@@ -132,7 +132,7 @@ static int query_formats(AVFilterGraph *graph, AVClass *log_ctx)

                     char scale_args[256];

                     /* couldn't merge format lists. auto-insert scale filter */

                     snprintf(inst_name, sizeof(inst_name), "auto-inserted scaler %d",

-                             scaler_count);

+                             scaler_count++);

                     scale =

                         avfilter_open(avfilter_get_by_name("scale"),inst_name);