Convert WMV to OGG (Vorbis) Online
Convert audio from corporate WMV to OGG Vorbis, free, in your browser.
.wmv · up to 100 MB
What it's for
WMV to OGG: Windows corporate audio to the universal open format
Royalty-free
OGG Vorbis is 100% patent-free. Ideal for free software, Linux, and unrestricted distribution.
WMA to Vorbis
Decodes WMA Standard, WMA Pro, and WMA Voice from the WMV container to OGG Vorbis.
Native Linux and Android
OGG works without plugins in Firefox, Chrome, Godot, Unity, and native Linux players.
100% private
Corporate recordings processed in your browser. They never reach any server.
How it works
Three steps, no hassle
Upload your WMV file
Drag or select your .wmv. Lync meetings, Windows Media Encoder webinars, corporate presentations. Up to 200 MB.
Conversion to OGG Vorbis
FFmpeg decodes the WMA audio from the WMV and re-encodes to OGG Vorbis at high quality. No server uploads.
Download the OGG
Audio ready for Linux, Android, Firefox/Chrome browsers, game engines, or royalty-free podcast distribution.
FAQ
Got questions?
OGG Vorbis (specification published by the Xiph.Org Foundation in 2002) is a codec completely free of royalties and patents, under a BSD license. Unlike MP3 (whose last Fraunhofer patents expired in 2017) or AAC (which still has a complex licensing scheme via Via Licensing), OGG Vorbis never required distribution royalties. This makes it ideal for: distribution in free software projects, where code license terms cannot include royalty-bearing codec dependencies; open-source projects wanting legally unrestricted audio; Linux platforms that have historically preferred free formats for software freedom reasons. Additionally, OGG Vorbis offers superior quality to MP3 at equal bitrate according to multiple blind listening tests conducted by Hydrogenaudio (a specialized audio compression forum) between 2003 and 2010.
WMV files generated by the Microsoft corporate ecosystem can contain different WMA variants: WMA Standard (v1 and v2) is the most common codec in Lync 2010/2013 recordings and Windows Media Encoder, with bitrates of 32–192 kbps; WMA Pro is a higher quality variant reaching 768 kbps and supporting multichannel audio (up to 8 channels), used in some high-end corporate video conferencing systems; WMA Lossless is the lossless variant, rarely found in corporate recordings but possible in audiovisual production environments that used Windows Media as an intermediate format; WMA Voice (also called WMA 9 Voice) is a very low bitrate variant (4–20 kbps) optimized for voice, used in voicemail recordings and MMS. FFmpeg supports decoding of all these variants.
Yes. The WMV-to-OGG conversion chain involves two stages of lossy compression: first the original WMA (already lossily compressed) and then re-encoding to Vorbis. Each re-encoding of lossy audio to another lossy codec introduces generation loss: the compression artifacts of the original codec are amplified by the new codec. For archival preservation, best practice is to convert WMV to WAV (lossless), not OGG. However, for distribution and practical use, the WMA-to-Vorbis quality loss at a high Vorbis bitrate (quality level 6–8, equivalent to 160–240 kbps variable) is imperceptible for most listeners in voice recordings like meetings or webinars.
Yes. OGG Vorbis has had native support in open-source browsers for more than a decade. Firefox has had native OGG Vorbis support since version 3.5 (July 2009). Chrome/Chromium has had native support since its first public release in 2008. Opera supports OGG natively. The only major browser that historically did not support OGG was Safari (Apple), which prefers AAC and MP3 for licensing and hardware reasons. This means an OGG file served on a website will play natively in Firefox and Chrome without additional JavaScript, using the standard HTML5 <audio> element.
