Hi!
Not sure if this really helps but ffmpeg can duplicate an enormous
amount of frames without any notice to the user.
Please comment, Carl Eugen
From fdecd0309a111d2faca2fcffc95583276a4e826f Mon Sep 17 00:00:00 2001
From: Carl Eugen Hoyos <ceho...@ag.or.at>
Date: Fri, 4 Nov 2016 00:16:51 +0100
Subject: [PATCH] ffmpeg: Warn if thousands of frames are duplicated.
Fixes ticket #5194.
---
ffmpeg.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/ffmpeg.c b/ffmpeg.c
index 3b91710..130ae8a 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];
@@ -1134,6 +1135,10 @@ 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;
--
1.7.10.4
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