If you are having trouble playing the file, ensure you have a versatile player like VLC Media Player or MPV , which can handle almost any .mp4 encoding.
If you own the file and want to know its origin, you can check the "Properties" (Windows) or "Get Info" (Mac) to see if there are "Comments" or "Copyright" tags that link back to a specific production company. Could you clarify what kind of guide you need? For example, Casey Kisses and Kat Take Everything - Part 1.mp4
If you are looking for details about the content of this file, here is what typically helps in these cases: If you are having trouble playing the file,