streaming site downloader

#!/bin/env bash
if [ "$#" -eq 1 ]
then
    curl "$1" | grep -Eo '<script(.*)</script>' | grep mp4 | sed -re 's#<script([^>]+)></script>##g' | sed -re 's#<script([^>]*)>##g' | sed -re 's#;</script>##g' | sed -re 's#^([a-zA-Z0-9_\.]+)=##g' | jq .state.data.video.videos_manifest
else
    echo "Usage : $0 <url>"
fi