You've opened iMovie to make one quick cleanup, only to find a Projects browser full of abandoned edits and a storage warning that refuses to disappear. You delete the project, wait for the free space to change, and then wonder whether iMovie removed anything.
The confusing part is that deleting an edit and deleting its media aren't always the same action. On Mac, iMovie can place the project's media in a same-named event inside the currently open library, so the project disappears while the clips remain. On iPhone and iPad, deleting a project also won't remove clips that originated in the Photos library. This guide shows you how to remove the project, identify leftover media, and reclaim storage without accidentally deleting footage you still need.
Table of Contents
- Why Deleting an iMovie Project Feels Harder Than It Should
- Deleting an iMovie Project on Mac
- Deleting an iMovie Project on iPhone and iPad
- Cleaning Up the Leftover Event and Media Files
- Fixing Storage That Did Not Free Up
- Quick Checklist Before and After You Delete
Why Deleting an iMovie Project Feels Harder Than It Should
The answer to “how do I delete a project in iMovie” depends on what you mean by delete. You may want the project tile gone from the Projects browser, the imported clips removed from the iMovie library, or the original videos deleted from your device. Those are separate outcomes, and iMovie doesn't always make the relationship obvious.
On Mac, Apple's guidance uses the Projects browser and a confirmation step. On iPad, you open the Projects browser, select the project, choose Delete, and confirm whether you want to delete the project or trailer. Apple also explains that deleting a project doesn't remove photos or video clips recorded in iMovie from the Photos library. You can review Apple's official iMovie project guidance for iPad before starting.

Think of the cleanup as three checks:
- Remove the project entry: The unwanted edit should no longer appear in Projects.
- Handle the media container: On Mac, check whether a same-named event still contains the imported clips.
- Confirm storage recovery: Check the system's storage view only after trash, events, and original media have been considered.
Practical rule: If the project vanishes but storage barely changes, don't delete the project again. Look for the media that remains behind.
The iMovie library system has evolved over the app's long history. Apple introduced iMovie with iMac DV in 1999, and iMovie 10.0 arrived in 2013, milestones documented in this iMovie history reference. That background helps explain why older Mac libraries and newer libraries can behave differently.
If you also edit on other devices, compare iMovie with these video editing programs for Chromebook. For now, start with the device where the project lives, then use the media checks later in this guide if the storage warning remains.
Deleting an iMovie Project on Mac
On a Mac, begin in the Projects browser, where iMovie displays your saved edits. If you're currently inside a project, use the Projects view button, or open the Window menu and choose Go to Projects.

The Mac deletion path
- Select the project tile you no longer want.
- Open the File menu and choose Move Project to Trash. Depending on your iMovie version and interface, you can also right-click the project and choose Delete Project.
- Read the confirmation dialog carefully. Apple's Mac guidance states that if the project contains media, iMovie can create a same-named event in the currently open library and place the project media there.
- Click the confirmation button to commit the deletion.
The project should now disappear from the Projects browser. That confirms the edit itself is gone, but it doesn't prove that every associated clip has left the library. Open the Events browser afterward and look for an event with the same name.
You can select several projects at once by holding Option while clicking additional project tiles, then use the delete command. Batch deletion is convenient, but use it only after checking that you won't need the edits or their source material.
Storage warning: The project bundle and its media are managed inside the iMovie library, so deleting a project may not produce the storage result you expect until the related event and trash are handled.
For users who want to verify the library manually, the usual Mac location is ~/Movies/iMovie Library.imovielibrary. In Finder, the library appears as a package. You can inspect its contents with care, but avoid manually removing files from inside the package while iMovie is open. The safer route is to use iMovie's own Projects and Events browsers.
This Mac support guidance from Apple describes the project deletion behavior and the event-related storage pitfall.
The following demonstration shows the Mac project-management workflow:
Deleting an iMovie Project on iPhone and iPad
On iPhone or iPad, iMovie normally opens to the Projects view, which displays your edits as tiles. Find the project you want to remove, but pause before tapping the thumbnail itself. The control you need is the three-dot menu attached to the project tile.

The iPhone and iPad tap sequence
- Open iMovie and stay in the Projects view.
- Find the project tile you want to remove.
- Tap the ellipsis button, shown as three dots near the lower corner of the thumbnail.
- Choose Delete Project from the action sheet.
- Read the confirmation alert and select the deletion option that matches your goal.
If you want to remove only the edit while keeping the source material available within iMovie's media area, choose the project-only option. If you want iMovie to remove both the edit and its associated media stored inside the app, choose Delete Project and Media when that option appears.
Movie trailers use a slightly different label. If the tile is a trailer rather than a standard movie project, the action sheet can show Delete Trailer instead of Delete Project. Select that command, then confirm the deletion.
The most important mobile distinction is between iMovie's project and the Photos library. Apple says that deleting a project doesn't remove photos or video clips recorded in iMovie from Photos. If you imported a clip from Photos, the original remains there after the iMovie project is gone.
That means deleting the iMovie project may clean up the edit without creating the storage result you expected. To remove the original from the device, open Photos and decide whether to delete it or move it somewhere else first. A shared album can help you preserve a copy, but confirm that the copy you need is safely available before removing the original.
After the mobile deletion, check the iMovie Projects view to confirm that the tile is gone. If storage still looks unchanged, use the device storage screen and inspect Photos as well as iMovie. The Mac event behavior described earlier doesn't require the same cleanup path on iPhone and iPad, but the original clips still need separate attention.
Cleaning Up the Leftover Event and Media Files
On Mac, the project can disappear while a same-named event remains in the library. Apple describes this behavior directly: when a project contains media, iMovie can create a new event with the same name in the currently open library and place the project media there. That event is why a deletion sometimes feels like it did nothing.
Open the Events browser and scan for an event matching the project you just removed. Select it, then press Delete or use the relevant delete command in iMovie. Confirm only after checking that the event doesn't contain clips you want for another project.

