--- hvirtual-cvs/cinelerra/overlayframe.C	2003-12-05 23:22:15.000000000 +0100
+++ hvirtual-1.1.8/cinelerra/overlayframe.C	2004-01-27 23:29:56.000000000 +0100
@@ -598,12 +598,14 @@
 			scaletranslate_engine->input = translation_input;
 			scaletranslate_engine->in_x1 = (int)in_x1;
 			scaletranslate_engine->in_y1 = (int)in_y1;
-			scaletranslate_engine->in_x2 = (int)in_x2;
-			scaletranslate_engine->in_y2 = (int)in_y2;
+			// we need to do this mumbo-jumbo in order to get numerical stability
+			// other option would be to round all the coordinates
+			scaletranslate_engine->in_x2 = (int)in_x1 + (int)(in_x2 - in_x1);
+			scaletranslate_engine->in_y2 = (int)in_y1 + (int)(in_y2 - in_y1);
 			scaletranslate_engine->out_x1 = (int)out_x1;
 			scaletranslate_engine->out_y1 = (int)out_y1;
-			scaletranslate_engine->out_x2 = (int)out_x2;
-			scaletranslate_engine->out_y2 = (int)out_y2;
+			scaletranslate_engine->out_x2 = (int)out_x1 + (int)(out_x2 - out_x1);
+			scaletranslate_engine->out_y2 = (int)out_y1 + (int)(out_y2 - out_y1);
 			scaletranslate_engine->alpha = alpha;
 			scaletranslate_engine->mode = mode;
 
@@ -2254,7 +2256,6 @@
 { \
 	temp_type opacity = (temp_type)(alpha * max + 0.5); \
 	temp_type transparency = max - opacity; \
-	int out_w = out_x2 - out_x1; \
  \
 	for(int i = pkg->out_row1; i < pkg->out_row2; i++) \
 	{ \
@@ -2371,6 +2372,9 @@
 	int out_y1 = scale_translate->out_y1;
 	int out_x2 = scale_translate->out_x2;
 	int out_y2 = scale_translate->out_y2;
+
+	int out_w = out_x2 - out_x1;
+
 	float alpha = scale_translate->alpha;
 	int mode = scale_translate->mode;
 
@@ -2382,7 +2386,7 @@
 //	Timer a;
 //	a.update();
 //printf("ScaleTranslateUnit::process_package 1 %d\n", mode);
-	if(out_x2 - out_x1 != in_x2 - in_x1)
+	if(out_w != in_x2 - in_x1)
 	{
 		scale_array(x_table, 
 			out_x1, 
@@ -2398,7 +2402,20 @@
 		in_y2,
 		0);
 
+	if (mode == TRANSFER_REPLACE && (out_w == in_x2 - in_x1)) {
+		// if we have transfer replace and x direction is not scaled, PARTY!
 
+		char bytes_per_pixel = input->calculate_bytes_per_pixel(input->get_color_model());
+		int line_len = out_w * bytes_per_pixel;
+		int in_start_byte = in_x1 * bytes_per_pixel;
+		int out_start_byte = out_x1 * bytes_per_pixel;
+		for(int i = pkg->out_row1; i < pkg->out_row2; i++) 
+		{
+			memcpy (out_rows[i] + out_start_byte, 
+				in_rows[y_table[i - out_y1]] + in_start_byte , 
+				line_len);
+		}
+	} else
 	switch(input->get_color_model())
 	{
 		case BC_RGB888: