Answer for How to merge two streams

We tried using the command given by but without any success, the videos were created with audio’s but without visuals. We also tried doing it outside our office network on the weekend but with same result. Could please tell us where we are going wrong in using the command shared by you or do we need to update any server or machine settings from via which we are running the command. See attached screenshot of putty where we have run the command. Thanks


Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.