diff --git a/js/kiri-driver-cam.js b/js/kiri-driver-cam.js
index eb2a3010..3f59c337 100644
--- a/js/kiri-driver-cam.js
+++ b/js/kiri-driver-cam.js
@@ -1531,7 +1531,7 @@ var gs_kiri_cam = exports;
             }
 
             // update time calculation
-            time += pos.f / 60 * dist;
+            time += (dist / (pos.f || 1000)) * 60;
 
             // if (comment && !stripComments) {
             //     nl.append(" ; ").append(comment);
diff --git a/js/license.js b/js/license.js
index bcd076aa..c8905e4d 100644
--- a/js/license.js
+++ b/js/license.js
@@ -1,7 +1,7 @@
 var exports = {
     COPYRIGHT:"Copyright (C) 2014-2019 Stewart Allen <sa@grid.space> - All Rights Reserved",
     LICENSE:"See the license.md file included with the source distribution",
-    VERSION:"1.4.9"
+    VERSION:"1.5.0"
 };
 if (!module) var module = {};
 module.exports = exports;