is your wireless network bridged together with the wired LAN?
do the mentioned HD channels work in the wired environment?
can you draw just a brief topology of your networking setup? be sure to mention where is the multicast coming from.
can you post the relevant configuration of your router/ap?
[spoiler]
/caps-man channel
add band=2ghz-b/g/n control-channel-width=20mhz extension-channel=disabled frequency=2412 \
name=channel1 tx-power=18
add band=5ghz-a/n/ac control-channel-width=20mhz extension-channel=Ce frequency=5180 \
name=channel2 tx-power=18
/interface bridge
add admin-mac=4C:5E:0C:34:C9:F5 auto-mac=no fast-forward=no igmp-snooping=yes name=\
bridge-local
/interface wireless
# managed by CAPsMAN
# channel: 2412/20/gn(18dBm), SSID: Ra, local forwarding
set [ find default-name=wlan1 ] band=2ghz-b/g/n channel-width=20/40mhz-Ce country=russia \
disabled=no distance=indoors frequency=auto mode=ap-bridge multicast-helper=full \
ssid=Ra tx-power=19 tx-power-mode=all-rates-fixed wireless-protocol=802.11 \
wmm-support=enabled
/interface ethernet
set [ find default-name=ether1 ] name=ether1-gateway
set [ find default-name=ether2 ] name=ether2-master-local
set [ find default-name=ether3 ] name=ether3-slave-local
set [ find default-name=ether4 ] name=ether4-slave-local
set [ find default-name=ether5 ] name=ether5-slave-local
/interface pptp-server
add name=pptp-in1 user=olo
/interface gre
add allow-fast-path=no clamp-tcp-mss=no disabled=yes !keepalive mtu=1500 name=\
gre-tunnel1-deer remote-address=82.00.0.10
/interface eoip
add allow-fast-path=no clamp-tcp-mss=no !keepalive mac-address=02:93:4A:55:DF:10 mtu=1500 \
name=eoip-tunnel1 remote-address=95.0.46.00 tunnel-id=55
add !keepalive mac-address=02:54:ED:87:8D:76 mtu=1500 name=eoip-tunnel2 remote-address=\
176.0.99.00 tunnel-id=56
add !keepalive local-address=10.1.1.1 mac-address=02:FD:7F:68:6A:89 mtu=1500 name=\
eoip-tunnel3 remote-address=10.1.1.2 tunnel-id=57
/caps-man datapath
add bridge=bridge-local local-forwarding=yes name=datapath1
/caps-man security
add authentication-types=wpa2-psk encryption=aes-ccm group-encryption=aes-ccm name=\
security1 passphrase=123
/caps-man configuration
add channel=channel1 datapath=datapath1 mode=ap multicast-helper=full name=cfg1 \
rx-chains=0,1,2 security=security1 ssid=Ra tx-chains=0,1,2
add channel=channel2 datapath=datapath1 mode=ap multicast-helper=full name=cfg2 \
rx-chains=0,1,2 security=security1 ssid="Ra 5GHz" tx-chains=0,1,2
/interface wireless security-profiles
set [ find default=yes ] authentication-types=wpa-psk,wpa2-psk eap-methods="" mode=\
dynamic-keys supplicant-identity=MikroTik wpa-pre-shared-key=123 \
wpa2-pre-shared-key=123
/ip firewall layer7-protocol
add name=social regexp="^.*(vk.com).*\$"
/ip ipsec proposal
set [ find default=yes ] enc-algorithms=aes-128-cbc
/ip pool
add name=dhcp ranges=192.168.88.101-192.168.88.200
/ip dhcp-server
add address-pool=dhcp authoritative=after-2sec-delay disabled=no interface=bridge-local \
name=default
/queue simple
total-queue=default
/caps-man access-list
/caps-man manager
set enabled=yes
/caps-man provisioning
add action=create-dynamic-enabled hw-supported-modes=b,gn master-configuration=cfg1
add action=create-dynamic-enabled hw-supported-modes=an,ac master-configuration=cfg2
/interface bridge filter
add action=drop chain=forward comment="Drop all DHCP requests over EoIP bridge" dst-port=\
67 ip-protocol=udp mac-protocol=ip
add action=drop chain=forward dst-port=67 ip-protocol=udp mac-protocol=ip
add action=drop chain=output disabled=yes out-interface=wlan1 packet-type=multicast
add action=drop chain=output disabled=yes out-interface=eoip-tunnel1 packet-type=\
multicast
add action=drop chain=output disabled=yes out-interface=eoip-tunnel2 packet-type=\
multicast
add action=drop chain=output disabled=yes out-interface=*14 packet-type=multicast
/interface bridge port
add bridge=bridge-local interface=ether2-master-local
add bridge=bridge-local hw=no interface=wlan1
add bridge=bridge-local hw=no interface=eoip-tunnel1
add bridge=bridge-local hw=no interface=eoip-tunnel2
add bridge=bridge-local hw=no interface=eoip-tunnel3
add bridge=bridge-local interface=ether3-slave-local
add bridge=bridge-local interface=ether4-slave-local
add bridge=bridge-local interface=ether5-slave-local
/ip neighbor discovery-settings
set discover-interface-list=!dynamic
/interface l2tp-server server
set ipsec-secret=kandrat
/interface pptp-server server
