20190815_233920-8dauufhb.mp4 <PC>

: The date the video was recorded (August 15, 2019). 233920 : The timestamp of the recording (11:39:20 PM).

If this is a file from a private security system, a specific dashcam model, or a legal evidence database, you may need to check the original source or the software used to generate it. 20190815_233920-8dauUfHb.mp4

: Likely a unique alphanumeric string generated by a specific device, cloud service, or dashcam. : The date the video was recorded (August 15, 2019)