Video mixing, video editing, live VJing, karaoke or CCTV? You can do it all with Briteq's BT-VMS3 video monitor/switcher.
The MVS-12 from Edirol Video is a multi-viewer/matrix switcher that enables you to preview all your video inputs simultaneously.
The Roland VC-30HD is a high-grade audio-visual converter that also serves as a USB and i.Link (FireWire) interface. Live streaming or recording is a piece of cake with this compact device.