@Sir Humphrey said:
perhaps the EC could just decide as Austman suggests but the committee could choose to also propose an ordinary resolution at a general meeting along the lines that JT suggests about who can view the footage
Yes, that can work. A committee decision can’t override a full OC decision. And if done at the next AGM it shouldn’t even cost the OC anything in additional meeting expenses.
But, as I know from committee and chair experience in my OCs with CCTV systems, any resolution does need a bit of care in the wording to give it the flexibility that invariably will be needed – so it usually has to include letting the committee decide.