Media of any sort (including text and json files), may be available in several formats. This is particularly relevant to media assets such as images of differing resolutions, or videos encoded with different codecs.
By using an appropriately structured folder we can create a Media package - that is a form of document package familiar to OSX users.
# IPFS Folders
In IPFS a folder is effectivelya small text file which contains a simple link list of multihash entires corresponding to the folder contents. We can author these link lists at any time, and as with any IPFS structure they are immutable. Adding a new item to the link list results in a new multihash for the "folder" structure.
Given this information we can resurrect a unix file system folder as and when we like. This virtual folder can be served directly from an ipfs enabled server, or the assets downloaded from IPFS and then served from a conventional web server.