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I can find specs for Vmix pc builds but are there slightly different needs for an all NDI setup? I figure that NDI would be less taxing but unsure.
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Originally Posted by: kclark  I can find specs for Vmix pc builds but are there slightly different needs for an all NDI setup? I figure that NDI would be less taxing but unsure. Take a look here, outdated I've been told but will still work: https://www.vmix.com/pro...x-reference-systems.aspx
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Originally Posted by: kclark I figure that NDI would be less taxing but unsure. NDI involves working with compressed video which needs processing power to decode or encode, more than you would need for taking uncompressed video from a capture device. So you certainly need at least as powerful a CPU as for a non-NDI or low-usage NDI system. What you might not need are lots of PCIe slots and lanes for video input/output cards, but you might need more ethernet bandwidth to be available (unless all your sources are low-bandwidth NDI|HX). That might take the form of a 2.5Gb or 10Gb port, or at least dual 1Gb ports.
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Originally Posted by: zenvideo Originally Posted by: kclark I figure that NDI would be less taxing but unsure. NDI involves working with compressed video which needs processing power to decode or encode, more than you would need for taking uncompressed video from a capture device. So you certainly need at least as powerful a CPU as for a non-NDI or low-usage NDI system. What you might not need are lots of PCIe slots and lanes for video input/output cards, but you might need more ethernet bandwidth to be available (unless all your sources are low-bandwidth NDI|HX). That might take the form of a 2.5Gb or 10Gb port, or at least dual 1Gb ports. Great observation! Allow me to add some details from a personal project. I was producing a live stream from a software engineering conference. I wanted to do it all-NDI. 2 - BirdDog P200 PTZ cameras 2 - Birddog Studio NDI encoders (capturing laptops) 1 - Birddog Mini (Capture aux laptop) 2 x Lenovo Tiny PC running NDI Studio monitor to projectors Everything connected to a Unifi 1G POE+ switch. My vMix host as dual 1G NICs. With a single 1G link to the switch there was just too much traffic. Adding a second 1G link eliminated the network bottleneck. Even so, running 1080p60 used enough CPU that my i7-5775C was >85%. Dropping everything to 1080p30 reduced CPU load to 60% and all was well. Happily, software engineers are not that animated. Don't really need 60 fs.
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 1 user thanked mjgraves for this useful post.
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