add a feature

[thonsouza]

Actually no problem, but I would like to take a doubt. Could you make a change so that the script forces the conversion of the files to .mp4 as well? I tried to change it, but it says that it is not possible to rewrite original file.

Thank you very much if you can give me a light, because I do not understand much.

REF> This script: convert-to-mp4.sh