Use a tool like MediaInfo to check the metadata, codec, resolution, and creation date of the file. This can tell you if it's a security recording, a fragment of a larger video, or a screen capture.
Right-click the file (on Windows) or select 'Get Info' (on macOS) to see if the "Created" or "Modified" date helps identify when it was made [Source]. 049g.mp4
Look at the folder where the file is stored. The surrounding files or folder name often provide context about its purpose [Source]. Use a tool like MediaInfo to check the