The time of the event doesn’t necessarily coincide with any of the times that you’re checking. That’s the whole point of looking for visual cues.
But one of them potentially will though. A gun firing leave smoke behind.
Even if there’s other smoke in the video, you’re looking at 5 minutes of a 24-hour video, and not scanning through 24 hours of a video manually. And an AI could use a binary search to find any moments of smoke (or not). Not saying it’s a one-size-fits-all solution, just one very important tool in a toolbox.
I don’t mean to be rude, but I’m exhausted talking about this topic, and so if you don’t mind, I’m just going to bail at this point.