File Extension AEPX

  • Full name
    Adobe After Effects XML Project Format
  • Developer
    Adobe Systems
  • Popularity
Have you encountered a problem with a AEPX file? Don’t you know which program opens a file with this extension? You will find all the information you need about working with a AEPX file here. In the further part of this page we have added a list of programs that should open your AEPX file. It is enough you choose a proper application for your operating system, download and install it.


The AEPX file extension is used by the Adobe After Effects video compositing and animation software for XML-based project files. In addition to references to videos, audio files and images, AEPX files also contain cut and timeline information and effects settings.

Usually, the paths to the media files are also saved, so that they are only found if they are in the original directory. But you can also load AEPX files and specify new locations for missing files.

AEPX files contain almost exclusively readable information, so that, for example, changed paths or media names can be easily adapted via text editor. Aepx project files are designed primarily for automated (via script) modification of project settings.

Adobe expressly points out that AEPX should not be used primarily for projects. Therefore, AEPX files can only be saved under 'File -> Save as XML'. In addition, AEPX files can be quite large and are then processed slower.

The AEPX format is supported since version CS4.

Programs which can open a AEPX file

How to open a AEPX file? Advice and guidance

Absolutely most often appearing reason that prevents you from opening the AEPX file is the lack of a proper application to support it in your operating system. It is notably the first thing you need to address. When one of the programs to support a AEPX file from the list is already installed, you can try to rerun the file. The system should display a message asking you to choose a primary application to support AEPX files. At this point we are looking for disk space where the application was installed in and we can link it with a AEPX file. Since then, our operating system will use the selected program to support all AEPX files.

Other issues

Despite the described problem with AEPX there may be many more problems. If the existing operations were not effective, get involved with the following matters:

- verify that the AEPX file is not damaged and that it has been downloaded or copied in whole
- verify that the file has a file extension that has not been intentionally changed (for example, if it do not contain other information than its extension suggests)
- make sure again whether the AEPX file type is linked in the operating system with a proper program
- make sure that the file is not infected with a virus and you have up to date software and drivers.

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