avfilter/f_metadata: correct check for existing metadata

When adding metadata, existing dictionary need not be present.
5 years ago · c95dfe5cce
parent 7fc28465df
commit c95dfe5cce
1 changed files with 1 additions and 1 deletions
--- 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,