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Joined: 6/23/2020(UTC) Posts: 2  Location: Marana, Arizona
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So the computer guy who is looking at building a computer for us asked if we were using two or three cameras on a network with the computer do we really need the video capture card? I dont know! Maybe you do?
Thanks
Paul
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Joined: 7/28/2019(UTC) Posts: 351 Location: Santa Rosa Thanks: 1 times
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Are we talking about NDI? If you have NDI cameras, then you can capture through ethernet and send all of that to VMIx. You will need a good Cat5e cable and up, and more importantly, a dedicated Gigabit switch that than handle NDI. Here is a discussion on that here: https://live.ptzoptics.c...ork-switch-ndi%E2%93%87/
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Rank: Newbie
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Joined: 6/23/2020(UTC) Posts: 2 Location: Marana, Arizona
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I watched the video, Thanks. So that means I need the network switch like in the video but not the high dollar video capture card in the computer, correct? And yeah thanks for the reply post it is help for someone like me with little understanding of the technical ins and outs.
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Rank: Advanced Member
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Correct, as long as the camera is NDI or NDI HX.
You can capture computer outputs as well using VMIx capture.
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None of my computers have capture cards, I use NDI only and bring a router and switch everywhere I go. They're small, simple, and reliable and offloads all the video encoding from the computer. With a video switcher, you can run however many feeds the switcher can handle straight into the NDI converter.
Have had zero problems with it!
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NDI is not the only network approach to cameras. Even before NDI, some folks used RTMP streams as source. That allowed the use of low-cost surveillance cameras, including PTZ cameras.
RTMP/RTSP has more latency than NDI because it uses H264 compression. However, for some applications such a camera might be acceptable.
I accept that they are generally not comparable to anything that would have an SDI or HDMI output.
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a 4 input SDI card i about 500$, 600 with hdmi to SDI converter).
(look on amazon for the Yuantech cards, they are darn cheap)
that is not that expensive, a NDI converter cost at least the same price and you can get only one input.
Cameras with NDI output are still exception.
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