From b9493e0cc0dc8fb5f7a08e1d78dd4f63a11b2c13 Mon Sep 17 00:00:00 2001
From: Paul B Mahol <onemda@gmail.com>
Date: Thu, 24 Feb 2022 21:44:52 +0100
Subject: [PATCH] avfilter/vf_tmidequalizer: check that frame is valid

---
 libavfilter/vf_tmidequalizer.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libavfilter/vf_tmidequalizer.c b/libavfilter/vf_tmidequalizer.c
index f92c5a90a9..b5d497b637 100644
--- a/libavfilter/vf_tmidequalizer.c
+++ b/libavfilter/vf_tmidequalizer.c
@@ -178,6 +178,8 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *in)
         } else {
             s->l_frames++;
         }
+        if (!s->frames[idx])
+            return AVERROR_EOF;
         in = av_frame_clone(s->frames[idx]);
         if (!in)
             return AVERROR(ENOMEM);