Video Capture
For capturing video from webcams and capture cards, vvvv offers different solutions:
VL.Video
This NuGet is shipping with vvvv. Referencing it, gives you the VideoIn node which supports all USB cameras that have a UVC 1.1 driver.
VL.Devices.Decklink
For capturing from Blackmagic Decklink devices.
VL.Devices.uEye
For capturing from IDS Imaging uEye Cameras.