AVI to MKV

Turn AVI into MKV with the output already selected for this page. Free batch processing with no signup or watermark.

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What changes when you convert AVI to MKV?

AVI and MKV are containers, while the video and audio codecs live inside them. Compatible streams may be copied; otherwise they are re-encoded for the selected MKV settings.

For the widest playback support, check that the selected video and audio codecs are accepted by the device or service that will receive the MKV file.

Add multiple videos and adjust the available video and audio codec settings before processing.

Open the finished MKV file and check fine details, layout and compatibility in the app where you plan to use it.

What is a AVI file?

AVI is a classic Microsoft video format from the 1990s. It offers broad compatibility and good quality but large, inefficient files, so it is mostly replaced by MP4 today - though it is still common in older archives.

How to open a AVI file

AVI opens in Windows Media Player, VLC and most desktop players; for phones and browsers, converting to MP4 is the reliable choice.

What is a MKV file?

MKV (Matroska) is a flexible open container that holds high-definition video, multiple audio tracks and subtitles in one file. It is popular for movies and archiving, but is not natively supported by every device or browser.

How to open a MKV file

MKV plays in VLC and most modern media players; some phones, browsers and TVs need it converted to MP4 first.

Frequently asked questions

Is it free to convert AVI to MKV?

Yes. There is no sign-up, subscription or watermark on the converted file.

What happens to quality when AVI becomes MKV?

AVI and MKV are containers, while the video and audio codecs live inside them. Compatible streams may be copied; otherwise they are re-encoded for the selected MKV settings.

Which conversion options are available on this page?