Convert WMV to FLAC Online
Extract audio from corporate WMV recordings to lossless FLAC, free, in your browser.
.wmv · up to 100 MB
What it's for
WMV to FLAC: lossless corporate audio archive
Lync/Skype recordings preserved
Convert corporate meetings from WMV to lossless FLAC for permanent high-quality archiving.
Naim and Linn compatible
FLAC playable on Naim Uniti, Linn DSM, and FiiO network players without additional conversion.
No additional degradation
FLAC preserves the best possible copy of the original WMA without introducing new re-encoding losses.
Private, no servers
Your corporate recordings are processed locally in your browser with FFmpeg.wasm.
How it works
Three steps, no hassle
Upload your WMV file
Drag or select your .wmv. Meeting recordings, Lync/Skype videoconferences, narrated presentations. Up to 500 MB.
Extraction and FLAC conversion
FFmpeg decodes the WMA audio from the WMV and re-encodes to lossless FLAC. No server uploads.
Download the FLAC
Lossless audio ready for archiving, transcription, or playback on Naim, Linn, or FiiO hi-fi players.
FAQ
Got questions?
Technically yes as a container, but honesty matters: WMV audio is encoded in WMA (Windows Media Audio), a lossy format. Converting WMA to FLAC decodes the WMA to PCM and re-encodes to lossless FLAC. The result is a lossless FLAC, but the source already suffered WMA compression. You don't recover information WMA discarded during encoding. What you get is the best possible copy of that WMA audio, with no additional lossy re-encoding degradation. If the original WMV used WMA Lossless (WMA LL), the resulting FLAC is fully equivalent to the original audio.
Corporate videoconference recordings from Lync (now Skype for Business) and early versions of Teams were saved as WMV. Converting to FLAC allows: archiving meeting minutes in the highest-quality format without degradation from future re-encodings; using automatic transcription tools like Whisper (OpenAI) or Azure Speech that work better with clean audio; playing audio on corporate or meeting-room hi-fi systems that support FLAC; and long-term preservation of recordings of important negotiations or corporate decisions at reference quality.
WMV files generated by Microsoft Lync, Office Communications Server, or older Teams Desktop Recorder typically contain WMA Standard (v2/v7/v8/v9) at bitrates between 32 kbps and 128 kbps in mono or stereo. Screen recordings from Windows tools (Xbox Game Bar, OBS in WMV mode) can reach WMA at 192 kbps stereo. The WMA bitrate directly determines the quality of the resulting FLAC: higher WMA bitrate means more audio information was preserved in the original file.
Yes. Naim network players (Uniti Atom, Nova, Star, ND 555) and Linn streamers (Klimax DSM, Selekt DSM, Majik DSM) support FLAC natively through their control apps (Naim App, Kazoo/Linn App). The FLAC from a corporate WMV will play on these systems without compatibility issues. Playback quality is limited by the original WMA source, but FLAC ensures no additional re-encoding distortion when archiving or distributing audio on your home or meeting-room system.
Convertir.ai processes one file at a time in your browser. For batch-converting multiple WMV files, the most direct command-line option is FFmpeg: ffmpeg -i meeting.wmv -c:a flac audio.flac extracts and converts WMV audio to FLAC in seconds. Automate full-folder conversion with a bash script (for f in *.wmv; do ffmpeg -i "$f" "${f%.wmv}.flac"; done) or with FFmpeg Batch AV Converter on Windows.
FLAC is preferable when the archive has long-term value (5–10+ years), since FLAC is an open, patent-free format maintained by Xiph.Org with no commercial obsolescence risk; when the recording may need future processing (noise filtering, volume normalisation, transcription), since FLAC avoids degradation from successive re-encodings; and when the organisation has players or archival systems that natively support FLAC. MP3 is sufficient for casual distribution or one-time listening, but for permanent preservation FLAC is the professional standard.
Convert WMV to FLAC: lossless corporate audio archiving
WMV (Windows Media Video) was for over a decade the de facto standard for corporate recordings in the Microsoft ecosystem: Microsoft Lync (2010–2015), Office Communications Server, and early versions of Skype for Business automatically generated WMV files when recording meetings, presentations, and videoconferences. These recordings contain audio in WMA (Windows Media Audio) format, Microsoft's lossy compression codec developed as an alternative to MP3. The transition to the FLAC ecosystem for long-term corporate archiving is driven by several technical factors: FLAC is an open format maintained by the Xiph.Org Foundation without commercial licensing dependencies, compatible with virtually all audio analysis software, automatic transcription tools, and hi-fi players; WMV and WMA, by contrast, are proprietary Microsoft formats whose support on non-Windows systems has historically been inconsistent and whose long-term future depends on Microsoft's corporate decisions.
It is essential to understand the honest limitations of WMV-to-FLAC conversion: the WMA audio inside a WMV is a lossy format, and converting to FLAC does not recover information the WMA encoder discarded during original compression. The resulting FLAC is a perfect lossless copy of the decoded WMA audio, not a restoration of the uncompressed original. In practice, this means the FLAC inherits the spectral characteristics of WMA compression: at low bitrates (32–64 kbps, common in Lync voice recordings), the FLAC preserves WMA compression artefacts (pre-echo, quantisation noise modulation) without adding new ones; at medium-high bitrates (128–192 kbps), WMA audio quality is sufficient for the FLAC to be perceptually equivalent to the original for most corporate uses. The exception is WMA Lossless (WMA LL), present in some Microsoft multimedia production workflows, where conversion to FLAC produces a genuinely lossless file.
Convertir.ai executes WMV-to-FLAC conversion entirely in the browser via FFmpeg.wasm, without the recording leaving the user's device. This is particularly relevant for sensitive corporate content: management meeting recordings, contract negotiations, training sessions with confidential information, or presentations with proprietary material. The technical pipeline is: demultiplexing the WMV container (ASF/Advanced Systems Format) to extract the WMA audio stream; WMA decoding via libavcodec's wmav2 decoder to 32-bit floating-point PCM; quantisation to 16 or 24 bits depending on content; and FLAC encoding via libFLAC at compression level 8. The result is a .flac file playable on Naim Uniti, Linn Klimax DSM, FiiO X7, Astell&Kern SR35, foobar2000, VLC, and any modern player with native FLAC support — no watermarks, no registration, no usage limits.