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> Audio Conversion > Convert Audio in MP4 from AAC to AC3

How to Convert Audio in MP4 from AAC to AC3

Catrina Jones
Catrina Jones

Catrina Jones is a qualified editor of this website aimed at multimedia software. She is a regular contributor of product tutorials, reviews as well as tips and tricks, helping all users edit, download or create enjoyable videos.

"I have lots of MKV and MP4 movies with AAC audio sound. But I find the audio quality in AAC in unbearable sometimes and my home theater like WDTV cannot decode AAC directly. So I need to convert the AAC audio in my MP4 movies to AC3 for easy using in my home theatre system without changing the video format. Any solutions?"


If you are looking for the best way, in speed and quality, to convert AAC track into AC3, then this article might be helpful to you. It will introduce the tool needed to convert the AAC sound track in MP4 files to AC3 without re-encoding the video. Let's run down and see which software is the right solution.


Video Converter Ultimate is the best choice to have whenever you need to convert AAC to AC3 or MP3 to M4R, WAV to MP3, etc. Besides audio conversion, it is also a video converter that can convert video files from one format to another. It is simple-to-use and features fast conversion speed as well as stand-out output quality. More surprisingly, it allows you to record video on PC and download video from YouTube, Facebook, Yahoo, Vimeo and more.

Video Converter Ultimate – Easy-to-use AAC to AC3 Converter

Video Converter Ultimate is an all-in-one program for converting both video formats and audio formats. Download the program to give it a try.

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How to Convert Audio in MP4 from AAC to AC3

Brief introduction about AAC and AC3

  • AAC is known as the abbreviation of Advanced Audio Coding. It is designed to be the successor of MP3 format but has better sound quality at the similar bit rates.

  • While AC3, which stands for Audio Coding 3, is a file extension used as the standard audio track format on DVDs, Blu-ray Discs, game consoles, HDTV broadcast and son on.

Step 1. Import video files with AAC audio files

Download, install and run Video Converter Ultimate on PC. Go to "Add Files" to import videos or movies into the program. Another way to add file is to drag and drop the video directly into the primary interface.

Run Video Converter Ultimate on PC

Step 2. Select AC3 as output audio format

If you need to convert AAC to AC3 without changing the video format, then go to "Output Format" to select the audio format manually. For example, if you need to keep the video as MP4 format, then go to "Output Format" > "Video" > "MP4".

Select Output Format

After that, go to "Settings" button on the bottom right corner. A pop-up window will show up which allows you to make changes to the audio settings. Select "Audio" > "Encoder" > "AC3", and then click on "OK" to save the settings.

Edit Video

Step 3. Convert AAC to AC3

When it's finished, click on "Convert" button to start converting AAC audio in MP4 file to AC3. A few seconds later, you can go to "Open Folder" to find the converted file.

Convert AAC to AC3

With Video Converter Ultimate, you can convert AAC to AC3 or vice versa with 3 simple steps. No damage will be made to the video/audio quality during the conversion. Now enjoy yourself!


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