frontend for converting AVI to MP4 in linux mint
 

i need to convert AVI file to MP4 format. pl help

Have you tried using google and/or the LQ site search yet? It's not like this an uncommon question, after all.

In any case, I recommend avidemux.

Another program which should work is devede which should be in the repositories.

WinFF and arista are two other simple frontends.