Mine

--- configure.in        2006-09-22 03:14:03.000000000 -0400
+++ configure.in.mine   2006-09-22 03:08:20.000000000 -0400
@@ -612,7 +612,7 @@
     [tc_libavutil=-lavutil], [tc_libavutil=""], [])
 LIBAVCODEC_EXTRA_LIBS="$LIBAVCODEC_EXTRA_LIBS $tc_libavutil -lm -lz
$PTHREAD_LIBS"
 TC_PKG_CHECK(libavcodec, required, LIBAVCODEC, no, [ffmpeg/avcodec.h],
- avcodec, avcodec_thread_init, FFMpeg, [http://www.ffmpeg.org/])
+ avcodec, avcodec_thread_init, libavcodec, [http://www.ffmpeg.org/])
 if test x"$have_libavcodec" = x"yes" ; then
   save_CPPFLAGS="$CPPFLAGS"
   CPPFLAGS="$CPPFLAGS $LIBAVCODEC_CFLAGS"