This inheritance list is sorted roughly, but not completely, alphabetically:

Ctsvb::IAppleCompatFrame	Access to IFrame as CVPixelBuffer on Apple platforms
Ctsvb::IAppleCompatFrameFactory	Creates IFrame from CVPixelBuffer on Apple platforms
Ctsvb::IRelease	Base interface of all objects created by the SDK
Ctsvb::IAuthResult	Result of authorization
Ctsvb::IError	Error description
Ctsvb::IFrame	Video frame
Ctsvb::IFrameFactory	Creates IFrame instances
Ctsvb::ILockedFrameData	Access to the data inside IFrame
Ctsvb::IPipeline	Configuration of effects and frame processor
Ctsvb::IPipelineConfiguration	Pipeline configuration
Ctsvb::IReplacementController	Controls the custom background of background replacement
Ctsvb::ISDKFactory	The entry point of the SDK