Add MPEG-DASH
For those desktop systems that don't easily support HLS, but do support DASH.
DASH also has a really good, first-party JavaScript client. So that's a huge plus. HLS doesn't have that (but we should only connect to HLS on devices that support it, anyway).
Example:
https://stackoverflow.com/questions/34322021/nginx-rtmp-module-and-mpeg-dashdash-industry-dash-js