diff --git a/ext-codec/G711.cpp b/ext-codec/G711.cpp
index 0ea6c762..a456f8bc 100644
--- a/ext-codec/G711.cpp
+++ b/ext-codec/G711.cpp
@@ -38,7 +38,7 @@ CodecId getCodecU() {
 }
 
 Track::Ptr getTrackByCodecId_l(CodecId codec, int sample_rate, int channels, int sample_bit) {
-    return (sample_rate && channels && sample_bit) ? std::make_shared<G711Track>(codec, sample_rate, channels, sample_bit) : nullptr;
+    return std::make_shared<G711Track>(codec, sample_rate, 1, 16);
 }
 
 Track::Ptr getTrackByCodecIdA(int sample_rate, int channels, int sample_bit) {
diff --git a/src/Extension/Factory.h b/src/Extension/Factory.h
index 7f7bdceb..c97a77ec 100644
--- a/src/Extension/Factory.h
+++ b/src/Extension/Factory.h
@@ -65,7 +65,7 @@ public:
      
      * [AUTO-TRANSLATED:397b982e]
      */
-    static Track::Ptr getTrackByCodecId(CodecId codecId, int sample_rate = 0, int channels = 0, int sample_bit = 0);
+    static Track::Ptr getTrackByCodecId(CodecId codecId, int sample_rate = 0, int channels = 1, int sample_bit = 16);
 
     // //////////////////////////////rtsp相关//////////////////////////////////  [AUTO-TRANSLATED:884055ec]
     // //////////////////////////////rtsp相关//////////////////////////////////