File Extension Library


  • Developer by: Apple
  • Category: Data Files

What are .QTPXCOMPOSITION files and how to open them?

Can't open .QTPXCOMPOSITION file? Are you wondering what it contains? On our site we will explain to you what this file is, what it is used for and what software opens the .QTPXCOMPOSITION file.

What is a .QTPXCOMPOSITION file extension?

.QTPXCOMPOSITION file extension is created by Apple. .QTPXCOMPOSITION has been classified as Data Files.

.QTPXCOMPOSITION is QuickTime Composition File

A QTPXCOMPOSITION file is an archive created by QuickTime, a video playback program bundled with macOS. It contains files that make up an unsaved recording created in QuickTime, which may include .MOV files for video recordings or .M4A files for audio recordings.

The QTPXCOMPOSITION file is only used for unsaved compositions created in QuickTime. As you are making a recording, whether it be video or just audio, the information is autosaved by QuickTime in the QTPXCOMPOSITION file. The file is meant to be temporary until you save the recording in a specific format.

If you lose a recording that has not yet been saved, you can use the QTPXCOMPOSITION file to retrieve the lost recording from the point at which it was last autosaved. This proves especially helpful in instances where QuickTime crashes before a recording can be saved.

QTPXCOMPOSITION files are located in the following location:/Users/[username]/Library/Containers/ Information/


Unsaved QuickTime Player Document.qtpxcomposition - The default name given to QTPXCOMPOSITION files that have not yet been named by the user. This is the typical name seen by users looking for a lost recording.

List of all softwares that can open the QuickTime Composition File
Apple QuickTime Player

How to fix problems with .QTPXCOMPOSITION files

  1. You need to update the application that you normally use to open .QTPXCOMPOSITION files. Only the latest version of the software supports the current .QTPXCOMPOSITION file format
  2. You need to check the .QTPXCOMPOSITION file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.)