Darrell, try building on ffmpeg 0.10 with the patch
for k3b.
I'd wager you will be fine. I'll also incorporated the kde4
scope resolution changes they made to 2.2 and see if the
scope warnings are reduced.
With Slackware 14 I have been building TDE apps against ffmpeg 0.10.2 without incidents.
Other releases of Slackware with ffmpeg 0.8.7.
Darrell