Avoid the creation of files which cannot be successfully decoded by
ffmpeg, for example generated with:
ffmpeg -f lavfi -i sine -af
"aselect='not(between(t,100,500))',aresample=min_comp=0.001:min_hard_comp=0.100000"
-acodec pcm_s16le -t 1000 -y out_audio.flv
---
libavformat/flvenc.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/libavformat/flvenc.c b/libavformat/flvenc.c
index 31a5c9e..939e663 100644
--- a/libavformat/flvenc.c
+++ b/libavformat/flvenc.c
@@ -548,6 +548,12 @@ static int flv_write_packet(AVFormatContext *s, AVPacket
*pkt)
if (sc->last_ts < ts)
sc->last_ts = ts;
+ if (size + flags_size >= 1<<24) {
+ av_log(s, AV_LOG_ERROR, "Too large packet with size %u >= %u\n",
+ size + flags_size, 1<<24);
+ return AVERROR(EINVAL);
+ }
+
avio_wb24(pb, size + flags_size);
avio_wb24(pb, ts & 0xFFFFFF);
avio_w8(pb, (ts >> 24) & 0x7F); // timestamps are 32 bits _signed_
--
1.8.3.2
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