MP4 to WMV Converter — Free, Online, No Upload

You have a video in MP4 and you need to embed it in a PowerPoint presentation on an older Windows machine, hand it off to a corporate AV system, or upload it to a legacy intranet platform that only recognizes Windows Media Video files. Modern Windows plays MP4 fine, but older Windows environments, corporate video kiosks, and some educational platforms still list WMV as their required format — and they genuinely won't accept anything else.

WMV (Windows Media Video) is Microsoft's proprietary video container. Windows Media Player opens WMV without any additional software on every version of Windows since XP. Some corporate learning management systems (LMS), older SharePoint installations, and legacy video production workflows specify WMV because it was the Windows default during the years those systems were built. Converting your MP4 to WMV produces a file that these environments play without configuration or complaints.

This converter writes Windows Media Video 8 (WMV2) with WMA sound — an older codec that needs more data than H.264 for the same picture, so the WMV usually comes out larger than the MP4 (a 310 KB test clip became 548 KB). It uses a fixed high quality level, so there is no bitrate to set. Outside of Windows, WMV support is patchy: a Mac needs an app such as VLC, and Linux needs additional GStreamer codecs. Only convert to WMV when the destination specifically demands it.

Typical sizes: MP4 100–300 MB (1 minute 1080p); WMV 50–150 MB (1 minute 720p).