How to make different wget numbering?

Question

linux

I download several files with the same name and wget numbers them like this

giphy.mp4.10
giphy.mp4.11
giphy.mp4.12
giphy.mp4.13

How to add a number before the extension?
Or the second option - how to generate a random name?
I download using the file in which the links
wget -i cats.txt

Answer 1

#!/bin/bash
cat $1 | while read line
do
  $(`which wget`) $line -O custom_file.mp4
done

Well, in the code you can set arbitrary file names, whatever you want.
./script.sh cats.txt