Nothing very promising... found <A HREF="http://www.chez.com/kayle/ieee_1394.htm" target="_new">this</A> on Freshmeat, it appears to be a simple player. It's at v0.2 right now, so I wouldn't get my hopes up. Searching /. turned up these two but I didn't have time to investigate them further: <A HREF="http://slashdot.org/askslashdot/01/02/24/2117251.shtml" target="_new">Embedded Linux and Video Capture</A> <A HREF="http://slashdot.org/askslashdot/99/08/21/007229.shtml" target="_new">Video Production on Linux</A>
I don't do it. but i've been researching it. check: http://linuxmediaarts.com/ i hear once you get the firewire bit troubleshot, it's easy and in typical linux fashion - sickeningly fast and stable. there are some nice pages out there that list compatibility of the various 1394 I/O cards, with bugs and work-arounds listed, but i misplaced the site. I think if you stick with the big dogs (pinnacle, matrox, and the Linux specific LMA) you're set.
Like i said, i don't do it. but i hope to within the next few months. good luck