I have a DS-2CD2342WD-I with DSM 6.0 / SS 7.2 (yes, both beta). Cam is using ONVIF - SS found it & is recording events (motion, etc) - but playback via LiveView / Timeline is broken. IE can play back the files individually (using the plugin) if selected from Filestation. DS-Cam works without issues & plays the second stream. I have a ticket into Synology for the ONVIF / Generic ONVIF driver - will keep you posted if I get feedback.