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Flash YouTube videos plays fine, but HTML5 YouTube videos cause problems. When agent setting in Safari is downgraded to 7.1 (from Default/8.0) HTML5 plays fine. So this is probably YouTube problem because user agent setting can fix it.
 
Done with Safari for now

Haven't upgraded to Yosemite yet. But ever since Mavericks, many youtube videos display a string of letter AAAA's in place of the video controls and titles. I saw some stuff on forums to fix this, but they didn't work for me. Opened up Chrome just now and it shows the videos just fine. So, Apple, keep breaking Safari. Meanwhile I won't be using it anymore.
 
Get Chrome. Yes, it still uses Flash but it's built in and NOT the plugin that other browsers use. The point is that you can open it, watch the video, and close Chrome right then and there.

That allows you to view content while keeping you other browsers from playing Flash stuff on random pages.

Neither Chrome nor Safari uses Flash for YouTube any more. They both use HTML5.
 
issues with advertising

this is not an Apple issue. they are implementing new code that is related to the ads that play before videos. they are getting ready for their new feature that allows people to pay to not see ads. obviously they are having issues with it

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I use ghostery. I paused blocking in my settings for ghostly and now can watch the videos again
 
I had this error too now it shows a lot less after i disabled hardware acceleration, it happens with Chrome and Firefox, not just Safari.
 
Funny because I just came from YouTube.

Can I sue them? I heard this weird, garble noise that almost blew out my eardrums while my headphones were on full blast!!!!!!!!!!!!!!!
 
Since this update released yesterday, my Macbook Pro Retina 15 Mid-2014 started to lag once in a while...
 
this is not an Apple issue. they are implementing new code that is related to the ads that play before videos. they are getting ready for their new feature that allows people to pay to not see ads. obviously they are having issues with it
I just played the Cortana video and YouTube videos on Windows 8.1 with Internet Explorer, no problems.

Rebooted into Yosemite, played How to Train Your Dragon preview in Safari, a few seconds into the video, Black Screen of Death and a horrible squeal.

This is Apples fault pure and simple, nothing new, Apple are the worst coders on the Planet, ever since I started buying Apple stuff I've had problems with Safari and other programmes and apps.
You've only got to look on this forum to see how bad Apple is doing in the programming area.
I'm always looking back.
 
In the Safari preferences there is a setting to allow/block 3rd party web plug-ins. Took me about 2 minutes to figure this out. It was in one of the beta releases then taken off to be re-added on master final.
 
Funny because I just came from YouTube.

Can I sue them? I heard this weird, garble noise that almost blew out my eardrums while my headphones were on full blast!!!!!!!!!!!!!!!
I know, I just played a video on YouTube, nearly blew my speakers, what a horrible noise, I won't be doing that again for a while. The Black Screen of Death wasn't pretty either.
 
Maybe it's just me, but Safari crashes or slows down quite frequently since I installed Yosemite. Wonder if that's a general issue or if I should try a clean install.
 
Quick Fix

Activate the developer menu in Safari and force the browser to identify as another user agent. Fixes the issue.
 
turn off ghostery

I use ghostery. I paused blocking in my settings for ghostery and now can watch the videos again.


oops spoke to soon. it worked for one video but now acting up again
 
It really is sad. I can't think of any other time in Apple history they've had so many issues all at one time. iPhones bending, iPads vibrating, iOS 8.0.1 literally ruining devices, poor wifi issues in Yosemite, a buggy, buggy iOS 8, - the list is endless. It's just sad.

It is still a good Apple, but it is definitely not the same Apple it was just a few years ago. Let's hope the deterioration does not continue.
 
Wow! I can't believe I've been directly quoted by MacRumors - I feel honoured! :p

Before anyone asks - yes I have sent feedback to Apple :)

A temporary fix is to try this:

1) Open Safari
2) Go to Preferences
3) Select the Advance Tab
4) At the bottom of the window enable "Show Develop menu in menu bar" and close Preferences window
5) Navigate to the new Develop menu in the Safari menu bar
6) Under User Agent, select either Google Chrome or Firefox (depending on what you have installed)

This should allow you to watch Youtube videos without any problems.

You may have to do this everytime you start safari but at least it is a temporary fix until Apple/YouTube sort it out...

I hope they bring out a fix asap! :)
 
Safari YouTube Problem

I appear to be able to get around the problem by changing the Settings on the YouTube Video Browser. All videos seem to default o 360, increasing the video resolution to 480, 720HD or 1080HD seems to work although sometimes I have to refresh the page.
 
Glad I saw this before trying to hard to fix the issue. I thought it was just a bandwidth overload.
 
My hunch is Apple isn't going to get the Yosemite OS correct until they release 10.10.7 or so. :(

I, along with millions of others, will wait patiently on the sidelines, thank you. :D

I am waiting....so is my job...we cannot have any downtown due to incompatibilities etc

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Haven't upgraded to Yosemite yet. But ever since Mavericks, many youtube videos display a string of letter AAAA's in place of the video controls and titles. I saw some stuff on forums to fix this, but they didn't work for me. Opened up Chrome just now and it shows the videos just fine. So, Apple, keep breaking Safari. Meanwhile I won't be using it anymore.

I THOUGHT THIS WAS JUST ME WITH A FONT CONFLICT

ScreenShot2014-11-21at32723PM.png


HOW DO WE FIX THIS? obviously a font issue but font finagler doesn't fix it
 
Flash YouTube videos plays fine, but HTML5 YouTube videos cause problems. When agent setting in Safari is downgraded to 7.1 (from Default/8.0) HTML5 plays fine. So this is probably YouTube problem because user agent setting can fix it.

it alike saying "I upgraded my system and my app doesn't work...so its apple's fault" No, your app is no long compliant with new system...in this case, a browser.

seems like old tagging or settings in youtube...meaning they are not keeping up with whats happening

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Is it called Yosemite because "upgrading" is like jumping into a volcano?

a really really uninromed comment

sorry, but if something gets better and other things aren't keeping up, who do you blame?

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Exactly. And still, even after it has been determined that the issue was on YouTube's end, people are coming into this thread to blame Apple and bring up numerous issues that have nothing to do with this incident.

Just proves that some people really want to dislike Apple at all costs.

Apple haters...yet they are Apple fans...hmm....obviously you guys know nothing except how to whine

c1a7eb5b-e925-4780-8333-e0f73766cb7a-large.jpeg
 
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