From 20502ba92a5936bc6a6e006d05828b750f4290ed Mon Sep 17 00:00:00 2001
From: Mark Thompson <sw@jkqxz.net>
Date: Sat, 17 May 2025 12:07:17 +0100
Subject: [PATCH] ffmpeg: Don't print graphs if there are no outputs yet

Avoids writing an empty json blob in setup error cases.
---
 fftools/ffmpeg.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fftools/ffmpeg.c b/fftools/ffmpeg.c
index 964770df23..bd6f22e421 100644
--- a/fftools/ffmpeg.c
+++ b/fftools/ffmpeg.c
@@ -309,7 +309,7 @@ const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
 
 static void ffmpeg_cleanup(int ret)
 {
-    if (print_graphs || print_graphs_file)
+    if ((print_graphs || print_graphs_file) && nb_output_files > 0)
         print_filtergraphs(filtergraphs, nb_filtergraphs, input_files, nb_input_files, output_files, nb_output_files);
 
     if (do_benchmark) {