Epiphan's capture cards capture lossless video from just about any video source including VGA, DVI, HDMI and SDI and seamlessly integrate with third party video encoding, scaling and streaming software.
Plug and play AV converters are optimized for live streaming, video conferencing and lecture capture.
HDMI/USB 2.0 Camera selector comparison chart.
Dual Video to USB 3.0 Converter comparison chart.