Need to Convert AVI to MP3?

Try this AVI to MP3 converter online for free!

This free AVI-to-MP3 converter online can alter the format of single small files. To change AVI to MP3 in batches or work with big files, get the desktop option.

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How to convert large AVI to MP3 with Movavi Video Converter

Ben Jacklin Edited by Ben Jacklin

Sometimes when we watch a movie, we might really want to hold onto one or more pieces from the soundtrack. Of course, we can try to find them on the Web, but there is another way to get the tracks you like. You can use a music extractor: a program that can convert AVI to MP3. It will extract the soundtrack from the movie and transform it into MP3 format, so you can listen to it on any device that can playback MP3 files.

We recommend you use Movavi Video Converter. It can handle converting AVI to MP3 or any other media format with no problem. Unlike online options, it can convert AVI to MP3 with no limit on file size and quantity. Our program is very easy to work with – just follow the steps below, and your files will be converted in just a few minutes. Here’s how to convert AVI to MP3 with Movavi Video Converter.

Step 1. Install Movavi Video Converter

Download the AVI-to-MP3 converter for PC or Mac, depending on your computer’s OS. Then, launch the installation file and follow the on-screen instructions.

Step 2. Add your media

Run the program. Click the Add Media button in the main window. To convert .avi to .mp3, choose Add Video. With the desktop version, you can select several files simultaneously, which isn’t supported by the AVI-to-MP3 converter online.

How to select files for the AVI-to-MP3 conversion

Step 3. Adjust the file length

Here’s another trick unavailable if you convert AVI to MP3 online. If you don’t want the whole video or audio to be converted, you can cut out the parts you don’t want. Here’s how to do it: locate the Edit button next to the file you want to trim (on the right) and click it.

How to change the file length

A new window with the video preview will appear. Place the marker at the spot you want to cut the video and hit the Scissors icon. This will split the video into parts. Hit the Delete button to remove the unwanted segment. Repeat as needed and then click Save and Close to return to the main window.

How to delete an extra fragment before converting AVI to MP3

Step 4. Choose the output format

Now your files are ready to be processed. Go to the Audio tab and choose the MP3 group of presets. Select the option you prefer: the original bitrate or another between 128 and 320 kbps. The output format will be shown below the preset groups.

How to choose the output format in the AVI-to-MP3 converter

Step 5. Start the conversion of AVI to MP3

The last part is the simplest one. Choose the target folder for the converted files by clicking the Save to button. Hit Convert and wait for a short while until your files are ready. Now you can enjoy your favorite audio tracks anywhere!

How to convert AVI to MP3 or MP3 to AVI and save the result

AVI vs. MP3: The comparison

Comparing AVI and MP3 is problematic since the first one is a video format and the second is audio. AVI video files may contain audio encoded via the MP3 codec. To see more differences, check out the AVI vs. MP3 table below.

Comparison parameter



File extension



File type

Video with audio


Full name

Audio Video Interleave

MPEG-1 Audio Layer III or MPEG-2 Audio Layer III

Developed by


Fraunhofer Society and others

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Here’s what Movavi Content Team does to provide you with only verified information:

  • When selecting products to include in our reviews, we research both demand and popularity.

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  • When testing, we compare key characteristics, including supported input and output formats, quality loss when converting, and other significant features.

  • We study user reviews from popular review platforms and make use of this information when writing our product reviews.

  • We collect feedback from our users and analyze their opinions of Movavi software as well as products from other companies.

Frequently asked questions

How to convert a large AVI to MP3?

To convert a large AVI file, it’s better to use a desktop application: uploading a big video file takes too much time, so online converters tend to limit the size of the files you can upload. For high-speed desktop conversion, try Movavi Video Converter:

  1. Download, install, and launch the software.
    Get Movavi Video Converter for Windows
    Get Movavi Video Converter for Mac

  2. Drag-and-drop the AVI files into the program’s window.

  3. Open the Audio tab, click MP3, and select a preset with a suitable bitrate.

  4. Finally, click Convert.

How do I convert AVI to MP3 using Windows Media Player?

Online, you can find tips on how to convert AVI to MP3 for free with Windows Media Player. These instructions look legit and may seem to work at first glance. However, the ones that may actually work involve burning your AVI onto a CD and then ripping it back with Windows Media Player.

There are other instructions suggesting to save the video from the player and change the file extension manually in the process. In this case, if you check out the output file, it will still be an AVI video by all accounts except for the extension. You can achieve the same result by just renaming the existing file.

So, Windows Media Player cannot convert AVI to MP3. To actually change the format of your files, get a suitable converter app like Movavi Video Converter.

Get Movavi Video Converter for Windows
Get Movavi Video Converter for Mac

How do I convert AVI to MP3 with VLC?

Although VLC is a video player, it can be used as an AVI-to-MP3 converter and is free to download. Here’s how you use it to change the format of a video file to MP3:

  1. Get VLC on your computer:
    Download VLC

  2. From the Media menu, select Convert/Save.

  3. Click Add and locate the AVI file to convert. Click Convert/Save.

  4. In the Profile list, select Video - H.264 + MP3 (MP4).

  5. Click the Wrench icon. In the Encapsulation tab, select MP3. In the Audio codec tab, open the Codec drop-down list and choose MP3. To proceed, click Save.

  6. Click Browse, select the target folder, and enter the name for the future file, including the “.mp3” extension.

  7. To launch the process, click Start.

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