상속: IMediaTransformerFactory
 public MediaTransformer(IFormatInfo outputFormat, TransformerFactoryBase transformerFactory)
 {
     _transformerFactory = transformerFactory;
     OutputFormat        = outputFormat;
 }
 public MediaTransformer(IFormatInfo outputFormat, TransformerFactoryBase transformerFactory)
 {
     _transformerFactory = transformerFactory;
     OutputFormat = outputFormat;
 }