Convert WMV to MKV — Free Online Converter
Convert Windows Media Video (.wmv) to Matroska Video (.mkv) online for free. Fast, secure video conversion with no watermarks or registration....
2M+ файлов конвертировано
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Как конвертировать
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.
About WMV to MKV Conversion
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.
Why Convert WMV to MKV?
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.
Common Use Cases
- Repackaging WMV video collections into MKV for Plex or Jellyfin media servers
- Adding subtitle tracks to WMV videos by converting to MKV with embedded SRT files
- Converting WMV movies into MKV with chapter markers for easy scene navigation
- Migrating WMV corporate video archives to the open-source MKV container for long-term preservation
- Combining WMV video with external audio tracks (commentary, alternate languages) in a single MKV file
How It Works
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.
Quality & Performance
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 Compatibility
| Device | WMV | MKV |
|---|---|---|
| Windows PC | Native | Partial |
| macOS | Partial | Partial |
| iPhone/iPad | Partial | Partial |
| Android | Partial | Partial |
| Linux | Partial | Partial |
| Web Browser | No | No |
Recommended Settings by Platform
YouTube
Resolution: 1920x1080
Bitrate: 8-12 Mbps
H.264 recommended for fast processing
Resolution: 1080x1080
Bitrate: 3.5 Mbps
Square or 9:16 for Reels
TikTok
Resolution: 1080x1920
Bitrate: 4 Mbps
9:16 vertical, under 60s ideal
Twitter/X
Resolution: 1280x720
Bitrate: 5 Mbps
Under 140s, 512MB max
Resolution: 960x540
Bitrate: 2 Mbps
16MB limit for standard, 64MB for document
Discord
Resolution: 1280x720
Bitrate: 4 Mbps
8MB free, 50MB Nitro
Tips for Best Results
- 1Remux for speed (seconds, zero quality loss) when the WMV content will only be played through VLC or MPC-HC, which handle VC-1 natively.
- 2Transcode to H.264 for media server use (Plex, Jellyfin) to avoid server-side transcoding on client playback.
- 3Embed subtitle files during conversion — MKV supports SRT, SSA/ASS, and VobSub subtitle formats natively.
- 4Use MKVToolNix after conversion to add chapter markers, reorder tracks, set default audio/subtitle, or merge additional streams.
- 5Set the first audio track as the default and mark subtitle tracks as forced/default for optimal Plex/Jellyfin behavior.
Related Conversions
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.