What is .QTP file extension?
Preferences file created by QuickTime, a video playback program; contains preferences such as connection speed, software update options, taskbar icon display, and file association notifications; used to remember and automatically apply user preferences within QuickTime.
QTP files only apply to the Windows version of QuickTime. They are stored with the name QuickTime.qtp and are typically located in the AppData\Apple Computer\QuickTime user directory.
You can see a list of software programs here on easyfileopener.org that can open this file type so that you don’t need to search for it on the web. You can then open your file with this extension using a software listed below.