Index: source/blender/avi/intern/endian.c
===================================================================
--- source/blender/avi/intern/endian.c	(revision 50636)
+++ source/blender/avi/intern/endian.c	(working copy)
@@ -48,29 +48,13 @@
 #ifdef __BIG_ENDIAN__
 static void invert(int *num)
 {
-	int new = 0, i, j;
-
-	for (j = 0; j < 4; j++) {
-		for (i = 0; i < 8; i++) {
-			new |= ((*num >> (j * 8 + i)) & 1) << ((3 - j) * 8 + i);
-		}
-	}
-	
-	*num = new;
+	*num = (((*num >> 24) & 0xff) | ((*num >> 8) & 0xff00) |
+		((*num << 8) & 0xff0000) | ((*num << 24) & 0xff000000));
 }
 
 static void sinvert(short int *num)
 {
-	short int new = 0;
-	int i, j;
-
-	for (j = 0; j < 2; j++) {
-		for (i = 0; i < 8; i++) {
-			new |= ((*num >> (j * 8 + i)) & 1) << ((1 - j) * 8 + i);
-		}
-	}
-
-	*num = new;
+	*num = (((*num >> 8) & 0xff) | ((*num << 8) & 0xff00));
 }
 
 static void Ichunk(AviChunk *chunk)