diff --git a/doc/APIchanges b/doc/APIchanges
index d739895..663bab1 100644
--- a/doc/APIchanges
+++ b/doc/APIchanges
@@ -15,6 +15,11 @@ libavutil:     2015-08-28
 
 API changes, most recent first:
 
+2017-02-10 - xxxxxxx - lavu 55.48.100 / 55.33.0 - spherical.h
+  Add AV_SPHERICAL_EQUIRECTANGULAR_TILE, and projection-specific properties
+  (bound_left, bound_top, bound_right, bound_bottom, padding) to
+  AVSphericalMapping.
+
 2017-02-13 - xxxxxxx - lavc 57.80.100 - avcodec.h
   Add AVCodecContext.hw_device_ctx.
 
diff --git a/ffprobe.c b/ffprobe.c
index 046f080..acda9bc 100644
--- a/ffprobe.c
+++ b/ffprobe.c
@@ -1788,9 +1788,16 @@ static void print_pkt_side_data(WriterContext *w,
             const AVSphericalMapping *spherical = (AVSphericalMapping *)sd->data;
             if (spherical->projection == AV_SPHERICAL_EQUIRECTANGULAR)
                 print_str("projection", "equirectangular");
-            else if (spherical->projection == AV_SPHERICAL_CUBEMAP)
+            else if (spherical->projection == AV_SPHERICAL_CUBEMAP) {
                 print_str("projection", "cubemap");
-            else
+                print_int("padding", spherical->padding);
+            } else if (spherical->projection == AV_SPHERICAL_EQUIRECTANGULAR_TILE) {
+                print_str("projection", "tiled equirectangular");
+                print_int("bound_left", spherical->bound_left);
+                print_int("bound_top", spherical->bound_top);
+                print_int("bound_right", spherical->bound_right);
+                print_int("bound_bottom", spherical->bound_bottom);
+            } else
                 print_str("projection", "unknown");
 
             print_int("yaw", (double) spherical->yaw / (1 << 16));
diff --git a/libavformat/dump.c b/libavformat/dump.c
index d9aa3af..ae93c7a 100644
--- a/libavformat/dump.c
+++ b/libavformat/dump.c
@@ -357,6 +357,8 @@ static void dump_spherical(void *ctx, AVPacketSideData *sd)
         av_log(ctx, AV_LOG_INFO, "equirectangular ");
     else if (spherical->projection == AV_SPHERICAL_CUBEMAP)
         av_log(ctx, AV_LOG_INFO, "cubemap ");
+    else if (spherical->projection == AV_SPHERICAL_EQUIRECTANGULAR_TILE)
+        av_log(ctx, AV_LOG_INFO, "tiled equirectangular ");
     else {
         av_log(ctx, AV_LOG_WARNING, "unknown");
         return;
@@ -366,6 +368,14 @@ static void dump_spherical(void *ctx, AVPacketSideData *sd)
     pitch = ((double)spherical->pitch) / (1 << 16);
     roll = ((double)spherical->roll) / (1 << 16);
     av_log(ctx, AV_LOG_INFO, "(%f/%f/%f) ", yaw, pitch, roll);
+
+    if (spherical->projection == AV_SPHERICAL_EQUIRECTANGULAR_TILE) {
+        av_log(ctx, AV_LOG_INFO, "[%zu, %zu, %zu, %zu] ",
+               spherical->bound_left, spherical->bound_top,
+               spherical->bound_right, spherical->bound_bottom);
+    } else if (spherical->projection == AV_SPHERICAL_CUBEMAP) {
+        av_log(ctx, AV_LOG_INFO, "[pad %zu] ", spherical->padding);
+    }
 }
 
 static void dump_sidedata(void *ctx, AVStream *st, const char *indent)
diff --git a/libavutil/spherical.h b/libavutil/spherical.h
index eeda625..3c9f3a5 100644
--- a/libavutil/spherical.h
+++ b/libavutil/spherical.h
@@ -63,6 +63,13 @@ enum AVSphericalProjection {
      * to the back.
      */
     AV_SPHERICAL_CUBEMAP,
+
+    /**
+     * Video represents a portion of a sphere mapped on a flat surface
+     * using equirectangular projection. The @ref bounding fields indicate
+     * the position of the current video in a larger surface.
+     */
+    AV_SPHERICAL_EQUIRECTANGULAR_TILE,
 };
 
