Streaming a live event requires three main components:
- Audio/video equipment — includes one or more cameras and one or more microphones. Other events might have multiple cameras and multiple microphones, all managed by professional video switching gear. In either case, the camera or switcher must have the ability to output the combined audio/video signal, usually via an HDMI or HD-SDI connector.
- Encoder — a computer or stand-alone device that takes the output from the camera or video switcher and converts it to a format that can be streamed on the Internet. During setup of the event, the encoder is configured to send the encoded stream to the streaming service via an Internet connection.
- Streaming service — receives the encoded stream from the encoder, and in turn makes the stream available to viewers anywhere in the world. Contemporary streaming services are cloud-based and typically can serve an unlimited number of simultaneous viewers. The streaming service makes it possible for you to embed a video window on any web page (including at your web site) so that your users can view.
On the U-M campus, Michigan Media is often used as the video producer. They can provide camera operators and all the equipment necessary to capture video of an event, and make arrangements for live streaming as requested. Campus units are free to use other local video providers, or to use their own equipment.
Encoder Options & Network Connections
The simplest solution for a live event is for the video producer to provide an encoder. In that case ITS's video staff will work with the producer to settle on the configurations to be used. If you are providing your own video equipment, you'll need to arrange for an encoder. This can be your own or ITS can provide an onsite staff person to provide and manage an encoder.
Encoders must have a reliable Internet connection to stream, ideally a wired Ethernet connection for consistency. A WiFi connection may be possible depending on the capabilities of the encoder and quality of the WiFi signal at your event location.
There are several current options for streaming services for live events, including YouTube, which allows free live streaming or other service providers. In some cases, Google Hangouts or BlueJeans can be adapted for broadcasting simple events with basic equipment like a webcam. In that case the service is all-in-one and you can avoid considerations like encoding and streaming services. The number of simultaneous viewers may be limited.