User`s manual

Reference Manual 71
X MPEG1: 0x00
X MPEG2: 0x01
X H263: 0x03
X MPEG4: 0x04
X MOTIONJPEG: 0x08
sequence
The sequence mode of the encoding stream. There are three
types of frames used in a stream sequence: Intra frames (I),
Predictive frames (P), and Bi-directional frames (B). This
member indicates the types of frames being used in a stream
sequence. Refer to Enumeration: ESequenceMode for details.
X IONLY: Only I-frames in the stream sequence (1)
X IPONLY: Only I and P frames in the stream sequence (2)
X IPB: All types of frames (I, P and B) in the stream
sequence (3)
gop_mode
The GOP (Group Of Picture) mode of the encoding stream
sequence. Encoding DivX format MPEG4 stream requires
closed GOP mode.
X GOP_MODE_OPEN: 0
X GOP_MODE_CLOSE: 1
gop_size
The Group of Pictures (GOP) size. This value is the key frame
interval. Note that in the IPB sequence mode, the value must
be a multiple of 3. If the stream is preferred to be DVD compli-
ant, the GOP size must be less than or equal to 18.