nippy files mp4

It seems like you're looking for information about Nippy files in MP4 format. However, "Nippy files" is not a commonly recognized term in the context of MP4 files or digital media. If you're referring to a specific type of compressed file, video encoding, or software, could you please provide more context or clarify your request? This will help me assist you better. If you're looking for general information about MP4 video files, I can provide details on their characteristics, how to play, convert, or edit them, etc.