A .prin file is Premiere's internal project backup, not a video file you can open or share

When you work in Adobe Premiere Pro, the program automatically creates files with a .prin extension inside your project folder. These are not video files, image files, or anything you can play back. They are temporary snapshots of your project at specific moments — Premiere's way of keeping a safety copy in case something goes wrong while you are editing.

The .prin file sits alongside your main project file (which ends in .prproj) and serves one purpose: recovery. If Premiere crashes, loses power, or closes unexpectedly, the .prin file lets you pick up closer to where you left off instead of losing hours of work. You do not create these files yourself — Premiere does it automatically.

Key Takeaways

  • A .prin file is Premiere's automatic backup of your project state, created while you work, and not meant to be opened or edited by you.
  • Premiere stores .prin files in a hidden folder called Adobe Premiere Pro Auto-Save inside your project directory.
  • You can safely delete .prin files once your project is finished and saved, as they take up disk space and are no longer needed.
  • If Premiere crashes, the program will offer to recover your project using the most recent .prin file when you reopen it.
  • Do not try to rename a .prin file to .prproj or open it in another program — it will not work and may corrupt your actual project.

Where Premiere stores .prin files and why they are hidden

Premiere does not put .prin files in the same folder as your main project file where you can see them. Instead, it creates a subfolder called Adobe Premiere Pro Auto-Save (on Windows) or Adobe Premiere Pro Auto-Save (on Mac) inside your project directory. This folder is often hidden by default, which is why you might not notice these files exist unless you specifically look for them.

The reason for hiding them is practical: they are not meant for you to touch. Premiere manages them on its own schedule, creating new snapshots as you work and deleting old ones to save space. If you accidentally delete or move a .prin file, Premiere cannot use it for recovery. Keeping them out of sight reduces the chance of accidental interference.

To see these hidden files on Windows, open File Explorer, go to View, and check "Hidden items". On Mac, press Command + Shift + Period in Finder to toggle hidden files on and off. Once you can see the Auto-Save folder, you will find multiple .prin files inside, each labeled with a timestamp showing when Premiere created it.

How Premiere uses .prin files during a crash or unexpected close

When Premiere closes unexpectedly — whether from a crash, a power failure, or a forced shutdown — the next time you open the program, it checks for recent .prin files. If it finds them, Premiere displays a recovery dialog asking whether you want to restore your project from the backup.

You can choose to recover the project (which loads the most recent .prin snapshot) or open your last manually saved version instead. The recovery option usually gets you much closer to where you were working than the last time you hit Save, because Premiere has been creating .prin snapshots continuously in the background.

This is why the .prin file exists at all: it is Premiere's insurance policy. Without it, every unexpected close would mean losing all the work since your last manual save — potentially hours of editing, color grading, or effects work.

Why .prin files take up disk space and when to delete them

Each .prin file is a complete snapshot of your project, so they can be surprisingly large — sometimes hundreds of megabytes for a complex project with many clips and effects. Premiere keeps multiple versions (usually the last several snapshots) so you have options if you need to recover to an earlier state. Over time, especially on long projects, these files add up.

Once your project is finished and you have saved it as a final .prproj file, the .prin files serve no purpose. You can safely delete the entire Adobe Premiere Pro Auto-Save folder without affecting your actual project. Deleting them frees up disk space and keeps your project directory clean.

If you are working on a project that is still in progress, keep the Auto-Save folder intact. Only delete it after you have finished editing, exported your final video, and confirmed that your main project file (.prproj) opens and plays correctly.

What happens if you try to open or rename a .prin file

A .prin file is not a video file, image file, or anything that standard media players or image editors can read. If you try to open one in VLC, QuickTime, Photoshop, or any other program, it will either fail to open or display garbage data. The file format is proprietary to Premiere and contains project metadata, timeline information, and references to your media files — not the actual video or audio.

Do not rename a .prin file to .prproj and try to open it as a project. Premiere will not recognize it as a valid project file, and you may corrupt the data in the process. The only safe way to use a .prin file is to let Premiere handle it automatically during recovery.

If you need to recover a project and Premiere does not offer the recovery dialog automatically, you can manually browse to the Adobe Premiere Pro Auto-Save folder, find the most recent .prin file, and contact Adobe Support with the file path. They can advise whether recovery is possible, but in most cases, the automatic recovery process is the only reliable method.

The difference between .prin files and your actual project file

Your actual project file is the .prproj file — the one you create when you start a new project and the one you manually save throughout your work. This is the file you open when you want to continue editing. It contains all your timeline decisions, effects settings, color corrections, and references to your media files.

The .prin file is a temporary backup of that .prproj file, created automatically by Premiere at regular intervals. Think of it as a snapshot taken while you work, not the original document. You should never need to interact with it directly. Your workflow should always be: work in Premiere, hit Save (or let Premiere auto-save), and open the .prproj file next time you want to continue.

If something goes wrong and Premiere offers recovery, you are choosing between recovering from a recent .prin snapshot or opening your last manually saved .prproj. In most cases, the .prin recovery is the better choice because it is more recent, but the .prproj file is always your permanent record of the project.

How to prevent .prin file buildup and manage your project folder

Premiere creates .prin files automatically, and you cannot turn this feature off — nor should you want to, because it is your safety net. However, you can manage the Auto-Save folder to prevent it from consuming too much disk space.

The simplest approach is to delete the Adobe Premiere Pro Auto-Save folder once a project is complete. Since the .prin files are only useful during active work on that project, removing them after you have finished editing and exported your final video is safe and frees up space.

If you work on many projects simultaneously or on a computer with limited storage, check your Auto-Save folders periodically and delete the ones for finished projects. You can also adjust Premiere's auto-save frequency in Preferences (Edit > Preferences > Auto-Save on Windows, or Premiere Pro > Preferences > Auto-Save on Mac), though the default settings are usually reasonable.

Frequently Asked Questions

Can I move or copy a .prin file to another computer?

Moving a .prin file alone will not help you recover a project on another computer. The .prin file contains references to your media files, effects, and other project elements, but not the actual media itself. To move a project to another computer, use Premiere's File > Project Manager to collect all media and create a portable version of your actual .prproj file.

What if the Adobe Premiere Pro Auto-Save folder is missing?

If the folder does not exist, Premiere will create it the next time you open a project. This is normal. If you deleted it intentionally, Premiere straightforward starts fresh with new auto-saves. If it disappeared unexpectedly, check that your project folder has write permissions and that your hard drive has available space — Premiere needs both to create and maintain the Auto-Save folder.

Will deleting .prin files affect my saved project?

No. Deleting .prin files does not touch your actual .prproj project file. As long as your main project file is saved and intact, you can delete the entire Auto-Save folder without any risk to your work. The .prin files are backups only, not part of the project itself.

Why does Premiere keep multiple .prin files instead of just one?

Premiere keeps several snapshots so you have options if you need to recover to an earlier point in your work session. If the most recent snapshot is corrupted or does not contain the state you want, you can recover from an older one instead. This redundancy increases the chances that recovery will work when you need it.

Can I use a .prin file to undo changes I made to my project?

Not directly. The .prin files are for emergency recovery only, not for version control or undo. If you want to revert to an earlier version of your project, use Premiere's Edit > Undo feature while the project is open, or manually save multiple versions of your .prproj file with different names (like "Project_v1.prproj", "Project_v2.prproj") so you can open the one you want.