Index: libvo/vo_yuv4mpeg.c
===================================================================
RCS file: /cvsroot/mplayer/main/libvo/vo_yuv4mpeg.c,v
retrieving revision 1.14
diff -u -r1.14 vo_yuv4mpeg.c
--- libvo/vo_yuv4mpeg.c	14 Dec 2002 17:12:40 -0000	1.14
+++ libvo/vo_yuv4mpeg.c	16 Jun 2003 03:35:53 -0000
@@ -63,6 +63,8 @@
 static FILE *yuv_out;
 static int write_bytes;
 
+static int first_frame = 1;
+
 #define Y4M_ILACE_NONE         'p'  /* non-interlaced, progressive frame */
 #define Y4M_ILACE_TOP_FIRST    't'  /* interlaced, top-field first       */
 #define Y4M_ILACE_BOTTOM_FIRST 'b'  /* interlaced, bottom-field first    */
@@ -229,6 +231,13 @@
     int rgb_stride, uv_stride, field_height;
     unsigned int i, low_ofs;
 
+    // No need to write the frame-before-the-first-frame, since it is junk.
+    if (first_frame)
+    {
+      first_frame = 0;
+      return VO_TRUE;
+    }
+
     fprintf(yuv_out, "FRAME\n");
 
     if (using_format != IMGFMT_YV12)
@@ -278,6 +287,13 @@
 	int rgb_stride, uv_stride, field_height;
 	unsigned int i, low_ofs;
 	
+        // No need to write the frame-before-the-first-frame, since it is junk.
+        if (first_frame)
+        {
+          first_frame = 0;
+          return;
+        }
+
 	fprintf(yuv_out, "FRAME\n");
 	
 	if (using_format != IMGFMT_YV12)