From 5c93e57f5c07b52f04363c178c4fc1892c0d71aa Mon Sep 17 00:00:00 2001
From: wm4 <nfxjfg@googlemail.com>
Date: Mon, 21 Sep 2015 13:43:32 +0200
Subject: [PATCH] avformat/vobsub: do not attempt to check duplicate subtitles
Some .idx files actually contain duplicate subtitle events:
timestamp: 00:07:52:600, filepos: 00004e800
timestamp: 00:07:52:600, filepos: 00004f800
The second will be dropped, because it has same pts, duration, and text
(the text is just a dummy empty string; the real data is retrieved when
actually reading vobsub subtitle packets).
Dropping this is probably not intended/safe, so avoid it.
See trac issue #4872 for a sample. This patch doesn't fix decoding of
the sample, though.
---
libavformat/mpeg.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/libavformat/mpeg.c b/libavformat/mpeg.c
index a63b5672a3d..55f2b3fb687 100644
--- a/libavformat/mpeg.c
+++ b/libavformat/mpeg.c
@@ -857,6 +857,7 @@ static int vobsub_read_header(AVFormatContext *s)
for (i = 0; i < s->nb_streams; i++) {
vobsub->q[i].sort = SUB_SORT_POS_TS;
+ vobsub->q[i].keep_duplicates = 1;
ff_subtitles_queue_finalize(s, &vobsub->q[i]);
}
--
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