diff --git a/pjmedia/src/test/vectors/swapendian.c b/pjmedia/src/test/vectors/swapendian.c
new file mode 100644
index 0000000..2865d8c
--- /dev/null
+++ b/pjmedia/src/test/vectors/swapendian.c
@@ -0,0 +1,54 @@
+#include <stdio.h>
+
+int main(int argc, char *argv[])
+{
+    FILE *in, *out;
+    char frm[2];
+    unsigned count;
+
+    if (argc != 3) {
+	puts("Usage: swapendian input.pcm OUTPUT.PCM");
+	return 1;
+    }
+
+    in = fopen(argv[1], "rb");
+    if (!in) {
+	puts("Open error");
+	return 1;
+    }
+
+    out = fopen(argv[2], "wb");
+    if (!out) {
+	puts("Open error");
+	fclose(in);
+	return 1;
+    }
+
+    count = 0;
+    for (;;) {
+	char tmp;
+
+	if (fread(frm, 2, 1, in) != 1)
+	    break;
+
+	tmp = frm[0];
+	frm[0] = frm[1];
+	frm[1] = tmp;
+
+	if (fwrite(frm, 2, 1, out) != 1) {
+	    puts("Write error");
+	    break;
+	}
+
+	++count;
+    }
+
+    printf("%d samples converted\n", count);
+
+    fclose(in);
+    fclose(out);
+
+    return 0;
+}
+
+