movie playback color changing

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movie playback color changing

I've just upgraded to High Sierra on a late 2012 Mac Mini.

When I watch a movie or TV program through iTunes, when it is in fullscreen, the color changes after the onscreen controls disappear. The color changes to mostly green, pink and purple tones. If I move the cursor and bring the onscreen controls back, the color returns to normal. It was working well prior to the OS upgrade. It only occurs in fullscreen mode.

The color change does not happen if I use Quicktime player to watch the same videos.

Any ideas?

Thanks

Mac mini (Late 2012), OS X Yosemite (10.10.1), null

Posted on Oct 3, 2017 5:33 AM

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Answer 1

Oct 8, 2017 7:03 AM in response to Dr Egg

I have this issue as well, with the same model of Mac mini, except that it happens in both iTunes and QuickTime: as soon as the on-screen controls disappear, the colors blow out. It started happening immediately after the upgrade to High Sierra.

One additional data point: if I use Screen Sharing on another Mac to connect to the Mac mini, the colors return to normal. It's as if Screen Sharing keeps the screen active in the same way that moving the mouse does.

Changing ColorSync profiles does not help. Turning off hardware acceleration or running in safe mode might help, but there is no way to do that in recent versions of QuickTime.

It does not happen in VLC or any web browser.

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Answer 2

Oct 8, 2017 7:50 AM in response to Silverhammer

I've posted a new question with a more descriptive title and links to all of the related questions I found. Hopefully we can consolidate and get more attention on this.

Fullscreen video turns pink and green in QuickTime/iTunes

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