The preview of the DVI2USB 3.0 output appears. Choose “Source” from the Preview drop-down list in the top left corner of the window.If a device with this name or a similar one does not appear in the drop-down list, you may need to reinstall drivers and reboot your computer. Under the “Source” drop-down list, select the DVI2USB 3.0 (or other video grabber).You may also specify the quality, compression codec, and frames per second for your stream. If you would like to record your broadcast to the local hard drive, select “Record to disk” under the preview window. In the “Video” tab, make sure that the “Enable Video Stream” checkmark is chosen.Step 1: Connect your DVI2USB 3.0 device (or other Epiphan video grabber) to your Mac via the included USB 3.0 cable and start QuickTime Broadcaster. In this tutorial, we will be setting up a LAN Unicast – a broadcast to one person on the same local area network as the machine running QuickTime Broadcaster. All Epiphan Systems’ video grabbers support this software as well as all other software packages that accept high-resolution external cameras as a capture source. If you need to capture and broadcast a stream from a VGA, DVI or HDMI™ (non HDCP) video source using a Mac OS X machine, QuickTime Broadcaster is an easy to use and free software utility that allows you to do just that.