1 files changed, 1 insertions, 0 deletions
diff --git a/avconv.h b/avconv.h
index 84fabf6371..be8ef23e51 100644
--- a/avconv.h
+++ b/avconv.h
@@ -449,6 +449,7 @@ int guess_input_channel_layout(InputStream *ist);
 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);