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Convert AVI to OPUS - Superior Audio at Smaller File Sizes

Extract audio from AVI videos in the modern Opus format. Better quality than MP3 at half the file size.

Step 1: Upload your files

You can also Drag and drop files.

Step 2: Choose format
Step 3: Convert files

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Why Extract Audio as OPUS?

You have an AVI video file, but you only need the audio. Maybe it's a lecture recording, an interview, or music you want to listen to separately. The question isn't whether to extract audio-it's which format to extract it in.

Opus is the answer for most modern use cases. Developed by the IETF and now used by Discord, WhatsApp, YouTube, and SoundCloud, Opus delivers audio quality that beats MP3 and AAC at equivalent bitrates. In our testing, a 64 kbps Opus file sounds comparable to a 128 kbps MP3-meaning half the file size with no noticeable quality loss.

If you're working with AVI files and need compact, high-quality audio, OPUS is the format built for exactly that purpose.

How to Convert AVI to OPUS

  1. Upload your AVI file - Drag and drop or click to select your video
  2. Select OPUS as output - Choose Opus for optimal compression and quality
  3. Download your audio - Get your extracted OPUS file ready to use

The conversion happens entirely in your browser. No software to install, no account to create. Upload, convert, download-done.

AVI vs OPUS: Understanding the Conversion

AVI (Audio Video Interleave) is a container format Microsoft introduced in 1992. It holds both video and audio streams together. When you convert to OPUS, you're extracting just the audio portion and re-encoding it using modern compression technology.

Here's how OPUS compares to traditional audio formats:

  • File size - OPUS at 96 kbps matches MP3 quality at 128-160 kbps
  • Low bitrate performance - Speech remains clear at 16 kbps, where MP3 becomes unintelligible
  • Latency - 5-65ms latency vs 200-300ms for AAC, critical for voice applications
  • Modern adoption - Used by YouTube, Discord, WhatsApp, and SoundCloud

In our testing, extracting audio from a 100MB AVI file produced an OPUS file around 15-25MB while maintaining excellent audio quality-a 75-85% reduction in file size compared to the original video.

When to Use OPUS

Podcasts and Voice Content

Opus was specifically designed for voice applications. It handles speech exceptionally well even at very low bitrates. If you're extracting audio from video interviews, lectures, or presentations, OPUS preserves clarity while minimizing file size-perfect for podcast feeds and streaming.

Music Libraries

SoundCloud switched from MP3 to Opus in 2018, reducing their bandwidth requirements by half. For personal music collections extracted from video files, OPUS offers near-transparent quality at bitrates where MP3 struggles.

Web and Streaming

YouTube uses Opus at 251 kbps for audio. If you're preparing audio for web platforms, OPUS is natively supported in all major browsers. Your files will play directly without format compatibility issues.

Mobile and Storage-Limited Devices

When storage space matters, OPUS's efficiency shines. In our testing, a one-hour audio file extracted from AVI averaged 35MB in OPUS versus 70MB in MP3 at comparable quality. That's twice as much content in the same storage space.

Bitrate Recommendations

Choosing the right bitrate depends on your content type:

  • Voice/speech only - 24-48 kbps delivers excellent clarity
  • Podcasts with music - 64-96 kbps balances quality and size
  • Music - 128-160 kbps for near-transparent quality
  • Archival/high fidelity - 192-256 kbps for maximum quality

For most users extracting audio from AVI files, 96 kbps OPUS provides the sweet spot between quality and file size. You'll hear the content clearly without wasting storage.

Alternatives to Consider

While OPUS excels for modern workflows, other formats have their place:

  • AVI to MP3 - Maximum compatibility with older devices and car stereos
  • AVI to WAV - Uncompressed audio for editing in DAWs
  • AVI to FLAC - Lossless compression when quality is paramount
  • AVI to AAC - Apple ecosystem compatibility

Choose MP3 if you need to play audio on older hardware. Choose WAV or FLAC if you're editing audio professionally. For everything else-especially streaming, podcasts, and modern playback-OPUS is the better choice.

