When adding metadata, existing dictionary need not be present.
---
libavfilter/f_metadata.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavfilter/f_metadata.c b/libavfilter/f_metadata.c
index bf298e9d39..598257b15b 100644
--- a/libavfilter/f_metadata.c
+++ b/libavfilter/f_metadata.c
@@ -304,7 +304,7 @@ static int filter_frame(AVFilterLink *inlink, AVFrame
*frame)
AVDictionary **metadata = &frame->metadata;
AVDictionaryEntry *e;
- if (!*metadata)
+ if (!*metadata && s->mode != METADATA_ADD)
return ff_filter_frame(outlink, frame);
e = av_dict_get(*metadata, !s->key ? "" : s->key, NULL,
--
2.24.1
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