Neither Quick Time works!!

Help.
I seem to have two Quick Times on my computer -- the old trusted one (I believe it's QuickTime 7 with the nice light-blue Q) and the other one is new (I believe it's Quick Time 10 with a silver Q and a slightly different colored blue on the inside of the Q). And neither seem to work.
My problem is this: I want to watch a video on the internet (coincidentally, a help-video on the apple.com homepage about MobileMe galleries) and a box pops up with a light blue Q and a question mark. No matter what I do, it won't play.
I have a MacBook Pro that is six months old with two QuickTimes, can someone please explain WHY I can't open a quicktime video
(additional info: I've had an apple since 1989 -- I am not a computer whizz, but nor am I a new user...).

a box pops up with a light blue Q and a question mark.
It is telling you there is a problem that requires your direct attention. Basically it wants you to determine the specific problem and fix it since the problem has fallen through all internal error trapping which locating the problem.
WHY I can't open a quicktime video
You can start by determining which codecs are involved and then go from there.

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Hi robertfromsalt spring island,
Happy Holidays!
The resource below will explain how to uninstall and re-install Quicktime for Windows if you are having issues with the software.
iTunes 10.5 or later for Windows: Older media files may require QuickTime - Apple Support
http://support.apple.com/en-is/HT203459
With iTunes 10.5 or later, QuickTime isn't included when you install iTunes. Although media content purchased or rented from the iTunes Store doesn't need QuickTime to play, you may have older media files that require QuickTime.
Install QuickTime
If you already have QuickTime installed, you may have to uninstall and reinstall QuickTime.
Download QuickTime.
Double-click the downloaded file.
Follow the directions in the QuickTime Installer to complete the installation.
Uninstall QuickTime on Windows Vista, Windows 7, and Windows 8
Quit QuickTime if it's open.
From the Start menu, click Control Panel.
In Control Panel, click "Uninstall a program." The Programs and Features Control Panel will open.
If you don't see the "Uninstall a program" link, click Programs and Features.
Select QuickTime from the list of currently installed programs and click Uninstall.
When asked if you would like to remove QuickTime, click Yes.
Restart your computer.
I hope this information helps ....
- Judy

Quick time works for one user but not for another

I transferred my user info from my old computer to my son's newer computer. My old computer was running 10.3x and quicktime wasn't working. The genius bar folks couldn't figure out how to fix it. (All quicktime files come up with the logo with question mark.)
New computer (newer) is running 10.4. Stuff all transferred fine. Problem transferred too.
Old user signs in, quicktime works fine. I sign in, quicktime broken.
How do I figure this out?

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I am directed The document “Video.MOV” could not be opened. The movie's file format isn't recognized
QuickTime Movie (.mov)
MPEG-4 (.mp4, .m4v)
MPEG-2 (OS X Lion or later)
MPEG-1
3GPP
3GPP2
AVCHD (OS X Mountain Lion only)
AVI
DV
MPEG-2 (OS X Lion or later)
MPEG-4 (Part 2)
H.264
H.263
H.261
Apple ProRes
Apple Pixlet
Animation
Cinepak
Component Video
DV
DVC Pro 50
Graphics
Motion JPEG
Photo JPEG
Sorenson Video 2
Sorenson Video 3
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It could be you're not adding the files the right way. In more seldom cases:
[Topic : MP3 Scan+Repair - an ID3 tag evaluator for the Mac|http://discussions.apple.com/thread.jspa?threadID=2020936]
MP3 Scan+Repair (including sources): [http://triq.net/mac/mp3-validator-mac-os-x]

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BUT
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!http://i50.tinypic.com/xbed8p.png!
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!http://i47.tinypic.com/1685qpc.png!
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Safari>Help>Installed Plugins.
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From QTK
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Just bought an iPod (Classic Video 160GB) and tried to install iTunes 7.5 (incl. QuickTime 7.3).
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-Cleaning my Registry with Abexo Free Registry Cleaner
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As I have tried to find a solution to my problems all day now and am not able to find any answers, I hope someone here will point me in the right direction..!! Thank you very much in advance!

OK you need to uninstall AVI and Ace Mega codec pack and you have already uninstalled Quicktime alternative.
Once you ahve uninstalled the codec packs
Download the stand alone Quicktime:
http://www.apple.com/quicktime/download/win.html
Now Remove Quicktime using the method here (just Quicktime):
http://docs.info.apple.com/article.html?artnum=93698
Or for Vista
http://docs.info.apple.com/article.html?artnum=305409
When you come to your C:\Windows\system32\ folder you can delete any file or folder with Quicktime in the name.
Restart you computer
Install the stand alone Quicktime and check if it starts.
If it does you are in a position to find out if iTunes is OK.

