Links to related software: Applications
A fully featured GPL video editor with builtin DV capture support.
A GPL graphical application that lets you control all of the features of an IEEE-1394 Digital Camera, see video, save or ftp images, and connect to a Real streaming server.
A GPL video server TCP daemon and client library that uses dv1394 for multiple simultaneous transmissions over a single bus using private isochronous channels.
An easy-to-use GPL DV non-linear editing with excellent support for DV/1394 and AV/C.
"MythTV is a GPL licensed suite of programs that allow you to build the mythical home media convergence box on your own using Open Source software and operating systems." It can be configured to work with FireWire set top boxes.
MythTV.org's wiki page on FireWire: http://www.mythtv.org/wiki/index.php/FireWire
Here is an extensive article about getting FireWire set top boxes to work with MythTV under Ubuntu: MythTV Edgy Firewire