xine-lib-extras-freeworld build fails, ffmpeg issue? builder wonkiness?

I can build this just fine locally with mock, but not in rpmfusion's buildsys. Compare/contrast: me: http://rdieter.fedorapeople.org/xine-lib-extras-freeworld-1_1_16_3-1_fc11/ rpmfusion buildsys: http://buildsys.rpmfusion.org/logs/fedora-development-rpmfusion_free/3433... failure says: checking for FFMPEG... configure: error: Package requirements (libavcodec >= 51.20.0) were not met: No package 'libavcodec' found The root.log's of each look identical to me, both populating buildroot with ffmpeg-devel-0.5-2.fc11. any ideas? -- Rex