-sub-bkg-color n
-sub-bkg-alpha n
They control the color and alpha value used to initialize the subtitles and OSD BBOX.
With this you can have subtitles inside a traslucent rectangle.
This is useful when a movie already have "hardcoded" subtitles and you
want to overwrite them with rendered subtitles avoiding too much confusion.
patch by Salvador Eduardo Tropea <[email protected]>
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@8602 b3059339-0415-0410-9bf9-f77b7e298cf2