From b51e7554e74cbf007a1cab83c7bed3ad9fa2793a Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michael@niedermayer.cc>
Date: Sun, 13 Dec 2015 16:13:22 +0100
Subject: [PATCH] avformat/mxfenc: Do not crash if there is no packet in the
first stream
Fixes: Ticket4914
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
libavformat/mxfenc.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/libavformat/mxfenc.c b/libavformat/mxfenc.c
index 043daff73a..59eed2ec48 100644
--- a/libavformat/mxfenc.c
+++ b/libavformat/mxfenc.c
@@ -2469,6 +2469,10 @@ static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt)
}
mxf->edit_units_count++;
} else if (!mxf->edit_unit_byte_count && st->index == 1) {
+ if (!mxf->edit_units_count) {
+ av_log(s, AV_LOG_ERROR, "No packets in first stream\n");
+ return AVERROR_PATCHWELCOME;
+ }
mxf->index_entries[mxf->edit_units_count-1].slice_offset =
mxf->body_offset - mxf->index_entries[mxf->edit_units_count-1].offset;
}