> ## Knowledge Base Index
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> Use this file to discover available pages before exploring further.
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# What is a .w3u list?

It is a file format used to store _multimedia_ playlists, based on _json_.

|| Json is the acronym for JavaScript Object Notation, a lightweight text format for data exchange. A subset of the literal notation of JavaScript objects although today, due to its wide adoption as an alternative to xml, it is considered a separate language format.

# Why is it created?

** w3u ** was born as an improvement of the _m3u_ format, adding more advanced functionalities and facilitating the use of new features in _multimedia_ players, such as the possibility of synchronizing a list hosted on a remote server or the inclusion of additional information by the author on the list.

|| M3U (MPEG Version 3.0 URL) is a file format that stores media playlists. Initially, the possibility of creating and opening M3Us was only supported by Winamp, but currently the format is supported by multiple players: AIMP, foobar2000, iTunes, JuK, VLC, Windows Media Player, Wiseplay and XMMS among others.

# What do you use it for?

The main use of the ** w3u ** lists is to gather in a single file different audio, video and _streaming_ links, for personal use or to be shared with other users in a simple way.

Thanks to ** w3u **, any user can create their own list of _multimedia_ content from different sources and formats and share it with anyone.

For example, a ** w3u ** list is very useful for gathering all your videos and ordering them to your liking regardless of where they are staying.

# What is a w3u like?

A w3u is nothing more than a text file **. Txt ** that contains ordered references to show the different fields of a list.

Pastebin: [https://pastebin.com/iZGHVCFR](https://pastebin.com/iZGHVCFR)

```{ 
   "name": "w3u list",
   "author": "w3u author",
   "url": "https://pastebin.com/iZGHVCFR",
   "image": "https://i.imgur.com/5rjqSPj.png",
   "contact": "w3u@testmail.com",
   "info": "Sample list for w3u tutorial using publicly available links",
   "groups": [ 
      { 
         "name": "Movies",
         "image": "https://i.imgur.com/ExU2ep3.png",
         "stations": [ 
            { 
               "name": "Tears of Steel",
               "image": "https://i.imgur.com/zHW0cSVl.jpg",
               "url": "https://ftp.nluug.nl/pub/graphics/blender/demo/movies/ToS/ToS-4k-1920.mov",
               "subtitle": "https://pastebin.com/JDfuRkZe"
            },
            { 
               "name": "Sintel",
               "image": "https://i.imgur.com/s2Xd81sl.jpg",
               "url": "https://ftp.nluug.nl/pub/graphics/blender/demo/movies/Sintel.2010.720p.mkv"
            }
         ]
      },
      { 
         "name": "Live",
         "image": "https://i.imgur.com/WP7j2dX.png",
         "stations": [ 
            { 
               "name": "NASA",
               "image": "https://i.imgur.com/aCj27P5.png",
               "url": "https://nasa-i.akamaihd.net/hls/live/253565/NASA-NTV1-Public/master.m3u8"
            },
            { 
               "name": "NASA ISS",
               "image": "https://i.imgur.com/aCj27P5.png",
               "url": "https://iphone-streaming.ustream.tv/uhls/9408562/streams/live/iphone/playlist.m3u8"
            }
         ]
      }
   ],
   "stations": [
      {
         "name": "Timelapse Paris",
         "image": "https://upload.wikimedia.org/wikipedia/commons/thumb/9/97/Timelapse_Tour_Eiffel_%C3%A0_Paris.webm/800px--Timelapse_Tour_Eiffel_%C3%A0_Paris.webm.jpg",
         "imageScale": "centerCrop",
         "url": "https://commons.wikimedia.org/wiki/File:Timelapse_Tour_Eiffel_%C3%A0_Paris.webm",
         "isHost": true
      },
      {
         "name": "HTML5 Video",
         "image": "https://i.imgur.com/sjrn6Ii.png",
         "url": "http://clappr.io/demo/",
         "embed": true
      },
      {
         "name": "Me at the zoo",
         "image": "https://img.youtube.com/vi/jNQXAC9IVRw/0.jpg",
         "imageScale": "centerCrop",
         "url": "https://www.youtube.com/watch?v=jNQXAC9IVRw"
      }
  ]
}```