Private media conversion
AVI to MKV Converter
Transcode AVI video into a modern Matroska MKV with H.264 video and AAC audio without uploading it.
The engine downloads once from a CDN. Your media remains on this device.
How to use the avi to mkv converter
- STEP 1Choose a AVI file up to 200 MB.
- STEP 2Convert it locally to MKV.
- STEP 3Download the finished MKV file.
About this tool
MKV is a flexible media container supported by VLC, media centers, archival tools, and many desktop players.
The converter encodes H.264 video at CRF 23 and AAC audio at 160 kbps inside a genuine Matroska container.
Processing time depends on duration, source bitrate, output format, and device performance.
Frequently asked questions
Does MKV improve AVI quality?
No. The benefit is modern codec and container compatibility. Transcoding cannot restore missing source detail and may add slight quality loss.
Is my AVI file uploaded?
No. FFmpeg WebAssembly performs the conversion in your browser. The engine downloads from a CDN, but your media stays on your device.
What is the maximum file size?
The browser converter accepts files up to 200 MB. Long files may require substantial device memory.