diff --git a/pack-vid b/pack-vid
index f5c70bf..79cbded 100755
--- a/pack-vid
+++ b/pack-vid
@@ -164,6 +164,7 @@ function convert( $src, $dest, $options ) {
             '-pass', '2',
             '-g', $keyframeInt,
         ], $audio, [
+            '-movflags', '+faststart',
             '-y', $dest
         ] )
     );