diff --git a/examples/encoder_tmpl.c b/examples/encoder_tmpl.c
index 38aa664..c301767 100644
--- a/examples/encoder_tmpl.c
+++ b/examples/encoder_tmpl.c
@@ -127,7 +127,7 @@
     height = strtol(argv[2], NULL, 0);
     if(width < 16 || width%2 || height <16 || height%2)
         die("Invalid resolution: %ldx%ld", width, height);
-    if(!vpx_img_alloc(&raw, IMG_FMT_YV12, width, height, 1))
+    if(!vpx_img_alloc(&raw, VPX_IMG_FMT_YV12, width, height, 1))
         die("Faile to allocate image", width, height);
     if(!(outfile = fopen(argv[4], "wb")))
         die("Failed to open %s for writing", argv[4]);
diff --git a/ivfenc.c b/ivfenc.c
index 6295a04..7922358 100644
--- a/ivfenc.c
+++ b/ivfenc.c
@@ -247,10 +247,10 @@
         switch (plane)
         {
         case 1:
-            ptr = img->planes[img->fmt==IMG_FMT_YV12? PLANE_V : PLANE_U];
+            ptr = img->planes[img->fmt==VPX_IMG_FMT_YV12? PLANE_V : PLANE_U];
             break;
         case 2:
-            ptr = img->planes[img->fmt==IMG_FMT_YV12?PLANE_U : PLANE_V];
+            ptr = img->planes[img->fmt==VPX_IMG_FMT_YV12?PLANE_U : PLANE_V];
             break;
         default:
             ptr = img->planes[plane];
@@ -869,7 +869,7 @@
         SHOW(kf_max_dist);
     }
 
-    vpx_img_alloc(&raw, arg_use_i420 ? IMG_FMT_I420 : IMG_FMT_YV12,
+    vpx_img_alloc(&raw, arg_use_i420 ? VPX_IMG_FMT_I420 : VPX_IMG_FMT_YV12,
                   cfg.g_w, cfg.g_h, 1);
 
     // This was added so that ivfenc will create monotically increasing
diff --git a/vp8/vp8_cx_iface.c b/vp8/vp8_cx_iface.c
index e129ec9..737e627 100644
--- a/vp8/vp8_cx_iface.c
+++ b/vp8/vp8_cx_iface.c
@@ -211,10 +211,10 @@
 {
     switch (img->fmt)
     {
-    case IMG_FMT_YV12:
-    case IMG_FMT_I420:
-    case IMG_FMT_VPXI420:
-    case IMG_FMT_VPXYV12:
+    case VPX_IMG_FMT_YV12:
+    case VPX_IMG_FMT_I420:
+    case VPX_IMG_FMT_VPXI420:
+    case VPX_IMG_FMT_VPXYV12:
         break;
     default:
         ERROR("Invalid image format. Only YV12 and I420 images are supported");
@@ -549,7 +549,7 @@
     yv12->uv_stride = img->stride[PLANE_U];
 
     yv12->border  = (img->stride[PLANE_Y] - img->w) / 2;
-    yv12->clrtype = (img->fmt == IMG_FMT_VPXI420 || img->fmt == IMG_FMT_VPXYV12); //REG_YUV = 0
+    yv12->clrtype = (img->fmt == VPX_IMG_FMT_VPXI420 || img->fmt == VPX_IMG_FMT_VPXYV12); //REG_YUV = 0
     return res;
 }
 
@@ -846,7 +846,7 @@
     {
 
         /*
-        vpx_img_wrap(&ctx->preview_img, IMG_FMT_YV12,
+        vpx_img_wrap(&ctx->preview_img, VPX_IMG_FMT_YV12,
             sd.y_width + 2*VP8BORDERINPIXELS,
             sd.y_height + 2*VP8BORDERINPIXELS,
             1,
@@ -862,9 +862,9 @@
         ctx->preview_img.planes[PLANE_V] = sd.v_buffer;
 
         if (sd.clrtype == REG_YUV)
-            ctx->preview_img.fmt = IMG_FMT_I420;
+            ctx->preview_img.fmt = VPX_IMG_FMT_I420;
         else
-            ctx->preview_img.fmt = IMG_FMT_VPXI420;
+            ctx->preview_img.fmt = VPX_IMG_FMT_VPXI420;
 
         ctx->preview_img.x_chroma_shift = 1;
         ctx->preview_img.y_chroma_shift = 1;
diff --git a/vp8/vp8_dx_iface.c b/vp8/vp8_dx_iface.c
index 3e6cdf4..8aaa52c 100644
--- a/vp8/vp8_dx_iface.c
+++ b/vp8/vp8_dx_iface.c
@@ -434,7 +434,7 @@
             unsigned int a_w = (sd.y_width + 15) & ~15;
             unsigned int a_h = (sd.y_height + 15) & ~15;
 
