I don’t have occasion to use security cameras, but I imagined that in this day and age, a surveillance camera would create a digital record, and save it to the cloud, to be accessed by a cell phone or computer.
If that is the technology, then there would be no point in entering the house. If the cops did not confiscate all the cell phones, laptops, and iPads of all the principals at the scene, then the cops screwed up, indeed.
If a recording was saved in the cloud, I would think there would be evidence of its existence, even if someone tried or succeeded in deleting it.