SDK contains API for .Net, C++, and Delphi. Demo applications available in several programming languages. GraphEdit/GraphStudioNext tools can be used to test filters without code.
Processing Filters Pack can be used together with Encoding Filters Pack to provide video and audio processing in your application.
For playback support of most video and audio formats, you may use FFMPEG Source Filter or VLC Source Filter.
The trial version overlays a nag-screen over the video window.