This attribute allows parameters that are specific to a particular format to be conveyed in a way that SDP does not have to understand them. a=fmtp:format format_specific_parameters

public class FmtpAttribute : SDPAttribute

Public Class FmtpAttribute
	Inherits SDPAttribute

public ref class FmtpAttribute : public SDPAttribute

type FmtpAttribute =  
    class
        inherit SDPAttribute
    end