map $upstream_http_location $redirect_uri {
    default "";
    "~http(?:s)?://[^/]/(?<location_uri>.*)$" "$location_uri";
}


upstream origin {
    server origin1.com;
}


server {

    listen 80;
    server_name nginx-front.com;

    proxy_set_header Host "origin1.com";
    proxy_redirect http://origin1.com/ /;

    location ~ ^/m3ugen/hls/(w+).mp4.m3u8$ {
        proxy_pass http://origin/m3ugen/segsrc/$1.mp4;
        error_code 301 302 = @handler;
    }

    location @handler {
        rewrite ^ /$redirect_uri;
        proxy_pass http://origin;
    }

}