Video converter · runs 100% in your browser
AVI to WMV Converter
Convert AVI video to WMV in your browser. AVI is older Microsoft container, broad legacy support, weaker streaming; WMV is Windows Media Video container, native on Windows. The re-encoding runs through a WebAssembly FFmpeg build — no cloud render farm, no upload bar, no privacy worries.
How to use
- Drop your AVI video onto the page.
- FFmpeg.wasm boots locally on first use — give it a moment, it caches for the rest of your session.
- Re-encoding to WMV happens entirely in your browser; your video never uploads.
- Download the WMV file when conversion finishes — large videos take a few minutes.
FAQ
Why is the first AVI to WMV conversion slow to start?
The first audio or video conversion of your session downloads the FFmpeg.wasm runtime (~25 MB). Subsequent conversions skip that step. After it loads, AVI → WMV re-encoding starts immediately.
Does the converter re-encode or just remux?
It re-encodes both video and audio so that the resulting WMV file is widely compatible. Pure remuxing is a future option but is not yet exposed in the UI.
What codec does the WMV output use?
WMV2 video and WMAv2 audio for native Windows playback. Quality and bitrate are tuned for a sensible default.
Does video really not upload?
Correct. The conversion runs locally via FFmpeg.wasm. You can verify in DevTools: no outbound traffic carrying your file.