The number 1615646442863 is a Unix timestamp in milliseconds. It represents March 13, 2021, at 14:40:42 UTC [1].
If renaming it does not work, the file might be corrupted or only partially downloaded.
The .mp4 extension is missing the dot ( . ) before it. This can prevent it from opening automatically. 2. How to Open the File _VID-1615646442863blbon1mp4
Rename the file from _VID-1615646442863blbon1mp4 to _VID-1615646442863blbon1.mp4 .
This file name, , appears to be a automatically generated identifier for a video file, likely created by a messaging app (like WhatsApp or Signal), a screen recorder, or a cloud backup service. The structure suggests a timestamp ( 1615646442863 ) combined with a random string ( blbon1 ) and a modified file extension ( mp4 instead of .mp4 ). The number 1615646442863 is a Unix timestamp in milliseconds
Here is a detailed breakdown of what this file is and how to handle it: 1. Understanding the File Name
Once renamed, it should open in any standard media player (VLC, QuickTime, Google Photos). 3. What to Do If It Won't Open a screen recorder
If this file is in a cloud storage folder (like Google Drive or OneDrive), it likely represents a memory from 2021 that was backed up from a mobile device [2]. It is safe to move, rename, or delete, depending on whether you want to keep the media.