if ur maid is looking after small bb (who can;t give u feedback), then suggest u fix the camera.
if u fix the camera, make sure its those motion activated type + infra light - else whole day recording - i;m sure u wont check it finally. (too much to see)
if u record, make sure u daily going to check, else no use to record.
if u have a camera, tell ur maid, our intent is she behaves, not catch her.
if u catch her doing something - tell her u saw. dont keep quiet, else she thought is ok, or u dont know.
if u have a big kiddo (who can give feedback), then suggest u dont do it, the stress of spying on maid is really too much........why not focus on the kiddo,and try to trust the maid.......if she break ur trust........just change......dont bear wif them.