Zoom recorder lost power mid-take? Get the WAV back.
Your recorder lost power mid-take and the WAV won't open, or opens as 0:00. Upload the file as it came off the card: we rebuild the header from the audio that is actually there and you hear a free preview before you pay.
Free preview — pay only if you download ($8 USD)
Your files auto-delete — delete them sooner anytime
No person looks at your file as part of repair
Uploading your file.
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Recovering what we can.
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Here's what we recovered.
Review the watermarked preview before checkout. It is up to 12 seconds sampled from the start, middle and end of your recording.
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.
Your files auto-delete — delete them sooner anytime
No person looks at your file as part of repair
We couldn't recover this one.
The file is too damaged to rebuild, so there is nothing to preview and no charge.
What stopped you continuing? One tap tells us why.
Try a deep repair
The repair engine can try a longer pass on the file you already uploaded.
Machine-only processing; no human views files; nothing is sent to an outside AI.
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, OPUS, AIFF, XLSX, DOCX, PPTX, ODT, ZIP, RAR, PDF, AI, HEIC, and HEIF). We're adding support for more formats over time.
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Why a Zoom WAV can show 0:00 after power loss
If your Zoom recorder lost power during a WAV take, the audio and its recorded length can disagree. Samples may have reached the card before the battery died, while the RIFF and data lengths in the header were never updated by a normal stop.
A player reading those unfinished lengths can show 0:00 or refuse to open the take. FileFix rebuilds the header lengths from the sample data present in the uploaded WAV and drops an incomplete final frame.
The end of the recording depends on what reached the card before power failed. Audio that was never written cannot be recreated; a 0-byte file has no audio to rebuild, and you are not charged.
What we can and can't fix
We can usually fix
- WAV takes from field recorders that lost power, had the card pulled, or ran out of space before the file was finalized.
We can't fix
- 0-byte recordings, or audio that was never written to the card. 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 USD once and download a clean, full-quality audio file.
You preview before you pay.
See what's recoverable.
Free preview · pay only if it worked · private & auto-deleted
Related fixes
Questions
A field recorder writes the WAV header when the take starts and fills in the RIFF and data lengths only when you press stop. If the batteries died or the card was pulled first, those lengths stay at zero, so players think the file is empty even though the samples were written to the card.
Copy the file off the card exactly as it is and upload that copy. Re-saving or converting it in an editor can drop the samples a player cannot see.
When the samples reached the card, rewriting the header lengths from the data that is actually there brings back the audio up to the moment power was lost. The preview shows exactly how much came back before you pay.
Then no audio reached the card and there is nothing to rebuild. See the 0-byte page for why, and you are not charged.