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WMV to FLAC Converter

Convert WMV to FLAC online for free. Fast, secure, and high-quality conversion with no sign-up or software required.

Free to useNo file stored beyond 1 hourEncrypted over TLS 1.2/1.3No watermarks

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How it works

Three steps to your converted file

Everything happens in your browser tab - upload, pick a format, download. The heavy lifting runs on our servers.

01

Upload your file

Drag and drop, click to browse, or paste a URL. Batches take up to 20 files at once - 230+ input formats across video, audio, image, document, and archive types.

02

Choose an output format

Pick from over a hundred output formats. Filter by category or search by name - every option is open to everyone, no account needed.

03

Convert & download

Hit Convert and grab your download link moments later. Originals are erased when the job completes; results are cleared within about an hour.

What is a WMV file?

Windows Media Video (WMV) refers to a series of video codecs and their corresponding coding formats developed by Microsoft, typically encapsulated in the Advanced Systems Format (ASF) container. The format evolved through several iterations (WMV7, WMV8), culminating in WMV9, which was standardized by SMPTE as VC-1 (SMPTE 421M). WMV utilizes inter-frame compression and was originally designed for internet streaming applications and the Windows Media framework, supporting variable bit rate (VBR) and digital rights management (DRM).

How to open a WMV file

WMV files open natively in Microsoft Windows environments via Windows Media Player and the Movies & TV app. On macOS, native support is absent, requiring third-party tools such as VLC media player or the legacy Flip4Mac component for QuickTime. Cross-platform suites like MPlayer and DivX Player also support the ASF container and VC-1 codec family required to render WMV content.

WMV Technical Info

Full Name
Windows Media Video
Developed By
Microsoft
Initial Release
1999
MIME Type
video/x-ms-wmv

What is a FLAC file?

The Free Lossless Audio Codec (FLAC) is an open-source audio coding format developed by the Xiph.Org Foundation that compresses digital audio without any loss of data (bit-perfect preservation). It employs linear prediction and Rice coding (Golomb-Rice) rather than the perceptual psychoacoustic modeling used in MP3 or AAC. The format structure consists of the 'fLaC' stream marker, metadata blocks (Streaminfo, Vorbis comments for tags, Seekpoints), and audio frames, typically achieving compression ratios of 50-70% compared to raw PCM WAV files.

How to open a FLAC file

FLAC enjoys extensive native support on modern platforms, including Windows 10/11, Android, and macOS (starting with macOS High Sierra). For older systems or advanced playback control, software such as Foobar2000 (Windows) or Vox (macOS) is recommended. The VLC media player is a universal solution for all operating systems, handling FLAC streams and associated metadata seamlessly.

FLAC Technical Info

Full Name
Free Lossless Audio Codec
Developed By
Josh Coalson / Xiph.Org Foundation
Initial Release
2001
MIME Type
audio/flac

More tools

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Why RunConvert

The fastest way to convert any file

Purpose-built for speed, privacy, and breadth of format support.

Convert WMV to FLAC in seconds

Every WMV to FLAC conversion runs on our servers, so your device stays fast and the output quality stays intact.

Fast, cloud-powered

No queue, no waiting. Files are processed on high-performance servers and returned in seconds, even for large files.

Secure & private

Encrypted in transit and never shared with anyone. Uploads are erased the moment your job completes, and results shortly after.

Free - no account needed

Convert without creating an account - no credit card, no trial clock. Sign in only if you want history and higher daily limits.

Developer API

Convert WMV to FLAC via API

Automate WMV to FLAC conversions in three steps: create a job, upload your file, then poll for the result.

# 1. Create job
curl -X POST https://api.runconvert.com/v3/jobs \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "tag": "wmv-to-flac",
    "tasks": {
      "upload-file": {
        "operation": "import/upload"
      },
      "convert": {
        "operation": "convert",
        "input": "upload-file",
        "output_format": "flac"
      },
      "export-result": {
        "operation": "export/url",
        "input": "convert"
      }
    }
  }'

# 2. Upload your file (use upload_url from the response)
curl -X PUT "$UPLOAD_URL" --upload-file input.wmv

# 3. Poll for result
curl https://api.runconvert.com/v3/jobs/$JOB_ID?include=tasks \
  -H "Authorization: Bearer YOUR_API_KEY"

Replace YOUR_API_KEY with your RunConvert API key. Get your free API key at runconvert.com/api.