diff --git a/inc/mpp_frame.h b/inc/mpp_frame.h
index 9d933b3c..f32aa422 100644
--- a/inc/mpp_frame.h
+++ b/inc/mpp_frame.h
@@ -24,12 +24,21 @@ typedef void* MppFrame;
 /*
  * bit definition for mode flag in MppFrame
  */
+/* progressive frame */
 #define MPP_FRAME_FLAG_FRAME            (0x00000000)
+/* top field only */
 #define MPP_FRAME_FLAG_TOP_FIELD        (0x00000001)
+/* bottom field only */
 #define MPP_FRAME_FLAG_BOT_FIELD        (0x00000002)
+/* paired field */
 #define MPP_FRAME_FLAG_PAIRED_FIELD     (MPP_FRAME_FLAG_TOP_FIELD|MPP_FRAME_FLAG_BOT_FIELD)
-#define MPP_FRAME_FLAG_DEINTERLACED     (0x00000004)
-#define MPP_FRAME_FLAG_TOP_FIRST        (0x00000008)
+/* paired field with field order of top first */
+#define MPP_FRAME_FLAG_TOP_FIRST        (0x00000004)
+/* paired field with field order of bottom first */
+#define MPP_FRAME_FLAG_BOT_FIRST        (0x00000008)
+/* paired field with unknown field order (MBAFF) */
+#define MPP_FRAME_FLAG_DEINTERLACED     (MPP_FRAME_FLAG_TOP_FIRST|MPP_FRAME_FLAG_BOT_FIRST)
+#define MPP_FRAME_FLAG_FIELD_ORDER_MASK (0x0000000C)
 // for multiview stream
 #define MPP_FRAME_FLAG_VIEW_ID_MASK     (0x000000f0)
 
@@ -203,8 +212,8 @@ MppFrameColorSpace mpp_frame_get_colorspace(const MppFrame frame);
 void    mpp_frame_set_colorspace(MppFrame frame, MppFrameColorSpace colorspace);
 MppFrameChromaLocation mpp_frame_get_chroma_location(const MppFrame frame);
 void    mpp_frame_set_chroma_location(MppFrame frame, MppFrameChromaLocation chroma_location);
-void    mpp_frame_set_fmt(MppFrame frame, MppFrameFormat fmt);
 MppFrameFormat mpp_frame_get_fmt(MppFrame frame);
+void    mpp_frame_set_fmt(MppFrame frame, MppFrameFormat fmt);
 
 
 /*
diff --git a/mpp/codec/dec/m2v/m2vd_parser.c b/mpp/codec/dec/m2v/m2vd_parser.c
index cd667994..0e89d3e5 100644
--- a/mpp/codec/dec/m2v/m2vd_parser.c
+++ b/mpp/codec/dec/m2v/m2vd_parser.c
@@ -1084,7 +1084,7 @@ MPP_RET m2vd_alloc_frame(M2VDParserContext *ctx)
         ctx->seq_head.decode_height = (ctx->seq_head.decode_height + 15) & (~15);
         ctx->seq_head.decode_width = (ctx->seq_head.decode_width + 15) & (~15);
         if (ctx->frame_cur->slot_index == 0xff) {
-            RK_S32 frametype = 0;
+            RK_U32 frametype = 0;
             mpp_frame_set_width(ctx->frame_cur->f, ctx->display_width);
             mpp_frame_set_height(ctx->frame_cur->f, ctx->display_height);
             mpp_frame_set_hor_stride(ctx->frame_cur->f, ctx->display_width);
@@ -1095,15 +1095,17 @@ MPP_RET m2vd_alloc_frame(M2VDParserContext *ctx)
             mpp_buf_slot_set_prop(ctx->frame_slots, ctx->frame_cur->slot_index, SLOT_FRAME, ctx->frame_cur->f);
             mpp_buf_slot_set_flag(ctx->frame_slots, ctx->frame_cur->slot_index, SLOT_CODEC_USE);
             mpp_buf_slot_set_flag(ctx->frame_slots, ctx->frame_cur->slot_index, SLOT_HAL_OUTPUT);
-            mpp_frame_set_mode(ctx->frame_cur->f, 0);
             ctx->frame_cur->flags = M2V_OUT_FLAG;
-            frametype = 1 - ctx->seq_ext_head.progressive_sequence;
-            if (frametype) {
-                if (!ctx->pic_code_ext_head.top_field_first) {
-                    frametype = 2;
-                    mpp_frame_set_mode(ctx->frame_cur->f, (RK_U32)frametype);
-                }
+            if (ctx->seq_ext_head.progressive_sequence) {
+                frametype = MPP_FRAME_FLAG_FRAME;
+            } else {
+                frametype = MPP_FRAME_FLAG_PAIRED_FIELD;
+                if (ctx->pic_code_ext_head.top_field_first)
+                    frametype |= MPP_FRAME_FLAG_TOP_FIRST;
+                else
+                    frametype |= MPP_FRAME_FLAG_BOT_FIRST;
             }
+            mpp_frame_set_mode(ctx->frame_cur->f, frametype);
         }
     }
     //alloc frame space
diff --git a/mpp/codec/dec/mpg4/mpg4d_parser.c b/mpp/codec/dec/mpg4/mpg4d_parser.c
index e55c0cc0..d12242ac 100644
--- a/mpp/codec/dec/mpg4/mpg4d_parser.c
+++ b/mpp/codec/dec/mpg4/mpg4d_parser.c
@@ -1458,9 +1458,11 @@ MPP_RET mpp_mpg4_parser_setup_hal_output(Mpg4dParser ctx, RK_S32 *output)
         mpp_frame_set_pts(frame, p->pts);
 
