How can I change a suffix to another suffix for example change .avi to .mp4

Answer 1

https://www.mediacollege.com/microsoft/windows/extension-change.html
https://www.addictivetips.com/windows-tips/batch-change-rename-file-extensions-in-windows/

Answer 2

there are free softwares you can find by searching in google or ... to convert video or audio formats

Answer 3

But I think there is a api in js

Answer 4

من که جایی ندیدم توی جاوااسکریپت بشه اینکارو کرد