Since this is a local filename, you can check the following to determine what is actually in the post:
: Could be a shortened hash or part of a temporary cache name. b5 (3).mp4
Certain dashcams, security cameras, or older digital cameras use alphanumeric prefixes for video files. Since this is a local filename, you can
If you are using video editing software (like Adobe Premiere or CapCut), "b5" might be a shorthand for . The "(3)" would suggest this version of the export or clip was saved three times. How to Identify the Content Since this is a local filename