diff --git a/libavfilter/af_amix.c b/libavfilter/af_amix.c
index d33d96ba6e..8f8ae3e340 100644
--- a/libavfilter/af_amix.c
+++ b/libavfilter/af_amix.c
@@ -497,7 +497,7 @@ static int init(AVFilterContext *ctx, const char *args, void *opaque)
         pad.name           = av_strdup(name);
         pad.filter_samples = filter_samples;
 
-        avfilter_insert_inpad(ctx, i, &pad);
+        ff_insert_inpad(ctx, i, &pad);
     }
 
     return 0;
diff --git a/libavfilter/avfilter.c b/libavfilter/avfilter.c
index 8594b8365c..6b73e48d81 100644
--- a/libavfilter/avfilter.c
+++ b/libavfilter/avfilter.c
@@ -44,9 +44,9 @@ const char *avfilter_license(void)
     return LICENSE_PREFIX LIBAV_LICENSE + sizeof(LICENSE_PREFIX) - 1;
 }
 
-void avfilter_insert_pad(unsigned idx, unsigned *count, size_t padidx_off,
-                         AVFilterPad **pads, AVFilterLink ***links,
-                         AVFilterPad *newpad)
+void ff_insert_pad(unsigned idx, unsigned *count, size_t padidx_off,
+                   AVFilterPad **pads, AVFilterLink ***links,
+                   AVFilterPad *newpad)
 {
     unsigned i;
 
@@ -426,4 +426,22 @@ int avfilter_default_config_output_link(AVFilterLink *link)
 {
     return 0;
 }
+void avfilter_insert_pad(unsigned idx, unsigned *count, size_t padidx_off,
+                         AVFilterPad **pads, AVFilterLink ***links,
+                         AVFilterPad *newpad)
+{
+    ff_insert_pad(idx, count, padidx_off, pads, links, newpad);
+}
+void avfilter_insert_inpad(AVFilterContext *f, unsigned index,
+                           AVFilterPad *p)
+{
+    ff_insert_pad(index, &f->input_count, offsetof(AVFilterLink, dstpad),
+                  &f->input_pads, &f->inputs, p);
+}
+void avfilter_insert_outpad(AVFilterContext *f, unsigned index,
+                            AVFilterPad *p)
+{
+    ff_insert_pad(index, &f->output_count, offsetof(AVFilterLink, srcpad),
+                  &f->output_pads, &f->outputs, p);
+}
 #endif
diff --git a/libavfilter/avfilter.h b/libavfilter/avfilter.h
index 37e783e41e..0f5a35fc73 100644
--- a/libavfilter/avfilter.h
+++ b/libavfilter/avfilter.h
@@ -749,38 +749,19 @@ void avfilter_free(AVFilterContext *filter);
 int avfilter_insert_filter(AVFilterLink *link, AVFilterContext *filt,
                            unsigned filt_srcpad_idx, unsigned filt_dstpad_idx);
 
-/**
- * Insert a new pad.
- *
- * @param idx Insertion point. Pad is inserted at the end if this point
- *            is beyond the end of the list of pads.
- * @param count Pointer to the number of pads in the list
- * @param padidx_off Offset within an AVFilterLink structure to the element
- *                   to increment when inserting a new pad causes link
- *                   numbering to change
- * @param pads Pointer to the pointer to the beginning of the list of pads
- * @param links Pointer to the pointer to the beginning of the list of links
- * @param newpad The new pad to add. A copy is made when adding.
- */
+#if FF_API_FILTERS_PUBLIC
+attribute_deprecated
 void avfilter_insert_pad(unsigned idx, unsigned *count, size_t padidx_off,
                          AVFilterPad **pads, AVFilterLink ***links,
                          AVFilterPad *newpad);
 
-/** Insert a new input pad for the filter. */
-static inline void avfilter_insert_inpad(AVFilterContext *f, unsigned index,
-                                         AVFilterPad *p)
-{
-    avfilter_insert_pad(index, &f->input_count, offsetof(AVFilterLink, dstpad),
-                        &f->input_pads, &f->inputs, p);
-}
-
-/** Insert a new output pad for the filter. */
-static inline void avfilter_insert_outpad(AVFilterContext *f, unsigned index,
-                                          AVFilterPad *p)
-{
-    avfilter_insert_pad(index, &f->output_count, offsetof(AVFilterLink, srcpad),
-                        &f->output_pads, &f->outputs, p);
-}
+attribute_deprecated
+void avfilter_insert_inpad(AVFilterContext *f, unsigned index,
+                           AVFilterPad *p);
+attribute_deprecated
+void avfilter_insert_outpad(AVFilterContext *f, unsigned index,
+                            AVFilterPad *p);
+#endif
 
 /**
  * Copy the frame properties of src to dst, without copying the actual
diff --git a/libavfilter/internal.h b/libavfilter/internal.h
index 4eb65305f9..7f7cf45771 100644
--- a/libavfilter/internal.h
+++ b/libavfilter/internal.h
@@ -36,4 +36,37 @@ int ff_fmt_is_in(int fmt, const int *fmts);
 
 void ff_dlog_link(void *ctx, AVFilterLink *link, int end);
 
+/**
+ * Insert a new pad.
+ *
+ * @param idx Insertion point. Pad is inserted at the end if this point
+ *            is beyond the end of the list of pads.
+ * @param count Pointer to the number of pads in the list
+ * @param padidx_off Offset within an AVFilterLink structure to the element
+ *                   to increment when inserting a new pad causes link
+ *                   numbering to change
+ * @param pads Pointer to the pointer to the beginning of the list of pads
+ * @param links Pointer to the pointer to the beginning of the list of links
+ * @param newpad The new pad to add. A copy is made when adding.
+ */
+void ff_insert_pad(unsigned idx, unsigned *count, size_t padidx_off,
+                   AVFilterPad **pads, AVFilterLink ***links,
+                   AVFilterPad *newpad);
+
+/** Insert a new input pad for the filter. */
+static inline void ff_insert_inpad(AVFilterContext *f, unsigned index,
+                                   AVFilterPad *p)
+{
+    ff_insert_pad(index, &f->input_count, offsetof(AVFilterLink, dstpad),
+                  &f->input_pads, &f->inputs, p);
+}
+
+/** Insert a new output pad for the filter. */
+static inline void ff_insert_outpad(AVFilterContext *f, unsigned index,
+                                    AVFilterPad *p)
+{
+    ff_insert_pad(index, &f->output_count, offsetof(AVFilterLink, srcpad),
+                  &f->output_pads, &f->outputs, p);
+}
+
 #endif /* AVFILTER_INTERNAL_H */
diff --git a/libavfilter/split.c b/libavfilter/split.c
index da33b7d183..9f7890cde6 100644
--- a/libavfilter/split.c
+++ b/libavfilter/split.c
@@ -25,6 +25,7 @@
 
 #include "avfilter.h"
 #include "audio.h"
+#include "internal.h"
 #include "video.h"
 
 static int split_init(AVFilterContext *ctx, const char *args, void *opaque)
@@ -48,7 +49,7 @@ static int split_init(AVFilterContext *ctx, const char *args, void *opaque)
         pad.type = ctx->filter->inputs[0].type;
         pad.name = av_strdup(name);
 
-        avfilter_insert_outpad(ctx, i, &pad);
+        ff_insert_outpad(ctx, i, &pad);
     }
 
     return 0;