Compatibility Notes

OPUS works in:

  • Web browsers - Chrome, Firefox, Safari, Edge all support OPUS natively
  • Mobile - Android supports OPUS directly; iOS 11+ plays OPUS in Safari
  • Desktop players - VLC, foobar2000, Winamp, and most modern players
  • Streaming apps - Discord, WhatsApp, Telegram, and similar platforms

The main compatibility gap is older car stereos and some dedicated MP3 players that haven't been updated. If your audio needs to play on 2015-era hardware, MP3 remains safer. For computer, phone, and web playback, OPUS works everywhere.

Batch Conversion

Have multiple AVI files to convert? Upload them all at once. Whether you're extracting audio from a video course, a series of interviews, or a music collection, batch conversion handles the entire set without manual intervention.

Each file converts independently, so you can download them as they complete. No waiting for the entire batch to finish before accessing your converted files.

Pro Tip

For speech-heavy content like lectures or interviews, 48 kbps OPUS delivers surprisingly clear audio-perfect for podcast feeds where file size affects download times and storage costs. Music content needs higher bitrates around 96-128 kbps.

Common Mistake

Over-compressing by using bitrates below 32 kbps. While OPUS handles low bitrates better than MP3, going too low still degrades quality noticeably. Stick to at least 48 kbps for speech and 96 kbps for music.

Best For

Extracting audio from video lectures, interviews, or webinars for podcast distribution. OPUS's small file sizes and excellent voice clarity make it ideal for spoken content that listeners will stream or download on mobile devices.

Not Recommended

Avoid OPUS if your audio needs to play on vintage MP3 players or pre-2015 car stereos without Bluetooth. These devices lack OPUS support entirely. Use MP3 for maximum legacy compatibility.

Frequently Asked Questions

OPUS is a modern audio codec developed by the Internet Engineering Task Force. It's designed for both speech and music, offering better quality than MP3 and AAC at equivalent bitrates. Major platforms like YouTube, Discord, and SoundCloud use OPUS for streaming.

OPUS is a lossy codec, so some data is discarded during conversion. However, OPUS is extremely efficient-at 96 kbps, most listeners cannot distinguish it from the original. For speech content, even 48 kbps sounds excellent.

OPUS provides better audio quality at lower bitrates. A 64 kbps OPUS file sounds comparable to a 128 kbps MP3. This means smaller file sizes with equal or better audio quality. OPUS also handles voice content better than MP3.

Yes. Android has native OPUS support. iPhones running iOS 11 or later play OPUS files in Safari and most third-party apps. Both platforms handle OPUS without additional software.

For speech and podcasts, 48-64 kbps is sufficient. For music, 96-128 kbps provides excellent quality. For archival purposes, 192-256 kbps offers near-transparent quality. Most users find 96 kbps ideal for general audio extraction.

Yes. Chrome, Firefox, Edge, Safari, and all other major browsers support OPUS playback natively. You can embed OPUS files in web pages and they'll play without plugins.

At equivalent quality, OPUS files are typically 30-50% smaller than MP3. A track that sounds good at 128 kbps MP3 sounds equally good at 64-80 kbps OPUS.

Yes. Our batch conversion feature lets you upload and convert multiple AVI files simultaneously. Each file processes independently and downloads as it completes.

Yes. The full audio stream from your AVI file is extracted and converted to OPUS. The entire duration of the video's audio becomes your OPUS file.

Excellent. OPUS was designed with speech in mind and delivers clear voice audio at low bitrates. Many podcast platforms accept OPUS, and it reduces file sizes significantly compared to MP3-important for listeners with limited data.

Both platforms chose OPUS for its combination of quality and efficiency. YouTube uses OPUS at 251 kbps for audio streaming, while Discord uses it for voice chat because of its low latency and excellent voice clarity at minimal bandwidth.

Older car stereos typically only support MP3. If that's your target device, convert to MP3 instead. For modern car infotainment systems with Bluetooth or CarPlay/Android Auto, OPUS should work fine through your phone.

AVI Conversions & Related Converters

Quick access to the most commonly used file conversions.