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Instantly convert AAC files to a high-quality MP4 file.
Free to use.


Turn AAC files into MP4 format for increased compatibility

Change the file format of your AAC file to the standard MP4 output format. This ensures your video file is compatible on most platforms—all without losing quality. Keep full control over your AAC file as an MP4 during the file conversion process with Kapwing's video converter.

Turn AAC files into MP4 format for increased compatibility Screenshot

How to Convert AAC to MP4

  1. Upload AAC file

    Upload a AAC file from a folder or URL link directly to Kapwing.

    Note: Kapwing's video converter supports most video formats including MOV, AVI, WMV, WebM, and more.

  2. Convert AAC to MP4

    Select Export project in the top right-hand corner of the editor. Then select MP4 as the output format.

  3. Edit and export

    Continue editing your video with Kapwing's user-friendly video editor. When you're finished, hit Export project again and select Export as MP4 to download an MP4 file of your AAC video.

Maintain high video quality from AAC to MP4

This AAC to MP4 converter ensures you have full control over your video file during each step of the process. Adjust file size and video resolution in the export settings.

Convert AAC to popular video format MP4

Kapwing supports batch conversion projects, so you can convert multiple video files in other formats to MP4 format. Download multiple converted files at a time without losing video or audio quality.

Frequently Asked Questions

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What makes an MP4 file different from AAC?

The MP4 (MPEG-4 Part 14) file format is a digital multimedia container format most commonly used to store video and audio. The file extension is .MP4. The MIME type is 'video/mp4', 'audio/mp4.' MP4 is a container format, which means it can hold multiple types of data such as video, audio, subtitles, images, and metadata like title, artist, album, genre, and more. MP4 supports progressive download and streaming via protocols like HTTP and RTP. MP4 files are organized in a hierarchical structure of boxes, which are the basic building blocks. Each box contains information about the media file, including file type, media data, and metadata. MP4s are supported across various platforms, including web browsers, mobile devices, gaming consoles, and media players.

Can you convert AAC to MP4 for free?

Yes. There are several free options for converting your video or audio file to an MP4 for free. You could use an online website like Online Convert or Convertio. Kapwing is a great video editing solution, although the converted MP4 video will have a watermark on it that you need to pay to remove or crop out. Alternatively, you can choose a desktop solution like HandBrake, an open-source video transcoder, or an FFMPEG script from the command-line.

What's different about Kapwing?

Start creating immediately with thousands of templates and copyright free videos, images, music, and GIFs. Repurpose content from the internet by pasting a link.
Kapwing is completely free to start. Just upload a video and start editing. Supercharge your editing workflow with our powerful online tools.
Automatically subtitle and translate videos with our AI-powered Subtitler tool. Caption your videos in seconds, so that no viewers get left behind.
Kapwing is cloud based, which means your videos are wherever you are. Use it on any device and access your content anywhere in the world.
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Kapwing works hard to help make the content you want, when you want it. Get started on your project today.
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