When I turn on youtube video through Facebook the video is disappearing but the sound is still going (only when I turn on the video on the full screen). What's wrong?
MacBook Pro (Retina, 13-inch,Early 2015), OS X Yosemite (10.10.4)
Might be a cookies, cache, extensions, or plug-ins issue.
From your Safari menu bar click Safari > Preferences then select the Privacy tab.
Click: Remove All Website Data
Then delete the cache.
Open a Finder window. From the Finder menu bar click Go > Go to Folder
Type or copy paste the following
~/Library/Caches/com.apple.Safari/Cache.db
Click Go then move the Cache.db file to the Trash.
Quit and relaunch Safari to test.
If that didn't help, from the Safari menu bar click Safari > Preferences then select the Extensions tab. Turn that OFF, quit and relaunch Safari to test.
If that helped, turn one extension on then quit and relaunch Safari to test until you find the incompatible extension then click uninstall.
If it's not an extensions issue, try troubleshooting third party plug-ins.
Back to Safari > Preferences. This time select the Security tab. Deselect: Allow plug-ins. Quit and relaunch Safari to test.
If that made a difference, instructions for troubleshooting plugins here.
Might be a cookies, cache, extensions, or plug-ins issue.
From your Safari menu bar click Safari > Preferences then select the Privacy tab.
Click: Remove All Website Data
Then delete the cache.
Open a Finder window. From the Finder menu bar click Go > Go to Folder
Type or copy paste the following
~/Library/Caches/com.apple.Safari/Cache.db
Click Go then move the Cache.db file to the Trash.
Quit and relaunch Safari to test.
If that didn't help, from the Safari menu bar click Safari > Preferences then select the Extensions tab. Turn that OFF, quit and relaunch Safari to test.
If that helped, turn one extension on then quit and relaunch Safari to test until you find the incompatible extension then click uninstall.
If it's not an extensions issue, try troubleshooting third party plug-ins.
Back to Safari > Preferences. This time select the Security tab. Deselect: Allow plug-ins. Quit and relaunch Safari to test.
If that made a difference, instructions for troubleshooting plugins here.
Thank you for your help. Turning off extensions helped. But it's wired because the list of extensions is empty and turning it off in general helped. I can't do this second step: "If that helped, turn one extension on then quit and relaunch Safari to test until you find the incompatible extension then click uninstall." - nothing on extension list.
Should I keep it off in general?
If it is working better, yes.
Leave it turned off 🙂
Also have the same problem on two MacBooks. The same issue with some YouTube videos and also with Netflix in fullscreen.
Tried all the steps above. When the mouse is moved the video is restored for a few seconds. Could this have something to do with energy saving modes on the CPU or graphics cards or something? Like the OP, I also have an early 2015 MacBook Pro retina. It is exclusively an issue with Safari and not any other browser.
You might want to consider starting a new discussion. Since this one is marked solved, less people are likely to look at it. You can link to this one.
Thanks
Actually I thought that this problem is solved but it's not! Exactly the same as above when I move the mouse the video is coming back for a few seconds.
Safari - Facebook -full screen youtube videos disappearing.
