Lower latency tha sdi?, sure?.
I think you have something wrong. Have you choose “low latency capture” in preferences?.
No sense to me because ndi on vmix has about 2 frames latency and sdi is only 1.

Regards

Jose.

I think that a 10Gb link from PC to switch could be a good move. I've tested single NDI hardware encoders against PCIe/USB capture devices and seen similar latency (between a PCIe card and a hardware NDI encoder), but in a recent test with a PCIe card for reference plus three NDI encoders (BirdDog, Magewell & NewTek), and using a "complex" video source at 1080p60, I found that whilst the NDI encoders were typically all on the same frame, the PCIe card was always a frame ahead - sometimes more. Thinking about it, it's perhaps not surprising that the more ethernet bandwidth is required (between the PC and network switch) by using multiple NDI sources, the more the overall NDI latency will increase.

vMixScreen3wayR-5c.png (971kb) downloaded 2 time(s).

Is there a make and model 10gb nic anyone can recommend?

Appreciated.

Norman

In my first test I did not do an accurate measurement of the latency.
My system was with a Decklink quad 2 and a bird dog studio with low latency input checked and ndi udp enabled; visually the ndi signal was a little bit faster than sdi.
But following your inputs I tried other NDI receivers (OBS, Newtek's Studio Monitor and Vidblaster) and I must say that vMix is the slower one.
I tried a very simple test switching different test patterns in Newtek's Test Patterns software (I don't have the Bird Dog studio anymore) and I noticed variable latency in vMix with some occasional stutters….
I would like to set up an all NDI system, but vMix does not seem to be the best solution….

Stefano

And this is weird….
vMix has always been a pioneer in NDI world.
And honestly I think is the best software video switcher solution around.
I really want to jump to NDI wagon because I think the echosystem could lead to amazing opportunities in terms of flexibility and capabilities (think about something like Sienna Processing Engine or cloud mixing).
I would like to make vMix the core of my system, but working a lot in IMAG projects low latency is an essential feature for me.

Any word from Martin or Tim?

Stefano

Jose, may I please ask, what is the make/model on your 10GB Router, and are you happy with it?

Kind regards

Norman.

Greetings all. Interesting thread discussing the latency issues with an all NDI system. I am looking to put together an all NDI 6 source system. We are NOT doing any I-Mag at all but only recording / streaming. Other than having a fast network, are there any issues with delays between the NDI streams? Can anyone give a "real world" idea of bandwidth. I know that NDI has a spec of 140Mb/sec for the UDP but how many can you actually hang off of a 1G ethernet connection?

Thanks in advance and feel free to point out any threads that may help. New user here.

kw