Sensoray 2250 Linux Ver2.0.X - Manual (Page 15)

Parameters
board
board number in the system (use 0 for single board setups).
seq_mode
Sequence mode. GOP size must be valid for the given sequence mode. If unsure,
please do not change the sequence mode or GOP size.
1 = IFrames only (can be set using SN_SetBasicChipSettings)
2 = IP
3 = IPB
Returns
0 on success, negative value if error
int SN_SetGopSize(
int board,
int gop_size)
);
Advanced use only. It is recommended to leave this setting alone. Sensoray is not
responsible for invalid combinations of sequence mode and gop size(see
SN_SetGopSize). Please see constraints in SN_SetSeqMode to see allowed
combinations. If you just want I frames, please see SN_SetBasicChipSettings
Parameters
board
board number in the system (use 0 for single board setups).
gop_size
Size of the group of picture. 1-15 (MPEG1/MPEG2/MPEG4) 1-30 (MPEG4DIVX).
GOP size must be valid for the given sequence mode. If unsure, do not change
the GOP size.
Returns
0 on success, negative value if error
int SN_SetHeight(
int board,
int height)
);
1