Is there any live video stream editing open source project with API for my needs?

Question

I need an open source project with an API

• capable of reading a live video stream (stream codec can be any API can read - I can provide with practically any live streamable one)
• giving me last image data for some processing (like brightness\contrast or more exotic filtering)
• being able to receive data I've changed and starting to stream that data on to some http://localhost:port/ in some format

I need it to be easily accessible from C# (even better, written in C#).

Answer 1

FFMpeg.NET might be a good solution for you. FFMpeg itself does many conversions. There is supposed to be a support for advanced filters in the future (maybe even now). This is a .NET wrapper for it. The FFMpeg system supports streaming video/audio.

You could also try VLC Player which is also open source.