openwebif stream and LG smart

Hello

i'm using openwebif during stream to my LG smart TV from my receiver.

almost all channels working good. with the exception of certain frequencies

Two channels stream only with english audio. Tv not have function to change audio in this app.

I have the question

what do these figures mean

http://10.0.0.95:8001/1:0:1:C23:1E78:71:820000:0:0:0:

I highlighted what i mean.

please explain me which digit i must correct to change audio or video track

Thanks