How do I get Quick Time to work on my computer again?

Apparently I am old and a dummy and it seems I accidentally uninstalled Quick Time from my computer instead of uninstalling something else that I was intending to uninstall. How can I get Quick Time back? I've tried the download from the apple.com site, but it never shows up in a file other than some binary file and I don't have the option to "run" after download, just save to this binary file. PLEASE can someone help me? THANKS in advance for any and all help.

Hi 1 olddummy,
Welcome to the Support Communities! First of all, you are not old or a dummy. I'm sure you can give me hundreds of examples of things you can do because of your knowledge and experience, so give yourself a break . I just want to clarify .... are you using a Windows computer or a Mac? I'm going to assume Windows and include an article for you that will explain how to delete the iTunes application and all of it's components (because Quicktime is tied to this program). This will not affect your iTunes library, only the application itself. Once that is done, you should be able to work with Quicktime again.
Removing and reinstalling iTunes and other software components for Windows Vista, Windows 7, or Windows 8
http://support.apple.com/kb/ht1923
Cheers,
- Judy

HT204382 mpeg video file won't open in quick time player on my macbook running snow leopard. Works fine in iMac running mountain lion. Any ideas

mpeg video file won't open in quick time player on my macbook running snow leopard.
works fine on iMac running mountain lion.
any ideas?

HI,
If iChat is Open and your think Accounts/Screen Names are logged in then go to the Window Menu
This should list the accounts that are logged in with various keystrokes ( Apple/CMD ( or ⌘) and a Number) shown next to them.
Using these should get the Buddy list "back".
It is possible to Hide the Buddy list and then Quit iChat.
iChat will then "remember" where the windows were eve if this was Hidden.
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It is possible the text chat Window is also Hidden on double clicking a Buddy.
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8:49 PM Monday; February 27, 2012
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 iMac 2.5Ghz 5i 2011 (Lion 10.7.3)
 G4/1GhzDual MDD (Leopard 10.5.8)
 MacBookPro 2Gb (Snow Leopard 10.6.8)
 Mac OS X (10.6.8),
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How do I uninstall firefox 4 and use the previous version. I do lots of work related tasks that require quick time to work and it doesn't with ff4.o.

Quick time crashes and I have lost almost all sounds/video sound capability with the new ff4.0. I want to remove it and replace it with the previous version until the bugs are fixed.

Maybe wait another day because Firefox 5.0 will be released on June 21 and maybe that version works better.
* Firefox 3.6.x: http://www.mozilla.com/en-US/firefox/all-older.html
* Firefox 4.0.x: http://www.mozilla.com/en-US/firefox/all.html
Make sure that you allow the plugin-container process in the firewall and other security software.
See also:
* [[No sound in Firefox]]
* [[Video or audio does not play]]
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You can adjust the volume level for each application in that window, so make sure that Firefox is not muted or set at a low level.<br />
You will only see the Firefox program in the Mixer if you are on a website that plays sound.<br />
Also check the volume setting for the plugin-container process.<br />

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When I purchased a new camera, unlike my old camera that saved files as .avi and which allowed me to use the files with all software and which allowed me to view automatically the thumbnails for the .avi file, my new camera used the garbage .mov from apple. Result: i can't see what the files contains... NO thumbnails in windows! I was told to buy QUick time Pro to be apple to do this. I did what the quicktime "help" (misnomer) said to do: set poster frame, resave the file (try to save it as is, or as quick time mover). THIS DIDN'T WORKED. There was Ø supplementary information. The only thing that works is MANUALLY converting all my .mov from the camera to .avi using quicktime pro. I paid CAD$39 FOR absolutely NOTHING. Any suggestions?
<Edited by Moderator>

Please review the "stickied" threads near the top of this board, about syncing with Windows 7 and Vista. It's all there.
After you've been through and tried everything there is to try, and still have problems, please post back with specific info about exactly what you've tried, what version of Windows 7 you have (32-bit or 64-bit), etc.
smkranz
I am a volunteer, and not an HP employee.
Palm OS ∙ webOS ∙ Android

Neither Quick Time works!!

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