I've sold all my thunderbolt capture cards to switch my camera inputs from SDI to NDI... with some huge benefits!
1) It is much faster than a physical live input card. (No more big latency from interactive computers and potentially cameras.)
2) It is resolution and frame rate agnostic! Meaning you can send any custom resolutions at any FPS. (no more limited by conventional formats.)
3) There are cameras, switchers and converters (NDI to physical ins or outs) that exists already. This means again you can have cameras feeds with almost no latency coming in.
4) It supports stream WITH Alpha and without alpha.
5) It's been integrated into at least: Resolume, Watchout, d3, Touch Designer, WISIWYG, Mad mapper (and Isadora soon)
6) You can share the video stream to many programs at the same time! This was the big deal breaker for me.
I know there is a NDI to Syphon app but Id love to see native support for NDI input in Magic...
ps And native output for Mac would be lovely to ; )