OGG Vorbis is the most widely supported audio format in open-source and cross-platform game engines. Unity supports OGG Vorbis natively on all platforms (PC, Mac, Linux, Android, iOS, WebGL) and recommends it for music and long-duration sound effects for its excellent quality/size ratio. Godot Engine uses OGG Vorbis as its primary audio streaming format (AudioStreamOGGVorbis), especially efficient on low-RAM devices where loading full WAV is impractical. FMOD and Wwise, the most widely used audio middleware in the game industry, both support OGG Vorbis natively. Many indie games built with Unity, Godot, Phaser, or SDL distribute all their audio in OGG Vorbis precisely because it is royalty-free. Converting WMV corporate video audio to OGG Vorbis is the standard process when repurposing narration from corporate presentations in e-learning or training game projects.
Yes, with important nuances. Microsoft Lync 2010 and Lync 2013 saved meeting recordings as standard WMV files in My Documents > Lync Recordings. These WMVs are standard ASF/WMV files processable by FFmpeg. Skype for Business 2015 and 2016 also saved recordings in WMV. However, Microsoft Teams (launched in 2017 as successor to Lync/Skype for Business) does NOT use WMV: Teams saves recordings in Microsoft Stream or SharePoint as MP4 files. If you have Teams recordings, the format is already MP4. The WMV files you are likely to have are from the Lync/Skype for Business era (2010–2019) or generated by Windows Media Encoder.
Convert WMV to OGG: Windows corporate audio to the free Vorbis format
Windows Media Video (WMV) and its associated codec ecosystem (WMA for audio, VC-1 for video) was the dominant format in the Microsoft corporate environment throughout the first and second decades of the 21st century. Microsoft Lync 2010, launched as the successor to Office Communicator, introduced the ability to record video meetings directly in WMV, establishing this format as the standard meeting recording file in millions of companies using the Microsoft ecosystem until Teams replaced it starting in 2017. In parallel, Windows Media Encoder — distributed free as part of Windows XP and Vista — was the standard tool for capturing webinars, internal training tutorials, and product demos as WMV. The result is a massive corpus of corporate audiovisual material in WMV containing decades of institutional knowledge: internal training, process documentation, historical executive meetings, and product presentations. Converting the audio from this material to OGG Vorbis enables repurposing it on modern e-learning platforms, knowledge management systems, and free software projects without the license restrictions of the Windows Media ecosystem.
OGG Vorbis was designed by the Xiph.Org Foundation (founded in 1994 by Monty Montgomery) as a direct response to the patent restrictions of the MP3 format. The Vorbis I specification was published in July 2002, and the codec reached stable status with version 1.3.3 in 2014. The technical architecture of Vorbis is based on the MDCT (Modified Discrete Cosine Transform), spectral modeling through LSP (Line Spectral Pairs) linear prediction, and vector quantization via codebooks for residue encoding. At the perceptual level, Vorbis implements a psychoacoustic model applying simultaneous and temporal masking to remove auditorily imperceptible information, conceptually similar to MP3's but technically independent and free of Fraunhofer patents. The Vorbis quality scale (-1 to 10) generates variable bitrates from approximately 45 kbps (quality -1) to 500 kbps (quality 10), with the 4–6 range (128–192 kbps) universally recognized as transparent for voice and pop music audio.
Convertir.ai performs the WMV-to-OGG conversion entirely in the browser using FFmpeg.wasm. The technical process involves: opening the ASF (Advanced Systems Format) container, Microsoft's container format underlying both WMV and WMA, documented in the Microsoft Advanced Systems Format Specification v01.20.05 (June 2010); demultiplexing the WMA audio stream from the ASF container, separating it from the VC-1 video stream; decoding the WMA bitstream using libavcodec's WMA decoder (implementing WMAv1, WMAv2, WMA Pro, and WMA Lossless variants); converting the decoded PCM to 32-bit float internally to preserve dynamics before re-encoding; encoding the PCM to OGG Vorbis using libvorbis (the Xiph.Org Foundation's reference implementation) at quality level 6 by default (approximately 192 kbps variable, transparent quality for voice and e-learning content); encapsulating in the OGG container with Vorbis identification headers and comment metadata tags. The resulting OGG is compatible with any modern player on Linux, Android, Firefox, Chrome, and game engines like Unity or Godot without additional plugins.