fftools: log unconnected filter output label

(cherry picked from commit f25c9cc213c7e3eb585d3339eb775b16921c4d98)

Gbp-Pq: Name 0006-fftools-log-unconnected-filter-output-label.patch

diff --git a/fftools/ffmpeg_filter.c b/fftools/ffmpeg_filter.c
index 2f2b2979328b27ba2b5f98bc6b3fe9bcabf53106..4e3a47e3b6ef44fe61e09145e83d8d68ccd614aa 100644 (file)
--- a/fftools/ffmpeg_filter.c
+++ b/fftools/ffmpeg_filter.c
@@ -1409,7 +1409,9 @@ int fg_finalise_bindings(void)
             OutputFilter *output = fg->outputs[j];
             if (!output->bound) {
                 av_log(fg, AV_LOG_FATAL,
-                       "Filter %s has an unconnected output\n", output->name);
+                       "Filter '%s' has output %d (%s) unconnected\n",
+                       output->name, j,
+                       output->linklabel ? (const char *)output->linklabel : "unlabeled");
                 return AVERROR(EINVAL);
             }
         }