wether there even is one

Typically, account for 100mbit/s of data for a 1080i video stream. Higher frame sizes and/or frame rates will be higher bandwidth, however it isn't linear bandwidth scale. For example, 1080p60 video won't double the datarate of 1080i, probably more like 50% higher. NDI is variable bit rate, so while 1080i 100mbit/s can happen, ~80mbit is probably typical for most video.

As for the maximum, that depends on a few factors.

There is network bandwidth. Usually 8 to 10 streams of 1080i video on a 1Gb Ethernet connection is safe. NDI does support multiple Ethernet links, so you can use two Ethernet ports connected to the switch to give you double the bandwidth.

Another factor is CPU performance, NDI does have to be decoded. In the case of NDI|HX, GPU hardware acceleration can be leveraged if supported by the application. NDI does take advantage of AVX and AVX2 instruction sets on CPU which will benefit performance. Also, 64-bit systems will perform better with NDI.

Kane Peterson
NewTek