Hello @KSV, I've made a patch which allow resuming live stream:
https://drive.google.com/file/d/0B0d...ew?usp=sharing
New behaviour instead of ignoring --resume flag when --live is used just force to continue stream record, legacy is untouched. I'm not sure if this is a proper solution but anyway proved to be working fine.
Any chance to include this patch in your release so it won't get lost over time? (Help message was not updated)