The s->ssrc field is the sender's SSRC, we use ssrc + 1 to get
a collision free "unique" SSRC for ourselves in the RR part.
The SDES block in the RTCP packet should describe ourselves,
not the sender.
This was fixed for the RR part in 952139a3226b, but wasn't
fixed for the SDES part until now.
This could cause some Axis cameras to send RTCP BYE packets
to us due to the SSRC collision.
---
libavformat/rtpdec.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/libavformat/rtpdec.c b/libavformat/rtpdec.c
index 7e8b52a..3442c9b 100644
--- a/libavformat/rtpdec.c
+++ b/libavformat/rtpdec.c
@@ -299,7 +299,7 @@ int ff_rtp_check_and_send_back_rr(RTPDemuxContext *s, int
count)
avio_w8(pb, RTCP_SDES);
len = strlen(s->hostname);
avio_wb16(pb, (6 + len + 3) / 4); /* length in words - 1 */
- avio_wb32(pb, s->ssrc);
+ avio_wb32(pb, s->ssrc + 1);
avio_w8(pb, 0x01);
avio_w8(pb, len);
avio_write(pb, s->hostname, len);
--
1.7.3.1
_______________________________________________
libav-devel mailing list
[email protected]
https://lists.libav.org/mailman/listinfo/libav-devel
