Directshow, Expression Encoder SDK, C#, DeckLink Filter

We have developed an Expression Encoder SDK application in written in C# that encodes live video from a BlackMagic DeckLink Studio 2. We cannot change the capture DirectShow format of the DeckLink card from within C# and the SDK. We need the user to do it manually via the dialogue box on each program launch, which is not ideal. We want a C# routine to add into the program we can use to programmatically change the properties of the DeckLink Video Capture DirectShow filter. (we do not have the time to learn C++ and DirectShow to make it happen) We want to change it to 1080p 50i at this stage, (It defaults to NTSC) The EE4 SDK operates without any DirectShow programming. So we are not sure how it works, or how to use a combination of DirectShow programming and the EE4 SDK. The DeckLink drivers do not support [login to view URL] Method. (but that is what we want...) [login to view URL](v=Expression.40).aspx [login to view URL] We have messed about with [login to view URL] and the DeckLink SDK. There should be a way to do it easily, but we don't have the time to devote to learning DirectShow. We would like the code to have comments so we know how it works, in case we need to modify it in the future.