Hey guys, i’m very happy with NDI implementation, its great for performances that need wireless movable cams, but have some observations and problems with framerates, and would love to learn others experiences / solutions, in particular regarding which networks / routers to use.
I’ve been developing and performing a set that uses three wireless NDI cams (current gen ipod touch). In studio and rehearsal, i can have all three running in SD on its own wirless network, provided by a Google Wifi, or also just using my normal home network, a router provided by Deutsche Telekom. Also using an old Apple Aiport Express works fine. I get stable 24-30 fps framerates with acceptable low latencies, they are mostly equal to wired video inputs, and uses appearantly less CPU on my system, wieghts NOTHING, so a win win for touring.
When touring I’ve been using the Google Wifi. Up until this weekend, all performances have been smooth sailing. However, this weekend, framerates fell to between 0 and 6 per sec and I could use at most one camera, maybe two (one camera seemed to linger around 12 fps, the other between 0 and 6). They never disconnected but often was just a frozen frame. Nothing I did changed anything, the network (I assume) was “clogged”?. System CPU and VDMX was working fine and responsive. This was in a huge public building, but there weren’t a lot of other wireless networks, as far as i could see. No other wireless equipment in use on stage.
The Google WiFi has no “settings” to inspect or change, it is designed to “optimize” the network itself automatically. And I don’t know enough about network tools or setups to be able to figure out what went wrong.
Does anyone have more experience working with NDI, and have tips for “best practices”, either to set things up so this never happens again, or if it happens, a way to find out what the problem is and correct it? Is there anything in MacOs I can do or look into to help figure out why the network is so slow?
Of course now back in the studio, it works fine, i can’t reproduce the problem. But I’ll be touring extensively with this setup so I fear the problem will appear again, and need to find a workaround/solution, or eventually disregard NDI and look for other video inputs (which I’m soooo tired of…).
Thanks for any advice or input or thoughts!