Because this is marked as an "event" file, most dashcams will it, meaning it will not be overwritten by the normal loop recording cycle until you manually delete it or format the SD card.
Often indicates the "A" channel, which usually refers to the front-facing camera in a multi-camera setup. a_27_ev.mp4
Does this file belong to a specific brand of camera, like a , Thinkware , or 70mai , that you need help troubleshooting? Because this is marked as an "event" file,