Greek subtitles Scrambled?
 

I use D.I.K.O and trying to add Greek subtitles I took Scrambled letters

I think the problem is with spumux which use the icon descriptor UTF-8 ISO8859-1

The char sets that I can use are:

Greek DOS 737
Greek ISO 28597
Greek Windows 1253
Windows ANSI

Is there any possibility to take right Greek subtitles?

Thanks in advance