Files with these types of "word salad" or hashed names are commonly found in the following contexts:
This alphanumeric string is almost certainly a hash or a unique content ID. Platforms like Twitch, YouTube, or Facebook use these to prevent file overwrites and to manage massive databases where simple titles would lead to collisions. 0h076o24gg442zcf1ayb0_sourceNI.mp4
Some sites use these names to obfuscate content and prevent users from easily guessing the URLs of other private videos. How to View or Manage the File Files with these types of "word salad" or
When you "Inspect Element" on a site like Instagram or Facebook to find a video's direct source, the resulting filename is often a long hash like this. How to View or Manage the File When
This identifies the file as a digital multimedia container. MP4 is a global standard for video because it offers high quality with relatively small file sizes, making it ideal for internet streaming and sharing. Typical Origins
If you have this file and cannot open it, or if it lacks metadata: How to play MP4 files in Windows - Microsoft Support