How to convert video files from avi to mkv?

Question

Video

Hello! Tell me, is there a large amount of video files in avi that need to be transcoded to mkv?
He did it with the help of video editing, but unfortunately he does it very wrong, the first frames go with the light, and only one at a time.

How can I immediately select 10 files and what would they be converted? What is better to use for normal conversion? It's just annoying to choose one at a time.

Interested in the option both on Windwos and on Linux?

Answer 1

I use HandBrake, you can also use Any Video Converter, it definitely knows how.
Both products are free.

Answer 2

MKVToolNix