the maximum is 15. The GOP size is set using the keyint option.
11.8.1.3. Bitrate Constraints
VCD vid... may also use mpeg1video for CIF resolutions.
* keyint: Used to set the GOP size. 18 for 30fps materi... fps material. Commercial producers seem to prefer keyframe intervals of 12. It is possible to make this... d still retain compatibility with most players. A keyint of 25 should never cause any problems.
* vrc
