From 5a4935c012fd3ca7cc0720897cf00c5759307ced Mon Sep 17 00:00:00 2001
From: Carl Eugen Hoyos <cehoyos@ag.or.at>
Date: Fri, 4 Nov 2016 00:16:51 +0100
Subject: [PATCH] ffmpeg: Warn if thousands of frames are duplicated.
Fixes ticket #5193.
---
ffmpeg.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/ffmpeg.c b/ffmpeg.c
index 980987604f..28daf5f674 100644
--- a/ffmpeg.c
+++ b/ffmpeg.c
@@ -126,6 +126,7 @@ static int64_t getmaxrss(void);
static int run_as_daemon = 0;
static int nb_frames_dup = 0;
+static unsigned dup_warning = 1000;
static int nb_frames_drop = 0;
static int64_t decode_error_stat[2];
@@ -1136,6 +1137,10 @@ static void do_video_out(OutputFile *of,
}
nb_frames_dup += nb_frames - (nb0_frames && ost->last_dropped) - (nb_frames > nb0_frames);
av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
+ if (nb_frames_dup > dup_warning) {
+ av_log(NULL, AV_LOG_WARNING, "More than %d frames duplicated\n", dup_warning);
+ dup_warning *= 10;
+ }
}
ost->last_dropped = nb_frames == nb0_frames && next_picture;