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I am not talking about connecting a VGA monitor to a Mac. I'm referring to plugging in a VGA output in to my Mac. I want the VGA to show up as a video device, so that I can run a projector's feed through UStream.

What hardware is needed to digitize a VGA input in real time to send for broadcast?

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Does the UStream software give you a clue as to what hardware you need? It looks like you'd just need UStream Producer Pro and any capture card that fits your budget. – bmike May 7 '12 at 17:40
up vote 1 down vote accepted

You need a product like this:

KVM Console to USB 2.0 Portable Laptop Crash Cart Adapter

However I don't know if that will show up as a streamable device (or if it's even compatible with Mac). There are also people who have had success buying a webcam and a VGA > Analogue adapter, and wiring the analogue adapter into the webcams electronics to get it back into the computer.

Unfortunately, no real "easy" solution exists.

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Seems like this is what I was looking for. However, I actually ended up using Ustream Desktop Presenter to send the projector to the computer. Thanks for your answer though! – daviesgeek Jul 20 '12 at 19:14

I use a product from to give me a video input on my mac, then use a VGA-to-TV adapter to stream powerpoint over ustream. Video is really choppy and crappy looking, but for simple non-moving slides, it's OK for ustream.

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