Safari YouTube full screen problem

Question

Safari YouTube full screen problem

My MacBookAir (model: 6,2) has a problem in case I'm using Safari to watch YouTube videos.

In full screen mode the video start to flickering.

I made a video about this: https://www.youtube.com/watch?v=5lydKDKn5O4

In other browsers like Chrome or Opera the problem not exists.

I ran Apple Hardware Test it says no problem...😕

If I set Safari's user agent to chrome there is no problem.

I had the same problem with Safari under Yosemite in the past.

MacBook Air, OS X El Capitan (10.11.1)

Posted on Nov 12, 2015 2:29 PM

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Answer 1

Nov 12, 2015 2:32 PM in response to talamascaproject

Most YouTube content requires using Flash.

Open System Preferences > Flash Player then select the Advanced tab.

Click Delete All under Browsing Data and Settings

Quit then relaunch Safari then try a video.

If that doesn't help, from your Safari menu bar click Safari > Preferences then select the Privacy tab then click: Remove All Website Data

Quit and relaunch Safari again then try a video.

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Answer 2

Nov 12, 2015 2:46 PM in response to Carolyn Samit

Thank You for the fast answer!

I don't use Flash. 😉

I removed all website data so now start the testing phase.

The problem was not constant it happened in 90% at video-playing.

I will let you know if this solved the problem.

Thank You again!

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Answer 3

Nov 27, 2015 12:06 PM in response to Carolyn Samit

After few weeks the problem still exists and not just with YouTube videos.

I reinstall OS X and after that there was not problem.

But now again. 😠

It's clearly Safari's problem.

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Answer 4

Eric Root

Level 10

684,033 points

Nov 28, 2015 10:24 AM in response to talamascaproject

Safari Web Content not responding - Yosemite

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