set default-profile=default enabled=yes
/interface sstp-server server
set default-profile=default-encryption
/interface wireless access-list
/interface wireless cap
#
set bridge=bridge-local caps-man-addresses=192.168.88.1 enabled=yes interfaces=wlan1
/ip address
add address=192.168.88.1/24 comment="default configuration" interface=ether2-master-local \
network=192.168.88.0
add address=176.197.0.0/30 interface=ether1-gateway network=176.0.20.0
add address=2.2.2.3/24 interface=gre-tunnel1-deer network=2.2.2.0
/ip cloud
set ddns-enabled=yes
/ip dhcp-client
add comment="default configuration" dhcp-options=hostname,clientid interface=\
ether1-gateway
/ip dhcp-server lease
/ip dhcp-server network
add address=192.168.88.0/24 comment="default configuration" gateway=192.168.88.1 netmask=\
24
/ip dns
set allow-remote-requests=yes servers=212.00.200.62,212.00.211.0
/ip dns static
add address=192.168.88.1 name=router
/ip firewall address-list
add address=192.168.88.109 list=dumnies
add address=192.168.88.119 list=dumnies
/ip firewall filter
add action=accept chain=input in-interface=ether1-gateway protocol=igmp
add action=accept chain=forward dst-port=1234 in-interface=ether1-gateway protocol=udp
add action=accept chain=input dst-port=1234 in-interface=ether1-gateway protocol=udp
add action=reject chain=forward comment="Blocked Social Sites" dst-port=80 \
layer7-protocol=social protocol=tcp reject-with=tcp-reset src-address-list=dumnies
add action=reject chain=forward dst-port=443 layer7-protocol=social protocol=tcp \
reject-with=tcp-reset src-address-list=dumnies
add action=drop chain=forward comment="viber" disabled=yes dst-address=\
52.0.252.0/22 src-address=192.168.88.129
add action=drop chain=forward comment="jungleheat" dst-address=185.30.176.211 \
src-address=192.168.88.129
add action=drop chain=forward comment="jungleheat" dst-address=\
185.30.176.211 src-address=192.168.88.148
add action=drop chain=forward comment="viber" disabled=yes dst-address=\
52.0.252.0/22 src-address=192.168.88.131
add action=drop chain=forward comment="kdv" dst-address=185.98.85.30 src-address=\
192.168.88.131
add action=drop chain=forward comment="magnit" dst-address=193.19.171.200 \
src-address=192.168.88.131
add action=accept chain=forward comment="default configuration" connection-state=\
established,related
add action=drop chain=forward comment="default configuration" connection-state=invalid
add action=drop chain=forward comment="default configuration" connection-nat-state=\
!dstnat connection-state=new in-interface=ether1-gateway
/ip firewall nat
add action=masquerade chain=srcnat comment="default configuration" out-interface=\
ether1-gateway
add action=dst-nat chain=dstnat dst-port=10853 in-interface=ether1-gateway protocol=tcp \
to-addresses=192.168.88.111 to-ports=10853
add action=dst-nat chain=dstnat dst-port=6308 in-interface=ether1-gateway protocol=udp \
to-addresses=192.168.88.111 to-ports=6308
add action=dst-nat chain=dstnat dst-port=50999 in-interface=ether1-gateway protocol=tcp \
to-addresses=192.168.88.111 to-ports=50999
add action=dst-nat chain=dstnat dst-port=5651 in-interface=ether1-gateway protocol=tcp \
to-addresses=192.168.88.111
add action=dst-nat chain=dstnat comment="RDP Server" disabled=yes dst-port=46664 \
in-interface=ether1-gateway protocol=tcp to-addresses=192.168.88.104 to-ports=3389
/ip route
add distance=1 gateway=176.1.1.1
add distance=1 dst-address=192.168.0.0/24 gateway=2.2.2.1
/ip service
set telnet disabled=yes
set ftp disabled=yes
set www disabled=yes
set ssh disabled=yes
set api disabled=yes
set api-ssl disabled=yes
/ip smb
set allow-guests=no domain=WORKGROUP interfaces=bridge-local
/ip smb shares
set [ find default=yes ] disabled=yes
add directory=/disk1 max-sessions=50 name=files
/ip smb users
add name=admin password=admin read-only=no
/ip upnp
set allow-disable-external-interface=yes enabled=yes
/ip upnp interfaces
add interface=ether3-slave-local type=internal
add interface=ether1-gateway type=external
/ppp secret
add local-address=10.1.1.1 name=olo password=123 remote-address=10.1.1.2 service=\
pptp
/routing igmp-proxy
set query-interval=1s query-response-interval=1s quick-leave=yes
/routing igmp-proxy interface
add alternative-subnets=0.0.0.0/0 interface=ether1-gateway upstream=yes
add interface=bridge-local
/system clock
set time-zone-name=Asia/Novokuznetsk
/system identity
set name=RA
/system leds
set 0 interface=wlan1
/system logging
set 0 topics=info,!dhcp,!caps
[/spoiler]