INTRA_FRAME       558 libavcodec/mss4.c     c->pic->key_frame = (frame_type == INTRA_FRAME);
INTRA_FRAME       559 libavcodec/mss4.c     c->pic->pict_type = (frame_type == INTRA_FRAME) ? AV_PICTURE_TYPE_I
INTRA_FRAME       607 libavcodec/mss4.c                 if (frame_type == INTRA_FRAME) {