Convert AVI to MKV Online
Upgrade your legacy AVI files to the versatile MKV container format. Gain support for multiple audio tracks, embedded subtitles, and chapter markers.
Why Convert AVI to MKV?
AVI (Audio Video Interleave) is an older container format from Microsoft that has very limited metadata support. It cannot hold multiple audio tracks, subtitle streams, or chapter markers within a single file. MKV (Matroska) is a modern, open-source container that supports virtually any combination of video, audio, and subtitle codecs in one file.
Converting your AVI files to MKV preserves the original video and audio quality while unlocking the ability to embed soft subtitles in multiple languages, add chapter navigation for long videos, and store additional audio tracks — all features that make MKV the preferred format for movie enthusiasts and media archivists.
How to Convert AVI to MKV
- Upload your AVI file.
- Wait for processing.
- Download the MKV file.
Key Features of MiConvert AVI to MKV
- Modern video container upgrade
- Preserves video quality
- Support for subtitles
- Fast secure processing
- No software required
- Free online tool
Frequently Asked Questions
Will quality be affected?
No, we use a remuxing process whenever possible, which simply repackages the video and audio streams into the MKV container without any re-encoding, perfectly preserving original quality.
Is it free?
Yes, our AVI to MKV converter is completely free to use online with no registration required, no watermarks added, and no limits on file count.
Can MKV hold subtitles?
Yes, MKV is excellent for storing video with soft subtitles in multiple languages. You can toggle subtitles on or off during playback in any compatible media player.
What players support MKV?
VLC Media Player, KMPlayer, PotPlayer, MPV, and most modern Smart TVs from Samsung, LG, and Sony all support MKV playback natively.