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ccolewilliam  
#1 Posted : Thursday, March 9, 2017 10:12:46 AM(UTC)
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I have a question how many computers in general can you have using NDI on your network? For some reason the other night my NDI screen captures were slowing down but it was also a night I was pulling in an RTPM stream into vmix. Which is not common for me. If that an internal network issue or is that something that could be improved with a faster overall internet connection. I am just not sure how to guaage how much my internal network can handle. Is it not unlimited.
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DWAM  
#2 Posted : Thursday, March 9, 2017 11:43:02 AM(UTC)
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Hi

the question is not how many computers but how many NDI streams in reference to your network speed.

First, what type of network do you use? 100Mbits? 1Gbits? 10Gbits?

If you use gigabit networks, you can easily transport up to 6 or 7 FullHD NDI streams.
1080p25 streams require roughly 100Mbits.

A NDI desktop capture usually requires less bandwidth (depending on the source screen resolution and the type of content, video vs powerpoint for example)

So unless your network is only 100Mbits capable you should not have bandwidth issue for only 1 NDI + 1 RTMP streams.
If so, upgrade to gigabit.

Guillaume
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kane  
#3 Posted : Thursday, March 9, 2017 10:42:17 PM(UTC)
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I would says that Gigabit is the minimum that you should be using for NDI. There might be some cases (like 720p or SD) where 100mbit can work, but if you really are planning on using an IP workflow, you need to be running at least 1 gigabit.

I'll just add that another piece to the puzzle is your network switch. These units can bandwidth limitations as well. If you are just using a basic (cheap) network switch, it might be fine for smaller productions with a few clients using a few channels of NDI going around, but if you are going to have lots of NDI sources, then you will want to look into a switch that has a full speed backplane. This is one in which all systems can talk to all other systems at full speed and the switch can keep up.

You might think that these kind of switches are really expensive, but they aren't. I've got a TP-Link 16-port Easy Smart Switch (TL-SG1016DE) and it was around $100 US and has 32Gbps of switching capacity.

Kane Peterson
NewTek
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thanks 2 users thanked kane for this useful post.
sinc747 on 3/9/2017(UTC), stigaard on 3/9/2017(UTC)
hak  
#4 Posted : Friday, March 10, 2017 3:46:11 AM(UTC)
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Hi.
For using NDI camera, What is the recommended wireless router speed should be?
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DWAM  
#5 Posted : Friday, March 10, 2017 3:54:54 AM(UTC)
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Use 5Ghz AP preferably. You need at least 802.11n or 802.11ac.
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hak on 3/10/2017(UTC)
kane  
#6 Posted : Friday, March 10, 2017 12:18:04 PM(UTC)
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Also look for a high performance wireless access point. One with MIMO is recommended.

Kane Peterson
NewTek
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hak on 3/10/2017(UTC)
kane  
#7 Posted : Saturday, March 11, 2017 2:07:47 AM(UTC)
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Here is another option for NDI Camera. Avoid wireless completely!

https://rebotnix.com/ndi/

Kane Peterson
NewTek
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DWAM on 3/11/2017(UTC), mjgraves on 3/11/2017(UTC)
livepad  
#8 Posted : Sunday, March 12, 2017 8:14:35 AM(UTC)
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Interesting thread on this topic over on the NewTek Forums
Wired Connection for iOS NDI Cams
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hak  
#9 Posted : Sunday, March 12, 2017 1:17:54 PM(UTC)
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What about android wired ndi cam
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livepad  
#10 Posted : Sunday, March 12, 2017 2:27:01 PM(UTC)
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hak wrote:
What about android wired ndi cam


I haven't tried it myself but I believe many android devices work pretty much out of the box using USB OTG adaptors with USB ethernet adaptors.
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mjgraves  
#11 Posted : Tuesday, March 14, 2017 12:35:24 PM(UTC)
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livepad wrote:
hak wrote:
What about android wired ndi cam


I haven't tried it myself but I believe many android devices work pretty much out of the box using USB OTG adaptors with USB ethernet adaptors.


While that might be true, I recently tried Google's combination power-supply and Ethernet adapter for Chromecast. While it works as promised with Chromecast, it definitely doesn't work as an Ethernet interface for any of my Android tablets or phones.

This a pity because it's otherwise a really elegant solution. Nice long cord. Ethernet jack built into the wall wart. Only 850 mA, so perhaps underpowered for long term use.

USB-OTG can be mechanically very fiddly. The best result I ever had was using a Nexus 7 tablet with the Asus dock that provides micro-USB and micro-HDMI. But the Nexus 7 had a lousy camera.
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livepad  
#12 Posted : Tuesday, March 14, 2017 1:33:23 PM(UTC)
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mjgraves wrote:
livepad wrote:
hak wrote:
What about android wired ndi cam


I haven't tried it myself but I believe many android devices work pretty much out of the box using USB OTG adaptors with USB ethernet adaptors.


While that might be true, I recently tried Google's combination power-supply and Ethernet adapter for Chromecast. While it works as promised with Chromecast, it definitely doesn't work as an Ethernet interface for any of my Android tablets or phones.

This a pity because it's otherwise a really elegant solution. Nice long cord. Ethernet jack built into the wall wart. Only 850 mA, so perhaps underpowered for long term use.

USB-OTG can be mechanically very fiddly. The best result I ever had was using a Nexus 7 tablet with the Asus dock that provides micro-USB and micro-HDMI. But the Nexus 7 had a lousy camera.


yes, real shame that Google device doesn't work generally.

I did try wired ethernet a long time ago with an LG Gpad 8.3" with a standard USB OTG adaptor and a really cheap USB2 -> 100BaseT adaptor. I didn't do any performance tests, but it worked out of the box. of course by now you have got 2 dongles hanging off, and I don't recall if there was any way to introduce a power supply...

Perhaps someone will copy the Google product idea with generic parts.
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