Update video.js

Author: upekshapriya

lib/classes/video.js

@@ -382,7 +382,7 @@ class Video {
 
             // add hvc1 tag to codec so it is playable by Quicktime
 
-            command.outputOptions('-tag:v:0', 'hvc1');
+            command.outputOptions('-tag:v:'+ videoIndex, 'hvc1');
 
             // Make sure we are only attempting to use 8 bit with fallback
             // binary