diff --git a/utils/utils.c b/utils/utils.c
index d9a7b77e..67c1c0f5 100644
--- a/utils/utils.c
+++ b/utils/utils.c
@@ -93,6 +93,21 @@ void dump_mpp_frame_to_file(MppFrame frame, FILE *fp)
             fwrite(base_c, 1, width, fp);
         }
     } break;
+    case MPP_FMT_YUV420P : {
+        RK_U32 i;
+        RK_U8 *base_y = base;
+        RK_U8 *base_c = base + h_stride * v_stride;
+
+        for (i = 0; i < height; i++, base_y += h_stride) {
+            fwrite(base_y, 1, width, fp);
+        }
+        for (i = 0; i < height / 2; i++, base_c += h_stride / 2) {
+            fwrite(base_c, 1, width / 2, fp);
+        }
+        for (i = 0; i < height / 2; i++, base_c += h_stride / 2) {
+            fwrite(base_c, 1, width / 2, fp);
+        }
+    } break;
     case MPP_FMT_YUV444SP : {
         /* YUV444SP -> YUV444P for better display */
         RK_U32 i, j;