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ubuntu-restricted-extras facts for kids
| Developer(s) | various |
|---|---|
| Stable release |
67
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| Platform | Ubuntu (Linux) |
| Available in | English |
| License | Various (Ubuntu MOTU Developers) |
Ubuntu Restricted Extras is a special collection of computer programs for the operating system called Ubuntu. It helps your computer do things that Ubuntu doesn't include right away. This is usually because of legal rules or copyright laws.
This package is like a bundle that installs several useful things:
- It lets you play MP3 music files.
- You can watch unencrypted DVDs.
- It adds special fonts, like the ones from Microsoft.
- You get the Adobe Flash plugin, which used to be needed for some online videos and games.
- It includes special programs called codecs. These help your computer understand and play many different types of audio and video files.
Contents
Why Ubuntu Needs Extra Software
The programs in Ubuntu Restricted Extras are not part of Ubuntu when you first install it. The people who create Ubuntu want to include only completely free software. Free software means you can use it, change it, and share it freely.
Understanding Software Rules
Some programs in this package are not free. For example, the Adobe Flash plugin is a closed-source program. This means its code is kept secret, and you cannot change it. Also, many types of media files, like MP3 music or H.264 videos, have special rules called software patents. In some countries, you might need to pay a fee to use or share software that plays these types of files. Because of these rules, Ubuntu doesn't include them by default.
What's Inside the Package
The Ubuntu Restricted Extras package is a "metapackage." This means it's a small package that tells your computer to download and install many other useful programs. These other programs help your computer handle different types of media and files.
How It Connects to Other Programs
Starting with Ubuntu version 10.10, some of these extra programs are included in another package called ubuntu-restricted-addons. This package is already part of Ubuntu, making it easier to get some of the features you need.
Why It's Not Included by Default
Because of the legal rules and patents mentioned earlier, the Ubuntu Restricted Extras package is not put on any Ubuntu installation CDs or downloads by default. Users need to choose to install it themselves after setting up Ubuntu. This helps Ubuntu follow the rules for distributing its main software.