As I said, it's controlled by the software playing the file. If you're using VLC, you can search the internet for how to change subtitle settings. If you're playing directly off the SD card or external HD on something that's not a computer, search the internet for how to change subtitle settings on that particular device.So I CANNOT change the height of the font ????
It seems always to be the same 'proportion' if I looked
on VLC or my Samsung TV
And I find the 'rate' too large