diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index d844170c16..6ba2ac982a 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -3370,19 +3370,6 @@ int avcodec_get_pix_fmt_loss(enum PixelFormat dst_pix_fmt, enum PixelFormat src_
 enum PixelFormat avcodec_find_best_pix_fmt(int64_t pix_fmt_mask, enum PixelFormat src_pix_fmt,
                               int has_alpha, int *loss_ptr);
 
-#if FF_API_GET_ALPHA_INFO
-#define FF_ALPHA_TRANSP       0x0001 /* image has some totally transparent pixels */
-#define FF_ALPHA_SEMI_TRANSP  0x0002 /* image has some transparent pixels */
-
-/**
- * Tell if an image really has transparent alpha values.
- * @return ored mask of FF_ALPHA_xxx constants
- */
-attribute_deprecated
-int img_get_alpha_info(const AVPicture *src,
-                       enum PixelFormat pix_fmt, int width, int height);
-#endif
-
 /* deinterlace a picture */
 /* deinterlace - if not supported return -1 */
 int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
diff --git a/libavcodec/imgconvert.c b/libavcodec/imgconvert.c
index eeffc3f133..07b7edfd52 100644
--- a/libavcodec/imgconvert.c
+++ b/libavcodec/imgconvert.c
@@ -855,55 +855,6 @@ int av_picture_pad(AVPicture *dst, const AVPicture *src, int height, int width,
     return 0;
 }
 
-#if FF_API_GET_ALPHA_INFO
-/* NOTE: we scan all the pixels to have an exact information */
-static int get_alpha_info_pal8(const AVPicture *src, int width, int height)
-{
-    const unsigned char *p;
-    int src_wrap, ret, x, y;
-    unsigned int a;
-    uint32_t *palette = (uint32_t *)src->data[1];
-
-    p = src->data[0];
-    src_wrap = src->linesize[0] - width;
-    ret = 0;
-    for(y=0;y<height;y++) {
-        for(x=0;x<width;x++) {
-            a = palette[p[0]] >> 24;
-            if (a == 0x00) {
-                ret |= FF_ALPHA_TRANSP;
-            } else if (a != 0xff) {
-                ret |= FF_ALPHA_SEMI_TRANSP;
-            }
-            p++;
-        }
-        p += src_wrap;
-    }
-    return ret;
-}
-
-int img_get_alpha_info(const AVPicture *src,
-                       enum PixelFormat pix_fmt, int width, int height)
-{
-    const PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
-    int ret;
-
-    /* no alpha can be represented in format */
-    if (!pf->is_alpha)
-        return 0;
-    switch(pix_fmt) {
-    case PIX_FMT_PAL8:
-        ret = get_alpha_info_pal8(src, width, height);
-        break;
-    default:
-        /* we do not know, so everything is indicated */
-        ret = FF_ALPHA_TRANSP | FF_ALPHA_SEMI_TRANSP;
-        break;
-    }
-    return ret;
-}
-#endif
-
 #if !(HAVE_MMX && HAVE_YASM)
 /* filter parameters: [-1 4 2 4 -1] // 8 */
 static void deinterlace_line_c(uint8_t *dst,
diff --git a/libavcodec/version.h b/libavcodec/version.h
index 150c465d55..230f53446f 100644
--- a/libavcodec/version.h
+++ b/libavcodec/version.h
@@ -41,9 +41,6 @@
 #ifndef FF_API_REQUEST_CHANNELS
 #define FF_API_REQUEST_CHANNELS (LIBAVCODEC_VERSION_MAJOR < 55)
 #endif
-#ifndef FF_API_GET_ALPHA_INFO
-#define FF_API_GET_ALPHA_INFO    (LIBAVCODEC_VERSION_MAJOR < 54)
-#endif
 #ifndef FF_API_PARSE_FRAME
 #define FF_API_PARSE_FRAME (LIBAVCODEC_VERSION_MAJOR < 54)
 #endif