Increase subtitle size

[jaretakis]

Hi! On my panasonic viera tv, the subtitles are displayed very small. There is any way to make it bigger? Thanks!
My tv shows the subtitle, but the size continues the same, even choosing a bigger size on subtitle properties.
I pre-transcode the file, selecting matroska, Force full transcode of all channels, Force embedding subtitles and Force burning subtitles... Embedded subtitles are displayed using remote control, but don't change the size and no burnt subtitle.