From 83affcde5124601a9dc6ad149bf5dbdb569fc10b Mon Sep 17 00:00:00 2001
From: Nicolas George <nicolas.george@normalesup.org>
Date: Sun, 24 Mar 2013 15:52:28 +0100
Subject: [PATCH] lavc: use packet duration for subtitles if necessary.
Fix trac ticket #2397.
---
libavcodec/utils.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/libavcodec/utils.c b/libavcodec/utils.c
index 064b473c867..76f7e8e1424 100644
--- a/libavcodec/utils.c
+++ b/libavcodec/utils.c
@@ -2229,6 +2229,14 @@ int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
ret = avctx->codec->decode(avctx, sub, got_sub_ptr, &pkt_recoded);
av_assert1((ret >= 0) >= !!*got_sub_ptr &&
!!*got_sub_ptr >= !!sub->num_rects);
+
+ if (sub->num_rects && !sub->end_display_time && avpkt->duration &&
+ avctx->pkt_timebase.num) {
+ AVRational ms = { 1, 1000 };
+ sub->end_display_time = av_rescale_q(avpkt->duration,
+ avctx->pkt_timebase, ms);
+ }
+
if (tmp.data != pkt_recoded.data) { // did we recode?
/* prevent from destroying side data from original packet */
pkt_recoded.side_data = NULL;
--
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