What is a .QTPXCOMPOSITION file?
A .QTPXCOMPOSITION file is a special kind of file that is made by QuickTime, which is a program for watching videos that comes with macOS, the operating system for Mac computers. This file is like a box that holds parts of a video or audio recording that hasn't been saved yet. Inside this box, there might be video clips (.MOV files) or sound recordings (.M4A files).
The main job of a .QTPXCOMPOSITION file is to keep your recording safe while you're still making it. QuickTime automatically saves your work in progress into this file. Think of it as QuickTime's way of making sure you don't lose your recording if something unexpected happens, like if the program stops working all of a sudden.
You can open this type of file with Apple QuickTime Player, which is a program that comes with your Mac computer. So, if you're in the middle of recording something and haven't saved it yet, and QuickTime closes by mistake, you can find this .QTPXCOMPOSITION file and open it to get back to where you left off.
If you ever need to find a .QTPXCOMPOSITION file, it's kept in a specific place on your Mac. You can go to the folder path /Users/[your username]/Library/Containers/com.apple.QuickTimePlayerX/Data/Library/Autosave Information/ to find it. Remember, this file is really just a temporary holding spot. Once you save your recording the way you want it, you won't need the .QTPXCOMPOSITION file anymore.
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