Index: contrib/Jamfile
===================================================================
--- contrib/Jamfile	(revision 1553)
+++ contrib/Jamfile	(working copy)
@@ -178,11 +178,12 @@
     Depends $(<) : $(>) ;
     Depends lib  : $(<) ;
     
+    DVDREAD_PATCH = "$(PATCH) -p0 < ../patch-libdvdread-udf.patch && " ;
+    
     if $(OS) = MACOSX
     {
-        DVDREAD_PATCH = "$(PATCH) -p0 < ../patch-libdvdread-css-vlc-dylib.patch &&" ;
-    }
-    
+        DVDREAD_PATCH += "$(PATCH) -p0 < ../patch-libdvdread-css-vlc-dylib.patch &&" ;
+    }    
 }
 if $(CSS) = 1 # Include CSS support in libdvdread if requested
 {
@@ -190,7 +191,7 @@
     {
         cd `dirname $(>)` && CONTRIB=`pwd` &&
         rm -rf libdvdread && (gzip -dc libdvdread.tar.gz | tar xf - ) && 
-        cd libdvdread &&
+        cd libdvdread && $(DVDREAD_PATCH)
         ./configure --prefix=$CONTRIB --cache-file=$CONTRIB/config.cache --disable-shared --with-libdvdcss=$CONTRIB &&
         $(MAKE) && $(MAKE) install &&
         $(STRIP) $CONTRIB/lib/libdvdread.a
Index: contrib/patch-libdvdread-udf.patch
===================================================================
--- contrib/patch-libdvdread-udf.patch	(revision 0)
+++ contrib/patch-libdvdread-udf.patch	(revision 0)
@@ -0,0 +1,76 @@
+diff -Naurp libdvdread-0.9.7.orig/dvdread/dvd_reader.c dvdread/dvd_reader.c
+--- libdvdread-0.9.7.orig/dvdread/dvd_reader.c	2006-10-06 07:58:03.000000000 +0000
++++ dvdread/dvd_reader.c	2008-02-22 19:42:47.000000000 +0000
+@@ -1393,6 +1393,28 @@ int DVDFileSeek( dvd_file_t *dvd_file, i
+   return offset;
+ }
+ 
++int DVDFileSeekForce( dvd_file_t *dvd_file, int offset, int force_size )
++{
++  /* Check arguments. */
++  if( dvd_file == NULL || offset < 0 )
++    return -1;
++
++  if( dvd_file->dvd->isImageFile ) {
++    if( force_size < 0 )
++      force_size = (offset - 1) / DVD_VIDEO_LB_LEN + 1;
++    if( dvd_file->filesize < force_size ) {
++      dvd_file->filesize = force_size;
++      fprintf(stderr, "libdvdread: Ignored UDF provided size of file.\n");
++    }
++  }
++
++  if( offset > dvd_file->filesize * DVD_VIDEO_LB_LEN ) {
++    return -1;
++  }
++  dvd_file->seek_pos = (uint32_t) offset;
++  return offset;
++}
++
+ #ifndef HAVE_UINTPTR_T
+ #warning "Assuming that (unsigned long) can hold (void *)"
+ typedef unsigned long uintptr_t;
+@@ -1444,7 +1466,7 @@ ssize_t DVDReadBytes( dvd_file_t *dvd_fi
+   memcpy( data, &(secbuf[ seek_byte ]), byte_size );
+   free( secbuf_start );
+ 
+-  dvd_file->seek_pos += byte_size;
++  DVDFileSeekForce(dvd_file, dvd_file->seek_pos + byte_size, -1);
+   return byte_size;
+ }
+ 
+diff -Naurp libdvdread-0.9.7.orig/dvdread/dvd_reader.h dvdread/dvd_reader.h
+--- libdvdread-0.9.7.orig/dvdread/dvd_reader.h	2006-10-06 08:12:31.000000000 +0000
++++ dvdread/dvd_reader.h	2008-02-22 19:42:28.000000000 +0000
+@@ -240,6 +240,8 @@ ssize_t DVDReadBlocks( dvd_file_t *, int
+  */
+ int DVDFileSeek( dvd_file_t *, int );
+ 
++int DVDFileSeekForce( dvd_file_t *, int, int );
++
+ /**
+  * Reads the given number of bytes from the file.  This call can only be used
+  * on the information files, and may not be used for reading from a VOB.  This
+diff -Naurp libdvdread-0.9.7.orig/dvdread/ifo_read.c dvdread/ifo_read.c
+--- libdvdread-0.9.7.orig/dvdread/ifo_read.c	2006-01-22 12:19:19.000000000 +0000
++++ dvdread/ifo_read.c	2008-02-22 19:42:28.000000000 +0000
+@@ -106,6 +106,10 @@ static inline int DVDFileSeek_( dvd_file
+   return (DVDFileSeek(dvd_file, (int)offset) == (int)offset);
+ }
+ 
++static inline int DVDFileSeekForce_( dvd_file_t *dvd_file, uint32_t offset, int force_size ) {
++  return (DVDFileSeekForce(dvd_file, (int)offset, force_size) == (int)offset);
++}
++
+ 
+ ifo_handle_t *ifoOpen(dvd_reader_t *dvd, int title) {
+   ifo_handle_t *ifofile;
+@@ -1659,7 +1663,7 @@ static int ifoRead_VOBU_ADMAP_internal(i
+   unsigned int i;
+   int info_length;
+ 
+-  if(!DVDFileSeek_(ifofile->file, sector * DVD_BLOCK_LEN))
++  if(!DVDFileSeekForce_(ifofile->file, sector * DVD_BLOCK_LEN, sector))
+     return 0;
+ 
+   if(!(DVDReadBytes(ifofile->file, vobu_admap, VOBU_ADMAP_SIZE)))