HT204416: Get the latest version of Safari for your Mac

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ceisen
Level 1 (8 points)
Notebooks

Q: Problem with HTML5 videos

YouTube HTML5 videos are not playing YouTube on my MacBook Pro running El Capitan v. 10.11.5 and Safari v. 9.1.1.  Why not?

MacBook Pro (15-inch Mid 2009), OS X El Capitan (10.11.4)

Posted on Jul 7, 2016 6:49 PM

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ceisen

Q: Problem with HTML5 videos

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  • by Linc Davis,

    Linc Davis Linc Davis Jul 7, 2016 8:45 PM in response to ceisen
    Level 10 (207,931 points)
    Applications
    Jul 7, 2016 8:45 PM in response to ceisen

    Please disable all Safari extensions and test. If the problem is resolved, re-enable the extensions one or a few at a time until you find the culprit.

  • by ceisen,

    ceisen ceisen Jul 8, 2016 7:57 AM in response to Linc Davis
    Level 1 (8 points)
    Notebooks
    Jul 8, 2016 7:57 AM in response to Linc Davis

    Thanks for your quick response.  I was about to try your suggestion this morning when an inexplicable thing happened.  I awoke my MBP from sleep and connected to my home WiFi, opened a new tab in Safari, and went to YouTube.  Just to check, I tried to play a YouTube video and it worked!!!  I had not disabled any extensions yet.  Since I had restarted my MPB yesterday afternoon before the problem started, I'm wondering if some process took time to complete before HTML5 worked.  Anyhow, thanks again for your quick response.