Provide builds using Operating System encoders

[fire]

Using the os encoder decoders from ffmpeg also exposes h.264 from the os where the codec should be theoretically properly licensed.

[jamie-pate]

I guess the ideal is that they are actually available for h264 on all platforms because it's super popular? Also would need a way to deal with the possibility that it's not (probably not going to be there on Linux)

[fire]

Cisco has made efforts to provide a fully licensed decoder for Linux.

[jamie-pate]

As long as it's in your distro :) just need a way gracefully keep running if it's not