-            vpx_img_wrap(&ctx->img, IMG_FMT_I420,
+            vpx_img_wrap(&ctx->img, VPX_IMG_FMT_I420,
                          a_w + 2 * VP8BORDERINPIXELS,
                          a_h + 2 * VP8BORDERINPIXELS,
                          1,
@@ -570,7 +570,7 @@
     yv12->uv_stride = img->stride[PLANE_U];
 
     yv12->border  = (img->stride[PLANE_Y] - img->d_w) / 2;
-    yv12->clrtype = (img->fmt == IMG_FMT_VPXI420 || img->fmt == IMG_FMT_VPXYV12);
+    yv12->clrtype = (img->fmt == VPX_IMG_FMT_VPXI420 || img->fmt == VPX_IMG_FMT_VPXYV12);
 
     return res;
 }
diff --git a/vpx_codec/src/vpx_image.c b/vpx_codec/src/vpx_image.c
index 8a16e58..b104024 100644
--- a/vpx_codec/src/vpx_image.c
+++ b/vpx_codec/src/vpx_image.c
@@ -13,7 +13,7 @@
 #include "vpx_codec/vpx_image.h"
 
 static vpx_image_t *img_alloc_helper(vpx_image_t  *img,
-                                     img_fmt_t     fmt,
+                                     vpx_img_fmt_t fmt,
                                      unsigned int  d_w,
                                      unsigned int  d_h,
                                      unsigned int  stride_align,
@@ -34,29 +34,29 @@
     /* Get sample size for this format */
     switch (fmt)
     {
-    case IMG_FMT_RGB32:
-    case IMG_FMT_RGB32_LE:
-    case IMG_FMT_ARGB:
-    case IMG_FMT_ARGB_LE:
+    case VPX_IMG_FMT_RGB32:
+    case VPX_IMG_FMT_RGB32_LE:
+    case VPX_IMG_FMT_ARGB:
+    case VPX_IMG_FMT_ARGB_LE:
         bps = 32;
         break;
-    case IMG_FMT_RGB24:
-    case IMG_FMT_BGR24:
+    case VPX_IMG_FMT_RGB24:
+    case VPX_IMG_FMT_BGR24:
         bps = 24;
         break;
-    case IMG_FMT_RGB565:
-    case IMG_FMT_RGB565_LE:
-    case IMG_FMT_RGB555:
-    case IMG_FMT_RGB555_LE:
-    case IMG_FMT_UYVY:
-    case IMG_FMT_YUY2:
-    case IMG_FMT_YVYU:
+    case VPX_IMG_FMT_RGB565:
+    case VPX_IMG_FMT_RGB565_LE:
+    case VPX_IMG_FMT_RGB555:
+    case VPX_IMG_FMT_RGB555_LE:
+    case VPX_IMG_FMT_UYVY:
+    case VPX_IMG_FMT_YUY2:
+    case VPX_IMG_FMT_YVYU:
         bps = 16;
         break;
-    case IMG_FMT_I420:
-    case IMG_FMT_YV12:
-    case IMG_FMT_VPXI420:
-    case IMG_FMT_VPXYV12:
+    case VPX_IMG_FMT_I420:
+    case VPX_IMG_FMT_YV12:
+    case VPX_IMG_FMT_VPXI420:
+    case VPX_IMG_FMT_VPXYV12:
         bps = 12;
         break;
     default:
@@ -67,10 +67,10 @@
     /* Get chroma shift values for this format */
     switch (fmt)
     {
-    case IMG_FMT_I420:
-    case IMG_FMT_YV12:
-    case IMG_FMT_VPXI420:
-    case IMG_FMT_VPXYV12:
+    case VPX_IMG_FMT_I420:
+    case VPX_IMG_FMT_YV12:
+    case VPX_IMG_FMT_VPXI420:
+    case VPX_IMG_FMT_VPXYV12:
         xcs = 1;
         break;
     default:
@@ -80,10 +80,10 @@
 
