--- libdv-0.104.old/playdv/playdv.c
+++ libdv-0.104/playdv/playdv.c
@@ -325,7 +325,10 @@
   filename = poptGetArg(optCon);
   if (rc < -1) goto bad_arg;
   if((filename == NULL) || !(poptPeekArg(optCon) == NULL))
+  {
+      if (isatty (fileno (stdin))) goto display_version;
 	  filename = "-";
+  }
   poptFreeContext(optCon);
 #else
   /* No popt, no usage and no options!  HINT: get popt if you don't