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Safari video glitches

Safari seems to have problems with video playback.

When I play two Youtube videos simultaneously the second one fast forwards to the end.

https://youtu.be/6azGny_st8s

There are also other glitches that I couldn't capture, because they happen randomly, where the video flashes green or has other artefacts flashing.


Doesn't happen in Chrome, Firefox or while playing videos with QuickTime.

MacBook Pro 15", macOS 10.14

Posted on May 22, 2019 9:51 AM

Reply
Question marked as Top-ranking reply

Posted on May 22, 2019 10:12 AM

Here are a few fundamental troubleshooting steps that may help. Much of the information will be redundant but review everything to determine if there is something you may have overlooked.



If you don't get anywhere, you can use the following procedure to determine if the problem is internal or external to your Mac. Causes may involve your router, your ISP, the DNS Server(s) it uses, or certain user-configurable options.


  1. Shut down your Mac.
  2. Load macOS Recovery by holding and r (two fingers) while you start your Mac with a third finger.
  3. At the macOS Utilities screen, release those two fingers.
  4. Choose Get Help Online.
  5. Safari will launch, but it will lack your bookmarks, favorites, history and other preferences.


Determine if the problem persists while using Safari in that mode. After that, restart your Mac normally, and reply with your observations

2 replies
Question marked as Top-ranking reply

May 22, 2019 10:12 AM in response to Christoph2610

Here are a few fundamental troubleshooting steps that may help. Much of the information will be redundant but review everything to determine if there is something you may have overlooked.



If you don't get anywhere, you can use the following procedure to determine if the problem is internal or external to your Mac. Causes may involve your router, your ISP, the DNS Server(s) it uses, or certain user-configurable options.


  1. Shut down your Mac.
  2. Load macOS Recovery by holding and r (two fingers) while you start your Mac with a third finger.
  3. At the macOS Utilities screen, release those two fingers.
  4. Choose Get Help Online.
  5. Safari will launch, but it will lack your bookmarks, favorites, history and other preferences.


Determine if the problem persists while using Safari in that mode. After that, restart your Mac normally, and reply with your observations

Safari video glitches

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