C++ Developer for e-learning project!

We need an e-learning project and currently looking for a developer proficient in C++ who could create a program with the following features: -resulting filesize should be under 100mb -records both audio/video -RTMP support -works on Windows 7/8/10 and up, on all architecture. we only need a native c++ application as an EXE that accepts certain parameters as filename/destination, record or just preview, hide/show close button, minimize ..., record locally, record RTMP, or both. How much is the cost and how long will it take for you to deliver the app. The app should only work on Windows 7/8/10 and above ,64/32 bit