MTS to WEBA Converter

MTS to WEBA Converter

MTS is the AVCHD camcorder container — H.264 video alongside a Dolby AC-3 (or, on some professional models, uncompressed LPCM) audio track. A .weba file is the opposite end of the spectrum: an audio-only WebM, holding just the sound with the video discarded. This converter extracts the audio from your MTS clip and re-encodes it into the WebM audio container, which is the format HTML5 <audio> elements, Media Source Extensions players, and web-app pipelines expect when they ask for audio/webm. If you only need a universally playable audio file, MTS to MP3 is the better target; WEBA is specifically for WebM-based web audio workflows.

AVCHD (MTS) Audio at a Glance

WEBA (audio-only WebM) at a Glance

How to Convert MTS to WEBA

1. Upload Your MTS File: Drag and drop or click "+ Add Files" to add .mts clips. Batch upload is supported — queue several and extract them in one pass with the same settings.
2. Pick Quality Preset (or Custom Bitrate): The default is the Highest Quality Preset. For precise control over the Opus encode, switch to Custom Bitrate and type a value in kbps, or use Constant Bitrate to pin a fixed step. Specific file size targets an output size directly.
3. Set Audio Channel or Trim (Optional): Leave Audio Channel on Original to mirror the source, or downmix to Mono or Stereo. A 5.1 AVCHD track folds down to stereo here, since the output offers Original, Mono, and Stereo. Use Trim to clip a start time and duration.
4. Convert and Download: Click Convert. Files are uploaded over an encrypted connection and processed on our servers — no sign-up, no watermark.

Frequently Asked Questions

Will extracting WEBA audio from an AC-3 MTS file lose quality?

Some, because it is a lossy-to-lossy step. Most AVCHD camcorders record audio as Dolby Digital (AC-3), which is already a lossy codec, so re-encoding that track to Opus inside the WebM container adds a second round of compression — you cannot recover detail the original AC-3 encode discarded. To keep the loss minimal, set Custom Bitrate at or near the source's audio bitrate (AVCHD AC-3 commonly sits around 256 or 384 kbit/s) rather than pushing it higher, which only wastes space. If your MTS came from a professional model that recorded uncompressed LPCM, the conversion is a clean first-generation Opus encode and the quality stays high.

What audio codec does the WEBA output use — Opus or Vorbis?

This converter produces Opus inside the WebM container. WebM officially supports two audio codecs, Opus and Vorbis, and adopted Opus in 2013; Opus is the modern choice because it delivers better quality per kilobit than Vorbis or MP3, especially at lower bitrates. For a WebM/audio/webm pipeline, an Opus stream is what you generally want, so there's no separate Vorbis step to manage here.

Why would I extract to WEBA instead of MP3 or WAV?

WEBA exists for WebM-native web audio. If you're feeding an HTML5 <audio type="audio/webm"> element, a Media Source Extensions player, or a build pipeline that ingests WebM segments, a .weba file drops straight in. For everything else — sharing a track, importing into a DAW, playing on a phone or in a car — MP3 is far more universal. If that's your goal, use MTS to MP3 instead. WEBA is the niche, web-specific answer, not the general-purpose one.

How is WEBA different from a bare .opus file?

Both carry Opus audio, but they're wrapped differently: a .weba puts the Opus stream inside the WebM (Matroska-based) container with the audio/webm MIME type, while a .opus file wraps the same codec in Ogg encapsulation with audio/ogg. Pick WEBA when a tool specifically expects WebM audio; pick the Ogg-Opus file otherwise. If you'd rather have the raw Opus extension, use MTS to Opus, which extracts the same audio into an Ogg-Opus .opus file.

Where will a .weba file actually play?

Native playback follows WebM container support. Chrome, Firefox, Edge, and Opera have handled WebM for years (Chrome from version 25, Firefox from 28, Edge from 79, Opera from 16). Apple was the latecomer: per caniuse, full WebM support arrived in Safari 16 on macOS and iOS 17.4, with earlier versions marked partial. So a .weba plays reliably in current desktop browsers but can stumble on older Apple devices — another reason this format makes most sense inside a controlled web pipeline rather than for general distribution.

I want to keep the video — what should I use instead?

This page extracts the audio and throws the video away, so it's the wrong tool if you want to keep the picture. To re-wrap the full AVCHD clip into a widely compatible video file, use MTS to MP4, which keeps both the H.264 video and the audio. Come here only when you genuinely want an audio-only WebM result.

How are my files handled, and how long are they kept?

Files are uploaded over an encrypted connection and processed on our servers — never shared or made public, with no sign-up and no watermark. Uploads and their converted outputs are deleted automatically a few hours after conversion, so nothing lingers on our side. In our testing, a 90-second 5.1 AVCHD clip with a 384 kbit/s AC-3 track extracted to a stereo Opus .weba at the default Highest preset in a few seconds once the upload finished.