I need to show media (images & videos) links from external cdn from my vps that has nginx web server. My summary config on nginx.conf :

upstream video_balancer {
server res.cloudinary.com;
}

server {
listen 80;
server_name video.XXXXX.com;
return 301 https://$host$request_uri;
}

server {
listen 443 ssl;
ssl on;
server_name video.XXXXX.com;
root /var/www/video/html/;
ssl_ciphers 'EECDH+AESGCM:EDH+AESGCM:AES256+EECDH:AES256+EDH';
ssl_certificate /etc/nginx/ssl/XXXXX.crt;
ssl_certificate_key /etc/nginx/ssl/XXXXX.key;
ssl_session_cache shared:SSL:1m;
ssl_prefer_server_ciphers on;
ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
ssl_verify_client off;

location / {
try_files $uri $uri/ 404;
proxy_method GET;
proxy_redirect off;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;
proxy_set_header X-Forwarded-Port 443;
proxy_set_header X-Forwarded-Ssl on;
proxy_set_header X-Forwarded-HTTPS "on";
proxy_ssl_session_reuse off;
proxy_http_version 1.1;
proxy_pass http://video_balancer$request_uri;
}
}


When I try sample below link, I got 404 Not Found error:

https://video.XXXXX.com/mediaclub/video/upload/v1527154870/news.mp4

and related access logs:

X.X.X.X - - [24/May/2018:14:53:42 +0430] "GET /mediaclub/video/upload/v1527154870/news.mp4 HTTP/1.1" 404 200 "-" "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.181 Safari/537.36" "-"


How can I resolve the issue?