Remote application access

Hi Guys

I am new to this so I’m sorry if i sound stupid. I have 2 sites.
Site 1 has a compact DVR that needs to send the camera feed to a machine with the monitoring software

Site 2 has the computer with the monitoring software.

I need to get site 2 to recieve the feed on the machine

Site 1 external IP address xx.xx.xx.xx
Site 2 external IP address aa.aaa.aa.aaa
Site 1 DVR address yyy.yyy.y.yyy
Site 2 Computer bbb.bbb.bb.bbb

I have to open the following ports:

5551; 5545; 5547; 5548; 5549
10000
5552
5609
80
8300
3356
555

I am using the winbox interface for this.
Please help guys as if i dont have this working in 1 hour i am fired!

Thanks