diff --git a/Video.js b/Video.js
index 87aa103a..03fc95bf 100644
--- a/Video.js
+++ b/Video.js
@@ -342,7 +342,7 @@ export default class Video extends Component {
         mainVer: source.mainVer || 0,
         patchVer: source.patchVer || 0,
         requestHeaders: source.headers ? this.stringsOnlyObject(source.headers) : {},
-        startTime: source.startTime,
+        startTime: source.startTime || 0,
         endTime: source.endTime
       },
       onVideoLoadStart: this._onLoadStart,