Green screen when playing video

I fixed it!

It is extremely simple! Just change your color profile to anything other than default one!!!

The issue was only in full screen, and if I moved the mouse it disappeared (moving the mouse gives an overlay of movie controls, similar to the overlay of a subtitle.

I have resolved the issue on my Mac mini.

I have reinstalled Catalina by restarting and pressing “command +r” or if it was “shift”+”command”+”r”, don’t really remember which one it was, but now everything works fine.

Recently I got the problem back, but very rare. For example if I used Youtube, some clips where green, and some without any issues.

My MacMini is connected to a Marantz AVR (NR1609) and then to my Samsung TV.

When I checked "colorsync" I have three profiles, (.icc files) (SD170xxx, Marantzxxx, Samsungxxx).

And yes, you are absolutely right, depending on which one I use I can recreate, or get rid of, the problem.

if you get “some” clip green, can I ask if this greenish part supposed to be black?

if yes turn off the night shift then try again.

I have the same problem on my macmini late 2014 since upgrading to Catalina, and use the TV app to view former ITunes purchased movies. However, the picture is fine when subtitles are active, (and the picture turns green again when there is no subtitle) or if i move the cursor.

If I run a blue ray or DVD movie I do not get this issue.

I'm having the same trouble. The green is showing up in nearly everything shown full screen (YouTube, streaming services, movies in my home library, etc.). It disappears as soon as the mouse is moved and the movie controllers appear. As soon as they auto-hide, it recommences. Attaching a screenshot for reference.

Mac mini (late 2014)

Mac OS X Catalina 10.15.1

1.4 GHz Dual-core Intel i5

4 GB RAM

Intel HD Graphics 5000 1536 MB

The ”Night shift” option is not available in this setup, for some reason. It is on my MacBook Pro, so I know where to look.

It is really odd, and the next thing I need to do is to hook up my MacBook, or try FireWire to hdmi on the Mac mini, only to once again isolate the issue to the Mac mini.

Every thing works fine, except some clips on YouTube. There are some cases when the picture has the green “overlay” depending on the resolution, and if I could try for example this very old clip, https://youtu.be/BQn1gJdVKi4 there is no way I have been able to run this, without getting the green overlay, as soon as the player controls goes away (only full screen).

Very annoying, but it is definitely not a showstopper, only very annoying, especially since it was not there before Catalina. Then I don’t know how to work with the ColorSync profiles. Any good reading suggestions, done a lot of googling, a link would be appreciated.

Same issue on my late 2012 mini Mac after Catalina update. Can you corms the issue is only in full screen mode also does the screen restore if you move the mouse while watching said video.

Ok reinstalled and the problem has not resolved

Bingo. This is the trick. Thanks!

How do you change it please?

Worked like a charm. Thanks.

It worked for me. Thanks zracon !

Go to system preferences -> displays -> color -> then choose one of the other options