         if (hdr_curr->vol.interlacing) {
-            frame_mode = (hdr_curr->vop.top_field_first) ?
-                         (MPP_FRAME_FLAG_TOP_FIELD) :
-                         (MPP_FRAME_FLAG_BOT_FIELD);
+            frame_mode = MPP_FRAME_FLAG_PAIRED_FIELD;
+            if (hdr_curr->vop.top_field_first)
+                frame_mode |= MPP_FRAME_FLAG_TOP_FIRST;
+            else
+                frame_mode |= MPP_FRAME_FLAG_BOT_FIRST;
         }
         mpp_frame_set_mode(frame, frame_mode);
 
diff --git a/mpp/legacy/vpu_api_legacy.cpp b/mpp/legacy/vpu_api_legacy.cpp
index 95d3c5df..9ea0bb10 100644
--- a/mpp/legacy/vpu_api_legacy.cpp
+++ b/mpp/legacy/vpu_api_legacy.cpp
@@ -178,13 +178,25 @@ RK_S32 VpuApiLegacy:: decode_getoutframe(DecoderOut_t *aDecOut)
         MppBuffer buf = NULL;
         RK_U64 pts = 0;
         RK_U32 fd = 0;
+        RK_U32 mode = 0;
         void* ptr = NULL;
         aDecOut->size = sizeof(VPU_FRAME);
         vframe->DisplayWidth = mpp_frame_get_width(mframe);
         vframe->DisplayHeight = mpp_frame_get_height(mframe);
         vframe->FrameWidth = mpp_frame_get_hor_stride(mframe);
         vframe->FrameHeight = mpp_frame_get_ver_stride(mframe);
-        vframe->FrameType = mpp_frame_get_mode(mframe);
+        mode = mpp_frame_get_mode(mframe);
+        if (mode == MPP_FRAME_FLAG_FRAME)
+            vframe->FrameType = 0;
+        else {
+            RK_U32 field_order = mode & MPP_FRAME_FLAG_FIELD_ORDER_MASK;
+            if (field_order == MPP_FRAME_FLAG_TOP_FIRST)
+                vframe->FrameType = 1;
+            else if (field_order == MPP_FRAME_FLAG_BOT_FIRST)
+                vframe->FrameType = 2;
+            else if (field_order == MPP_FRAME_FLAG_DEINTERLACED)
+                vframe->FrameType = 4;
+        }
         vframe->ErrorInfo = mpp_frame_get_errinfo(mframe) | mpp_frame_get_discard(mframe);
         pts = mpp_frame_get_pts(mframe);
         aDecOut->timeUs = pts;