Professionally shot footage from cameras like the RED Komodo or Blackmagic Pocket Cinema Camera 6K .

A .RAR file is a proprietary archive format developed by Eugene Roshal that is used to compress large amounts of data into a smaller, more manageable package. It is often preferred over the standard .ZIP format for high-resolution media because:

It can include optional data that helps repair the file if it becomes slightly corrupted during download. Common 6K Content Sources