In your configuration file (~/.mplayer/config) add this:
# Set subtitle file encoding. unicode=yes utf8=yes # set size subfont-text-scale=3.25 # path to size font font=/usr/share/fonts/TTF/arial.ttf
Of course, you'll need a character set who support utf8 (e.g. arial.ttf).
If you have subtitles in other encoding than utf8, you must translate the file from whatever encoding you have to utf8 using iconv command.
# example (run iconv -l to see all supported encodings) iconv -f ISO_8859-2 -t UTF8 input.srt > output.srt