Hi, As you know using Nginx in the programming language in different, Could you tell me do you want to use Nginx in which programming language? we can help you to config ffmpeg .
we've more than 10 years of experience in developing Apps and you certainly can trust me on this one .
please contact me in the chat section to give more info on the app itself and also share the design as well .
we are looking forward to hearing from you soon.
Thank you for your time