diff --git a/tools/intel_infoframes.c b/tools/intel_infoframes.c
index b6d289f1..3b78d1fa 100644
--- a/tools/intel_infoframes.c
+++ b/tools/intel_infoframes.c
@@ -491,6 +491,11 @@ static void dump_vendor_hdmi(DipInfoFrame *frame)
 
 		printf("- 3D Format: %s\n",
 		       s3d_structure_to_string(s3d_structure));
+
+		/* Side-by-side (half) */
+		if (s3d_structure == 8)
+			printf("- 3D Ext Data 0x%x\n",
+			       frame->vendor.s3d_ext_data);
 	}
 }