I have searched all the web and still couldn't find a reply. All the stupid web players can't accept a subtitle from outside even they don't have any code to add your own html for showing a subtitle. I don't want it to be joined in the video file as you, I want to add other language files and change when I want. So better download the video whatever you'd like to watch with a video download manager and convert it to avi file with a video converter and play them together in your own pc video player. Waiting for HTML5 to get included all the video/audio formats for all browsers but not just Google Chrome