The bridge configuration is missing some config params:
/interface bridge
add frame-types=admit-only-vlan-tagged igmp-snooping=yes igmp-version=3 mld-version=2 name=bridge
Also remove the VID from /interface bridge mdb, the static MDB entry is to be configured VLAN-neutral aka no VLAN, see official MikroTik docs.
After that you need to configure PIM, like this, I tested, IPv6 + IPv4 works on ROSv7.11.2, I netinstalled before testing with clean/nullconfig.
http://forum.mikrotik.com/t/cross-vlan-multicast-pim-config/168921/1
That’s it, IPTV or whatever should work.