diff --git a/libavcodec/mpegvideo.c b/libavcodec/mpegvideo.c
index 6a8c7e0433..8055d15178 100644
--- a/libavcodec/mpegvideo.c
+++ b/libavcodec/mpegvideo.c
@@ -727,7 +727,7 @@ do {\
     return 0;
 }
 
-int ff_mpeg_ref_picture(MpegEncContext *s, Picture *dst, Picture *src)
+int ff_mpeg_ref_picture(AVCodecContext *avctx, Picture *dst, Picture *src)
 {
     int ret;
 
@@ -761,7 +761,7 @@ int ff_mpeg_ref_picture(MpegEncContext *s, Picture *dst, Picture *src)
 
     return 0;
 fail:
-    ff_mpeg_unref_picture(s->avctx, dst);
+    ff_mpeg_unref_picture(avctx, dst);
     return ret;
 }
 
@@ -937,7 +937,7 @@ int ff_mpeg_update_thread_context(AVCodecContext *dst,
     for (i = 0; i < MAX_PICTURE_COUNT; i++) {
         ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
         if (s1->picture[i].f->buf[0] &&
-            (ret = ff_mpeg_ref_picture(s, &s->picture[i], &s1->picture[i])) < 0)
+            (ret = ff_mpeg_ref_picture(s->avctx, &s->picture[i], &s1->picture[i])) < 0)
             return ret;
     }
 
@@ -945,7 +945,7 @@ int ff_mpeg_update_thread_context(AVCodecContext *dst,
 do {\
     ff_mpeg_unref_picture(s->avctx, &s->pic);\
     if (s1->pic.f->buf[0])\
-        ret = ff_mpeg_ref_picture(s, &s->pic, &s1->pic);\
+        ret = ff_mpeg_ref_picture(s->avctx, &s->pic, &s1->pic);\
     else\
         ret = update_picture_tables(&s->pic, &s1->pic);\
     if (ret < 0)\
@@ -1741,7 +1741,7 @@ int ff_mpv_frame_start(MpegEncContext *s, AVCodecContext *avctx)
     //     s->current_picture_ptr->quality = s->new_picture_ptr->quality;
     s->current_picture_ptr->f->key_frame = s->pict_type == AV_PICTURE_TYPE_I;
 
-    if ((ret = ff_mpeg_ref_picture(s, &s->current_picture,
+    if ((ret = ff_mpeg_ref_picture(s->avctx, &s->current_picture,
                                    s->current_picture_ptr)) < 0)
         return ret;
 
@@ -1822,14 +1822,14 @@ int ff_mpv_frame_start(MpegEncContext *s, AVCodecContext *avctx)
     if (s->last_picture_ptr) {
         ff_mpeg_unref_picture(s->avctx, &s->last_picture);
         if (s->last_picture_ptr->f->buf[0] &&
-            (ret = ff_mpeg_ref_picture(s, &s->last_picture,
+            (ret = ff_mpeg_ref_picture(s->avctx, &s->last_picture,
                                        s->last_picture_ptr)) < 0)
             return ret;
     }
     if (s->next_picture_ptr) {
         ff_mpeg_unref_picture(s->avctx, &s->next_picture);
         if (s->next_picture_ptr->f->buf[0] &&
-            (ret = ff_mpeg_ref_picture(s, &s->next_picture,
+            (ret = ff_mpeg_ref_picture(s->avctx, &s->next_picture,
                                        s->next_picture_ptr)) < 0)
             return ret;
     }
diff --git a/libavcodec/mpegvideo.h b/libavcodec/mpegvideo.h
index 45c8712428..aec74b4bf7 100644
--- a/libavcodec/mpegvideo.h
+++ b/libavcodec/mpegvideo.h
@@ -863,7 +863,7 @@ void ff_wmv2_encode_mb(MpegEncContext * s,
                        int16_t block[6][64],
                        int motion_x, int motion_y);
 
-int ff_mpeg_ref_picture(MpegEncContext *s, Picture *dst, Picture *src);
+int ff_mpeg_ref_picture(AVCodecContext *avctx, Picture *dst, Picture *src);
 void ff_mpeg_unref_picture(AVCodecContext *avctx, Picture *picture);
 void ff_free_picture_tables(Picture *pic);
 
diff --git a/libavcodec/mpegvideo_enc.c b/libavcodec/mpegvideo_enc.c
index 116f494fec..ec495c1f59 100644
--- a/libavcodec/mpegvideo_enc.c
+++ b/libavcodec/mpegvideo_enc.c
@@ -1371,7 +1371,7 @@ no_output_pic:
                AV_PICTURE_TYPE_B ? 3 : 0;
 
         ff_mpeg_unref_picture(s->avctx, &s->new_picture);
-        if ((ret = ff_mpeg_ref_picture(s, &s->new_picture, s->reordered_input_picture[0])))
+        if ((ret = ff_mpeg_ref_picture(s->avctx, &s->new_picture, s->reordered_input_picture[0])))
             return ret;
 
         if (s->reordered_input_picture[0]->shared || s->avctx->rc_buffer_size) {
@@ -1406,7 +1406,7 @@ no_output_pic:
             }
         }
         ff_mpeg_unref_picture(s->avctx, &s->current_picture);
-        if ((ret = ff_mpeg_ref_picture(s, &s->current_picture,
+        if ((ret = ff_mpeg_ref_picture(s->avctx, &s->current_picture,
                                        s->current_picture_ptr)) < 0)
             return ret;
 
@@ -1500,7 +1500,7 @@ static int frame_start(MpegEncContext *s)
     s->current_picture_ptr->f->key_frame = s->pict_type == AV_PICTURE_TYPE_I;
 
     ff_mpeg_unref_picture(s->avctx, &s->current_picture);
-    if ((ret = ff_mpeg_ref_picture(s, &s->current_picture,
+    if ((ret = ff_mpeg_ref_picture(s->avctx, &s->current_picture,
                                    s->current_picture_ptr)) < 0)
         return ret;
 
@@ -1513,14 +1513,14 @@ static int frame_start(MpegEncContext *s)
     if (s->last_picture_ptr) {
         ff_mpeg_unref_picture(s->avctx, &s->last_picture);
         if (s->last_picture_ptr->f->buf[0] &&
-            (ret = ff_mpeg_ref_picture(s, &s->last_picture,
+            (ret = ff_mpeg_ref_picture(s->avctx, &s->last_picture,
                                        s->last_picture_ptr)) < 0)
             return ret;
     }
     if (s->next_picture_ptr) {
         ff_mpeg_unref_picture(s->avctx, &s->next_picture);
         if (s->next_picture_ptr->f->buf[0] &&
-            (ret = ff_mpeg_ref_picture(s, &s->next_picture,
+            (ret = ff_mpeg_ref_picture(s->avctx, &s->next_picture,
                                        s->next_picture_ptr)) < 0)
             return ret;
     }