     switch (fmt)
     {
-    case IMG_FMT_I420:
-    case IMG_FMT_YV12:
-    case IMG_FMT_VPXI420:
-    case IMG_FMT_VPXYV12:
+    case VPX_IMG_FMT_I420:
+    case VPX_IMG_FMT_YV12:
+    case VPX_IMG_FMT_VPXI420:
+    case VPX_IMG_FMT_VPXYV12:
         ycs = 1;
         break;
     default:
@@ -96,7 +96,7 @@
     w = (d_w + align) & ~align;
     align = (1 << ycs) - 1;
     h = (d_h + align) & ~align;
-    s = (fmt & IMG_FMT_PLANAR) ? w : bps * w / 8;
+    s = (fmt & VPX_IMG_FMT_PLANAR) ? w : bps * w / 8;
     s = (s + stride_align - 1) & ~(stride_align - 1);
 
     /* Allocate the new image */
@@ -118,7 +118,7 @@
 
     if (!img_data)
     {
-        img->img_data = malloc((fmt & IMG_FMT_PLANAR) ? h * w * bps / 8 : h * s);
+        img->img_data = malloc((fmt & VPX_IMG_FMT_PLANAR) ? h * w * bps / 8 : h * s);
         img->img_data_owner = 1;
     }
 
@@ -146,7 +146,7 @@
 }
 
 vpx_image_t *vpx_img_alloc(vpx_image_t  *img,
-                           img_fmt_t     fmt,
+                           vpx_img_fmt_t fmt,
                            unsigned int  d_w,
                            unsigned int  d_h,
                            unsigned int  stride_align)
@@ -155,7 +155,7 @@
 }
 
 vpx_image_t *vpx_img_wrap(vpx_image_t  *img,
-                          img_fmt_t     fmt,
+                          vpx_img_fmt_t fmt,
                           unsigned int  d_w,
                           unsigned int  d_h,
                           unsigned int  stride_align,
@@ -178,7 +178,7 @@
         img->d_h = h;
 
         /* Calculate plane pointers */
-        if (!(img->fmt & IMG_FMT_PLANAR))
+        if (!(img->fmt & VPX_IMG_FMT_PLANAR))
         {
             img->planes[PLANE_PACKED] =
                 img->img_data + x * img->bps / 8 + y * img->stride[PLANE_PACKED];
@@ -187,7 +187,7 @@
         {
             data = img->img_data;
 
-            if (img->fmt & IMG_FMT_HAS_ALPHA)
+            if (img->fmt & VPX_IMG_FMT_HAS_ALPHA)
             {
                 img->planes[PLANE_ALPHA] =
                     data + x + y * img->stride[PLANE_ALPHA];
@@ -197,7 +197,7 @@
             img->planes[PLANE_Y] = data + x + y * img->stride[PLANE_Y];
             data += img->h * img->stride[PLANE_Y];
 
-            if (!(img->fmt & IMG_FMT_UV_FLIP))
+            if (!(img->fmt & VPX_IMG_FMT_UV_FLIP))
             {
                 img->planes[PLANE_U] = data
                                        + (x >> img->x_chroma_shift)
diff --git a/vpx_codec/vpx_image.h b/vpx_codec/vpx_image.h
index 09def8f..a25999c 100644
--- a/vpx_codec/vpx_image.h
+++ b/vpx_codec/vpx_image.h
@@ -30,39 +30,39 @@
 #define VPX_IMAGE_ABI_VERSION (1) /**<\hideinitializer*/
 
 
-#define IMG_FMT_PLANAR     0x100  /**< Image is a planar format */
-#define IMG_FMT_UV_FLIP    0x200  /**< V plane precedes U plane in memory */
-#define IMG_FMT_HAS_ALPHA  0x400  /**< Image has an alpha channel componnent */
+#define VPX_IMG_FMT_PLANAR     0x100  /**< Image is a planar format */
+#define VPX_IMG_FMT_UV_FLIP    0x200  /**< V plane precedes U plane in memory */
+#define VPX_IMG_FMT_HAS_ALPHA  0x400  /**< Image has an alpha channel componnent */
 
