MP4 nippybox

It seems like you're referring to "MP4" and "Nippybox," but there isn't a widely recognized connection between the two. **MP4** is a popular digital multimedia format commonly used to store video and audio, as well as subtitles and images. It is widely supported by most media players and streaming platforms. **Nippybox**, however, isn't a well-known term or product in the context of video formats or media streaming, at least up until my last knowledge update in October 2023. It's possible that it's a brand, service, or software that was introduced recently or is more niche. If you could provide more context or clarify what you're looking to know about MP4 and Nippybox, I would be glad to help!