Quicktime doesn't open any video files (app loads, no video)

I've done my best to search for a solution, but I have come up with nothing.
Whenever I try to load any video files (.mov, .mp4, .avi, etc) Quicktime Player 10.1 opens, but no video file is displayed. Same results if I use the "open" command from within Quicktime. All of the videos play fine in VLC.
The only exception to this rule is when viewing a trailer on trailers.apple.com. If I "download" an HD trailer, Quicktime opens and begins to stream the trailer, however the ram runs away (8+gb instantly) and the computer starts chugging very badly.
In the old days I would have just reinstalled quicktime, however with how deeply it is integrated into Lion I am unsure of how to proceed (short of a clean install). Thanks in advance!

markjreynolds1992 wrote:
Is there any way to force an install the latest from nVidia or is this a bad idea?
A previous poster with a Toshiba posted how he installed a generic driver. If I recall it was
Uninstall the graphics driver.
Remove the display driver from Device Manager.
Reboot declining prompts to install a driver.
Run the generic installer program.
I'll see if I can find the original post, I had it in my clipboard manager but that has the unfortunate habit of killing off its database every few months
Cheers,
Neale
Insanity is hereditary, you get it from your children

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Quicktime quits when opening any m4v file

found simular problems, none of the solutions worked.
any ideas?
qt 10.2
os 10.8.4
Model Name:          Mac Pro
Model Identifier:          MacPro5,1
Processor Name:          Quad-Core Intel Xeon
Processor Speed:          2.4 GHz
Number of Processors:          2
Total Number of Cores:          8
L2 Cache (per Core):          256 KB
L3 Cache (per Processor):          12 MB
Memory:          18 GB
Process:         QuickTime Player [1430]
Path:            /Applications/QuickTime Player.app/Contents/MacOS/QuickTime Player
Identifier:      com.apple.QuickTimePlayerX
Version:         10.2 (603.17)
Build Info:      QuickTimePlayerX-603017000000000~5
Code Type:       X86-64 (Native)
Parent Process: launchd [150]
User ID:         501
Date/Time:       2013-08-22 20:12:07.543 -0700
OS Version:      Mac OS X 10.8.4 (12E55)
Report Version: 10
Interval Since Last Report:          62106 sec
Per-App Interval Since Last Report: 2913 sec
Per-App Crashes Since Last Report:   12
Anonymous UUID:                      4B433519-3610-6EE1-E9C0-B48A7C11C516
Crashed Thread: 0 Dispatch queue: com.apple.main-thread
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000000
VM Regions Near 0:
-->
    __TEXT                 0000000106c8d000-0000000106eea000 [ 2420K] r-x/rwx SM=COW /Applications/QuickTime Player.app/Contents/MacOS/QuickTime Player
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   com.apple.CoreFoundation                0x00007fff8caefbb2 CFDictionaryGetValue + 18
1   com.apple.QTKit                         0x00007fff932a

The files I'm most concerned with playing are my animations exported from Final Cut and from another system's quicktime. These usually are quicktimes or .wma's that are either uncompressed or with a variety of compression, usually DV-NTSC, H.264, HDV 1080 60i, or mpeg4 for the web. But as I've professed before, it seem that the file type isn't necessarily factor. Any video file that should play in Quicktime does not and the program crashes. Upon this I get a very vague error message which reads "Quicktime Player has encountered a problem and needs to close. We are sorry for the inconvenience." That unfortunately is as much detail as I can give at the moment. I know this is a vague problem and that my information is just as vague, but that is all I have gathered. Anything is appreciated.

Hello! I used QuickTime for watch any videos on OS X Mountain Lion, but now, I'm passed to OS X Mavericks and QuickTime, when I open an .avi file, convert this in a .mov file. I'm sorry for my English, I'm French and I don't know speak English very well,

Hello! I used QuickTime for watch any videos on OS X Mountain Lion, but now, I'm passed to OS X Mavericks and QuickTime, when I open an .avi file, convert this in a .mov file. I'm sorry for my English, I'm French and I don't know speak English very well, but what can I do for QuickTime opens on .avi and doesn't convert to .mov?

HI GalaxieMusique,
I'm french too, but I'm going to write this post in english so that everyone may understand it
I have the same problem in Mavericks, but I'd say, more important, with QuickLook.
Indeed Quicklook can't read avi movies anymore. Actually it always been the case, but with Perian we were able to fix it. The problem is that Perian is no longer available for Mac OS 10.9....
I'd assume that our only hope is Apple themselves... It would be nice from Apple to creat an add-on for quicklook to be able to preview the avi movies.
In regards with quicktime, you can download QuickTime 7 here:
http://www.01net.com/telecharger/windows/Multimedia/lecteurs_video_dvd/fiches/10 0.html
and ask all the .avi movies to be played by QuickTime 7 and not QuickTime X (included into Mac OS).
Sorry for the english, we french people can make mistakes sometimes
If anyone has a solution for QuickLook, please do not hesitate. This topic is becoming a real mess....

I'm running snow leopard. The try to open any .mov file in Quicktime, and I get an error message that says, "The document xyz.mov could not be opened. The movie is not in a format that Quicktime player understands. I'm a recent upgrade to Snow Leopard.

I'm running snow leopard. The try to open any .mov file in Quicktime, and I get an error message that says, "The document xyz.mov could not be opened. The movie is not in a format that Quicktime player understands. I'm a recent upgrade to Snow Leopard.
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Thanks, Mark

Unfortunately, the error message gives no details about what codec might be missing or what it needs.
If the file can't be opened in QT, it only means you cannot use the QT "Inspector" window to check what compression formats were used to create the file. It does not mean you can't use the Finder "Information" window to check on the compression formats or use a third party media information window (e.g., like VLC which will open many compression formats not supported natively by QT) to determine what kind of data is included in the MOV wrapper. If the file cannot be opened in any app, it is usually a good sign that the file itself is corrupted.
It's a stupid error message. Apple should do better than that.
Error trapping is quite extensive but there are still many areas which require human oversight. The message is telling you that either the container has a problem (e.g., not properly terminated, non-standard, or corrupted) or that one or more of the compression formats used is not supported by your current codec component configuration or that the data was encoded using non-standard settings or preferences not supported by QT or that the fourCC code does not match the data contained in the file or that there are timecode inconsistencies, etc., etc., etc. In short there are a near infinite number of possible problems for which it would be very difficult/nearly impossible to program error trapping depending on your sourcing of content and how you process it before it reaches the player app. Think of it like trying to play a BD disc in an DVD player.
I'll call Apple support when I get a chance.
Chances are good that they will end up sending you back here. In any case, it is often a good idea to post a sample file for examination by other QT users. At the very least, they should be able to tell you if the sample file will play on other systems which would indicate whether or not the file itself is bad and under the best of circumstances whould allow them to examing the file in detail for various common problems.

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See if you are able to download DDS and save it to your desktop.
Disable any script blocking protection
Double click dds.scr to run the tool.
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ThinkPad: T530 / X1 Gen 2 / Helix - Yoga: Tablet 2 Pro (Win) / Yoga 3 Pro
If you find a post helpful and it answers your question, please click the "Accept As Solution" button.
Lenovo Advocate ~ I am not employed by Lenovo or Microsoft. I am a volunteer.
Microsoft MVP - Consumer Security
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Hi Neale,
Thank you for being there again...
I worked through your list:
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Run Disk Cleanup. (I did so)
Run Defragmenter. (I did so)
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Laurens Swarte
the Netherlands

Quicktime doesn't open any video files (app loads, no video)

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