Convert m2v to av1

Download and install the latest version of Filestar.
Right click on one or more M2v file(s) on your desktop and select Convert with Filestar.
Type convert to av1 in the search box.
Press Convert.

What is the difference between .m2v and .av1?

Name: MPEG-2 Video; AOMedia Video 1
Extension: .m2v; .av1
Format: Binary; Binary
Category: Video; Video
Developer: Moving Picture Experts Group (MPEG); Alliance for Open Media
Description: Video only (without audio) encoded using MPEG-2 compression; An open, royalty-free video coding format designed for video transmissions over the Internet.
MIME Type: video/mpeg; video/av01
Sample: sample.m2v; sample.av1
Wikipedia: .m2v on Wikipedia; .av1 on Wikipedia