.QTL File Type
File extension: QTL or .qtl
Author of the .qtl file extension: Apple Computer, Inc.
Category: Miscellaneous files
Programs that use the .qtl file type: Apple QuickTime
Explanation of .qtl file extensions:
The .qtl file extension stores information about media content that will be played along with recommended dimensions, control features, accessibility features, control features, and so on.
Typical problems associated with the .qtl file extension:
One of the most common problems with .qtl files is that they are vulnerable to exploitation by malware. These files can be set up to deliver malicious programs to users on both Windows computers as well as Macintosh computers.
Solutions/Recommendations:
Patch your QuickTime player with the recommended patches from Apple. Though a bit slow in responding to the malware threat, Apple has released a patch that fixes this vulnerability. http://www.apple.com/support/downloads/
In addition, it never hurts to keep your computer protected with anti-spyware and anti-virus software as well as keeping your operating system up to date with the latest security patches.
If you suspect malware has gotten into your system, after running the anti-spyware, you should also run a registry cleaner. Malware can get into your registry and make changes that can dramatically affect your system. In addition, cleaning out the registry will clean up remnants left behind from failed installations, unexpected shutdowns, and overall clutter.
Associated links:
Launching QuickTime with a Text Link - http://developer.apple.com/documentation/QuickTime/QT4WebPage/samplechap/special-11.html
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