Keep selected clips before removing the event
If the event contains useful footage, don't delete the whole container immediately. Double-click the event, review the clips, and move the ones you want to preserve into another event or a separate location. Then return to the original event and remove only what you've confirmed you no longer need.
The Mac storage result also depends on how the media entered the library. On older macOS versions, including Mojave and earlier, iMovie used managed copies for imported media. Removing the event can free space when those copies are the files occupying the library. On Catalina and later, projects can reference files in their original locations, so deleting an event frees space only when the event contains imported copies rather than references to files stored elsewhere.
Apple's earlier Mac documentation also distinguishes project deletion from event and media deletion, including behavior on macOS versions earlier than Catalina. Treat the event as a separate storage decision, not as an automatic extension of the project deletion.
On iPhone and iPad, the iMovie project is stored in the app, while clips imported from Photos remain in the Photos library. You generally won't clean up a same-named Mac-style event on mobile. Instead, inspect Photos if the original footage is what's consuming device space.
For related media workflows, this guide to taking clips from YouTube videos can help you separate source files from the iMovie edit before importing them.
Fixing Storage That Did Not Free Up
Deleting a project doesn't guarantee an immediate storage change. The system may still count the event, the Finder Trash, original Photos clips, or media stored elsewhere. Diagnose the location before removing anything else.
Check the leftover event first
Return to the Events browser and search for the event that matches the deleted project. If it's still present, it may hold the clips that made the library large. Remove the event only after reviewing its contents, as described above.
Empty iMovie or Finder trash
Older Mac workflows may leave managed media in iMovie's own trash area. If your version includes an iMovie Trash, open it and permanently remove files you've already verified. On Mac, deleted items can also remain in the Finder Trash. Quit iMovie, then right-click the Finder Trash and choose Empty Trash.
Quitting iMovie matters because an open library can still have files in use. Emptying the Finder Trash while the app is active can produce confusing results or prevent files from being removed cleanly.
Inspect duplicate or full-quality media
Look in the Movies folder and review the size of the iMovie library and related media. A duplicate library, an exported movie, or full-quality source files stored outside the library can make the deleted project seem responsible for storage that belongs to another copy. Don't delete files by name alone. Open or verify them first.
On iPhone or iPad, open Settings, then the device storage screen, and inspect iMovie and Photos separately. If the clips were imported from the camera roll, deleting the project won't remove those originals. Force-close iMovie, restart it, and check storage again so the system has a chance to recalculate.
Audio projects have similar file-management distinctions. If you work with extracted audio, learn the difference between MP3 and WAV before deleting one format as if it were a duplicate of the other.
Best diagnostic: Find the largest remaining file or library first. Storage tools are more reliable when you identify what still exists instead of repeating the same delete command.
Quick Checklist Before and After You Delete
A safe cleanup starts before you press Delete. Export a final copy of any project you may want later, or share it to a file that you can open independently of the iMovie library. A finished export won't preserve every editable timeline detail, but it gives you a playable safety copy.
Before removing the project, answer these questions:
- Is the final edit backed up? Export or share the important version.
- Where are the originals? Note whether clips live in Photos, a shared folder, or an iMovie-managed library.
- Do you need the source clips later? If yes, keep the event or copy the footage elsewhere.
- Is iMovie current? Update the app before a large cleanup so you're not troubleshooting an outdated deletion workflow.
On Mac, delete the project from Projects, inspect the matching event, and empty the Finder Trash only after quitting iMovie. On iPhone and iPad, use the project tile's ellipsis menu, choose the appropriate delete command, then inspect Photos if you also want the original clips removed.
Afterward, verify the result rather than assuming it:
- Open Projects and confirm the project tile is gone.
- On Mac, check Events for the same-named leftover event.
- On iPhone or iPad, review Photos for the original clips.
- Compare available storage in About This Mac or the iPhone Storage screen.
- Reopen iMovie only after trash cleanup is complete.
One useful action to take right now is to export your most important iMovie project to a file before deleting anything else. That single backup gives you room to clean confidently instead of choosing between a cluttered library and a lost edit.
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