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How to Broadcast VGA or DVI live using QuickTime Broadcaster
If you need to capture and broadcast a VGA or DVI 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. All Epiphan Systems’ frame grabbers support this software as well as all other software packages that accept high-resolution external cameras as a capture source.
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 that is being broadcasted from.
Step 1: Connect VGA2USB/DVI2USB device and start QuickTime Broadcaster.
Step 2: Configure QuickTime Broadcaster
In the “Video” tab, make sure that the “Enable Video Stream” checkmark is chosen. If you would like to record your broadcast to the local hard drive, select “Record to disk” under the preview window. You may also specify the quality, compression codec, and the amount of frames per second that you would like to broadcast at.
Under the “Source” drop-down list, select V2U***** if you are using a VGA2USB device. If a device with this name or a similar one does not appear in the drop-down list, then you may need to reinstall drivers and reboot your computer.
Choose “Source” from the Preview drop-down list in the top left corner of the window. The preview of the VGA2USB/DVI2USB output should now appear.
Now navigate to the “Network” tab. For the purpose of this tutorial, we will be doing a manual unicast to one person on the network. Select “Manual Unicast” from the “Transmission” list. In the “Address” field, the default IP address is automatically set to that of your computer. You must replace it with the IP address of the computer that will be viewing your unicast. Unless you have specific requirements for the audio and video ports, you may leave these values at their default settings.
Under the “Annotations” section, enter the description of the broadcast that you would like your viewer to see.
Step 3: Broadcast
You are now ready to broadcast from your VGA2USB/DVI2USB device. Click on “Broadcast” in the left side of the window. The text “Broadcasting” should now appear in the preview window.
In order for someone to view your unicast, they must launch an SDP file which is generated by your machine through the QuickTime Broadcaster application. Select “File > Export > SDP…” in order to generate the SDP file.
Select a name and location for the SDP file. Remember that the SDP file must be given to your viewer in order for them to be able to view your unicast. With this in mind, you may want to save it directly to a flash drive or other external media. Alternatively, you may e-mail it to them or share it with them over your network.
Once you pass the SDP file to your audience, the user needs to open it through the QuickTime Player (Windows or Mac) and they will instantly be able to view your unicast.
You have now broadcasted from your VGA2USB/DVI2USB device using QuickTime Broadcaster! Click on “Stop” on the left side of the Broadcaster window to finish your broadcast.