How to change gamma and contrast through pi

Question

I want to watch the movie. I use omxplayer and computer monitor. Is it possible to change gamma and contrast?

Hello and welcome! Please take the tour and visit the helpcenter to see how things work here. — Ghanima, Dec 30 '17 at 13:32

score 1 · Accepted Answer · answered Dec 30 '17 at 13:43

It sounds hard to believe but maybe omxplayer does not offer such a feature. User Deltabeard has put it this way on Reddit:

You can change the colour settings of your TV. Looking at the omxplayer project page, it doesn't seem to have brightness controls. Maybe use mpv instead as that has brightness, contrast controls amongst many other features.

You could use xrandr or xgamma as configuration utilities of the X-server itself (well if using omxplayer with X-server).

DISPLAY=:0 xgamma -rgamma 1.23 -bgamma 2.34 -ggamma 3.45 – user2497 Dec 30 '17 at 19:20 — user2497, Dec 30 '17 at 19:20

How to change gamma and contrast through pi

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