ChangeMyFile - Free Online File ConverterChangeMyFile
Trusted by thousands of users worldwide

Convert AVI to MP3 - Extract Audio from Video Instantly

Pull the audio track from any AVI video. Get MP3 files ready for any device.

Step 1: Upload your files

You can also Drag and drop files.

Step 2: Choose format
Step 3: Convert files

Read Terms of use before using

Share:fXin@
500+ Formats
Lightning Fast
100% Secure
Always Free
Cloud Processing

Extract Audio from AVI Videos

You have an AVI video file but only need the audio. Maybe it's a music video, a recorded lecture, an interview, or a podcast episode saved in video format. Converting AVI to MP3 extracts just the audio track, giving you a file that's smaller, more portable, and plays on any music player or phone.

AVI files are video containers that have been around since 1992. They're still common for downloaded videos, screen recordings, and archived media. The MP3 format has been the universal audio standard for even longer, supported by every device and application that plays audio.

How to Convert AVI to MP3

  1. Upload your AVI file - Drag and drop or click to select your video
  2. Confirm MP3 output - MP3 is selected as the audio extraction format
  3. Download your audio - Get your MP3 file ready for any player

The entire process takes seconds for most files. In our testing, a typical 100MB AVI video converts to MP3 in under 30 seconds, depending on your internet connection for the initial upload.

Why Extract Audio from Video?

There are many practical reasons to convert video to audio-only:

  • Save storage space - A 500MB AVI video might produce a 5MB MP3. That's a 99% size reduction when you only need the audio
  • Listen anywhere - MP3 plays on phones, car stereos, fitness devices, and smart speakers that don't support video
  • Create playlists - Add extracted audio to your music library alongside regular songs
  • Background listening - Listen to lectures or podcasts without the video draining your battery
  • Archive efficiency - Store audio content without the overhead of video data you don't need

Audio Quality After Conversion

The quality of your extracted MP3 depends entirely on the audio quality in the original AVI file. We extract and convert the existing audio track without re-encoding it unnecessarily, preserving the original quality as much as possible.

In our testing with various AVI sources, audio quality remained consistent with the source material. If your AVI has high-quality audio (from a DVD rip or professional recording), your MP3 will sound great. If the original audio was low quality, the MP3 will reflect that - we can't enhance what isn't there.

MP3 uses lossy compression, which means some audio data is discarded to reduce file size. For most listening purposes - music, podcasts, lectures - this compression is imperceptible. If you need lossless audio preservation, consider converting AVI to WAV instead.

Common Use Cases

Music Video Collections

You have music videos but want the songs in your regular music library. Extract the audio and add it to your playlist without the video taking up space.

Recorded Lectures and Presentations

University lectures, webinars, and training videos are often more practical as audio files. Listen during commutes without watching a screen.

Interview and Podcast Archives

Interviews recorded as video can be repurposed as podcast episodes. Extract the audio and distribute through audio platforms.

Language Learning Content

Video lessons for language learning are often better consumed as audio for repetitive listening practice. Convert once, listen repeatedly.

Screen Recordings with Narration

Software tutorials or gameplay videos with commentary can be extracted for audio-only consumption when the visual isn't essential.

AVI vs MP3: Understanding the Formats

AVI (Audio Video Interleave) is a multimedia container format developed by Microsoft in 1992. It stores both video and audio streams together in a single file. AVI files can be quite large because the format predates modern compression techniques, though many AVI files use internal codecs like DivX or XviD.

MP3 (MPEG Audio Layer III) is an audio-only format that revolutionized digital music. It compresses audio by removing frequencies that most humans can't hear anyway. A typical MP3 file is about 1/10th the size of the equivalent uncompressed audio.

When you convert AVI to MP3, you're essentially discarding the video stream entirely and keeping only the audio. This is extraction, not encoding - the audio that exists in your AVI is what you get in your MP3.

When to Choose a Different Format

MP3 is the right choice for most audio extraction needs, but alternatives exist for specific requirements:

  • WAV - Choose AVI to WAV when you need uncompressed audio for editing in audio software like Audacity or professional DAWs
  • FLAC - For archival purposes where you want lossless compression, FLAC preserves every bit of the original audio
  • AAC - If your destination is Apple devices, AAC offers slightly better quality than MP3 at the same file size
  • OGG - Open-source alternative to MP3 with good compression, though less universally supported

For casual listening, sharing, and maximum compatibility, MP3 remains the best choice. It's been the standard for 30 years for good reason.

