For anyone interested,

I rolled a Slackware 11.0 package for myself and posted it here:

The above is a generic link that points to all versions of xvidcap packaged for all versions of Slackware -- I only did the 1.1.4rc2 package.  I used rc2 since I ran into the same "swScaler: rgb565 is not supported..." problem with my 16 bit color depth system that I saw in the help forum.

Anyway, I just wanted you guys to know it was there and that the build script is included with the package.