[Theora] IntraFrame Detection

[Eduard Kriegler]

Hi

For my application I need to *know* when a frame was encoded to be an 
intraframe (or keyframe or a frame that is independent of previous frames).

In Chapter 7 of the Theora I Specification document it is said that 
there is a "FTYPE" parameter in the frame header which will indicate 
whether the frame is a inter or intraframe. What I would like to know is 
whether this frame header is indeed the first bits of the data placed in 
the ogg_packet by the theora_encode_packetout() function?

Thanks,
Eduard Kriegler