Cut WEBA

How to Cut WEBA Files Online

1. Upload Your WEBA File: Drag and drop or click "+ Add Files" to select a .weba file from your computer. Batch is supported — load several clips and cut each separately. Files stay on our servers; nothing is published or shared.
2. Set Start Time and Duration: Enter the start position and the length of the segment you want to keep. Both fields accept seconds (e.g., 45) or HH:MM:SS.sss (e.g., 00:01:23.500). The output is everything between start and start + duration.
3. Pick the Output Format (Optional): Keep the original WEBA container, or switch to MP3, WAV, FLAC, AAC, or OGG if you need broader device support. WEBA-out keeps the source codec — the kept audio is re-encoded at close to the source bitrate, which is inaudible in practice; switching containers re-encodes at your chosen bitrate instead.
4. Cut and Download: Click "Cut" and download. No sign-up, no watermark, no file count limit.

Why Cut a WEBA File?

WEBA is the audio-only flavour of Google's WebM container. The format ships in two flavours: audio/webm; codecs=opus (most common since 2013) and audio/webm; codecs=vorbis (older WebM exports). You usually meet WEBA when you save audio from a browser-based recorder, pull just the audio track from a YouTube WebM, or grab a voice note out of a web app — Chromium-based browsers default to WebM/Opus when capturing the MediaRecorder API. Common reasons to cut one:

• Trim a meeting or lecture recording — Browser-based recorders (Google Meet add-ons, Loom captures, Otter exports, Zoom audio-only takes) often dump WEBA. Slice out the parts you actually need before sharing.
• Make a ringtone or notification clip — Most phones won't play .weba directly; cut to a 20-30 second segment and convert to MP3 or M4A on the way out.
• Extract a quote or hook — Pull a 10-second highlight from a podcast download or a streamed interview in one step.
• Drop dead air at the start and end — Browser recordings frequently capture two or three seconds of silence before the speaker starts and after they stop. Cutting removes them cleanly.
• Splice voice notes — Web messaging apps (Telegram Web, Discord browser, WhatsApp Web voice messages) often produce Opus-in-WebM. Trim to the relevant phrase before forwarding.
• Prep a sample for editing software — DAWs and NLEs that won't import WEBA (most won't) need a cut clip in MP3, WAV, or FLAC instead.

WEBA vs Sibling Audio Formats

Property	WEBA (WebM/Opus)	OGG (Ogg/Vorbis or Opus)	MP3	M4A (AAC)
Container	WebM (Matroska profile)	Ogg	MP3 (raw frames)	MP4
Default codec	Opus	Vorbis (or Opus)	MP3 (MPEG-1 Layer III)	AAC-LC
Year introduced	2010 (WebM); Opus added 2013	1993 (Ogg); Vorbis 2000; Opus 2012	1993	1997 (AAC), MP4 1999
Royalty-free	Yes	Yes	Yes (patents expired 2017)	No (AAC licensed)
Native browser support	Chrome, Firefox, Edge, Opera, Safari 14.1+ (Opus)	Same as WEBA, minus Safari for Vorbis	Universal	Universal
Native iOS / iTunes support	No	No	Yes	Yes
Native Windows Media Player	No	No	Yes	Partial
Typical use	Web capture, browser MediaRecorder, YouTube audio streams	Game audio, Spotify (Vorbis), Wikipedia	Music files, podcasts	Apple Music, AAC podcasts

Sources for the codec and browser-support figures: MDN Web audio codec guide and Wikipedia: WebM.

Opus vs Vorbis Inside a WEBA File

Aspect	Opus	Vorbis
Bitrate range	6-510 kbps (per IETF RFC 6716)	~45-500 kbps VBR
Recommended stereo bitrate	96-128 kbps for transparent music	160-192 kbps for transparent music
Speech at low bitrates	Intelligible down to ~12 kbps	Degrades quickly below 64 kbps
Algorithmic delay	5-66.5 ms (default 26.5 ms)	~100 ms+
Standardized by	IETF (2012)	Xiph.org (2000)
Safari support in WebM	Safari 14.1+	Not supported
Modern default	Yes (Chrome's MediaRecorder default since 2017)	Legacy WebM exports

If your .weba is from any recent browser capture, it is almost certainly Opus. Older YouTube downloads or older WebM exports may still be Vorbis.

Frequently Asked Questions

Does cutting a WEBA file reduce audio quality?

The cut is sample-accurate, and the kept audio is re-encoded in the source codec at close to the source bitrate — one high-bitrate generation is inaudible in practice, but it is a re-encode, not a bit-identical copy. If you change the output format (WEBA to MP3, for example), the re-encode happens at your chosen bitrate instead, which can cost more. Keeping the defaults keeps the loss inaudible; dropping the bitrate doesn't.

Why won't my phone or media player open the .weba file?

WEBA is a web-targeted container. Native iOS, iTunes, Apple Music, most car stereos, Windows Media Player, and almost every video editor refuse it. Chrome, Edge, Firefox, Opera, and VLC will play it; Safari plays Opus-in-WebM only on macOS Big Sur (Safari 14.1) and later. If you need broader playback after cutting, set the output to MP3 or M4A — see WEBA to MP3 or WEBA to WAV.

Can I cut a WEBA file without re-encoding?

No — every cut re-encodes the kept segment, even when the output stays WEBA (the audio comes back in the source codec at close to the source bitrate). The upside is precision: the audio is decoded at your timestamps, so cuts are sample-accurate rather than snapping to 20 ms Opus packet boundaries, and one high-bitrate generation is inaudible in practice. If you plan further edits, switch the output to WAV or FLAC so the steps after this one stay lossless.

My browser saved audio as .weba — what created it?

Most likely Chrome, Edge, or another Chromium-based browser using the MediaRecorder Web API. The default MIME type for browser-recorded audio is audio/webm;codecs=opus. Loom, Vidyard, Riverside, and many "record audio in the browser" widgets emit the same. Some YouTube downloaders also save the audio-only DASH stream as .weba because YouTube serves Opus-in-WebM as the audio track for VP9 and AV1 videos.

What's the difference between WEBA and WebM?

WebM is a container that holds video plus audio (or audio only). When the WebM file has only an audio track, some tools rename the extension to .weba to make it clear no video is inside. The bytes inside a .weba file are valid WebM — renaming myfile.weba to myfile.webm will usually let stricter players open it. The reverse is also true: a .webm with no video stream is functionally identical to .weba.

Can I cut multiple WEBA files in one batch?

Yes. Upload several files; each gets its own start/duration. Download individually or as a ZIP. Useful for a folder of meeting clips or a series of voice notes.

Will cutting break Opus packet boundaries or cause clicks?

No — the audio is decoded at your cut points and re-encoded, so packet alignment is not a concern: the encoder rebuilds the stream from the exact samples you kept. A click can still occur if the cut lands mid-waveform rather than at a zero crossing; nudge the start time a few milliseconds or add a short fade in a DAW afterwards.

Should I cut as WEBA or convert to MP3 first?

Cut first, convert second — and ideally do both in the same pass. Cutting first keeps the clip in Opus at close to the source bitrate through the trim. If you only need a 30-second clip out of a one-hour file, cutting first means the eventual MP3 re-encode runs on 30 seconds of audio, not 3,600. XConvert lets you set both the trim and the output format in one job, so the file passes through the encoder once.

Can I make a WEBA file smaller after cutting?

Yes — see Compress WEBA to lower the bitrate after cutting. Opus at 64 kbps is still cleanly intelligible for speech; 96 kbps is near-transparent for stereo music. If your input is already 96 kbps Opus, there's not much room to compress further without audible loss.