If you’ve seen the “Alight Motion export failed” message, you know how frustrating it is to finish a project only to have the export fail when you try to save your video. The good news: most export failures have straightforward fixes. This guide walks you through the most common causes and solutions, starting with the quickest checks. It’s part of our Alight Motion troubleshooting hub, where you’ll find fixes for other common problems too.
Quick Fixes to Try First
Before diving into detailed troubleshooting, try these quick steps. They resolve the majority of export failures:
- Restart Alight Motion completely — close it from your recent apps, then reopen it and try exporting again.
- Check your free storage. Alight Motion needs room for the final file plus temporary working files created during rendering. If your device is nearly full, delete unused apps, photos, or videos and retry.
- Lower the export resolution or frame rate in the export settings, then try again. A 720p export that succeeds is better than a 4K export that fails.
- Close other apps running in the background to free up memory for the render.
Common Causes of Export Failures
Not Enough Storage Space
Video exports need free space — often much more than the final file size, because the app creates temporary files while rendering. If your device storage is almost full, exports will fail partway through. Free up space and try again.
Your Project Is Too Complex for the Device
Projects with many layers, high-resolution images, heavy effects, or long timelines demand significant memory and processing power. Older or budget devices may struggle with complex timelines. Try simplifying: reduce the number of layers, use lower-resolution source images, or split a long project into shorter segments and export them separately.
A Problematic Media File
A single corrupted image, video clip, or audio file can break the entire export. If the export always fails at the same percentage, look at which part of the timeline that corresponds to — the media at that point is the likely culprit. Try removing or replacing recently added files one by one until the export succeeds.
Too Many Heavy Effects
Stacking multiple demanding effects — such as blurs, distortions, or particle effects — on a single layer can overwhelm the renderer. Try temporarily disabling effects to identify the problematic one, then re-enable them one at a time.
Missing Storage Permission
Alight Motion needs storage permission to save exported videos. If permission was denied during installation, exports will fail. On Android, go to Settings > Apps > Alight Motion > Permissions and allow storage access. On iPhone, check Settings > Alight Motion.
Outdated App Version
Bugs that cause export failures are often fixed in app updates. Make sure you’re running the latest version of Alight Motion from the Google Play Store or Apple App Store.
Advanced Troubleshooting
Back Up Your Projects First
Important: Before trying the steps below, back up any projects you care about. In Alight Motion, you can export a project as a package (XML) to preserve it. If anything goes wrong during troubleshooting, you won’t lose your work.
Clear the App Cache (Not Data)
Corrupted temporary files can cause persistent export failures. On Android, go to Settings > Apps > Alight Motion > Storage and tap “Clear Cache.” This removes temporary files without touching your projects. Do not tap “Clear Data” — that will delete all your projects.
Try a Different Export Setting
If MP4 export keeps failing, try exporting as a GIF (for short clips) or as a project package to at least preserve your work. You can also try reducing the bitrate or choosing a lower resolution in the export settings.
Reinstall as a Last Resort
If nothing else works, reinstalling Alight Motion can resolve deep-seated issues. Warning: Uninstalling will delete all projects stored on your device. Back up everything as project packages first. After reinstalling, import your backups and try exporting again.
Is It the Project or the App?
To narrow down the problem, try exporting a different, simple project. If a simple project exports fine, the issue is specific to your complex project — likely too many layers, a problematic media file, or corrupted project data. Focus on simplifying that project. If every project fails to export, the problem is with the app, device, or storage — work through the app-level fixes above. For persistent failures that survive reinstallation, contact Alight Motion’s official support with your device model and app version.
Preventing Future Export Failures
- Keep at least 1–2 GB of free storage on your device at all times.
- Save your project frequently while editing.
- Do a low-resolution test export before rendering the final high-quality version.
- Keep Alight Motion updated to the latest version.
- Resize very large images to match your project resolution before importing them.
Frequently Asked Questions
Why does my export fail at 99%?
When an export fails near the end, rendering usually completed but the app couldn’t save the file. This is almost always a storage space or permission issue. Free up storage, confirm Alight Motion has storage permission, and try again.
Can I recover a project that won’t export?
In most cases, yes. Your project data is separate from the export process. Try exporting the project as a package (XML) to back it up. If the project itself seems corrupted, duplicate it and delete the most recently added layers from the copy, then try exporting the duplicate.
Do modified APKs cause more export failures?
Unofficial or modified versions of Alight Motion can behave unpredictably, including export failures, crashes, or missing features. They also carry security risks. If you’re using one and having problems, read our guide to the risks of modified Alight Motion apps before troubleshooting further.
Does exporting on a PC work better?
Running Alight Motion on a PC (via an emulator) gives you more processing power and storage, which can help with complex projects. However, emulators have their own quirks. See our guide to using Alight Motion on PC for setup details. On iPhone, make sure the app is updated via the App Store — see our Alight Motion iOS guide.