Vines and Instagram videos will not play or load on Mac

See title. This problem is most prevalent on twitter and tumblr (where audio posts won't play or load, either).
I cleared the cache and my cookies, but that didn't do anything. I found that I needed a Java update and installed that, and the problem went away for two days, but now it's back. I'm using the latest version of Firefox.

Some problems with Flash video playback can be resolved by disabling hardware acceleration in your Flash Player settings. (See [[Flash Plugin - Keep it up to date and troubleshoot problems|this article]] for more information on using the Flash plugin in Firefox).
To disable hardware acceleration in Flash Player:
#Go to this [http://helpx.adobe.com/flash-player/kb/video-playback-issues.html#main_Solve_video_playback_issues Adobe Flash Player Help page].
#Right-click on the Flash Player logo on that page.
#Click on '''Settings''' in the context menu. The Adobe Flash Player Settings screen will open.
# Click on the icon at the bottom-left of the Adobe Flash Player Settings window to open the Display panel. <br/> <br/>[[Image:fpSettings1.PNG]] <br/>
# Remove the check mark from '''Enable hardware acceleration'''.
# Click '''Close''' to close the Adobe Flash Player Settings Window.
# Restart Firefox.
This [http://www.macromedia.com/support/documentation/en/flashplayer/help/help01.html Flash Player Help - Display Settings page] has more information on Flash Player hardware acceleration, if you're interested.
Does this solve the problem? Let us know.

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Try this - Reset the iPad by holding down on the Sleep and Home buttons at the same time for about 10-15 seconds until the Apple Logo appears - ignore the red slider - let go of the buttons. (This is equivalent to rebooting your computer.) No data/files will be erased. http://support.apple.com/kb/ht1430
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(Edited)
Hi, Jeromie, (and all the other viewers who seem to find this thread interesting)
Let me give you my latest observations:
Until today, I had not even heard of a reference to 'HTML5' videos. (I now realize that HTML videos have been around for quite a while, I'm just not a video junkie.) And interestingly, until today, whenever I got a blank video screen on Yahoo News or others, it would only tell me to update to the latest Flash Player and suggested nothing else.
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Message was edited by: mjm7274

I was working on getting the answer to your question, but I didn't have the drive or folder mapped to my PC. Itunes allowed me to connect to my mac media without a mapped drive, but apparently there was a permission problem accessing the video.
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Message was edited by: Jim Simon

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+++++++++++++++++++++++++++++++++++++++++++++++
I am adding this to my original question:
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++++++++++++++++++++++++++++++++++++++++++++++++
Thank you

You're welcome. Glad I was able to help you.

Vines and Instagram videos will not play or load on Mac

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