Convert WebM to WMV Online
Convert browser WebM recordings to WMV for native Windows playback. Free, no uploads.
.webm · up to 100 MB
Corporate Windows compatibility
WebM to WMV: browser recordings ready for the Microsoft ecosystem
VP8/VP9 to WMV2
Convert Chrome, Meet, or Loom recordings with VP8 or VP9 codec to the WMV2 format native to Windows Media Player.
Corporate PowerPoint
WMV is the most reliable embedded video format in PowerPoint presentations in corporate environments with restrictive GPOs.
No servers, no uploads
Corporate screen recordings never leave your device. Local conversion with FFmpeg.wasm.
Windows Media Services
Distribute screencasts on corporate intranets via Windows Media Services, which only natively serves WMV/ASF.
How it works
Three steps, no hassle
Upload your WebM file
Drag or select your .webm: Chrome screen recordings, Meet or Zoom screencasts, VP8 or VP9 clips.
Re-encode to WMV in the browser
FFmpeg.wasm decodes VP8 or VP9 from the WebM container and re-encodes to WMV2 in an ASF container. No servers, no uploads.
Download your WMV
Get the .wmv file ready for Windows Media Player, PowerPoint embedding, and corporate Microsoft intranet deployment.
FAQ
Got questions?
Chrome, Edge, and Firefox use the MediaRecorder API with VP8 or VP9 as the default video codec, producing .webm files. Tools like Google Meet, Loom, OBS in browser mode, and screencast extensions generate WebM because it is the native format for web video. The problem appears when you need to use those clips on Windows: the Windows media player does not include native support for VP8/VP9 in most corporate configurations.
WMV2 (Windows Media Video 8) is used — the most compatible WMV codec, introduced by Microsoft in 2001. WMV2 is playable in Windows Media Player from version 7 (Windows 98/ME/2000/XP) through Windows 11 without installing additional codecs. The container is ASF (Advanced Systems Format), the Microsoft standard for WMV.
Yes. PowerPoint 2010 onward supports WMV embedded directly in the presentation (.pptx), with playback independent of external codecs. In corporate environments with group policies blocking third-party codec installation, WMV is the most reliable format for embedded video in presentations that will run on different machines across the organization.
Yes. OBS Studio can record to WebM with VP8 or VP9. These files have an exact creation timestamp embedded in the WebM container metadata. FFmpeg.wasm decodes them correctly and re-encodes to WMV2. The only limitation is that OBS sometimes generates WebM with multiple audio tracks; only the first audio track is retained in the conversion.
In many corporate Windows environments managed by Group Policy (GPO), third-party browsers or Windows Store codecs are restricted. This means VP8/VP9 are unavailable in the default media player. WMV2 is built into the operating system since Windows XP and requires no additional component installation, making it the safest distribution format in corporate Microsoft IT.
Yes, there is a lossy re-encode. VP8 and VP9 are more modern and efficient codecs than WMV2: at the same bitrate, VP9 delivers 30–50% better visual quality than WMV2. However, for screen recordings at reasonable bitrates (1–4 Mbps), the quality difference is not perceptible during normal playback. For maximum quality, keep the original WebM and only distribute the WMV for systems that cannot play VP8/VP9.
Convert WebM to WMV: browser recordings to the Microsoft ecosystem, VP8/VP9 to WMV2, corporate Windows compatibility
WebM is an open-source video format developed by Google in 2010, designed specifically for the web. It uses a simplified Matroska container (.webm) with VP8 or VP9 video codec (also developed by Google after acquiring On2 Technologies in 2010) and Vorbis or Opus audio. Since 2013, the MediaRecorder API in modern browsers has used WebM as the default recording format, meaning any browser-based screen recording tool — Google Meet (meeting recordings available since 2020 for Workspace accounts), Loom (founded 2016), Screencastify, Chrome Screen Recorder, and JavaScript-captured webcam video recordings — generates .webm files with VP8 or VP9 codec. The Windows compatibility problem arises because VP8 and VP9 are not natively included in Windows system codecs: Windows Media Player, the built-in player since Windows 95 and last updated as an OS component in Windows 10 version 1803, does not play VP8 or VP9 without installing the VP9 codec package from the Microsoft Store — which in corporate environments managed with Group Policy is frequently blocked. WMV (Windows Media Video), introduced by Microsoft in 1999 as part of Windows Media Player 6.4 and consolidated with WMV2 in 2001 and WMV3/VC-1 in 2003, is the most deeply integrated video codec in the Windows operating system and across all of Microsoft's corporate video distribution infrastructure.
Converting WebM to WMV is especially relevant for three specific corporate scenarios. First, meeting recording distribution: organizations that record Google Meet or Microsoft Teams meetings as WebM and need to distribute them internally via SharePoint, Windows Media Player-embedded intranets, or corporate learning management systems (LMS) predating 2015 that only accept WMV. Second, PowerPoint presentations: PowerPoint 2010, 2013, 2016, 2019, and Microsoft 365 support WMV video embedded directly in the .pptx, but when the file runs on a machine without VP9 installed, WebM videos do not play; converting to WMV solves this definitively. Third, Windows Media Services: the streaming server included in Windows Server 2003, 2008, and 2012 R2 requires ASF/WMV for unicast and multicast intranet video distribution, with no native ability to serve WebM. Additionally, many corporate digital signage systems based on Windows Media Player in kiosk mode, installed between 2005 and 2015, are configured to play WMV/ASF playlists and cannot easily be updated to support new formats. For these environments, converting recent WebM recordings to WMV is the most straightforward solution for integrating new content into legacy infrastructure.
Convertir.ai performs WebM to WMV conversion directly in the browser via FFmpeg.wasm, the compilation of FFmpeg to WebAssembly maintained by Fabrice Bellard and the open-source community. This means WebM files — which frequently contain sensitive corporate screen recordings, confidential meetings, internal training materials, or product demonstrations — never leave the user's device and never pass through external servers. For IT departments operating under information security policies based on ISO 27001, GDPR, HIPAA, or sector regulations requiring that meeting and internal communication recordings remain within the organization's controlled perimeter, this local processing is a technical guarantee, not just a commercial promise. No user registration, no watermarks on the result, no size limits beyond available device memory, and the conversion works offline once the page has loaded — relevant for restricted-connectivity environments. Converting VP9 (the more modern WebM codec, with better compression) to WMV2 implies a file size increase — typically 20–50% depending on content — because WMV2 is less efficient than VP9. To minimize this increase, the tool applies FFmpeg's adaptive bitrate to maintain perceived visual quality with the smallest possible file size in WMV2.