diff --git a/libavcodec/h264.c b/libavcodec/h264.c
index 3d269e9f3e..9110746d3f 100644
--- a/libavcodec/h264.c
+++ b/libavcodec/h264.c
@@ -281,7 +281,7 @@ static void unref_picture(H264Context *h, Picture *pic)
     int off = offsetof(Picture, tf) + sizeof(pic->tf);
     int i;
 
-    if (!pic->f.data[0])
+    if (!pic->f.buf[0])
         return;
 
     ff_thread_release_buffer(h->avctx, &pic->tf);
@@ -303,7 +303,7 @@ static void release_unused_pictures(H264Context *h, int remove_current)
 
     /* release non reference frames */
     for (i = 0; i < MAX_PICTURE_COUNT; i++) {
-        if (h->DPB[i].f.data[0] && !h->DPB[i].reference &&
+        if (h->DPB[i].f.buf[0] && !h->DPB[i].reference &&
             (remove_current || &h->DPB[i] != h->cur_pic_ptr)) {
             unref_picture(h, &h->DPB[i]);
         }
@@ -485,7 +485,7 @@ fail:
 
 static inline int pic_is_unused(H264Context *h, Picture *pic)
 {
-    if (pic->f.data[0] == NULL)
+    if (!pic->f.buf[0])
         return 1;
     if (pic->needs_realloc && !(pic->reference & DELAYED_PIC_REF))
         return 1;
@@ -1850,7 +1850,7 @@ static int decode_update_thread_context(AVCodecContext *dst,
 
     for (i = 0; h->DPB && i < MAX_PICTURE_COUNT; i++) {
         unref_picture(h, &h->DPB[i]);
-        if (h1->DPB[i].f.data[0] &&
+        if (h1->DPB[i].f.buf[0] &&
             (ret = ref_picture(h, &h->DPB[i], &h1->DPB[i])) < 0)
             return ret;
     }
@@ -3644,7 +3644,7 @@ static int decode_slice_header(H264Context *h, H264Context *h0)
          * since that can modify h->cur_pic_ptr. */
         if (h0->first_field) {
             assert(h0->cur_pic_ptr);
-            assert(h0->cur_pic_ptr->f.data[0]);
+            assert(h0->cur_pic_ptr->f.buf[0]);
             assert(h0->cur_pic_ptr->reference != DELAYED_PIC_REF);
 
             /* Mark old field/frame as completed */
@@ -3743,7 +3743,7 @@ static int decode_slice_header(H264Context *h, H264Context *h0)
          * frame, or to allocate a new one. */
         if (h0->first_field) {
             assert(h0->cur_pic_ptr);
-            assert(h0->cur_pic_ptr->f.data[0]);
+            assert(h0->cur_pic_ptr->f.buf[0]);
             assert(h0->cur_pic_ptr->reference != DELAYED_PIC_REF);
 
             /* figure out if we have a complementary field pair */
@@ -5174,7 +5174,7 @@ not_extra:
         }
     }
 
-    assert(pict->data[0] || !*got_frame);
+    assert(pict->buf[0] || !*got_frame);
 
     return get_consumed_bytes(buf_index, buf_size);
 }
diff --git a/libavcodec/h264_refs.c b/libavcodec/h264_refs.c
index b3d123fe14..d989cadcb2 100644
--- a/libavcodec/h264_refs.c
+++ b/libavcodec/h264_refs.c
@@ -141,7 +141,9 @@ int ff_h264_fill_default_ref_list(H264Context *h)
         }
 
