Hi,
the bit format muxer currently segfaults, when it is passed a packet of size 0.
This can be triggered e.g. with:
ffmpeg -y -f lavfi -i sine=duration=0.1 -c:a flac -f bit /dev/null
Attached patch fixes this.
Best regards,
Andreas
>From 6990ac1deb197613bfaffca1d721e94042c68b04 Mon Sep 17 00:00:00 2001
From: Andreas Cadhalpun <andreas.cadhal...@googlemail.com>
Date: Thu, 26 Feb 2015 20:27:30 +0100
Subject: [PATCH] avformat/bit: return early from write_packet if pkt->size is
0
This avoids a null pointer dereference of pkt->data.
Signed-off-by: Andreas Cadhalpun <andreas.cadhal...@googlemail.com>
---
libavformat/bit.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/libavformat/bit.c b/libavformat/bit.c
index 7b807b9..9e9feef 100644
--- a/libavformat/bit.c
+++ b/libavformat/bit.c
@@ -133,6 +133,9 @@ static int write_packet(AVFormatContext *s, AVPacket *pkt)
GetBitContext gb;
int i;
+ if (!pkt->size)
+ return 0;
+
avio_wl16(pb, SYNC_WORD);
avio_wl16(pb, 8 * 10);
--
2.1.4
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