corec's fixes (to my recent commits) from issue 138 (http://ssc.ajworld.net/sm-ssc/bugtracker/view.php?id=138)

autoconf/m4/video.m4

@@ -26,6 +26,7 @@ if test "$with_ffmpeg" != "no"; then
 		AC_SEARCH_LIBS(guess_format, [avformat], have_libavformat=yes,  have_libavformat=no)
 		AC_SEARCH_LIBS(sws_scale, [swscale], have_libswscale=yes,  have_libswscale=no)
 	fi
+fi
 
 have_ffmpeg=no
 if test "$have_libavutil" = "yes" -a "$have_libavformat" = "yes" -a "$have_libavcodec" = "yes" -a "$have_libswscale" = "yes"; then

src/arch/MovieTexture/MovieTexture_FFMpeg.cpp

@@ -695,7 +695,7 @@ int URLRageFile_write( avcodec::URLContext *h, unsigned char *buf, int size )
 #if defined(MACOSX)
 	avcodec::offset_t URLRageFile_seek( avcodec::URLContext *h, avcodec::offset_t pos, int whence )
 #else
-	int64_t URLRageFile_seek( avcodec::URLContext *h, avcodec::int64_t pos, int whence )
+	int64_t URLRageFile_seek( avcodec::URLContext *h, int64_t pos, int whence )
 #endif
 {
 	RageFileBasic *f = (RageFileBasic *) h->priv_data;