ChangeMyFile Icon

ChangeMyFile

Free AVI to AAC Converter Online

Fast, Free, Secure & Simple

Looking to convert AVI to AAC online for free? You’re in the right place! Change My File is the best AVI to AAC converter trusted by thousands of users worldwide. Whether you're optimizing your audio for better compatibility, reducing file size, or improving playback quality, our tool offers a simple, secure, and high-speed conversion experience—no downloads required.

Convert AVI to AAC Instantly – No Software Needed

Upload your AVI video file and convert it to a high-quality AAC audio file within seconds. Our cloud-based converter ensures you get lightning-fast results without compromising audio clarity. It's 100% browser-based, meaning you can convert AVI to AAC free online from any device—Windows, Mac, Android, or iOS.

Why Choose Change My File for AVI to AAC Conversion?

  1. Free AVI to AAC converter – no hidden charges, no limits
  2. 100% secure and private conversion – your files are safe
  3. Super-fast AVI to AAC audio conversion – get results in seconds
  4. Output optimized for music players, smartphones, and streaming
  5. Supports bulk AVI file uploads for batch conversion
  6. Accessible worldwide – just upload and convert instantly

What is AAC and Why Convert AVI to AAC?

AAC (Advanced Audio Coding) is a popular audio format that delivers better sound quality than MP3 at similar bitrates. If you have an AVI file with embedded audio, extracting and converting that audio to AAC makes it easier to play, edit, or share on platforms like iTunes, YouTube, Android devices, and more.

Converting AVI to AAC format also reduces file size without sacrificing sound quality, making it ideal for streaming and mobile use.

How to Convert AVI to AAC Online with Change My File

  1. Click the Upload AVI File button
  2. Select your file from your device
  3. Hit Convert to AAC
  4. Download your new AAC file instantly

No installation, no account signup, just pure convenience.

Free Online AVI to AAC Converter – No Limits

We know how important flexibility is. That’s why Change My File doesn’t limit file size, conversion count, or usage time. Whether you’re a content creator, music producer, or casual user, our online AVI to AAC converter gives you the freedom to convert what you need—fast and free.

Common Questions

Is it safe to convert AVI to AAC on your website?

Absolutely! Your uploaded files are automatically deleted from our servers after conversion to ensure total privacy.

Will the AAC file work on my device?

Yes. AAC is widely supported across smartphones, music apps, media players, and editing software.

Try the Best AVI to AAC Converter Now – 100% Free & Online

Stop searching for complicated software or unsafe downloads. Use Change My File – the most reliable and user-friendly AVI to AAC converter online. Just upload, convert, and enjoy high-quality audio in seconds.

AAC Technical Specifications

File extension.aac
File categoryAudio
Stands forAdvanced Audio Coding
DeveloperBell Labs, Fraunhofer IIS, Dolby Laboratories, LG Electronics, Sony Corporation (Combined Efforts)
OverviewAAC is the descendant of the MP3 format. It provides better sound quality using a similar bit rate as of MP3. Besides this, it uses lossy data compression but it has high standards of audio quality than of MP3. We can find this format on a number of platforms and Apple's iTunes is one such example that uses it as default audio format. Size of its file is much smaller which is approximately one-tenth of MP3 file. It also neglects the redundant information that is not even processed by the human ear and is often not noticed. Although, this format was introduced as MPEG-2 Part-7, yet, standardization was done by ISO/IEC as a part of the MPEG-2 and MPEG-4 families. It is also termed as MPEG-2 NBC (Non- Backward Compatible) because it is incompatible with MPEG-1 audio formats i.e. MP1, MP2, MP3.
Technical descriptionModified discrete cosine transform(MDCT) algorithm is used by AAC which ensures that it provides high compression efficiency. MPEG-2 PART-7 has three default profiles namely Low Complexity (LC), Main Profile (Main) and Scalable Sample Rate (SSR). These profiles come with Perceptual Noise Substitution which enhances coding efficiency and provides excellent audio quality. Furthermore, it uses Auditory Masking to ignore the surplus information. This codec has come up with advanced features which are not available in the predecessor. These include additional sample rates ranging from 8 to 96 kHz, 48 Channels, better efficiency with a simpler filter bank, higher coding efficiency for stationary signals and higher coding accuracy for transient signals.
Links

AVI Technical Specifications

File extension.avi
File categoryVideo
Stands forAudio Video Interleave
DeveloperMicrosoft
OverviewThis file format stores both audio and video files for playback purposes. It is used to store files that are of high quality as file compression is less in this extension. Windows OS uses this as the default format to store multimedia files but other operating systems such as Linux, Unix and Mac also support this. The data in it is encoded by various codecs such as DivX and XviD. There is a variety of software that support these files. For instance- Microsoft Movies & TV, Windows Media Player and Apple QuickTime player; etc. Due to its low compression ability, it is widely used to make short movies, promos and advertisements; etc. It should be noted that AVI format result in large files that is why it is rarely used for video streaming.
Technical descriptionIn AVI extension, file's data is divided into blocks or chunks as it is a sub-format of RIFF(Resource Interchange file format). An identification of each chunk is done by FourCC tag. File header and metadata of video(like height, width and frame rate) are identified by ‘hdrl tag' which is sub-chunk and it is mandatory. There is one another chunk which is also obligatory that is ‘movi tag' and it has actual audio or video data. The last sub-chunk is ‘idx1 tag' and it records the offsets of the data chunks. This ‘idx1 tag' is completely optional. There is one limitation of this format that it does not contain variable bitrate data.
Links

AVI To Other Extensions