i have a .mkv which had subtitles. i wanted to rip subtitles from it and so i used virtualdub to do so. however, when i ripped the subtitle from the .mkv file, the subtitles had this ,,Default,,0000,0000,0000,, thing on every single line. may i know how to remove them? note that when i play the mkv file, the subtitles are shown totally fine. please help!