ilan-s, you may replace all fontbanks (Font 7, 8, 9 10 and 11) to fit your language. Whatever size of fonts you like, you may put into this firmware.Use MTKFontCreator to generate desired fonts and MTKRemaker to replace them in firmware.
Now, choosing different Language in OSD you would in fact change font size.
What for you need to change playback speed?
