| class  | EncodedAudio | The Encoded_Audio class is used for files
         containing audio data in standard formats, such as
         WAV. | 
| class  | EncodedBinary | The Encoded Binary class describes a binary
         encoded byte stream. | 
| class  | EncodedExternal | The Encoded External class describes an encoded
         byte stream that has been encoded using an encoding scheme that
         is compliant to an external standard. | 
| class  | EncodedHeader | The Encoded Header class describes a header that
         has been encoded using an encoding scheme that is compliant to
         an external standard. | 
| class  | EncodedImage | The Encoded Image class is used for ancillary
         images in standard formats, such as JPEG. | 
| class  | EncodedNative | The Encoded Native class describes a binary
         encoded byte stream. | 
| class  | EncodedVideo | The Encoded_Video class is used for files
         containing video with or without audio data in standard MPEG-4
         format. |