i'm slightly puzzled by your config.
The setup seems to match the one for the Dutch KPN FTTH provider, yet you set a fixed ip-address for the IPTV VLAN. That IP is normally DHCP based. If you set that to DHCP it should get the IPTV routing info from the DHCP offer. After that you should be able to delete all self configured firewall rules that allow IGMP as the new IGMP startup service will automatically inject the right firewall rules into the firewall at startup time.
setting it to DHCP would require setting the vendor ID option for the IPTV vlan as well:
option vendorid 'IPTV_RG'