How to install multiple video grabbers on one computer
If you need to capture from multiple VGA or DVI sources to the same computer, the Epiphan Capture software supports that function for such video grabbers as DVI2USB 3.0, DVI2PCIe, DVI2PCIe Duo and SDI2USB 3.0. In our example we will install four video grabbers: DVI2PCIe, SDI2USB 3.0 and 2 DVI2USB 3.0 products.
This demonstration shows you how the Epiphan Capture Tool captures from multiple video grabbers. If you are using the Epiphan API, DirectShow, QuickTime or Video4Linux interfaces, this demonstration will help confirm that the video grabbers are being recognized by your operating system and that your application can capture from multiple sources. (Note that software that supports capture from AV.io HD generally also supports capturing from multiple AV.io HD video grabbers in a manner similar to the way the steps described for the Epiphan Capture Tool below.)
Step 1: Connect your devices to the sources and to the PC you would like to capture to and launch the Epiphan Capture application.
You may be prompted to reinstall the hardware. If so, complete the Add New Hardware wizard.
Step 2: Select the device that you would like to record from.
When you launch the Epiphan Capture Tool, you are prompted to select a video grabber capture device to use. Select the first one.
Keep the capture software open and launch another instance of the software in another window. You will once again be prompted to select a video grabber device. This time, select the second one in the list. Repeat this operation for other devices as well.
You should now see the output from all devices in four separate windows.
Step 3: Capture output
You can now capture output from the devices as you normally would. Remember that you have four windows in which you must activate the recording and that the settings in one instance of the program have no effect on the settings in the other instances.