TP-Link Vigi NVR1008 Any Way to Access Streams, PTZ, Etc From HTTPS

Hi,
I've just bought a TP-Link VIGI NVR1008, which has nicely automatically detected all my cheap Chinese cameras (ONVIF compatible).
So far I can only connect to it via the VIGI app on my mobile - the security manager software just crashes on my Win10 box, so can't use that.
Does anyone know if there's any sort of API for this NVR as it's definitely listening on HTTPS?
Am I able to get streams from any of the channels, send PTZ "commands" etc?

Thanks,
Richie