From aef2ae65afb70d135551467d2d7276555552660f Mon Sep 17 00:00:00 2001
From: xiongziliang <771730766@qq.com>
Date: Sat, 12 Mar 2022 19:29:58 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BC=98=E5=8C=96=E4=BB=A3=E7=A0=81?=
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---
 webrtc/Sdp.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/webrtc/Sdp.cpp b/webrtc/Sdp.cpp
index c517d4e2..06554fa5 100644
--- a/webrtc/Sdp.cpp
+++ b/webrtc/Sdp.cpp
@@ -1146,8 +1146,8 @@ RtcSessionSdp::Ptr RtcSession::toRtcSessionSdp() const{
             {
                 //添加a=msid字段
                 if (!m.rtp_rtx_ssrc.empty()) {
-                    auto msid = std::make_shared<SdpAttrMsid>();
                     if (!m.rtp_rtx_ssrc[0].msid.empty()) {
+                        auto msid = std::make_shared<SdpAttrMsid>();
                         msid->parse(m.rtp_rtx_ssrc[0].msid);
                         sdp_media.items.emplace_back(wrapSdpAttr(std::move(msid)));
                     }