Nvidia shield and Channel recording

After the issues with no roku support and limited ability to record. I think I'm going to get an nvidea shield. I wanted to ask... With channels dvr... Can I record from any streaming service? Or is it only the ones mentioned on the CHANNELS DVR website. For example, can I record a live TV streaming service from the UK?

The only streaming services supported are Locast and TV Everywhere. Both are US-only.

No other streaming support is available at this time.