Convert WebM Video (.webm) to Windows Media Video (.wmv) online for free. Fast, secure video conversion with no watermarks or registration.
Conversion settings — add a file to adjust
Upload your .webm file by dragging it into the upload area or clicking to browse.
Choose your output settings. The default settings work great for most files.
Click Convert and download your .wmv file when it's ready.
WebM uses VP8/VP9/AV1 video — modern open-source codecs. WMV (Windows Media Video) uses VC-1 or older WMV codecs in Microsoft's ASF container. WMV was the dominant Windows video format from 1999-2012. Converting WebM to WMV targets legacy Windows systems that cannot handle modern open codecs.
Legacy Windows Media Player, Windows Movie Maker, PowerPoint (pre-2013), and enterprise video platforms cannot play WebM or decode VP8/VP9 video. WMV provides a Windows-native format recognized by all Windows systems from XP through 11.
This conversion is primarily for corporate environments standardized on Windows Media and for embedding video in older Office documents.
FFmpeg decodes VP8/VP9 video and Opus/Vorbis audio from WebM, then transcodes to VC-1 (wmv3) video with WMA audio in the ASF container. Bitrates range from 1-15 Mbps. Resolution up to 1080p is supported. The ASF container uses a packet-based structure with global headers.
VC-1 is less efficient than VP9 — expect files 30-50% larger at comparable quality. At adequate bitrates (3-5 Mbps for 720p), VC-1 produces good results but cannot match VP9's quality-per-bitrate ratio.
| Device | WebM | WMV |
|---|---|---|
| Windows PC | Partial | Native |
| macOS | Partial | Partial |
| iPhone/iPad | Partial | Partial |
| Android | Native | Partial |
| Linux | Partial | Partial |
| Web Browser | Native |
Resolution: 1920x1080
Bitrate: 8-12 Mbps
H.264 recommended for fast processing
Resolution: 1080x1080
Bitrate: 3.5 Mbps
Square or 9:16 for Reels
Resolution: 1080x1920
Bitrate: 4 Mbps
9:16 vertical, under 60s ideal
Resolution: 1280x720
Bitrate: 5 Mbps
Under 140s, 512MB max
Resolution: 960x540
Bitrate: 2 Mbps
16MB limit for standard, 64MB for document
Resolution: 1280x720
Bitrate: 4 Mbps
WebM to WMV serves legacy Windows ecosystem requirements, making modern web video accessible to Microsoft's media infrastructure.
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8MB free, 50MB Nitro
Alle nettlesere, alle enheter
| Egenskap | WebM | WMV |
|---|---|---|
| Fullt navn | WebM Video | Windows Media Video |
| Filendelse | .webm | .wmv |
| Best egnet for | Web optimized | Windows native |