 
     /*!\brief List of supported image formats */
-    typedef enum img_fmt {
-        IMG_FMT_NONE,
-        IMG_FMT_RGB24,   /**< 24 bit per pixel packed RGB */
-        IMG_FMT_RGB32,   /**< 32 bit per pixel packed 0RGB */
-        IMG_FMT_RGB565,  /**< 16 bit per pixel, 565 */
-        IMG_FMT_RGB555,  /**< 16 bit per pixel, 555 */
-        IMG_FMT_UYVY,    /**< UYVY packed YUV */
-        IMG_FMT_YUY2,    /**< YUYV packed YUV */
-        IMG_FMT_YVYU,    /**< YVYU packed YUV */
-        IMG_FMT_BGR24,   /**< 24 bit per pixel packed BGR */
-        IMG_FMT_RGB32_LE, /**< 32 bit packed BGR0 */
-        IMG_FMT_ARGB,     /**< 32 bit packed ARGB, alpha=255 */
-        IMG_FMT_ARGB_LE,  /**< 32 bit packed BGRA, alpha=255 */
-        IMG_FMT_RGB565_LE,  /**< 16 bit per pixel, gggbbbbb rrrrrggg */
-        IMG_FMT_RGB555_LE,  /**< 16 bit per pixel, gggbbbbb 0rrrrrgg */
-        IMG_FMT_YV12    = IMG_FMT_PLANAR | IMG_FMT_UV_FLIP | 1, /**< planar YVU */
-        IMG_FMT_I420    = IMG_FMT_PLANAR | 2,
-        IMG_FMT_VPXYV12 = IMG_FMT_PLANAR | IMG_FMT_UV_FLIP | 3, /** < planar 4:2:0 format with vpx color space */
-        IMG_FMT_VPXI420 = IMG_FMT_PLANAR | 4,  /** < planar 4:2:0 format with vpx color space */
+    typedef enum vpx_img_fmt {
+        VPX_IMG_FMT_NONE,
+        VPX_IMG_FMT_RGB24,   /**< 24 bit per pixel packed RGB */
+        VPX_IMG_FMT_RGB32,   /**< 32 bit per pixel packed 0RGB */
+        VPX_IMG_FMT_RGB565,  /**< 16 bit per pixel, 565 */
+        VPX_IMG_FMT_RGB555,  /**< 16 bit per pixel, 555 */
+        VPX_IMG_FMT_UYVY,    /**< UYVY packed YUV */
+        VPX_IMG_FMT_YUY2,    /**< YUYV packed YUV */
+        VPX_IMG_FMT_YVYU,    /**< YVYU packed YUV */
+        VPX_IMG_FMT_BGR24,   /**< 24 bit per pixel packed BGR */
+        VPX_IMG_FMT_RGB32_LE, /**< 32 bit packed BGR0 */
+        VPX_IMG_FMT_ARGB,     /**< 32 bit packed ARGB, alpha=255 */
+        VPX_IMG_FMT_ARGB_LE,  /**< 32 bit packed BGRA, alpha=255 */
+        VPX_IMG_FMT_RGB565_LE,  /**< 16 bit per pixel, gggbbbbb rrrrrggg */
+        VPX_IMG_FMT_RGB555_LE,  /**< 16 bit per pixel, gggbbbbb 0rrrrrgg */
+        VPX_IMG_FMT_YV12    = VPX_IMG_FMT_PLANAR | VPX_IMG_FMT_UV_FLIP | 1, /**< planar YVU */
+        VPX_IMG_FMT_I420    = VPX_IMG_FMT_PLANAR | 2,
+        VPX_IMG_FMT_VPXYV12 = VPX_IMG_FMT_PLANAR | VPX_IMG_FMT_UV_FLIP | 3, /** < planar 4:2:0 format with vpx color space */
+        VPX_IMG_FMT_VPXI420 = VPX_IMG_FMT_PLANAR | 4,  /** < planar 4:2:0 format with vpx color space */
     }
-    img_fmt_t; /**< alias for enum img_fmt */
+    vpx_img_fmt_t; /**< alias for enum vpx_img_fmt */
 
 
     /**\brief Image Descriptor */
     typedef struct vpx_image
     {
-        img_fmt_t     fmt; /**< Image Format */
+        vpx_img_fmt_t fmt; /**< Image Format */
 
         /* Image storage dimensions */
         unsigned int  w;   /**< Stored image width */
@@ -126,7 +126,7 @@
      *         returned.
      */
     vpx_image_t *vpx_img_alloc(vpx_image_t  *img,
-                               img_fmt_t fmt,
+                               vpx_img_fmt_t fmt,
                                unsigned int d_w,
                                unsigned int d_h,
                                unsigned int align);
@@ -151,7 +151,7 @@
      *         returned.
      */
     vpx_image_t *vpx_img_wrap(vpx_image_t  *img,
-                              img_fmt_t fmt,
+                              vpx_img_fmt_t fmt,
                               unsigned int d_w,
                               unsigned int d_h,
                               unsigned int align,