diff --git a/src/Rtsp/Rtsp.cpp b/src/Rtsp/Rtsp.cpp
index 984dfe4e..492eb644 100644
--- a/src/Rtsp/Rtsp.cpp
+++ b/src/Rtsp/Rtsp.cpp
@@ -188,7 +188,7 @@ void SdpParser::load(const string &sdp) {
                     char rtp[16] = {0}, type[16];
                     if (4 == sscanf(opt_val.data(), " %15[^ ] %d %15[^ ] %d", type, &port, rtp, &pt)) {
                         track->_pt = pt;
-                        track->_samplerate = RtpPayload::getClockRate(pt) ;
+                        track->_samplerate = RtpPayload::getClockRate(pt);
                         track->_channel = RtpPayload::getAudioChannel(pt);
                         track->_type = toTrackType(type);
                         track->_m = opt_val;
@@ -223,14 +223,14 @@ void SdpParser::load(const string &sdp) {
                 if (strcmp(start, "now") == 0) {
                     strcpy(start, "0");
                 }
-                track._start = (float)atof(start);
-                track._end = (float)atof(end);
+                track._start = (float) atof(start);
+                track._end = (float) atof(end);
                 track._duration = track._end - track._start;
             }
         }
 
         it = track._attr.find("rtpmap");
-        if(it != track._attr.end()){
+        if (it != track._attr.end()) {
             auto rtpmap = it->second;
             int pt, samplerate, channel;
             char codec[16] = {0};
@@ -239,20 +239,24 @@ void SdpParser::load(const string &sdp) {
                 track._codec = codec;
                 track._samplerate = samplerate;
                 track._channel = channel;
-            }else if (3 == sscanf(rtpmap.data(), "%d %15[^/]/%d", &pt, codec, &samplerate)) {
+            } else if (3 == sscanf(rtpmap.data(), "%d %15[^/]/%d", &pt, codec, &samplerate)) {
                 track._pt = pt;
                 track._codec = codec;
                 track._samplerate = samplerate;
             }
+            if (!track._samplerate && track._type == TrackVideo) {
+                //未设置视频采样率时，赋值为90000
+                track._samplerate = 90000;
+            }
         }
 
         it = track._attr.find("fmtp");
-        if(it != track._attr.end()) {
+        if (it != track._attr.end()) {
             track._fmtp = it->second;
         }
 
         it = track._attr.find("control");
-        if(it != track._attr.end()) {
+        if (it != track._attr.end()) {
             track._control = it->second;
         }
     }