[FFmpeg-user] how to control quality of subtitles

[Peter Münster]

On Mon, May 25 2020, Francois Visagie wrote:

> have you looked for a subtitle palette setting on your TV where the
> problem seems to be most annoying?

There is no setting on the TV. There is only a warning:
"If the subtitle is displayed incorrectly, change encoding options."


> And/or, if subtitles from other material display acceptably on your TV you
> could also compare palettes with those and work from there.

Yes, but I need to learn about 2 things then:
- How can I get information about the palette in an MKV-file?
- How can I change such a palette?

TIA for any help,
-- 
           Peter