NGINX config required for shifting traffic based on some URL parameter

Hi I am not developer but we want nginx to transfer streaming traffic based on some live tv channel name to specific server e.g:

http://oursite.com:1935/live/smil:mychannel1.smil/playlist.m3u8

Like in the above url whenever mychannel1 comes nginx should transfer this streaming traffic to server1 we have Wowza servers running.

Example 2:

http://oursite.com:1935/live/smil:mychannel2.smil/playlist.m3u8

Like in the above url whenever mychannel2 comes nginx should transfer this streaming traffic to server2 we have Wowza servers running.

We are using HLS for streaming and want NGING to load balance like this.

Kindly provide nginx.conf for above requirement.

Many Thanks