QT File Extension
Apple QuickTime Movie
- File Type qt
- Developer Apple
- Popularity
- Application QuickTime Alternative
- Category Video Files
- Format Binary
What is a QT file?
The QT file extension is linked to Apple QuickTime Movie and belongs to the Video Files category, which includes 445 files.
With the creation of the Apple QuickTime Movie (QT), Apple introduced file format along with 72 programs built for their use.
QT files are compatible with various operating systems, including Mac OS, Windows and Linux. You can play a QT file using one of 12 programs, for example QuickTime, QuickTime Alternative and ALLPlayer.
MIME types
- video/flc
- video/quicktime
- audio/aiff
- audio/x-wav
Programs that support QT files
How to open a QT file?
The most common reason why a QT file cannot be opened is the absence of required software. To fix this, select a compatible program from the list. Then visit the official developer website via the provided link, download the program, and install it on your system.
QuickTime, QuickTime Alternative and ALLPlayer are recognized as the most popular software solutions for dealing with QT files. If you wish to install the latest release of QuickTime Alternative, visit the official portal and download the edition that works on any operating system.
After setup, the operating system should recognize QT files and link them with QuickTime Alternative.
Set QuickTime Alternative as your default QT viewer
Setting a default program by file type in Windows
- Start by right-clicking on your QT file and selecting the "Open With" option. From there, click "Choose another app" to continue;
- From the list of applications in the pop-up window, find and select QuickTime Alternative as your desired application;
- Check the "Always use this app" checkbox, and then click "OK" to set your chosen app as the default for opening QT files.
Set default app to open files on Mac
- Right-click or Control + left-click on the desired QT file to open a menu of available actions;
- Select "Open in application" and click "Other";
- Scroll down to the bottom of the window, and there you will find the "Enable" menu. The default selection is "Recommended Programs";
- Choose "All Programs" within this menu and locate QuickTime Alternative. Check the box next to "Always open in app" to set it as the default program.
Convert to and from QT
If a QT file is cumbersome, converting it to formats such as AAC, 3GP, AMV, 3GPP2 or other supported types can make it easier to manage.
Converting a QT file may not fully retain all functionality, but it is generally possible to return it to the original format.
Offline conversion tools, like SUPER 3D Video Converter, AMV Video Convert Tool and Movavi Video Converter Personal, provide reliable and high-quality conversion of QT files.
Convert QT to other file formats
Solving Common QT File Challenges
QT files can sometimes be tricky, but minor software adjustments usually resolve the issues. Refer to the tips below for guidance.
What are the possible solutions to recover a corrupt QT file?
Use a recovery program to open the damaged QT file and navigate to the "Repair" menu item. Please be patient while the recovery process completes, which will automatically restore the damaged video files.
What are the signs that my QT file is damaged?
Corrupted QT video files may show the following signs:
- The file causes QuickTime Alternative or other programs to hang or crash during operation;
- Attempts to open the file result in errors or failed results;
- Unexplained increase in QT file size;
- Working with the file triggers the display of error messages;
What are the possible causes of QuickTime Alternative crashing?
QuickTime Alternative crashes can be attributed to outdated software. Make sure you have installed the latest updates for developer products.
A simple restart of your computer can often fix many common problems, which is why it is the recommended first step before making any adjustments to your software settings.