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Cannot see embedded Youtube videos; I get a black screen

Posted

So, embedded Youtube videos suddenly stopped working. I can still watch videos on the Youtube website just fine. Making an embedded video fullscreen also allows me to see it. I have seen an answer on another thread asking to try Safe Mode. Interestingly, disabling every add-on and plugin (besides Flash and Shockwave) does not fix the issue, but using Safe Mode, which theoretically does the same thing, fixes it :S

The embeds are black screen, and when I hover the mouse over them I see the Refresh and HD buttons, but not the Youtube icon on the lower right. Clicking the lower right area still brings me to the Youtube website, so the button still works, just isn't visible. Reinstalling Waterfox and using a new profile do not fix the issue.

I can't test the issue on Firefox because it has a long-standing problem of the Flash Player crashing constantly every second, which rendered it unusable and is the reason I switched to Waterfox in the first place (in which Flash does not crash).

The troubleshoot information with all Waterfox add-ons disabled (which again, doesn't fix the issue, despite Safe Mode fixing it) can be seen by navigating to the "More system details" on the menu to the right.

Thanks!

Modified by Kelvets

Chosen solution

I'm not aware of any Waterfox-specific issues or fixes, so this is some standard guidance that addresses the most common issues with the Flash Player plugin. I'm sure you've seen some of it before, but just in case:

(1) If you have any recorders/downloaders that interact with Flash media make sure they are as up-to-date as possible, or disable them temporarily.

(2) Disable hardware graphics acceleration in Firefox and in Flash

(A) In Firefox, un-check the box here and restart:

orange Firefox button (or Tools menu) > Options > Advanced > General > "Use hardware acceleration when available"

(B) In Flash, see this support article from Adobe: http://helpx.adobe.com/flash-player/kb/video-playback-issues.html#main_Solve_video_playback_issues

(3) Disable protected mode (Windows Vista and higher)

See this support article from Adobe under the heading "Last Resort": Adobe Forums: How do I troubleshoot Flash Player's protected mode for Firefox?

Note: the 32-bit and 64-bit plugins inhabit different folders, so you will need to do the mms.cfg fix in both folders to cover both Waterfox and Firefox.

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Additional System Details

Installed Plug-ins

  • Next Generation Java Plug-in 10.45.2 for Mozilla browsers
  • NPRuntime Script Plug-in Library for Java(TM) Deploy
  • Shockwave Flash 11.9 r900
  • 5.1.20513.0
  • The plugin allows you to have a better experience with Microsoft SharePoint
  • Office Authorization plug-in for NPAPI browsers

Application

  • User Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:24.0) Gecko/20100101 Firefox/24.0 Waterfox/24.0

More Information

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Name: YouTube Auto Replay Version: 2.88 Enabled: false ID: YouTubeAutoReplay@arikv.com
Important Modified Preferences
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jscher2000
  • Top 10 Contributor
2357 solutions 20872 answers

Chosen Solution

I'm not aware of any Waterfox-specific issues or fixes, so this is some standard guidance that addresses the most common issues with the Flash Player plugin. I'm sure you've seen some of it before, but just in case:

(1) If you have any recorders/downloaders that interact with Flash media make sure they are as up-to-date as possible, or disable them temporarily.

(2) Disable hardware graphics acceleration in Firefox and in Flash

(A) In Firefox, un-check the box here and restart:

orange Firefox button (or Tools menu) > Options > Advanced > General > "Use hardware acceleration when available"

(B) In Flash, see this support article from Adobe: http://helpx.adobe.com/flash-player/kb/video-playback-issues.html#main_Solve_video_playback_issues

(3) Disable protected mode (Windows Vista and higher)

See this support article from Adobe under the heading "Last Resort": Adobe Forums: How do I troubleshoot Flash Player's protected mode for Firefox?

Note: the 32-bit and 64-bit plugins inhabit different folders, so you will need to do the mms.cfg fix in both folders to cover both Waterfox and Firefox.

Was this helpful to you? 2
Reply
jscher2000
  • Top 10 Contributor
2357 solutions 20872 answers

Incidentally, if you have this problem on secure (HTTPS) pages and you notice a shield icon to the left of the URL in the address bar, check this article regarding the mixed content blocker: How does content that isn't secure affect my safety?

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Helpful Reply

I had disabled hardware accel in Waterfox and it didn't fix the embeds, but doing so in Firefox fixed them for Waterfox! Odd. It didn't fix the constant Flash Player crashing, though. Thanks for solving the embeds!

Modified by Kelvets

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jscher2000
  • Top 10 Contributor
2357 solutions 20872 answers

Helpful Reply

For the severe issues, you really should disable the protected mode feature. If Windows gives you problems with permissions, try this way:

(1) In a My Computer or Windows Explorer window, open this folder:

C:\Windows\SysWOW64\Macromed\Flash

If that folder does not exist, then you are using 32-bit Windows, and you can open the following folder instead:

C:\Windows\System32\Macromed\Flash

(Note: This folder exists on both 32-bit and 64-bit Windows, but on 64-bit Windows Firefox uses the Flash player in the SysWOW64 folder instead.)

(2) Check for a file named mms.cfg:

Note: If you do not see file extensions such as .ocx, .dll, .exe, and .cfg on the files in this folder, then Windows may be hiding these from you. In order to work with file names accurately, it is best to unhide the extensions. This Microsoft support article has the steps: http://support.microsoft.com/kb/865219.

(A) If mms.cfg exists, drag it to your Documents folder where you can edit it without being bothered about administrator privileges

(B) If mms.cfg does not exist, open your Documents folder, right-click > New > Text File and name the new file mms.cfg

(3) Open mms.cfg from Documents into a text editor such as Notepad.

Add this on its own line (I put it last):

ProtectedMode=0

Save the file and close Notepad.

(4) Hold down the Ctrl key and drag the mms.cfg file back to the Flash folder to make a copy there, keeping the original in Documents

This change will take effect once the Flash plugin is completely unloaded, which may require exiting and restarting Firefox (allow a few minutes for all the Flash processes in memory to terminate after exiting Firefox).

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Question owner

I disabled Protected Mode, and Flash doesn't crash anymore on FF and I can use it normally. Embeds will work on FF with hardware accel enabled or disabled. They will work on Waterfox only with hardware accel disabled. Since disabling it slows down some elements on a website I use, I have reverted back to Firefox. Is there any issue in leaving Protected Mode forever disabled?

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jscher2000
  • Top 10 Contributor
2357 solutions 20872 answers

Hi Kelvets, my understanding of the benefit of the Protected Mode feature is that it isolates different Flash processes from one another which reduces the potential for a successful attack between Flash media from two different sites. Since most uses of Flash are noncritical (e.g., movies and games), I don't think this is important in day-to-day browsing. However, if you are using a Flash-based application to make purchases or submit confidential information, then you might want to close down other tabs using Flash until that is completed.

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