From: Gyan Doshi <ffmpeg@gyani.pro>
Date: Fri, 17 Jan 2020 10:09:51 +0000 (+0530)
Subject: avfilter/f_metadata: correct check for existing metadata
X-Git-Url: https://git.sesse.net/?a=commitdiff_plain;h=c95dfe5cce98cde3e7fb14fbd04b3897f3927cec;p=ffmpeg

avfilter/f_metadata: correct check for existing metadata

When adding metadata, existing dictionary need not be present.
---

diff --git a/libavfilter/f_metadata.c b/libavfilter/f_metadata.c
index bf298e9d395..598257b15b8 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,