diff --git a/libavcodec/error_resilience.c b/libavcodec/error_resilience.c
index de612d1973..5364940e94 100644
--- a/libavcodec/error_resilience.c
+++ b/libavcodec/error_resilience.c
@@ -42,7 +42,7 @@
  * @param stride the number of MVs to get to the next row
  * @param mv_step the number of MVs per row or column in a macroblock
  */
-static void set_mv_strides(ERContext *s, int *mv_step, int *stride)
+static void set_mv_strides(ERContext *s, ptrdiff_t *mv_step, ptrdiff_t *stride)
 {
     if (s->avctx->codec_id == AV_CODEC_ID_H264) {
         av_assert0(s->quarter_sample);
@@ -95,7 +95,7 @@ static void put_dc(ERContext *s, uint8_t *dest_y, uint8_t *dest_cb,
     }
 }
 
-static void filter181(int16_t *data, int width, int height, int stride)
+static void filter181(int16_t *data, int width, int height, ptrdiff_t stride)
 {
     int x, y;
 
@@ -137,7 +137,7 @@ static void filter181(int16_t *data, int width, int height, int stride)
  * @param h     height in 8 pixel blocks
  */
 static void guess_dc(ERContext *s, int16_t *dc, int w,
-                     int h, int stride, int is_luma)
+                     int h, ptrdiff_t stride, int is_luma)
 {
     int b_x, b_y;
     int16_t  (*col )[4] = av_malloc_array(stride, h*sizeof( int16_t)*4);
@@ -240,9 +240,10 @@ fail:
  * @param h     height in 8 pixel blocks
  */
 static void h_block_filter(ERContext *s, uint8_t *dst, int w,
-                           int h, int stride, int is_luma)
+                           int h, ptrdiff_t stride, int is_luma)
 {
-    int b_x, b_y, mvx_stride, mvy_stride;
+    int b_x, b_y;
+    ptrdiff_t mvx_stride, mvy_stride;
     const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP;
     set_mv_strides(s, &mvx_stride, &mvy_stride);
     mvx_stride >>= is_luma;
@@ -308,9 +309,10 @@ static void h_block_filter(ERContext *s, uint8_t *dst, int w,
  * @param h     height in 8 pixel blocks
  */
 static void v_block_filter(ERContext *s, uint8_t *dst, int w, int h,
-                           int stride, int is_luma)
+                           ptrdiff_t stride, int is_luma)
 {
-    int b_x, b_y, mvx_stride, mvy_stride;
+    int b_x, b_y;
+    ptrdiff_t mvx_stride, mvy_stride;
     const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP;
     set_mv_strides(s, &mvx_stride, &mvy_stride);
     mvx_stride >>= is_luma;
@@ -390,11 +392,12 @@ static void guess_mv(ERContext *s)
 {
     int (*blocklist)[2], (*next_blocklist)[2];
     uint8_t *fixed;
-    const int mb_stride = s->mb_stride;
+    const ptrdiff_t mb_stride = s->mb_stride;
     const int mb_width  = s->mb_width;
     int mb_height = s->mb_height;
     int i, depth, num_avail;
-    int mb_x, mb_y, mot_step, mot_stride;
+    int mb_x, mb_y;
+    ptrdiff_t mot_step, mot_stride;
     int blocklist_length, next_blocklist_length;
 
     if (s->last_pic.f && s->last_pic.f->data[0])
diff --git a/libavcodec/error_resilience.h b/libavcodec/error_resilience.h
index d444ec3a3c..27c2008694 100644
--- a/libavcodec/error_resilience.h
+++ b/libavcodec/error_resilience.h
@@ -57,8 +57,8 @@ typedef struct ERContext {
     int *mb_index2xy;
     int mb_num;
     int mb_width, mb_height;
-    int mb_stride;
-    int b8_stride;
+    ptrdiff_t mb_stride;
+    ptrdiff_t b8_stride;
 
     volatile int error_count;
     int error_occurred;