M2TS to OPUS Converter

Extract Opus Audio from M2TS Online

This tool pulls the audio track out of an M2TS file — a Blu-ray rip or an AVCHD camcorder clip — and saves just the sound as Opus, discarding the H.264 or VC-1 video. Opus is the modern, royalty-free codec the web and messaging apps lean on, and it holds quality at a smaller size than MP3 or AAC. The catch worth knowing up front: it's brilliant per kilobit but not universally playable on older hardware, and a Blu-ray's 5.1 or 7.1 mix folds down to stereo here.

How to Convert M2TS to Opus

1. Upload Your M2TS File: Drag and drop your .m2ts (Blu-ray) or .mts (camcorder) clip onto the page, or click "+ Add Files". Both are the same BDAV container — .MTS is just the 8.3 short-filename form a camcorder writes to its card — so the extraction is identical either way. Queue several clips to extract them in one batch with the same settings.
2. Pick a Quality Preset: Open Advanced Options and choose a Quality Preset under File Compression — Highest down to Lowest — or switch to Custom Bitrate, Constant Bitrate, or Variable Bitrate to set an exact rate. Because Opus is efficient, 128-160 kbps comfortably holds a stereo mix and 32-64 kbps stays clean for speech.
3. Set Audio Channel or Trim (optional): Leave Audio Channel and Audio Sample Rate on "Original" to copy what the source recorded, or downmix to mono for a smaller file. Use Trim to keep only part of a long recording.
4. Convert and Download: Click "Convert" and download your .opus file individually or as a ZIP. No sign-up, no watermark.

What Your M2TS Holds, and What Reaches the Opus File

The M2TS container (BDAV, based on ISO/IEC 13818-1) can wrap several different audio codecs depending on where the file came from. Which one you have decides whether the Opus is a clean encode or a lossy-to-lossy transcode.

Frequently Asked Questions

Does this keep the video, or just the audio?

Just the audio. This is an extraction: the H.264, MPEG-2, or VC-1 video inside your M2TS is discarded and only the soundtrack is written out as an Opus file. If you want to keep the picture too, convert M2TS to MP4 instead, which re-encodes both the video and audio into a single playable file.

Will Opus sound better than the audio already in my M2TS?

It depends on which codec the M2TS holds, and the honest answer is usually no. AVCHD camcorder clips and many Blu-ray tracks carry Dolby AC-3 or DTS, which are already lossy — so extracting to Opus is a lossy-to-lossy transcode that can match but not exceed the source. Where a Blu-ray rip carries an uncompressed LPCM track or a lossless Dolby TrueHD / DTS-HD Master Audio track, extracting that to Opus is a clean first-generation encode, the same quality you'd get from a WAV master. Either way the real win is efficiency: Opus packs the same perceived quality into a much smaller file. Keep the bitrate near the source to avoid adding noticeable new loss.

Can the Opus output keep my Blu-ray's 5.1 or 7.1 surround sound?

Not as surround here. Opus the codec genuinely supports multichannel audio — its Ogg mapping in RFC 7845 defines 5.1 and 7.1 layouts — but that is a codec capability, not a guarantee from this tool. The Audio Channel control offers Original, mono, and stereo, so a Blu-ray's 5.1 or 7.1 mix is most reliably handled as a stereo downmix, which loses the spatial separation between channels. If keeping every channel matters, extract to AAC instead, where multichannel is the supported path. For an ordinary recording you'll listen to in stereo, Opus at a healthy bitrate is an excellent finish.

Will the .opus file play on my phone, car stereo, or smart TV?

Usually on phones, less reliably on older car and TV hardware. In our testing, every current browser plays Opus (Chrome 33+, Firefox 15+, Edge 14+; Safari has partial support and plays it through the system audio stack, with iOS Safari fully supporting it from 18.4). Android has recognized the bare .opus extension since Android 10 — earlier versions play it inside .ogg, .webm, or .mkv. The weak spots are a long tail of pre-2018 devices: some legacy car infotainment systems and older smart TVs never added Opus. If you need guaranteed playback on old hardware, extract to MP3 instead, which plays virtually everywhere. For the same camcorder workflow with this codec, AVCHD to Opus covers extracting straight from the card's stream files.

How are my files handled, and is there a size limit?

Your M2TS file is uploaded over an encrypted connection, processed on our servers, and deleted automatically a few hours after conversion — no sign-up, no watermark, never shared or made public. The main practical limit is upload size and time rather than the extraction itself: an M2TS carries full HD video alongside the audio, so a long Blu-ray title or recording can take a while to upload even though pulling out the soundtrack is quick.