VLC Linux with Chromecast: Solution to error "gnutls tls client error: Certificate verification failure: The certificate is NOT trusted. The certificate issuer is unknown. The name in the certificate does not match the expected. "

vlctv.sh

#!/bin/bash
# On my machine VLC fails to connect to chromecast. If I specify the IP it fails to connect because of certificate errors. I can 
# manually download the certificate but it is only valid for 2 days. This little script gets it all working. 

# Set your ip address below and call this script with the filename.
CHROMECAST_IP=192.168.1.153

gnutls-cli --save-cert=chromecast.pem --insecure $CHROMECAST_IP:8009
mkdir -p ~/.local/share/vlc/certs
mv chromecast.pem ~/.local/share/vlc/certs

vlc "$1" --sout "#chromecast"  --gnutls-dir-trust=/home/$USER  --sout-chromecast-ip=$CHROMECAST_IP --demux-filter=demux_chromecast

This didnt work for me, it still said

[00007fa9200172f0] gnutls tls client error: Certificate verification failure: The certificate is NOT trusted. The certificate issuer is unknown. The name in the certificate does not match the expected. 
[00007fa9200172f0] main tls client error: TLS session handshake error

This didn't work for me; however, creating a firewall exception for VLC on port 8009 did work. Might be worth giving it a shot.