"Personal video recorders free you from the constraints of TV
schedules, let you skip advertising, pause live TV, and much more.
You can find commercial PVR products, such as Windows Media Centre
Edition; dedicated devices, such as TiVo; and open source PVR
projects, such as MythTV, which is widely hailed as the best free
PVR solution, with features that even commercial competitors lack.
MythTV's downside is its complex setup; you need to install a Linux
distro, then MythTV, which can be a daunting prospect for
non-technical users. In 2003, developers combined MythTV with the
Knoppix live CD distribution, which aims at simplifying Linux
installations, to create KnoppMyth, a product that's as easy to use
as Knoppix, with the power of MythTV.
"As anyone who has tried to install MythTV from the source can
testify, simply getting it running can be quite a task. You need to
be an adept user of Linux, and be able to take care of
dependencies, file and directory permissions, compiler options, and
other such complex tasks..."