server {
        listen 8080 default_server;
        listen [::]:8080 default_server;

        root /home/YOURNAMEHERE/www/html;

        index index.html index.htm index.nginx-debian.html;

        server_name _;

        location / {
                # First attempt to serve request as file, then
                # as directory, then fall back to displaying a 404.
                try_files $uri $uri/ =404;
        }

        location ~ /transcode {
               content_by_lua_block {
                   local source_url = "http://IP_OF_HDHOMERUN:5004/auto/" .. ngx.var.arg_channel
                   local port = tostring((ngx.crc32_short(ngx.var.arg_channel) % 1024) + 8192)
                   local cmd = "/usr/bin/nohup /usr/bin/ffmpeg -loglevel fatal -analyzeduration 3000000 -fflags +igndts -ignore_unknown -strict experimental -threads 0 -hwaccel vaapi -hwaccel_output_format vaapi -vaapi_device /dev/dri/renderD128 -i " .. source_url .. " -f mpegts -c:v:0 mpeg2_vaapi -c:a:0 copy -y -listen 1 http://" .. ngx.var.server_addr .. ":" .. port .. " < /dev/null &"
                   os.execute(cmd)
                   ngx.sleep(5)
                   ngx.header["X-cmd"] = cmd
                   ngx.redirect("http://" .. ngx.var.server_addr .. ":" .. port)
               }
        }

        location ~ /auto {
                rewrite ^/auto/(.*)$ /transcode?channel=$1 last;
        }

}