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Need help?How to Convert WMV to WEBA Online
- Upload Your WMV File: Drag and drop or click "+ Add Files" to select one or more.wmv clips. Batch is supported; the audio track is extracted from each and the video stream is discarded.
- Pick Audio Codec and Quality Preset: Default codec for.weba output is Opus, the modern WebM audio codec (Vorbis is also valid inside the WebM container). Set Quality Preset to Highest, Very High, High, Medium, Low, or Lowest — Highest maps to the upper end of the codec's bitrate range, Lowest favors file size.
- Fine-tune Bitrate, Sample Rate, Channels, or Trim (Optional): Override with Constant Bitrate or Custom Bitrate (Opus supports 6 to 510 kbps; Vorbis usually 45 to 500 kbps), set Audio Sample Rate (8000-48000 Hz for Opus; 8000-192000 Hz for Vorbis), switch Audio Channel between Original, Mono, or Stereo, or use Trim to keep only a start/duration window.
- Convert and Download: Click Convert. Files are uploaded over an encrypted connection, processed on our servers, and deleted automatically after a few hours — no sign-up, no watermark, never shared.
Why Convert WMV to WEBA?
WMV is Microsoft's video container (ASF) typically carrying a WMA audio track. WMA decoders are not bundled with most non-Windows browsers, and the WMV/ASF stack itself has been dropped from Safari, Chrome, and Firefox media pipelines. WEBA is the audio-only variant of WebM — the same Matroska-based container Google ships across HTML5 <audio> elements — and it almost always carries Opus or Vorbis, both royalty-free codecs. Converting WMV to WEBA strips the video stream and re-encodes the audio into a format the open web actually plays.
- HTML5 audio without plugins —
<audio>elements with a.weba source play in Chrome, Firefox, Edge, and Opera without WMP, Silverlight, or a vendor extension. Useful for podcast pages, course modules, and product demos pulled from a screen-capture WMV. - Trim a voice clip out of a screen recording — Screen-capture tools on older Windows machines often save.wmv. Extract just the narration into.weba, drop it into a Lottie page or a tutorial step, and skip the heavy video payload.
- Smaller files than WMA at the same perceived quality — Opus at 64 kbps is roughly comparable to WMA at 96-128 kbps for speech, and Opus has a far lower licensing footprint for distribution.
- Open-source pipelines — FFmpeg, GStreamer, Audacity (via FFmpeg), and most Linux audio stacks treat.weba/Opus as a first-class citizen, while WMA/WMV decoding requires proprietary or reverse-engineered codec packs.
- WebRTC and real-time alignment — Opus is the mandatory audio codec for WebRTC (RFC 7874). Keeping archived audio in the same codec your real-time stack uses avoids transcoding when you replay clips into a live session.
WMV (WMA inside) vs WEBA (Opus inside) — Format Comparison
| Property | WMV (.wmv) | WEBA (.weba) |
|---|---|---|
| Container | ASF (Advanced Systems Format) | WebM (Matroska subset) |
| Typical audio codec | WMA v2 (WMAv2) | Opus (default) or Vorbis |
| Bitrate range | WMA: ~5-320 kbps | Opus: 6-510 kbps; Vorbis: ~45-500 kbps |
| Sample rate ceiling | WMA: 48 kHz | Opus: 48 kHz; Vorbis: 192 kHz |
| Royalty-free | No (Microsoft-licensed) | Yes (BSD / IETF RFC 6716) |
HTML5 <audio> support |
Not supported in Chrome, Firefox, Safari | Chrome, Firefox, Edge, Opera; Safari 14.1+ for Opus-in-CAF/MP4, partial WebM |
| Native macOS / Linux playback | Requires third-party codec | Native via system or browser |
| Carries video | Yes | No (audio-only WebM variant) |
Opus Quality Preset Quick Guide (for WEBA output)
| Preset | Approx. bitrate | Best for |
|---|---|---|
| Lowest | 24-32 kbps | Mono voice notes, low-bandwidth podcasts |
| Low | 40-64 kbps | Single-speaker narration, audiobook chapters |
| Medium | 80-96 kbps | Spoken-word with music beds, screencast audio |
| High | 128 kbps | Music demos, mixed content, default for streaming |
| Very High | 160-192 kbps | Music with critical detail, archival web masters |
| Highest | 256-320 kbps | Near-transparent music; ceiling before diminishing returns |
Frequently Asked Questions
Will the converter keep video, or do I only get the audio track?
You only get the audio. WEBA is the audio-only variant of the WebM container — there is no video stream in the output by design. If you need to keep the picture, convert to WMV to WebM instead, which keeps both streams.
Should I pick Opus or Vorbis for the WEBA file?
Pick Opus unless you have a specific compatibility reason to use Vorbis. Opus is newer (IETF RFC 6716, 2012), is mandatory in WebRTC, supports 6-510 kbps with very low latency, and matches or beats Vorbis at every bitrate above ~32 kbps. Vorbis is fine for legacy Firefox or Chrome builds older than 2013, but those are not browsers any user is still running.
My WMV is silent or the audio is missing after conversion. Why?
The WMV container may carry an unusual audio codec (Sipro ACELP.net is the historical edge case, but some old screen recorders write WMV with no audio stream at all). Open the.wmv in VLC and check Tools > Codec Information — if there is no audio stream listed, there is nothing to extract. If the codec is exotic, try a different source recording.
Does WEBA play on iPhone or Safari?
Safari does not play.weba files via HTML5 <audio> out of the box. iOS Safari and macOS Safari prefer.m4a (AAC) or.caf containers. If you need universal mobile playback, convert to WMV to M4A or WMV to MP3 instead. WEBA is the right choice when your target is Chrome, Firefox, Edge, or any Chromium-based browser including Android Chrome.
What is the difference between.weba and.webm?
Same container, different convention..webm typically signals "this file contains video (and optionally audio)" while.weba signals "audio only — no video stream is present." Some servers and players are stricter about MIME types (audio/webm vs video/webm); using the.weba extension makes the intent obvious to both browsers and pipelines. The byte structure is otherwise identical.
Why convert at all — can't I just rename.wmv to.weba?
No. WMV uses the ASF container with WMA audio; WEBA uses the WebM (Matroska) container with Opus or Vorbis. They are entirely different bitstreams and headers. Renaming the file extension will produce a broken file that no player can decode. You need an actual transcode, which is what this tool does.
What happens if my WMV's WMA bitrate is higher than the Opus preset?
The converter re-encodes — it does not just remux. If your source WMA is 320 kbps and you pick Medium (80-96 kbps Opus), the output will be smaller and will lose some detail, but Opus is efficient enough at 96 kbps that most listeners cannot distinguish it from the original WMA for speech and most music. For archival, pick Very High or Highest.
Can I trim out a section without re-encoding the whole file?
Use the Trim controls to set a start time and duration. The trim happens during the same encode pass, so you do not pay an extra quality hit — and the output only contains the slice you asked for. Useful for pulling a single quote or a chorus out of a long screen recording.
Is there a file size or file count limit?
There is no enforced file count for batches. Free uploads are limited to 400 MB per file (1 GB on Basic, 4 GB on Pro). For sources larger than that, convert in smaller segments or use the desktop encoder of your choice.