WebM to WEBA Converter

How to Convert WebM to WEBA Online

1. Upload Your WebM File: Drag and drop or click "Add Files" to select your .webm video. Only .webm is accepted on this page; batch upload is supported.
2. Pick Audio Codec and Quality Preset: Under Audio Codec, the default is AAC — but for a spec-compliant .weba file, switch to Opus (recommended) or Vorbis, since the WebM container officially permits only those two audio codecs. Then set Quality Preset (Highest through Lowest), Custom Bitrate (any kbps value), Constant Bitrate (32-384 kbps presets), Variable Bitrate, target file size as a percentage (1-100%), or an exact size in MB/KB.
3. Audio Channel, Sample Rate, and Trim (Optional): Set Audio Channel to Original, Mono, or Stereo. Pick an Audio Sample Rate between 8000 Hz and 48000 Hz (44100 Hz or 48000 Hz are typical for music). Under Trim, enter a Start Time and Duration in seconds or HH:MM:SS.sss to extract just a clip.
4. 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 WebM to WEBA?

WebM is Google's open, royalty-free container introduced in May 2010 for HTML5 video, with Opus audio added in 2013. WEBA (.weba) is the audio-only convention for the same container — the WebM Project itself notes the extension is de-facto rather than officially blessed, but Firefox, Chrome, and several download tools use it to flag audio-only WebM. The official MIME type is audio/webm either way. Strip the video track when you only need the soundtrack:

• Saving podcast or interview audio — A WebM screen recording or YouTube download often carries Opus audio at 96-160 kbps. Extracting to .weba keeps the original Opus stream losslessly and drops the VP9 video, typically cutting file size by 80-95%.
• Web <audio> element delivery — Modern browsers (Chrome, Firefox, Edge, Opera, and Safari 16+) play audio/webm natively, so a .weba served from your CDN works without transcoding to MP3.
• Lecture and meeting recordings — Zoom, Google Meet, and Jitsi often export WebM. Pulling the audio to .weba at 64 kbps Opus is plenty for spoken word and small enough to email under most 25 MB caps.
• Music sampling and DJ prep — Extract the audio bed from a music video and keep Opus, which the official Opus codec listening tests show outperforming MP3, Vorbis, and LC-AAC at the 64-96 kbps range.
• Voice-note archiving — Browser-recorded audio (MediaRecorder API) commonly outputs audio/webm; codecs=opus. Saving as .weba keeps the original encoding intact for archival.
• Bandwidth-sensitive embeds — .weba at 32-48 kbps Opus delivers intelligible speech for accessibility tracks at a fraction of an MP3's size.

WebM vs WEBA — Container and Track Comparison

Audio Codec and Bitrate Guide

Frequently Asked Questions

Is.weba an official WebM file extension?

No. Per the WebM Project's discussion list, .weba is a community convention rather than an officially endorsed extension — the team noted that the term had been trademarked elsewhere and recommended .webm as the canonical extension for audio-only files. In practice, Firefox, several browser download dialogs, and many converters use .weba to distinguish audio-only streams. The official MIME type either way is audio/webm.

Which audio codec should I pick — Opus, Vorbis, or AAC?

Pick Opus unless you have a specific reason not to. The WebM container officially permits only Vorbis or Opus audio, and Opus generally outperforms both Vorbis and AAC across the 32-192 kbps range. Vorbis is a fallback if a downstream tool refuses Opus. AAC is exposed in the dropdown but produces a non-standard .weba that some players will reject — for an AAC track, use WebM to M4A or WebM to AAC.

Will a.weba file play in Safari?

Safari added WebM video playback in version 16.0 (September 2022) and iOS Safari 17.4 (March 2024). audio/webm follows the same support timeline. For pre-Safari 16 / pre-iOS 17.4 reach, convert to WebM to MP3 instead, since MP3 is universally supported.

Why is my output so much smaller than the input WebM?

Because the entire VP8/VP9/AV1 video track is discarded. Video usually accounts for 90%+ of a WebM's bitrate; the audio stream alone is typically 64-160 kbps. A 100 MB 5-minute WebM at 1080p commonly shrinks to 4-6 MB once only the audio remains.

Can I trim the audio while converting?

Yes. Open the Trim section, set Start Time and Duration in seconds or HH:MM:SS.sss, and the converter extracts just that slice. This is the fastest way to grab a clip from a long lecture or stream recording without separate editing.

Does the conversion re-encode the audio if I pick the same codec as the source?

Yes — xconvert always re-encodes through the codec and bitrate you choose, even if the source is already Opus. To avoid generation loss when the source is already Opus, set the bitrate equal to or higher than the source bitrate (or use Quality Preset Highest). For lossless re-muxing, you'd need a -c:a copy style tool like ffmpeg; xconvert's converter is encode-based.

What sample rate should I use?

Match the source. For Opus, the codec internally resamples to 48000 Hz regardless of input, so 48000 Hz is the natural choice. Use 44100 Hz if the file is destined for CD-style workflows. Sample rates below 24000 Hz are only useful for narrowband speech.

How does.weba compare to.ogg for audio-only delivery?

Both are open, royalty-free, and can carry Vorbis or Opus. .ogg uses the Ogg container (Xiph.Org); .weba uses the Matroska-derived WebM container (Google). For HTML5 <audio>, browser support is essentially overlapping. Pick .weba when staying inside the WebM ecosystem (e.g., paired with a WebM video stream); pick WebM to OGG when targeting toolchains that prefer Ogg.

Is there a file size limit?

No fixed cap is enforced. Files are uploaded over an encrypted connection, processed on xconvert's servers, and deleted automatically after a few hours. For very large files (multi-GB), trimming to the needed segment first is faster.