1 files changed, 1 insertions, 0 deletions
diff --git a/ffmpeg.h b/ffmpeg.h
index f09d33bdcf..69edb6260a 100644
--- a/ffmpeg.h
+++ b/ffmpeg.h
@@ -573,6 +573,7 @@ void choose_sample_fmt(AVStream *st, AVCodec *codec);
 int configure_filtergraph(FilterGraph *fg);
 int configure_output_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out);
 int ist_in_filtergraph(FilterGraph *fg, InputStream *ist);
+int filtergraph_is_simple(FilterGraph *fg);
 FilterGraph *init_simple_filtergraph(InputStream *ist, OutputStream *ost);
 int init_complex_filtergraph(FilterGraph *fg);