Index: mencoder.c
===================================================================
RCS file: /cvsroot/mplayer/main/mencoder.c,v
retrieving revision 1.218
diff -u -r1.218 mencoder.c
--- mencoder.c	13 Aug 2003 16:29:00 -0000	1.218
+++ mencoder.c	20 Aug 2003 22:34:31 -0000
@@ -488,7 +488,7 @@
 sh_audio=d_audio->sh;
 sh_video=d_video->sh;
 
-  if(!video_read_properties(sh_video)){
+  if(!sh_video || !video_read_properties(sh_video)){
       printf(MSGTR_CannotReadVideoProperties);
       mencoder_exit(1,NULL);
   }