: If standard software won't open it, use a player like VLC Media Player which supports almost all variations of the MP4 format.
If you have encountered this file and are unsure of its origin, follow these steps to safely identify its content: JOSSMOVIE_ VIDEO 13mp4
: This likely refers to the source platform, production name, or the creator's username. "Joss" is sometimes used in regional slang (like in Indonesia) to mean "excellent" or "great," suggesting a title like "Excellent Movie." : If standard software won't open it, use