Repair a corrupted AAC file that won't open.
Upload an AAC file that won't open or play. AAC is accepted for analysis; if the current repair engine cannot rebuild it, we tell you before checkout and you pay nothing.
Free preview — pay only if you download ($8)
Your files auto-delete — delete them sooner anytime
No person looks at your file as part of repair
Uploading your file.
Keep this tab open while the file transfers. Large files can take a few minutes.
Starting upload...
Recovering what we can.
Analyzing your file...
Here's what we recovered.
Review the watermarked preview before checkout. It is 12 seconds sampled from the start, middle and end of your recording.
Your files auto-delete — delete them sooner anytime
No person looks at your file as part of repair
Repair your file
Choose a supported file to see what can be repaired before checkout.
Simulated checkout — no payment is processed.
Optional — we'll email your private download link.
You preview before you pay. If the download is materially worse than the preview you approved, we'll refund you.
Try another fileGood news — your file isn't damaged. No charge.
There's nothing to repair. If it still looks broken, the issue may be the player, codec, or viewer on your device rather than the file itself.
We couldn't recover this one.
The file is too damaged to rebuild, so there is nothing to preview and no charge.
Have another clip from the same device?
A healthy video recorded on the same device — ideally the same settings — gives the repair engine a template to rebuild from. It can unlock repairs that fail on their own.
Unrepaired files are kept encrypted for up to 30 days, then deleted.
FileFix can't fix that kind of file yet.
Right now we repair video, audio, document, and image files (MP4, MOV, M4V, MKV, AVI, TS, MTS, M2TS, MPG, MPEG, VOB, 3GP, WebM, FLV, M4A, WAV, MP3, AAC, FLAC, OGG, AIFF, XLSX, DOCX, PPTX, ODT, ZIP, PDF, AI, HEIC, and HEIF). We're adding support for more formats over time.
Something went wrong.
The request could not be completed.
Why AAC files stop opening
AAC is the audio codec behind most streamed and recorded sound — it shows up as raw .aac streams and inside .m4a containers. Most "corrupted AAC" problems are damage to the framing or container structure the decoder needs to line up the audio, not to the sound itself. That structure breaks after an interrupted transfer, a truncated download, or an app that stopped writing early.
FileFix accepts AAC files and analyzes what is recoverable, but the current repair engine does not yet rebuild every AAC failure mode. If it cannot produce a playable result, you see that before checkout and pay nothing.
It also cannot recover audio that was never recorded.
What we can and can't fix
What happens when you upload
- AAC files are accepted for analysis, with the result shown before checkout.
We can't fix
- The current engine may decline an AAC it cannot honestly rebuild; genuinely empty, deleted, and DRM-protected files also cannot be repaired. More →
How it works
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Upload Drop a supported audio file in. It uploads over an encrypted connection. The repair runs automatically — no person listens to your file.
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Free Watermarked Preview You hear a free watermarked preview clip and see exactly how much we recovered.
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Pay & Download If it's right, you pay $8 once and download a clean, full-quality audio file.
About half of real-world corrupted files repair fully; you preview before you pay.
See what's recoverable.
Free preview · pay only if it worked · private & auto-deleted
Related fixes
Questions
Uploads use one automatic flow for supported audio up to 2 GB. If a file is too large, we tell you before repair starts.
Yes — encrypted upload, automatic processing. Originals of successful repairs are deleted when your repair is delivered; unrepaired files are kept encrypted for up to 30 days, then deleted.
No preview, no charge.