obs-studio: Open Broadcaster Software is free and open source software for video recording and live streaming.

https://obsproject.com/
https://github.com/jp9000/obs-studio

After checking around in obs-studio IRC it is clear others are using it on Linux and there is a ppa for ubuntu.

I have been using obs-studio for the last few days (both latest stable release [0.6.4 as of this writing] and master) and it appears quite stable not to mention useful. It has a number of features that I haven't seen from anything else for Linux. I was able to record in 60fps on OSS ATI drivers and upload with excellent results. Does not seem to suffer from performance issues as some other utilities do.

The original project (as obs-studio is a multi-platform rewrite) is the defacto standard on Windows for live streaming (I've used it there as well). Quite a nice project.

I think it would be great to see obs-studio added to packman repository and look forward to your feedback.