Hello,
I am a computer engineer;
I glad to do your job.
I am an expert in Information Security, Web Security, Network Security, also web programming (PHP, ASP) , Programming (JAVA, jsp, C#, ..), Mobile ( android ,J2ME) , node.js, database(MySQL), web service (soap, web api )...
you will get my help to secure your mp4 streaming. I would like to be honest with you I didn't make a solution like this but I am very experts in security programming using many language and I had coded many tool using PHP, c#, and java ... I found some solution like you want so contact me so I can share what I found with you...
I will give you the best solution due to my experts in cryptography programming using PHP, c# and java
Only chat with me to discuss more details ..
My offer is best to you with my experts and commitment ...
I am very interested in your project and wish to do it ..
Best Regards