Hello together.

I would really like to convert many webm-files to mp4
ihad success with one file by using this command
> ffmpeg -i input.webm -qscale 0 -strict -2 output.mp4

Then i wanted to wirite a script and endet with
> #!/bin/bash

for f in *.webm; do ffmpeg -i "$f" -qscale -experimental mp4 "${f%.webm}.mp4";



done


i get this as output
< Please use -q:a or -q:v, -qscale is ambiguous
Expected number for q:v but found: -experimental


can anyone point me in the right direction
i am not good at coding and I cant help myself

thanks a lot
and sorry for the bad english