"Amazing XXX.mkv.mp4" appears to be a filename that combines two video container formats (.mkv and .mp4). This often happens when a file has been renamed incorrectly or when a user is attempting to convert a video file.
If you are having trouble playing the file because of its unusual naming or codec, these tools are highly recommended for their "all-in-one" codec support: Amazing XXX.mkv.mp4
: The industry standard for playing almost any file extension, including malformed ones. "Amazing XXX
If you are looking for a "draft paper" (documentation or instructions) on how to handle or convert this specific file type, here are the most common technical procedures. 1. Renaming the File Amazing XXX.mkv.mp4