         if (lens[0] == lens[1] && lens[1] > 1) {
-            for (i = 0; h->default_ref_list[0][i].f.data[0] == h->default_ref_list[1][i].f.data[0] && i < lens[0]; i++);
+            for (i = 0; i < lens[0] &&
+                        h->default_ref_list[0][i].f.buf[0]->buffer ==
+                        h->default_ref_list[1][i].f.buf[0]->buffer; i++);
             if (i == lens[0]) {
                 Picture tmp;
                 COPY_PICTURE(&tmp, &h->default_ref_list[1][0]);
@@ -304,13 +306,13 @@ int ff_h264_decode_ref_pic_list_reordering(H264Context *h)
     }
     for (list = 0; list < h->list_count; list++) {
         for (index = 0; index < h->ref_count[list]; index++) {
-            if (   !h->ref_list[list][index].f.data[0]
+            if (   !h->ref_list[list][index].f.buf[0]
                 || (!FIELD_PICTURE(h) && (h->ref_list[list][index].reference&3) != 3)) {
                 int i;
                 av_log(h->avctx, AV_LOG_ERROR, "Missing reference picture, default is %d\n", h->default_ref_list[list][0].poc);
                 for (i = 0; i < FF_ARRAY_ELEMS(h->last_pocs); i++)
                     h->last_pocs[i] = INT_MIN;
-                if (h->default_ref_list[list][0].f.data[0]
+                if (h->default_ref_list[list][0].f.buf[0]
                     && !(!FIELD_PICTURE(h) && (h->default_ref_list[list][0].reference&3) != 3))
                     COPY_PICTURE(&h->ref_list[list][index], &h->default_ref_list[list][0]);
                 else
diff --git a/libavcodec/mpegvideo.c b/libavcodec/mpegvideo.c
index 0d50befa8c..00d58dce89 100644
--- a/libavcodec/mpegvideo.c
+++ b/libavcodec/mpegvideo.c
@@ -241,7 +241,7 @@ static int alloc_frame_buffer(MpegEncContext *s, Picture *pic)
         r = avcodec_default_get_buffer2(s->avctx, &pic->f, 0);
     }
 
-    if (r < 0 || !pic->f.data[0]) {
+    if (r < 0 || !pic->f.buf[0]) {
         av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed (%d %p)\n",
                r, pic->f.data[0]);
         return -1;
@@ -388,7 +388,7 @@ int ff_alloc_picture(MpegEncContext *s, Picture *pic, int shared)
         av_assert0(pic->f.data[0]);
         pic->shared = 1;
     } else {
-        av_assert0(!pic->f.data[0]);
+        av_assert0(!pic->f.buf[0]);
 
         if (alloc_frame_buffer(s, pic) < 0)
             return -1;
@@ -717,7 +717,7 @@ int ff_mpeg_update_thread_context(AVCodecContext *dst,
     if(s->picture)
     for (i = 0; i < MAX_PICTURE_COUNT; i++) {
         ff_mpeg_unref_picture(s, &s->picture[i]);
-        if (s1->picture[i].f.data[0] &&
+        if (s1->picture[i].f.buf[0] &&
             (ret = ff_mpeg_ref_picture(s, &s->picture[i], &s1->picture[i])) < 0)
             return ret;
     }
@@ -725,7 +725,7 @@ int ff_mpeg_update_thread_context(AVCodecContext *dst,
 #define UPDATE_PICTURE(pic)\
 do {\
     ff_mpeg_unref_picture(s, &s->pic);\
-    if (s1->pic.f.data[0])\
+    if (s1->pic.f.buf[0])\
         ret = ff_mpeg_ref_picture(s, &s->pic, &s1->pic);\
     else\
         ret = update_picture_tables(&s->pic, &s1->pic);\
@@ -1424,7 +1424,7 @@ static inline int pic_is_unused(MpegEncContext *s, Picture *pic)
 {
     if (pic == s->last_picture_ptr)
         return 0;
-    if (pic->f.data[0] == NULL)
+    if (pic->f.buf[0] == NULL)
         return 1;
     if (pic->needs_realloc && !(pic->reference & DELAYED_PIC_REF))
         return 1;
@@ -1437,7 +1437,7 @@ static int find_unused_picture(MpegEncContext *s, int shared)
 
     if (shared) {
         for (i = 0; i < MAX_PICTURE_COUNT; i++) {
-            if (s->picture[i].f.data[0] == NULL && &s->picture[i] != s->last_picture_ptr)
+            if (s->picture[i].f.buf[0] == NULL && &s->picture[i] != s->last_picture_ptr)
                 return i;
         }
     } else {
@@ -1518,7 +1518,7 @@ int ff_MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx)
     /* mark & release old frames */
     if (s->pict_type != AV_PICTURE_TYPE_B && s->last_picture_ptr &&
         s->last_picture_ptr != s->next_picture_ptr &&
-        s->last_picture_ptr->f.data[0]) {
+        s->last_picture_ptr->f.buf[0]) {
         ff_mpeg_unref_picture(s, s->last_picture_ptr);
     }
 
