PRED_GRADIENT      30 libavcodec/utvideo.c     PRED_LEFT, PRED_MEDIAN, PRED_MEDIAN, PRED_NONE, PRED_GRADIENT
PRED_GRADIENT     382 libavcodec/utvideodec.c     if (c->frame_pred == PRED_GRADIENT) {
PRED_GRADIENT     132 libavcodec/utvideoenc.c     if (c->frame_pred == PRED_GRADIENT) {