FLAC Won't Open? Convert to CVU Instantly
Fast, instant FLAC to CVU conversion. No signup required. Just drop your .flac file and get .cvu in seconds.
Batch Settings
About FLAC to CVU Conversion
Dealing with a FLAC file that won't open on your device? You're not alone — FLAC compatibility issues are one of the most common reasons people search for a file converter. FLAC is lossless audio compression — bit-for-bit identical to the original at roughly 50-70% of WAV size.
The fix is simple: convert your FLAC to CVU. CVU is a widely used file format. This conversion lets you convert between formats quickly, solving the problem in seconds rather than hours of troubleshooting.
Converting FLAC to CVU maintains high quality with CocoConvert's optimised encoder settings.
CocoConvert processes your FLAC file on secure servers in Germany — upload, convert, download. Your files are encrypted via TLS and automatically deleted within 24 hours. No account needed, no software to install, and it works on any device with a browser.
This conversion is ideal when you When you need a CVU file.
The conversion engine behind CocoConvert uses FFmpeg, Sharp, and qpdf — the same open-source libraries trusted by Netflix, YouTube, and enterprise platforms. Pro users can batch convert up to 100 files at once.
How to Convert FLAC to CVU
- 1
Add your FLAC file
Drag and drop your .flac file into the converter, or tap "Browse" to pick it from your device. Multiple files are supported for batch processing.
- 2
Pick CVU output
Select .cvu as the target format. CocoConvert automatically applies the best quality settings for this conversion.
- 3
Start conversion
Hit the Convert button. The audio engine processes your file server-side — no CPU drain on your device.
- 4
Save your file
Once done, download your .cvu file. For batch jobs, download all at once as a zip.
What Happens When You Convert FLAC to CVU
Your FLAC file is decoded and re-encoded as CVU.
Your FLAC file is uploaded and validated
The file is decoded (parsed into its raw data)
The data is re-encoded in CVU format
The converted file is ready for download
Format Comparison
FLAC
.flac file
| Extension | .flac |
| MIME Type | audio/flac |
| Category | Audio |
CVU
.cvu file
| Extension | .cvu |
| MIME Type | audio/x-cvu |
| Category | Audio |
Should You Convert FLAC to CVU?
When to Convert
- ✓When you need a CVU file
Frequently Asked Questions
Why won't my FLAC file open?
FLAC files may not open if your device lacks the right codec or application. Converting to CVU — a more widely supported format — usually resolves this. CVU is a widely used file format.
Is it safe to convert FLAC to CVU online?
Yes. CocoConvert encrypts your file via TLS, processes it on isolated servers in Germany, and permanently deletes it within 24 hours. Your files are never shared or analysed.
Will I lose quality converting FLAC to CVU?
Converting FLAC to CVU maintains high quality with CocoConvert's optimised encoder settings. CocoConvert uses high-quality encoder defaults to preserve as much fidelity as possible.
How large can my FLAC file be?
Free users can convert files up to 250 MB each. Pro users get a 5 GB limit per file, and Business API users have custom limits.
Can I convert FLAC to CVU on my phone?
Absolutely. CocoConvert works in any modern browser — iOS Safari, Android Chrome, and all desktop browsers. No app required.
Versions are pinned in our worker Dockerfile and re-built via CI on every change.