Convert Windows Media Video (.wmv) to Matroska Video (.mkv) online for free. Fast, secure video conversion with no watermarks or registration.
Conversion settings — add a file to adjust
Upload your .wmv 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 .mkv file when it's ready.
WMV uses Microsoft's ASF container with VC-1 or WMV2 codecs and WMA audio. MKV (Matroska Video) is the open-source container that supports virtually every codec ever created — H.264, H.265, VP9, AV1, VC-1, DTS, FLAC, and hundreds more. MKV also supports unlimited audio tracks, subtitle tracks (SRT, SSA, VobSub), chapters, and attachments. Converting WMV to MKV can be a zero-loss remux (since MKV accepts VC-1) or a full transcode to modern codecs.
MKV provides features that ASF/WMV cannot: embedded subtitles in multiple languages, multiple audio tracks, chapter markers, and broad media server support (Plex, Jellyfin, Kodi). If you manage a video library, MKV is the preferred archival container. For WMV files, MKV also removes any Windows Media DRM dependencies (DRM-free sources only) and provides a clean, open-source container.
For a remux, FFmpeg copies the VC-1 video and WMA audio bitstreams directly into the MKV container without re-encoding — this is near-instant and lossless. For transcoding, video is re-encoded to H.264 or H.265 and audio to AAC, FLAC, or Opus. MKV's EBML-based structure supports rich metadata, ordered chapters, and segment linking. Additional subtitle (.srt, .ass) and audio tracks can be muxed in during conversion.
Remuxing preserves the exact original quality — every bit of video and audio data is identical to the WMV source. Transcoding quality depends on the target codec and settings. H.264 at CRF 18–20 in MKV produces excellent results, typically exceeding the visual quality of VC-1 at equivalent file sizes.
| Device | WMV | MKV |
|---|---|---|
| Windows PC | Native | Partial |
| macOS | Partial | Partial |
| iPhone/iPad | Partial | Partial |
| Android | Partial | Partial |
| Linux | Partial | Partial |
| Web Browser | No |
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
8MB free, 50MB Nitro
WMV to MKV conversion is the best path for archival, media server, and multi-track video needs. MKV's flexibility and universal codec support make it the ideal container for preserving and enhancing WMV content.
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| No |
| الميزة | WMV | MKV |
|---|---|---|
| الاسم الكامل | Windows Media Video | Matroska Video |
| الامتداد | .wmv | .mkv |
| الأفضل لـ | Windows native | Multiple audio tracks |