What the tool does, how to run it, and what to expect from the result.
AVI is the classic Windows video container from cameras and older downloads. MKV (Matroska) is a flexible container for films and screen recordings, often with several audio tracks. The video is decoded and re-encoded by ffmpeg running in your browser, so formats your browser cannot play are read too. Nothing is uploaded: the file never leaves your device.
Short, plain-language definitions for the formats and settings above.
A quick way to understand who this helps, what it solves, and where it connects next.
Anyone with an audio or video file in a format their app or device will not open.
Using the avi to mkv converter without installing anything or signing up.
Short answers for the questions people usually have before trying a utility like this.
No. The conversion runs in your browser tab, so nothing is sent to a server and there is no upload wait.
The video is re-encoded, which always costs a little; at the default setting the difference is hard to see. Long or 4K videos take a while in the browser, so trim first if you only need part.
Nearby tools from the catalog that fit the same job or workflow.
Turn a AVI clip into a looping GIF
Turn a AVI clip into a looping GIF. Free, in your browser, no upload.
Save AVI video frames as JPG images
Save AVI video frames as JPG images. Free, in your browser, no upload.
Convert a AVI video to MOV
Convert a AVI video to MOV. Free, in your browser, no upload.
Extract MP3 audio from a AVI video
Extract MP3 audio from a AVI video. Free, in your browser, no upload.
Save AVI video frames as PNG images
Save AVI video frames as PNG images. Free, in your browser, no upload.
Convert a MKV video to AVI
Convert a MKV video to AVI. Free, in your browser, no upload.
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Re-wrap the video as MKV with H.264 and AAC, for media servers and Plex.