AVI to OPUS Converter
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Supports: AVI
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Need help?Extract Opus Audio from AVI Online
AVI is a Microsoft container from 1992 that interleaves a video stream with one or more audio tracks — usually MP3, AC-3, or uncompressed PCM. This tool pulls that soundtrack out, re-encodes it to Opus, and discards the video, so you get a tiny modern audio file instead of a bulky movie. Opus (IETF RFC 6716) is the most efficient open audio codec available and sounds better than MP3 at the same bitrate, which makes it ideal when storage or bandwidth matters. Files are uploaded over an encrypted connection, processed on our servers, and deleted automatically a few hours after conversion. No sign-up, no watermark.
How to Convert AVI to Opus
- Upload Your AVI File: Drag and drop your AVI onto the page or click "+ Add Files" to add one or several at once.
- Set the Opus Bitrate: Open Advanced Options. Leave Quality Preset on Highest for a clean rip, or switch to Constant Bitrate / Variable Bitrate to lock an exact rate — 24–32 kbps is enough for voice, 96–128 kbps is transparent for music.
- Trim or Adjust Audio (Optional): Use Trim to set a start point and duration for a clip, Audio Channel to force Mono or Stereo, and Audio Sample Rate if you want to downsample from the source.
- Convert and Download: Click "Convert" and download your .opus file. No sign-up, no watermark.
Choosing an Opus Bitrate
Opus scales from 6 kbps up to 510 kbps and beats MP3 at every comparable rate — in the codec's own listening tests, Opus at 96 kbps matched an MP3 encoder running at 136 kbps. Because it switches internally between a speech mode (SILK) and a music mode (CELT), it stays clean across both voice and music where MP3 struggles at low bitrates.
| Bitrate | Sounds like | Best for | ~Size per minute |
|---|---|---|---|
| 16–24 kbps | Clear speech, tiny files | Voice notes, audiobooks | ~0.15 MB |
| 32–48 kbps | Good speech, light music | Podcasts, lectures, dialogue | ~0.3 MB |
| 64 kbps | Very good, near MP3-128 | Spoken word, casual music | ~0.5 MB |
| 96 kbps | Transparent for most music | General music, mixed content | ~0.7 MB |
| 128 kbps | Indistinguishable from source | Music you'll keep | ~0.95 MB |
If you need playback on older hardware that can't read Opus — legacy car stereos, iTunes, stock Windows Media Player — extract to AVI to MP3 instead. For an older open-codec target, AVI to OGG outputs Vorbis, which Opus was designed to succeed.
Frequently Asked Questions
Does converting AVI to Opus lose quality?
It depends on the AVI's source track. AVI usually stores MP3 or AC-3 audio, which is already lossy, so re-encoding to Opus is a lossy-to-lossy step that sheds a little fidelity — though Opus is efficient enough that at 96–128 kbps the result is transparent to almost everyone. If the AVI carries uncompressed PCM, you're going lossless to lossy, so use a higher bitrate to stay clean. The discarded video stream costs nothing on the audio side.
What plays Opus files, and what doesn't?
Opus plays natively in Chrome, Firefox, Opera, Edge, Safari (iOS 11+ and macOS High Sierra and later), VLC, Android, and apps built on WebRTC like Discord and WhatsApp. It does not play in Apple's iTunes/Music app, isn't supported by stock Windows Media Player without an extra codec, and many older car stereos and standalone players won't recognize it. For maximum compatibility, convert to MP3 instead.
Why pick Opus over MP3 for the soundtrack?
Opus delivers the same perceived quality at roughly half the bitrate of MP3, so files are smaller for the same fidelity — a clear win for storage, streaming, and voice. The catch is reach: MP3 plays on essentially every device made in the last 25 years, while Opus is limited to modern browsers and players. Choose Opus when file size matters and you control playback; choose MP3 when the file has to "just work" everywhere.
Is Opus good for ripping music, or only voice?
Both. Opus began as a voice-and-realtime codec but its CELT music layer makes it competitive with AAC and Vorbis for music too. For full songs, 96–128 kbps Opus is transparent for most listeners; push to 160–192 kbps for critical listening or complex material. There's no need to use MP3-style 320 kbps — Opus reaches the same ceiling far lower.
How small will the Opus file be?
In our testing, a standard-definition AVI with a stereo soundtrack exported at 96 kbps Opus produces about 0.7 MB per minute, so a 4-minute song lands near 2.8 MB — roughly a third the size of the same song as a 320 kbps MP3. The output size tracks the bitrate you choose, not the size of the original video, so a huge AVI still yields a small audio file.
Will the whole soundtrack be extracted, or just part of it?
The entire audio stream is captured start to finish by default. If your AVI holds more than one audio track, the primary track is used. Set a Trim start and duration only if you deliberately want a shorter clip, or run the result through the Audio Cutter afterward to keep just a section.