Function generate_video 

pub unsafe extern "C" fn generate_video(
    sd_ctx: *mut sd_ctx_t,
    sd_vid_gen_params: *const sd_vid_gen_params_t,
    frames_out: *mut *mut sd_image_t,
    num_frames_out: *mut c_int,
    audio_out: *mut *mut sd_audio_t,
) -> bool