SMPlayer Support Forum

If using SMPlayer with mpv, you can change the font of the OSD adding this option to preferences -> advanced -> options for mplayer/mpv:

--osd-font=fontname

Thanks, but it is not working, after added --osd-font=fontname just make mpv stop playing any video.

How can I debug?

You can take a look at the mpv output in options -> view logs -> mplayer/mpv.

You're using mplayer and not mpv. You can switch to mpv in preferences -> general -> multimedia engine.

Thanks, after switch to mpv --osd-font works

I also have to replace -subfont-osd-scale to --osd-scale= to change font size. subfont-osd-scale does not work in mpv.

BTW: Is it possible display FPS in OSD too?