Index: libpipi/trunk/configure.ac
===================================================================
--- libpipi/trunk/configure.ac	(revision 3534)
+++ libpipi/trunk/configure.ac	(revision 3543)
@@ -216,7 +216,12 @@
 # Build the movie thumbnailer?
 ac_cv_my_have_ffmpeg="yes"
-PKG_CHECK_MODULES([LIBAVCODEC], [libavcodec], [:], [ac_cv_my_have_ffmpeg=no])
-PKG_CHECK_MODULES([LIBAVFORMAT], [libavformat], [:], [ac_cv_my_have_ffmpeg=no])
-PKG_CHECK_MODULES([LIBSWSCALE], [libswscale], [:], [ac_cv_my_have_ffmpeg=no])
+PKG_CHECK_MODULES([LIBAVCODEC], [libavcodec-uninstalled], [:], [ac_cv_my_have_ffmpeg=no])
+PKG_CHECK_MODULES([LIBAVFORMAT], [libavformat-uninstalled], [:], [ac_cv_my_have_ffmpeg=no])
+PKG_CHECK_MODULES([LIBSWSCALE], [libswscale-uninstalled], [:], [ac_cv_my_have_ffmpeg=no])
+if test "${ac_cv_my_have_ffmpeg}" = "no"; then
+  PKG_CHECK_MODULES([LIBAVCODEC], [libavcodec], [:], [ac_cv_my_have_ffmpeg=no])
+  PKG_CHECK_MODULES([LIBAVFORMAT], [libavformat], [:], [ac_cv_my_have_ffmpeg=no])
+  PKG_CHECK_MODULES([LIBSWSCALE], [libswscale], [:], [ac_cv_my_have_ffmpeg=no])
+fi
 AM_CONDITIONAL(USE_FFMPEG, test "${ac_cv_my_have_ffmpeg}" = "yes")