ffmpeg | branch: master | Paul B Mahol <one...@gmail.com> | Thu Nov 17 01:11:36 
2022 +0100| [07357e56a64530b2bba976a49719a38f46e92f01] | committer: Paul B Mahol

avfilter/avf_showspectrum: fix possible hang at EOF

May happen when using filter fps option.

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=07357e56a64530b2bba976a49719a38f46e92f01
---

 libavfilter/avf_showspectrum.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/libavfilter/avf_showspectrum.c b/libavfilter/avf_showspectrum.c
index b111471116..8e9597cdf6 100644
--- a/libavfilter/avf_showspectrum.c
+++ b/libavfilter/avf_showspectrum.c
@@ -1537,7 +1537,9 @@ static int plot_spectrum_column(AVFilterLink *inlink, 
AVFrame *insamples)
     }
 
     if (!s->single_pic && (s->sliding != FULLFRAME || s->xpos == 0)) {
-        if (s->old_pts < outpicref->pts || s->sliding == FULLFRAME) {
+        if (s->old_pts < outpicref->pts || s->sliding == FULLFRAME ||
+            (ff_outlink_get_status(inlink) == AVERROR_EOF &&
+             ff_inlink_queued_samples(inlink) <= s->hop_size)) {
             AVFrame *clone;
 
             if (s->legend) {

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