 /**
@@ -122,6 +129,55 @@ typedef struct AVSphericalMapping {
     /**
      * @}
      */
+
+    /**
+     * @name Bounding rectangle
+     * @anchor bounding
+     * @{
+     * These fields indicate the location of the current tile, and where
+     * it should be mapped relative to the original surface.
+     *
+     * @code{.unparsed}
+     *      +----------------+----------+
+     *      |                |bound_top |
+     *      |            +--------+     |
+     *      | bound_left |tile    |     |
+     *      +<---------->|        |<--->+bound_right
+     *      |            +--------+     |
+     *      |                |          |
+     *      |    bound_bottom|          |
+     *      +----------------+----------+
+     * @endcode
+     *
+     * If needed, the original video surface dimensions can be derived
+     * by adding the current stream or frame size to the related bounds,
+     * like in the following example:
+     *
+     * @code{c}
+     *     original_width  = tile->width  + bound_left + bound_right;
+     *     original_height = tile->height + bound_top  + bound_bottom;
+     * @endcode
+     *
+     * @note These values are valid only for the tiled equirectangular
+     *       projection type (@ref AV_SPHERICAL_EQUIRECTANGULAR_TILE),
+     *       and should be ignored in all other cases.
+     */
+    size_t bound_left;   ///< Distance in pixels from the left edge
+    size_t bound_top;    ///< Distance in pixels from the top edge
+    size_t bound_right;  ///< Distance in pixels from the right edge
+    size_t bound_bottom; ///< Distance in pixels from the bottom edge
+    /**
+     * @}
+     */
+
+    /**
+     * Amount of pixel to pad from the edge of each cube face.
+     *
+     * @note This value is valid for only for the cubemap projection type
+     *       (@ref AV_SPHERICAL_CUBEMAP), and should be ignored in all other
+     *       cases.
+     */
+    size_t padding;
 } AVSphericalMapping;
 
 /**
diff --git a/libavutil/version.h b/libavutil/version.h
index a8b00bf..4d5a405 100644
--- a/libavutil/version.h
+++ b/libavutil/version.h
@@ -79,7 +79,7 @@
  */
 
 #define LIBAVUTIL_VERSION_MAJOR  55
-#define LIBAVUTIL_VERSION_MINOR  47
+#define LIBAVUTIL_VERSION_MINOR  48
 #define LIBAVUTIL_VERSION_MICRO 100
 
 #define LIBAVUTIL_VERSION_INT   AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \
diff --git a/tests/ref/fate/matroska-spherical-mono b/tests/ref/fate/matroska-spherical-mono
index 9f4b4f8..8048aff 100644
--- a/tests/ref/fate/matroska-spherical-mono
+++ b/tests/ref/fate/matroska-spherical-mono
@@ -7,7 +7,7 @@ inverted=0
 [/SIDE_DATA]
 [SIDE_DATA]
 side_data_type=Spherical Mapping
-side_data_size=16
+side_data_size=56
 projection=equirectangular
 yaw=45
 pitch=30
diff --git a/tests/ref/fate/mov-spherical-mono b/tests/ref/fate/mov-spherical-mono
index 9f4b4f8..8048aff 100644
--- a/tests/ref/fate/mov-spherical-mono
+++ b/tests/ref/fate/mov-spherical-mono
@@ -7,7 +7,7 @@ inverted=0
 [/SIDE_DATA]
 [SIDE_DATA]
 side_data_type=Spherical Mapping
-side_data_size=16
+side_data_size=56
 projection=equirectangular
 yaw=45
 pitch=30