Batch Conversion for Multiple Files

Have a folder of AVI files that all need audio extraction? Upload multiple files and convert them all at once. This is particularly useful for:

  • Converting entire video albums to audio playlists
  • Processing recorded lecture series
  • Archiving video collections as audio-only files
  • Preparing content for podcast distribution

Each file converts independently, so you can download them individually or wait for all to complete.

Works on Any Device

This converter runs entirely in your browser. No software to download, no plugins to install. Use it on:

  • Windows, Mac, Linux, or Chromebook
  • Chrome, Firefox, Safari, or Edge
  • iPhone, iPad, or Android devices

Your files process locally when possible, which means faster conversion and better privacy. Large files may use server processing for speed.

Related Conversions

Depending on your source material and goals, these related tools might be useful:

  • AVI to MP4 - Convert your video to a more modern format while keeping both audio and video
  • MP4 to MP3 - Extract audio from MP4 videos using the same process
  • MP3 Converter - Convert other audio formats to MP3 for universal playback

Pro Tip

If your AVI contains music from a live recording or concert video, extract to WAV first for archival, then convert to MP3 for daily listening. This preserves a lossless copy while giving you a portable version.

Common Mistake

Expecting better audio quality than the source. If your AVI was downloaded at low quality or heavily compressed, the extracted MP3 will reflect those limitations. We extract what exists - we cannot enhance source audio.

Best For

Perfect for creating audio-only versions of video content: music videos for your playlist, lectures for commute listening, or reducing storage by keeping only the audio from video recordings you don't need to watch.

Not Recommended

Don't use if you need to preserve the video. AVI to MP3 permanently discards all video data. If you might want the video later, convert to MP4 first for a smaller video file, then extract audio separately.

Frequently Asked Questions

The extracted MP3 will match the quality of the audio track in your original AVI. We preserve the source quality during extraction. If the original audio was high quality, your MP3 will sound great. MP3 does use lossy compression, so some data is discarded, but this is typically imperceptible for normal listening.

Conversion typically takes 10-60 seconds depending on file size and your internet connection. In our testing, a 100MB AVI file converts in about 25-30 seconds. Larger files naturally take longer to upload and process.

Yes, as long as the AVI file contains an audio track. Some AVI files (like silent screen recordings) may not have audio to extract. If your AVI has audio, we can extract it regardless of the video codec used.

We convert to high-quality MP3 (typically 192-320 kbps) to preserve the audio from your source file. The final quality depends on what audio quality existed in the original AVI. We cannot enhance low-quality source audio.

AVI files contain both video and audio data, with video typically comprising 90-95% of the file size. When you extract only the audio, you're discarding all that video data. A 500MB AVI might produce a 5-15MB MP3 depending on audio length and quality.

Yes, batch conversion is supported. Upload multiple AVI files and convert them all to MP3 in one session. Each file processes independently, so you can download completed files while others are still converting.

We support AVI files up to several gigabytes in size. Very large files may take longer to upload and process. For extremely large files, ensure you have a stable internet connection during the upload.

Yes. MP3 is universally supported on all smartphones, tablets, and virtually every device that plays audio. Your extracted MP3 will work on iPhone, Android, car stereos, smart speakers, and dedicated music players.

Use MP3 for listening, sharing, and storage efficiency - it's compressed but sounds great. Use WAV only if you plan to edit the audio in professional software or need completely uncompressed audio. MP3 is typically 10x smaller than WAV.

For smaller files, processing happens locally in your browser for maximum privacy. Larger files may use server-side processing for speed. In either case, files are processed and not stored permanently.

Yes. The converter works in mobile browsers including Safari on iPhone and Chrome on Android. No app installation required - just visit the page and upload your AVI file to extract the audio.

Most AVI files have a single audio track which we extract automatically. If your AVI contains multiple audio tracks (like different languages), we extract the primary track. For selecting specific tracks, specialized video editing software may be needed.

AVI Conversions & Related Converters

Quick access to the most commonly used file conversions.