Index: mp4info.rb
===================================================================
--- mp4info.rb	(revision 41)
+++ mp4info.rb	(working copy)
@@ -185,6 +185,10 @@
       data = read_or_raise(io_stream, size, "Premature end of file")
       
       cache = Tempfile.new "mp4info"
+      
+      # required for Windows
+      cache.binmode
+      
       cache.write data
       cache.open
       cache.rewind