const char * const FRAME_DELAY_NAME("frameDelay");
const char * const MASK_CONTENT_SCALE_NAME("maskContentScale");
const char * const CROP_TO_MASK_NAME("cropToMask");
const char * const FRAME_DELAY_NAME("frameDelay");
const char * const MASK_CONTENT_SCALE_NAME("maskContentScale");
const char * const CROP_TO_MASK_NAME("cropToMask");