Convert AVI to AAC
Extract the audio from your AVI video files and save it as AAC, directly in your browser.
How to convert video to audio in 3 steps
Choose a AVI video file.
Click convert to AAC.
Download your AAC audio.
Format descriptions
AVI — AVI is one of the oldest video containers, developed by Microsoft. It is widely compatible but offers less efficient compression and larger files.
AAC — AAC (Advanced Audio Coding) is a lossy audio codec that is more efficient than MP3 at the same bitrate. It is the standard for MP4 video and modern devices.
Technical comparison: AVI vs AAC
Technical breakdown of the AVI and AAC specifications: compression, colour, transparency and animation support.
| Property | AVI | AAC |
|---|---|---|
| Specification | AVI (Audio Video Interleave) | AAC (Advanced Audio Coding) |
| Media type | Video | Audio |
| Compression | Lossy · DivX / XviD / MPEG-4 + PCM | Lossy · LC / HE-AAC |
| Color space / bit depth | 24-bit YUV | 16-bit up to 48 kHz |
| Transparency | Not applicable | Not applicable |
| Animation | Yes (animated) | No (static) |
| Best for | AVI is one of the oldest video containers, developed by Microsoft. It is widely compatible but offers less efficient compression and larger files. | AAC (Advanced Audio Coding) is a lossy audio codec that is more efficient than MP3 at the same bitrate. It is the standard for MP4 video and modern devices. |
What happens when converting AVI to AAC?
The AVI data is decoded inside your browser with WebAssembly and re-encoded to the AAC specification, so no file is ever uploaded to a server. AAC uses lossy compression: the file gets far lighter, but a small amount of fine detail is discarded in the process. AVI supports animation while AAC does not, so only the first frame is kept. Audio is re-encoded with the AAC codec while keeping the original duration, so audio and video stay in sync.
Frequently Asked Questions
What is video to audio conversion?
Video to audio conversion extracts the sound track from a video file, for example from AVI to AAC, keeping only the audio content.
Are my video files uploaded?
No. This tool processes video files directly in your browser. Your video files are never sent to a server.
Which video formats are supported?
This tool converts the audio of AVI video files to AAC, all in your browser.
Is it really free and unlimited?
Yes, the tool is completely free and you can convert as many videos as you want, with no limits.
Does it work on mobile too?
Yes, it works on any modern device, including smartphones, tablets and desktop computers.
Which format will the result be in?
The converted file will always be in AAC format, ready to download and use.
About the video to audio converter
Extract and convert the audio from your AVI videos to AAC for free. Everything happens in your browser: your files are never uploaded to a server, and you need no downloads or sign-up to get started.
See also:
- Video to Audio Converters
- Compress Videos OnlineCompress MP4, WebM, AVI, MKV, MOV, MPEG, TS and 3GP videos online for free. Reduce video file size while keeping good quality. Everything happens in your browser: videos are never uploaded to a server, and you need no downloads or sign-up to get started.
- Convert AVI to MP3Extract and convert the audio from your AVI videos to MP3 for free. Everything happens in your browser: your files are never uploaded to a server, and you need no downloads or sign-up to get started.
- Convert AVI to WAVExtract and convert the audio from your AVI videos to WAV for free. Everything happens in your browser: your files are never uploaded to a server, and you need no downloads or sign-up to get started.
- Convert AVI to OGGExtract and convert the audio from your AVI videos to OGG for free. Everything happens in your browser: your files are never uploaded to a server, and you need no downloads or sign-up to get started.