diff --git a/fftools/cmdutils.c b/fftools/cmdutils.c
index a8f5c6d89b..9cdf92ff37 100644
--- a/fftools/cmdutils.c
+++ b/fftools/cmdutils.c
@@ -1146,3 +1146,23 @@ char *file_read(const char *filename)
         return NULL;
     return str;
 }
+
+void remove_avoptions(AVDictionary **a, AVDictionary *b)
+{
+    const AVDictionaryEntry *t = NULL;
+
+    while ((t = av_dict_iterate(b, t))) {
+        av_dict_set(a, t->key, NULL, AV_DICT_MATCH_CASE);
+    }
+}
+
+int check_avoptions(AVDictionary *m)
+{
+    const AVDictionaryEntry *t = av_dict_iterate(m, NULL);
+    if (t) {
+        av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
+        return AVERROR_OPTION_NOT_FOUND;
+    }
+
+    return 0;
+}
diff --git a/fftools/cmdutils.h b/fftools/cmdutils.h
index d0c773663b..2125f791d0 100644
--- a/fftools/cmdutils.h
+++ b/fftools/cmdutils.h
@@ -483,4 +483,10 @@ double get_rotation(const int32_t *displaymatrix);
 /* read file contents into a string */
 char *file_read(const char *filename);
 
+/* Remove keys in dictionary b from dictionary a */
+void remove_avoptions(AVDictionary **a, AVDictionary *b);
+
+/* Check if any keys exist in dictionary m */
+int check_avoptions(AVDictionary *m);
+
 #endif /* FFTOOLS_CMDUTILS_H */
diff --git a/fftools/ffmpeg.c b/fftools/ffmpeg.c
index c86fd5065e..88ce3007e8 100644
--- a/fftools/ffmpeg.c
+++ b/fftools/ffmpeg.c
@@ -473,26 +473,6 @@ const FrameData *packet_data_c(AVPacket *pkt)
     return ret < 0 ? NULL : (const FrameData*)pkt->opaque_ref->data;
 }
 
-void remove_avoptions(AVDictionary **a, AVDictionary *b)
-{
-    const AVDictionaryEntry *t = NULL;
-
-    while ((t = av_dict_iterate(b, t))) {
-        av_dict_set(a, t->key, NULL, AV_DICT_MATCH_CASE);
-    }
-}
-
-int check_avoptions(AVDictionary *m)
-{
-    const AVDictionaryEntry *t = av_dict_iterate(m, NULL);
-    if (t) {
-        av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
-        return AVERROR_OPTION_NOT_FOUND;
-    }
-
-    return 0;
-}
-
 void update_benchmark(const char *fmt, ...)
 {
     if (do_benchmark_all) {
diff --git a/fftools/ffmpeg.h b/fftools/ffmpeg.h
index 885a7c0c10..fe75706afd 100644
--- a/fftools/ffmpeg.h
+++ b/fftools/ffmpeg.h
@@ -710,9 +710,6 @@ void term_exit(void);
 
 void show_usage(void);
 
-void remove_avoptions(AVDictionary **a, AVDictionary *b);
-int check_avoptions(AVDictionary *m);
-
 int assert_file_overwrite(const char *filename);
 AVDictionary *strip_specifiers(const AVDictionary *dict);
 int find_codec(void *logctx, const char *name,