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NDI dropped frames from 2nd PC
Rank: Newbie
Groups: Registered
Joined: 8/19/2020(UTC) Posts: 5  Location: Reykjavík
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Hello
I have a 3 PC setup, one running vMix, the other two work as video players through NDI.
Everything seems to work smoothly when I have just one PC sending out multiple videos but when I add the 2nd PC sending to vMix I experience a massive drop in frames in all videos simultaneously within vMix. Like the network is not handling the 2nd PC signal. Switching between PC´s letting an other one run vMix and and the PC runnig vMix previosly work as a player did not do the trick, same problem there.
The router is top of the line and all the cables are brand new cat5e with a direct connection to the router. Network on all PC´s are set to private and have a gigabit capability.
Can it be that the graphics cards are not compatible?
I really need some help cause I have been stuck on this for weeks now. All pointers are appreciated thanks :)
My PC setup:
1st (running vMix)
Intel i7-6700k 4.00GHz
32GB RAM
NVIDIA Gforce GXT 1050TI
2nd
Intel i7-4770 3.50GHz
32GB RAM
Nvidia Gforce GTX 680
3rd
Acer Aspire Nitro (laptop)
Intel i7 7700 3.80GHz
8GB RAM
Nvidia Geforce GXT 1050
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Rank: Advanced Member
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Joined: 7/1/2015(UTC) Posts: 1,151   Location: Houston TX Thanks: 319 times
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Originally Posted by: Gunnar Hauth  The router is top of the line and all the cables are brand new cat5e with a direct connection to the router. This is not enough info about the network. What make/model of router? I suspect that first. All it takes is one network link struggling to show what you describe. I prefer a dedicated switch, separate from the router & Wi-Fi.
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Rank: Newbie
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Joined: 8/19/2020(UTC) Posts: 5 Location: Reykjavík
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I suspected that the router I rented from the phone company was bad so I bought the Netgear Nighthawk AX4. But the same problem was there with the new one. https://www.bestbuy.com/...i-6-router-black/6332189 There must be a bottleneck in the NDI feed into vMix cause the more source video I put in the more frames drop in all the videos simultaneously
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Rank: Advanced Member
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ive not used NDI so far so i cant speak with direct experience but some things come to mind..
how many videos are you trying to send and what resolution ? the info ive seen suggest you will only get 2 or 3 videos at 4k running on a 1Gbps connection anything above would cause bottlenecks.. Are all the Ethernet ports on all the computers running at 1Gbps also ? if one machine has a slower port that may cause bottlenecks across everything ?
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Rank: Newbie
Groups: Registered
Joined: 8/19/2020(UTC) Posts: 5 Location: Reykjavík
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I only play videos in 1080 HD 25psk and so far no more than 3-4 video feeds at a time so the gigabit network should be able to handle that quite easily.
All PC´S are on a 1 gigabit Ethernet and all extra antivirus programs have been uninstalled.
Can it be that one PC can interfere with all the video feeds on the Network?
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Rank: Advanced Member
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Joined: 3/20/2014(UTC) Posts: 2,721  Location: Bordeaux, France Thanks: 243 times
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Use iperf3 to measure real bandwidth between all your devices. You might also have bad cables or NIC drivers wrongly set or needing updates Iperf3 : https://iperf.fr/
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 1 user thanked DWAM for this useful post.
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