If you enable the alert feature of your SpotCam, when you watch your live video in mobile app, sometimes you will see color bars stand in your timeline, looks like below screenshot.
The orange bar on the timeline indicate time points where audio events detected while green bar indicate motion events detected.
If you are using SpotCam Ring series camera, the blue bar means someone is watching the camera video on demand at that time, green bar indicates the time when someone presses the doorbell, and orange bar means the battery case of doorbell camera was removed at that time.