Is this WMV to FLAC converter really free?

Yes. Up to 5 files at a time, no signup, no catch. The free tier adds a small watermark to image output — Pro ($9.99/mo or $49/yr) removes it, raises the file size limit to 500 MB, and unlocks unlimited batch conversion.

Are my files uploaded to a server?

No — and you can verify it yourself. Open DevTools → Network tab, then convert a file. You'll see zero upload requests. Everything runs right in your browser. We never see your files.

How long does conversion take?

Usually 1–3 seconds for a typical file. The very first conversion on a fresh page load may take 5–20 seconds while the converter engine loads — after that it's instant. Your CPU does all the work locally.

What is the file size limit?

Free: up to 10 MB per file, 5 files per batch. Pro: up to 500 MB per file, unlimited batch. If you're working with large videos or RAW photos, Pro is built for that.

Can I batch convert multiple WMV files at once?

Yes — drop multiple files at once (or Ctrl/Cmd+click to select them) and they all convert in parallel. Free accounts handle up to 5 files per batch; Pro has no limit.

What bitrate will the converted audio use?

We default to 192 kbps for MP3, 128 kbps for OGG/Opus, and 320 kbps for M4A/AAC. These settings are perceptually transparent — most listeners can't tell the difference in a blind test.

Will my metadata (ID3 tags, album art) be preserved?

Yes, when both formats support it. Tags carry over on conversions like MP3→M4A or FLAC→MP3. WAV has limited tag support, so some metadata may not transfer.

Is FLAC from a WMV source truly lossless?

FLAC stores the decoded WMA audio without further loss. However, the WMA codec's original lossy compression is already baked in. FLAC is lossless from that point forward.

What hi-fi devices can play FLAC extracted from WMV?

Network streamers (Naim, Cambridge Audio, Bluesound, Sonos), audiophile media players (Roon, JRiver, Audirvana), and NAS music servers all natively read FLAC.

How private is this converter?

Completely private — by design, not policy. There is no upload endpoint. Files are processed right inside your browser tab and disappear the moment you close it. We collect only anonymous page-view counts; your file content is never seen or stored.

WMV to FLAC Converter — Free, Online, No Upload

How to convert WMV to FLAC online

1
Drop your WMV file
Drag and drop your Windows Media Video file onto the converter, or click to browse your files. You can select up to 5 at once. Nothing leaves your device — conversion happens right here in the browser.
2
Hit Convert — it happens locally
Click Convert and watch it go. There's no upload, no server queue, no waiting. The converter runs Windows Media Video → Free Lossless Audio Codec entirely in your browser tab. Most files finish in 1–3 seconds.
3
Download your FLAC
Your Free Lossless Audio Codec file is ready. Click Download, or grab a ZIP if you converted a batch. Close the tab and everything disappears — no copies kept anywhere.

WMV vs FLAC: format overview

WMV

Windows Media Video

Microsoft · 2003

Compression: lossy
Transparency: No

✓ Good compression for Windows-native workflows
✓ DRM support for content protection
✗ Not supported on macOS, iOS, Android natively

FLAC

Free Lossless Audio Codec

Josh Coalson / Xiph.Org · 2001

Compression: lossless
Transparency: No

✓ Lossless compression — identical to source
✓ 50–60% smaller than WAV with no quality loss

WMV magic bytes: 30 26 B2 75 8E 66 CF 11

FLAC magic bytes: 66 4C 61 43

Why convert WMV to FLAC?

WMV is a dead-end format. Microsoft has deprecated Windows Media technology, and the WMA audio codec inside WMV files is poorly supported outside of Windows. If you have archived recordings in WMV and want to preserve their audio for the long term — in a format that future software will still be able to read — converting now is the right decision.

FLAC is the archival audio format of choice. It is lossless, open, and supported by every serious audio software project: Plex, Jellyfin, Kodi, foobar2000, Audirvana, and more. Unlike proprietary formats, FLAC is guaranteed to remain decodable indefinitely because its specification is open and widely implemented. For audio archiving, FLAC is the obvious answer.

Converting WMV audio to FLAC decodes the WMA audio and stores it as lossless FLAC. It is important to note that WMA is a lossy codec — converting it to FLAC does not restore lost quality. The FLAC output is a lossless copy of the already-compressed WMA audio. What you gain is format longevity, broad software compatibility, and freedom from Windows-only codec dependencies. If the original WMA was high-bitrate, the quality loss is small and the FLAC archive will be entirely usable for years to come.

Quality & file size: WMV to FLAC

Typical file sizes: WMV 50–150 MB → FLAC 20–40 MB.

Converting from lossy WMV to lossless FLAC will not recover detail the WMV codec already discarded — but the output will not degrade any further. This is useful when you need a lossless format for editing or compatibility without additional compression artifacts.

Color depth: WMV supports standard color, FLAC supports standard color.

Transparency: WMV does not support transparency. FLAC does not support transparency — transparent areas become solid white.

Frequently asked questions

Privacy: how FormatDrop handles your files

Your WMVfiles are converted 100% inside your browser. They are never uploaded to our servers, never stored, and never seen by anyone other than you. This isn't a privacy policy claim — it's an architectural guarantee: our server has no endpoint that receives file bytes.