@@ -1543,7 +1543,7 @@ int ff_MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx)
         ff_release_unused_pictures(s, 1);
 
         if (s->current_picture_ptr &&
-            s->current_picture_ptr->f.data[0] == NULL) {
+            s->current_picture_ptr->f.buf[0] == NULL) {
             // we already have a unused image
             // (maybe it was set before reading the header)
             pic = s->current_picture_ptr;
@@ -1603,13 +1603,13 @@ int ff_MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx)
             s->pict_type, s->droppable);
 
     if ((s->last_picture_ptr == NULL ||
-         s->last_picture_ptr->f.data[0] == NULL) &&
+         s->last_picture_ptr->f.buf[0] == NULL) &&
         (s->pict_type != AV_PICTURE_TYPE_I ||
          s->picture_structure != PICT_FRAME)) {
         int h_chroma_shift, v_chroma_shift;
         av_pix_fmt_get_chroma_sub_sample(s->avctx->pix_fmt,
                                          &h_chroma_shift, &v_chroma_shift);
-        if (s->pict_type == AV_PICTURE_TYPE_B && s->next_picture_ptr && s->next_picture_ptr->f.data[0])
+        if (s->pict_type == AV_PICTURE_TYPE_B && s->next_picture_ptr && s->next_picture_ptr->f.buf[0])
             av_log(avctx, AV_LOG_DEBUG,
                    "allocating dummy last picture for B frame\n");
         else if (s->pict_type != AV_PICTURE_TYPE_I)
@@ -1650,7 +1650,7 @@ int ff_MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx)
         ff_thread_report_progress(&s->last_picture_ptr->tf, INT_MAX, 1);
     }
     if ((s->next_picture_ptr == NULL ||
-         s->next_picture_ptr->f.data[0] == NULL) &&
+         s->next_picture_ptr->f.buf[0] == NULL) &&
         s->pict_type == AV_PICTURE_TYPE_B) {
         /* Allocate a dummy frame */
         i = ff_find_unused_picture(s, 0);
@@ -1674,21 +1674,21 @@ int ff_MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx)
 #endif
     if (s->last_picture_ptr) {
         ff_mpeg_unref_picture(s, &s->last_picture);
-        if (s->last_picture_ptr->f.data[0] &&
+        if (s->last_picture_ptr->f.buf[0] &&
             (ret = ff_mpeg_ref_picture(s, &s->last_picture,
                                        s->last_picture_ptr)) < 0)
             return ret;
     }
     if (s->next_picture_ptr) {
         ff_mpeg_unref_picture(s, &s->next_picture);
-        if (s->next_picture_ptr->f.data[0] &&
+        if (s->next_picture_ptr->f.buf[0] &&
             (ret = ff_mpeg_ref_picture(s, &s->next_picture,
                                        s->next_picture_ptr)) < 0)
             return ret;
     }
 
     av_assert0(s->pict_type == AV_PICTURE_TYPE_I || (s->last_picture_ptr &&
-                                                 s->last_picture_ptr->f.data[0]));
+                                                 s->last_picture_ptr->f.buf[0]));
 
     if (s->picture_structure!= PICT_FRAME) {
         int i;
diff --git a/libavcodec/pthread_frame.c b/libavcodec/pthread_frame.c
index cfbc9643ee..4f9d68b77b 100644
--- a/libavcodec/pthread_frame.c
+++ b/libavcodec/pthread_frame.c
@@ -853,7 +853,7 @@ FF_DISABLE_DEPRECATION_WARNINGS
                            avctx->get_buffer2 == avcodec_default_get_buffer2);
 FF_ENABLE_DEPRECATION_WARNINGS
 
-    if (!f->f->data[0])
+    if (!f->f->buf[0])
         return;
 
     if (avctx->debug & FF_DEBUG_BUFFERS)