How do I merge subtitles with an mp4 video extension file?

Have a try with EM Free Video Converter for iPad, when you import your videos to the program, there will be a filter on on the video task pane, click it you can find the subtitle setting. You can free download it at: a href="http://www.etinysoft.com/free-video-converter-for-ipad.html" rel="nofollow"http://www.etinysoft.com/free-video-conv…/a