Tvheadend

The streaming routine is common: https://github.com/tvheadend/tvheadend/blob/master/src/webui/webui.c#L322-L323

Not sure what you mean does not work for radio.

When I watch trafic on router, i see only DSCP tag on tv channels, not on radio ones or for web managment

You should check packets at output of the PC with tvheadend. I don't know what your mikrotik router does. Try wireshark or tcpdump to check the packet marking in the PC.

Is same situation, radio don't have DSCP tag.