diff --git a/src/Rtp/Decoder.cpp b/src/Rtp/Decoder.cpp
index e4df841b..dacd3ab5 100644
--- a/src/Rtp/Decoder.cpp
+++ b/src/Rtp/Decoder.cpp
@@ -110,16 +110,18 @@ void DecoderImp::onDecode(int stream, int codecid, int flags, int64_t pts, int64
     if (!ref.first) {
         onTrack(stream, Factory::getTrackByCodecId(codec, 8000, 1, 16));
     }
+    if (!ref.first) {
+        WarnL << "not support codec :" << getCodecName(codec);
+        return;
+    }
     auto frame = Factory::getFrameFromPtr(codec, (char *)data, bytes, dts, pts);
     if (getTrackType(codec) != TrackVideo) {
         onFrame(stream, frame);
         return;
     }
-    if(ref.first){
-        ref.second.inputFrame(frame, [&](uint64_t dts, uint64_t pts, const Buffer::Ptr &buffer, bool) {
-            onFrame(stream, Factory::getFrameFromBuffer(codec, buffer, dts, pts));
-        });
-    }
+    ref.second.inputFrame(frame, [&](uint64_t dts, uint64_t pts, const Buffer::Ptr &buffer, bool) {
+        onFrame(stream, Factory::getFrameFromBuffer(codec, buffer, dts, pts));
+    });
 }
 #else
 void DecoderImp::onDecode(int stream,int codecid,int flags,int64_t pts,int64_t dts,const void *data,size_t bytes) {}