Automatical fix ffmpeg in opera on ubuntu 20.04

Automatical fix ffmpeg in opera on ubuntu 20.04

This gist describe how to create apt hook. When you install or upgrade any package,
hook /etc/apt/apt.conf.d/80upgradehook is running. 
Hook run script /usr/local/sbin/apt_after_upgrade_hook and this script check if
/usr/lib/x86_64-linux-gnu/opera/libffmpeg.so is symlink,and when not make symlink to newest
libffmpeg fromchromium-ffmpeg snap.



sudo snap install chromium-ffmpeg
sudo echo 'DPkg::Post-Invoke {"/usr/local/sbin/apt_after_upgrade_hook";};' > /etc/apt/apt.conf.d/80upgradehook
sudo cat <<EOF >>/usr/local/sbin/apt_after_upgrade_hook
#!/bin/bash
# Source: https://gist.github.com/WMP/8042f545ea1b6309a5c8d35a371a52c8 
# Remember to make this file executable: chmod +x /usr/local/sbin/apt_after_upgrade_hook
set -e
if [ ! -L /usr/lib/x86_64-linux-gnu/opera/libffmpeg.so ]; then
        ffmpeg_path=$(ls -r /snap/chromium-ffmpeg/current/chromium-ffmpeg-*/chromium-ffmpeg/libffmpeg.so | head -n 1)
        ln -fs $ffmpeg_path /usr/lib/x86_64-linux-gnu/opera/libffmpeg.so
fi
EOF
sudo chmod +x /usr/local/sbin/apt_after_upgrade_hook