For the last two years, I have been webcasting. By webcasting, I and a bunch of my buddies have been presenting on various Microsoft technologies using Lync as the communication medium. Its been great. We have slowly progressed from using a basic webcam to using higher end HD cameras.
One of the lessons that I learned and wanted to share and hopefully save you some time/money is the decision of whether to go HDMI or HD-SDI as the connection between your video cameras and your video switchers and the Lync PC.
My current broadcasting setup is something like:
Everything is connected via HDMI. It was a step up from my webcam plugged into my computer. However, I am encountering some issues with using HDMI to connect my components which are:
- HDMI has no locking mechanism so the cables fallout or get loose.
- There appears to be a distance limitation with HDMI. I have had to position the cameras a distance from the video switcher (25 feet). It doesn’t work well. The video sometimes goes jittery or black or drops out on a recurring basis.
Thus, we are planning to switch everything to HD-SDI. HD-SDI has a locking BNC connector type of connection. This will secure the cables to the devices and also allow us to have longer cable runs.
Our next generation setup may look like:
We are switching all the cables runs to SDI if possible. The output from most computers nowadays are some form of HDMI so we are planning to get HDMI/SDI converters. This would allow us to support the scenario of the computer on the podium at the front of the room with the HDMI/SDI converter. The converter would connect using SDI to the video switcher at the back of the room .
If you are planning this kind of implementation, I would recommend saving yourself the pain/money and go directly to SDI for your connection.
If you want to see my webcasts, I have posted the webcasts to Youtube (Dean Youtube Channel)