BSPlayer can't do that. If you want to put the subtitles on an .avi file you can use VirtualDub+vobsub and if you want to put them on a DVD then you need WinAvi+vobsub.
http://www.dvd-guides.com/content/view/58/59/ http://www.videohelp.com/forum/userguides/87065.php
Can someone move this to general discussions ?