ffmpeg contribs:

    .pc hqve been fixed upstream
    delete empty win32 patch
    temporarly disable install patch. it works fine without on debian and macOSX. FC4 to be investigated

extras/contrib/src/Makefile

@@ -8,7 +8,7 @@
 #          Derk-Jan Hartman <hartman at videolan dot org>
 #          Eric Petit <titer@m0k.org>
 #          Felix Kühne <fkuehne@users.sourceforge.net>
-#          Christophe Mutricy <xtophe@nxtelevision.com>
+#          Christophe Mutricy <xtophe AT xtelevision.com>
 #          Gildas Bazin <gbazin at videolan dot org>
 #
 # This program is free software; you can redistribute it and/or modify
@@ -895,20 +895,16 @@ DISTCLEAN_PKG += libmatroska-$(LIBMATROSKA_VERSION).tar.bz2
 
 ffmpeg:
 	$(SVN) co $(FFMPEG_SVN)  ffmpeg
-	patch -p 0 < Patches/ffmpeg-svn.patch
 ifeq ($(HOST),i586-pc-beos)
 	(cd $@; patch -p 0 < ../Patches/ffmpeg-svn-beos.patch)
 endif
-ifdef HAVE_WIN32
-	patch -p 0 < Patches/ffmpeg-svn-win32.patch
-endif
 ifdef HAVE_WINCE
 	patch -p 1 < Patches/ffmpeg-svn-wince.patch
 endif
 ifeq ($(HOST),i686-apple-darwin8)
 	(cd $@;patch -p 0 < ../Patches/ffmpeg-svn-mactel.patch)
 endif
-	(cd $@; patch -p0 < ../Patches/ffmpeg-install.patch)
+#	(cd $@; patch -p0 < ../Patches/ffmpeg-install.patch)
 
 ffmpeg-$(FFMPEG_VERSION).tar.gz:
 	$(WGET) $(FFMPEG_URL)

extras/contrib/src/Patches/ffmpeg-svn.patch

-Index: configure
-===================================================================
---- ffmpeg/configure	(revision 5823)
-+++ ffmpeg/configure	(working copy)
-@@ -2118,7 +2118,7 @@
- # build pkg-config files libav*.pc and libpostproc.pc
- # libavutil.pc
- cat <<EOF >libavutil.pc
--prefix=$PREFIX
-+PREFIX=$PREFIX
- exec_prefix=\${PREFIX}
- libdir=\${exec_prefix}/lib
- includedir=\${PREFIX}/include
-@@ -2133,7 +2133,7 @@
- EOF
- 
- cat <<EOF >libavutil-uninstalled.pc
--prefix=
-+PREFIX=
- exec_prefix=
- libdir=\${pcfiledir}/libavutil
- includedir=\${pcfiledir}/libavutil
-@@ -2149,7 +2149,7 @@
- 
- # libavcodec.pc
- cat <<EOF >libavcodec.pc
--prefix=$PREFIX
-+PREFIX=$PREFIX
- exec_prefix=\${PREFIX}
- libdir=\${exec_prefix}/lib
- includedir=\${PREFIX}/include
-@@ -2164,7 +2164,7 @@
- EOF
- 
- cat <<EOF >libavcodec-uninstalled.pc
--prefix=
-+PREFIX=
- exec_prefix=
- libdir=\${pcfiledir}/libavcodec
- includedir=\${pcfiledir}/libavcodec
-@@ -2180,7 +2180,7 @@
- 
- # libavformat.pc
- cat <<EOF >libavformat.pc
--prefix=$PREFIX
-+PREFIX=$PREFIX
- exec_prefix=\${PREFIX}
- libdir=\${exec_prefix}/lib
- includedir=\${PREFIX}/include
-@@ -2195,7 +2195,7 @@
- EOF
- 
- cat <<EOF >libavformat-uninstalled.pc
--prefix=
-+PREFIX=
- exec_prefix=
- libdir=\${pcfiledir}/libavformat
- includedir=\${pcfiledir}/libavformat
-@@ -2212,7 +2212,7 @@
- 
- # libpostproc.pc
- cat <<EOF >libpostproc.pc
--prefix=$PREFIX
-+PREFIX=$PREFIX
- exec_prefix=\${PREFIX}
- libdir=\${exec_prefix}/lib
- includedir=\${PREFIX}/include
-@@ -2227,7 +2227,7 @@
- EOF
- 
- cat <<EOF >libpostproc-uninstalled.pc
--prefix=
-+PREFIX=
- exec_prefix=
- libdir=\${pcfiledir}/libpostproc
- includedir=\${pcfiledir}/libpostproc