Open the file in and go to Tools > Media Information . This can sometimes show the original "Encoded by" tags or the software used to create it, which provides clues about its origin. Safety Note
Filenames like "0h8kaf8spmu2xid8kh6le_source.mp4" are usually . They are common in: 0h8kaf8spmu2xid8kh6le_source.mp4
Be cautious when opening .mp4 files from unknown sources. While video files are generally safe, always ensure your media player is up to date, and avoid clicking any links that might be embedded or prompted by the file. Open the file in and go to Tools > Media Information