From ae84484c78740c1c814276c3d5c9f7601abed936 Mon Sep 17 00:00:00 2001
From: Anton Khirnov <anton@khirnov.net>
Date: Tue, 16 Aug 2022 16:26:11 +0200
Subject: [PATCH] lavfi/avf_aphasemeter: set frame durations

The filter is supposed to produce CFR output.
---
 libavfilter/avf_aphasemeter.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libavfilter/avf_aphasemeter.c b/libavfilter/avf_aphasemeter.c
index 3501e62825..0f7692982c 100644
--- a/libavfilter/avf_aphasemeter.c
+++ b/libavfilter/avf_aphasemeter.c
@@ -327,6 +327,8 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *in)
         AVFrame *clone;
 
         s->out->pts = in->pts;
+        s->out->duration = av_rescale_q(1, av_inv_q(outlink->frame_rate), outlink->time_base);
+
         clone = av_frame_clone(s->out);
         if (!clone)
             return AVERROR(ENOMEM);