Convert OGG to WMA — Free Online Tool
Convert OGG (Vorbis/Opus) audio files to WMA format using the wmav2 codec, directly in your browser with no uploads required. This conversion is ideal when you need Microsoft-compatible audio from an open-format source, re-encoding the Vorbis or Opus stream into Windows Media Audio bitstream format.
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FFmpeg Command
Copy this command to run the same conversion locally with FFmpeg on your desktop. Download FFmpeg
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Note: Browser-based encoding uses approximate quality targets. For precise CRF compression, copy the FFmpeg command above and run it on your desktop.
Estimated output:
Conversion Complete!
DownloadHow It Works
OGG files most commonly contain audio encoded with Vorbis (a lossy codec using variable-quality encoding) or Opus, both of which are incompatible with the WMA container. During this conversion, FFmpeg fully decodes the OGG audio stream to raw PCM, then re-encodes it using the wmav2 codec (Windows Media Audio version 2) at the target bitrate — defaulting to 128k. Because this is a transcode between two lossy formats, some generation loss occurs: audio quality may be marginally lower than the original OGG source. The OGG container's chapter markers and multiple audio tracks are also not carried over, since WMA does not support these features.
What Each Flag Does
| Flag | What it does |
|---|---|
ffmpeg
|
Invokes the FFmpeg binary — the open-source multimedia processing engine that handles all decoding, transcoding, and muxing for this OGG-to-WMA conversion. |
-i input.ogg
|
Specifies the input file, which is an OGG container. FFmpeg will auto-detect whether the audio stream inside is Vorbis, Opus, or FLAC and decode it accordingly before re-encoding. |
-c:a wmav2
|
Sets the audio codec to wmav2 (Windows Media Audio version 2), the standard and most widely compatible WMA codec for modern Windows software, devices, and media players. |
-b:a 128k
|
Encodes the WMA audio stream at a constant bitrate of 128 kilobits per second — a reasonable default that balances file size and audio fidelity for general music or speech content in WMA format. |
output.wma
|
Defines the output filename with the .wma extension, which tells FFmpeg to wrap the wmav2 audio stream in an ASF (Advanced Systems Format) container — the standard file format for Windows Media Audio. |
Common Use Cases
- Preparing game audio or sound effects originally distributed in OGG format for use in older Windows-based multimedia applications or tools that only accept WMA input
- Converting a music collection ripped or downloaded in OGG Vorbis format so it can be played on legacy Windows Media Player or early-generation Zune devices
- Supplying WMA audio files to a client or collaborator whose Windows-based editing or presentation workflow does not support OGG playback natively
- Converting podcast episodes or audiobooks stored in OGG format to WMA for distribution through platforms or intranet portals that mandate Microsoft audio formats
- Transforming OGG audio assets from an open-source game engine export into WMA files compatible with a DirectShow-based media pipeline on Windows
Frequently Asked Questions
Yes, some quality loss is unavoidable. OGG Vorbis and WMA are both lossy codecs, so converting between them means the audio is decoded from a compressed format and then re-compressed into a different codec — a process called transcoding. The degree of loss at 128k WMA is modest and often imperceptible for speech or casual listening, but audiophiles comparing directly to the original may notice subtle artifacts, particularly in high-frequency content. To minimize loss, use a higher WMA bitrate like 192k or 256k.
No. The OGG container supports chapter metadata, but the WMA format does not have an equivalent chapter structure. When converting, any chapter information embedded in the OGG file will be silently dropped. If chapter navigation is important to you, consider a format like M4A or MKV that supports chapters in audio contexts.
Yes. FFmpeg will detect and decode the Opus stream inside the OGG container before re-encoding it to wmav2. Opus is a high-efficiency codec that sounds excellent at low bitrates, so be aware that transcoding from Opus to WMA at 128k may produce slightly more perceptible quality loss than transcoding from a higher-bitrate Vorbis source. If your OGG file contains FLAC audio, that lossless stream will also be decoded and re-encoded to WMA without issue.
Replace the value after -b:a in the command. For example, to encode at 192 kbps, use -b:a 192k, giving you: ffmpeg -i input.ogg -c:a wmav2 -b:a 192k output.wma. Supported WMA bitrates with wmav2 include 64k, 96k, 128k, 160k, 192k, 256k, and 320k. Higher bitrates produce better audio fidelity but larger file sizes. 128k is a reasonable default for general listening.
Yes, you can substitute wmav1 by changing -c:a wmav2 to -c:a wmav1 in the command. WMA version 1 has slightly broader compatibility with hardware players and very old Windows software from the late 1990s and early 2000s. However, wmav2 is the better default choice for anything made after 2000, as it offers improved audio quality at the same bitrate and is universally supported by Windows Media Player and modern Microsoft platforms.
In most cases, yes. FFmpeg maps standard OGG Vorbis comment tags (ARTIST, ALBUM, TITLE, TRACKNUMBER, etc.) to the corresponding ASF/WMA metadata fields automatically during conversion. However, OGG supports multiple audio tracks simultaneously, which WMA does not — only the first audio track will be converted. Custom or non-standard tags from the OGG file may not have a direct WMA equivalent and could be dropped or renamed during the remapping process.
Technical Notes
The WMA container uses the Advanced Systems Format (ASF) wrapper, which natively supports only a single audio track — a notable limitation compared to OGG, which can carry multiple simultaneous audio streams. The wmav2 codec encodes at constant bitrate (CBR) as set by -b:a, in contrast to OGG Vorbis's default variable quality mode (VBR via -q:a). This means a WMA file at 128k will maintain that bitrate throughout, potentially allocating more bits than needed for simple passages and fewer for complex ones compared to OGG's perceptual quality approach. WMA files also have native DRM support in the ASF specification, though this tool does not apply any DRM. File sizes for WMA at 128k are broadly comparable to OGG Vorbis at quality level 4, though direct comparison varies by content. One practical limitation: because WMA does not support chapters, any OGG audiobooks or multi-chapter files converted here will lose their navigation structure entirely. For local desktop conversion of large files (over 1GB), the FFmpeg command shown on this page can be run directly in your terminal without any file size restriction.