AVI to MKV Converter
Convert AVI to MKV in your browser. Free, no signup. Conversion files are not uploaded to Format Convertly servers. Learn the formats, then convert when your workflow needs MKV.
Choose a file or drag and drop
Drop your AVI file here or
Choose file · Drag & drop · Public file link
- Processed on your device
- No conversion file stored on our servers
- Maximum file size: 100 MB
Conversion runs in your browser. Files are not uploaded to Format Convertly servers.
Processed on your device
No conversion file stored on our servers
Conversion Settings
Customize the output to match your needs.
Convert Quality
92%Output
Output options for this format are applied automatically during browser conversion. Drop your file above to begin.
Advanced settings
Additional Options
Quality or bitrate forces a re-encode. Width/FPS apply only when creating GIF or animated WebP.
How to Convert AVI to MKV
Add your AVI
Drop a AVI file into the browser panel. Nothing is sent to a remote queue.
Confirm settings
Review optional quality/size settings, then confirm MKV as the output.
Download MKV
Convert locally and download the MKV file when processing finishes.
Why Convert AVI to MKV?
Private by design
AVI → MKV runs in your browser. Files are not uploaded to a remote conversion queue.
Ready for the next step
Convert when a site, editor, or teammate expects MKV instead of AVI.
Practical quality
MKV: codec-dependent. Lossy targets trade size for speed — preview when it matters.
Wide compatibility
AVI is commonly used for Legacy device exports and Older Windows multimedia archives.
AVI vs MKV
A quick side-by-side before you convert — deeper comparison lives on the full guide.
| Feature | AVI | MKV |
|---|---|---|
| Kind | video container | video container |
| Compression | container (codec-dependent) | codec-dependent |
| Lossy / lossless | Typically lossy | Typically lossy |
| Transparency | Not supported / N/A | Not supported / N/A |
| Best for | Legacy device exports; Older Windows multimedia archives | Multi-audio and multi-subtitle movies; Archival rips with chapters |
| Typical size | Often larger than modern MP4 for the same picture | Matches the encoded streams; often large for high-bitrate rips |
| Browser / web support | Limited — convert to MP4 for reliable HTML5 playback | Poor compared with MP4 — convert for web |
| Compatibility | Playable with VLC almost everywhere; built-in Windows/macOS players often fail when the AVI wraps uncommon codecs | Excellent in VLC and enthusiast players; variable on iOS, some smart TVs, and web players that expect MP4 |
Choose AVI when…
- Legacy device exports
- Older Windows multimedia archives
- Source files awaiting modernization
- Forensic/legacy footage preservation before MP4 derivatives
Choose MKV when…
- Multi-audio and multi-subtitle movies
- Archival rips with chapters
- Open-source container workflows
- Flexible track layouts
What happens to video quality?
MKV compatibility: Excellent in VLC and enthusiast players; variable on iOS, some smart TVs, and web players that expect MP4
Tip
Converting from AVI cannot restore detail already removed by lossy compression.
Does AVI to MKV reduce quality?
MKV is typically lossy (codec-dependent). Use a higher bitrate when fidelity matters, and keep the AVI master for archival.
MKV format guide →Should I keep the original AVI?
Yes when you may need to re-encode later. AVI: AVI still appears in legacy cameras, medical devices, and older Windows apps. Codecs inside vary wildly — convert to MP4 for reliable playback on modern phones and the web.
AVI format guide →AVI · MKV
Related converters AVI
Related converters MKV
Frequently Asked Questions
More on quality loss: conversion quality guides · problem-solution guides
Does converting AVI to MKV reduce quality?
It can — both sides are typically lossy. A careful encode may look similar; repeated re-encodes cause generational loss. Prefer converting once from the best master you have.
Can you recover quality after converting?
Not from a lossy output alone. Return to the original master (or a better source). Converting to a lossless format does not resurrect discarded detail.
What is generational loss?
Damage that stacks when you decode and lossy-encode the same file over and over (for example JPG→edit→JPG). Edit from masters and export delivery formats once.
Where can I learn more about conversion quality?
Browse Format Convertly’s Quality guides for topics like whether conversion reduces quality, JPG↔PNG myths, WebP/MP3/MP4 tradeoffs, recovery limits, and generational loss — each links to the right converter.
What is a AVI file?
AVI is an older Audio Video Interleave container from Microsoft Windows multimedia. AVI still appears in legacy cameras, medical devices, and older Windows apps. Codecs inside vary wildly — convert to MP4 for reliable playback on modern phones and the web.
Is AVI lossy or lossless?
AVI is typically lossy (container (codec-dependent)). That keeps files small but means discarded detail cannot be restored later.
What is a MKV file?
MKV is a Matroska multimedia container that can hold many video, audio, and subtitle tracks. MKV is a flexible open container beloved for rips and multi-track films (commentary, subtitles, multiple audio languages). Convert to MP4 when a device or web platform refuses Matroska.
Is AVI to MKV private?
Yes. The file is processed locally in your browser and is not uploaded to Format Convertly servers.
Ready to Convert Your Files?
AVI to MKV privately in your browser.