Disabling VP8 codec and activate H264

Hi guys,
I need to change codec from VP8 to H264. When i connect with ios device into meeting room, just only ios devices heating and melting battery. Also freezing problems shown.

I researched some pages and topics, i found the problem in codec properties. I need to change this but when i try processing
preferH264:true
or
prefferedCodec:‘H264’

not working. I see some jicofo properties, but these are not clear information. If you had any experience about this problem please show me. Thanks!

Additional: when i try debugging, safari doesn’t write codec information on console. Chrome says it is VP8.