AVI to FLAC Converter
Convert AVI to FLAC online for free: nothing to install, no watermark, files encrypted in transit and deleted automatically after conversion.
Drag & drop your AVI file here, or
How to convert AVI to FLAC in 3 steps
- 1
Upload your AVI file
Drag and drop or select the AVI file you want to convert.
- 2
Choose FLAC as output
The output format is pre-selected for you — just confirm and start the conversion.
- 3
Download your file
Once processing finishes, download your converted FLAC file instantly.
AVI vs FLAC: what is the difference?
| AVI | FLAC | |
|---|---|---|
| Full name | Audio Video Interleave | Free Lossless Audio Codec |
| Type | Video container | Lossless audio |
| Compression | Depends on the codec | Lossless |
| Developed by | Microsoft | Xiph.Org Foundation |
| File extension | .avi | .flac |
What is AVI?
AVI is one of the oldest video containers, introduced by Microsoft for Windows. It is simple and still opens on older players and DVD hardware, but it lacks modern features such as efficient streaming and reliable subtitle support, and files tend to be large.
What is FLAC?
FLAC compresses audio without discarding anything: decoded, it is bit-for-bit identical to the original, yet typically 40–60% smaller than WAV. It is the favourite of audiophiles and music archives, although some older players and Apple apps do not support it.
Tips for converting AVI to FLAC
- Only the soundtrack of your AVI file goes into the FLAC; the picture is discarded.
- FLAC keeps the soundtrack without further loss, but the file is several times larger than an MP3.
- Long videos still take a while to process, and the AVI upload itself must fit the 50MB free limit.
- Keep the original video: the audio file cannot be turned back into it.
Frequently asked questions
- How do I convert AVI to FLAC online?
- Upload your AVI file above, select FLAC as the output format, and click Convert. ConvertFastHub processes the file in the cloud and gives you a download link — no software installation required.
- Is it free to convert AVI to FLAC?
- Yes. Free accounts get 10 conversions every 24 hours with files up to 50MB. For unlimited conversions, larger files up to 1.5GB, and priority processing, upgrade to ConvertFastHub Pro.
- Is my file safe when I convert it?
- Files travel over an encrypted connection, are scanned automatically for malware (files up to 200 MB), are processed in an isolated worker and are deleted automatically: after 1 hour without an account, 24 hours with a free account, or 7 days with Pro.
- Can I convert AVI to FLAC on my phone?
- Yes. The converter runs in the browser and the work happens on our servers, so it works the same on Android, iPhone, tablets and computers — there is no app to install.
- Do I need an account?
- No. You can convert without signing up; results are then kept for 1 hour. A free account keeps them for 24 hours and shows your conversion history.