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Local processing has no fixed file-size limit and depends on browser memory. Server limits: video 100 MB, other files 10 MB · Up to 5 files per batch
No registration · Free to useWhen to use this tool
WMV is a Windows video format; other devices may require a compatible player. MKV can hold multiple tracks; a format conversion does not promise to retain every track.
Quality and output
MKV can hold multiple tracks; a format conversion does not promise to retain every track. Quality changes depend on the input and output formats. A format change cannot restore information already lost.
How to use
- Upload a valid WMV file.
- Run the conversion to MKV.
- Download the result and check it before replacing your original.
Before you download
Video conversion selects the first video track and, when present, the first audio track. Extra audio tracks and subtitles are not retained; check the exported picture and sound.