bdphifer
Level 1 (4 points)
Mac OS X

Q: Safari videos out of sync with audio

When I play videos on Safari, the audio is not synced properly with the video. If have experienced this on many sites, and when I copy the URL of the video to another browser (i.e. Firefox) the video plays fine. So I believe the issue has something to do with Safari, not my iMac, nor my internet.

iMac, OS X El Capitan (10.11.6)

Posted on Oct 7, 2016 2:48 PM

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bdphifer

Q: Safari videos out of sync with audio

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  • Helpful answers

  • by dominic23,

    dominic23 dominic23 Oct 8, 2016 2:56 AM in response to bdphifer
    Level 8 (42,122 points)
    Mac OS X
    Oct 8, 2016 2:56 AM in response to bdphifer

    Go step by step and test.

     

    1. Disable Extensions and test.

     

        Safari > Preferences > Extensions

        Uncheck boxes beside “Enable Extension”  and test.

        Enable Extensions one by one and test.

        To uninstall any extension, select it and click the “Uninstall” button.

     

    2. Delete Caches.

        Close all windows and quit all applications.

        Hold "option" key down and click "Go" menu in the Finder menu bar.

        Select "Library" from the dropdown.

        Library > Caches > com.apple.Safari

        Right click the com.apple.Safari file and select "Move To Trash”.

     

    3. Delete Cookies.

     

        Safari > Preferences > Privacy > Cookies and other website data:

        Click the “Details” button.

        Remove all cookies except  ones from Apple, your internet service provider and banks.

     

    4. Delete com.apple.Safari.plist file and test.

        Empty the Trash.

        Quit all applications.

        Hold the option key down and click the "Go" menu in the Finder menu bar.

     

        Select "Library" from the drop down.

     

        Library > Preferences >  com.apple.Safari.plist

        Right click on it and select "Move it to Trash".

        Restart.    Relaunch Safari.

     

        If this doesn’t help, “Put Back” the com.apple.Safari.plist

     

        Right click on  the Trash icon in the Dock and select “Open”.

        Right click on the com.apple.Safari.plist and select “Put Back”.

     

    5. If the steps posted above don’t help, please run EtreCheck and post the report here.

     

        http://etresoft.com/etrecheck

        Download it, open Downloads folder, click on it to open and select ”Open”.

        “Choose a problem” from the popup menu box and then “Start EtreCheck” in the dialog.

        Click “Share Report” button in the toolbar, select “Copy to Clipboard”

        and then paste it when you reply.