diff --git a/av_transport/av_trans_control_center/test/fuzztest/onstreamreceived_fuzzer/BUILD.gn b/av_transport/av_trans_control_center/test/fuzztest/onstreamreceived_fuzzer/BUILD.gn
index e33b703ccedd2cd42b6030b6cb9373f8827a1de7..64631566c75e54e3b75de1a15f2ee01c1f890ea0 100644
--- a/av_transport/av_trans_control_center/test/fuzztest/onstreamreceived_fuzzer/BUILD.gn
+++ b/av_transport/av_trans_control_center/test/fuzztest/onstreamreceived_fuzzer/BUILD.gn
@@ -55,7 +55,7 @@ ohos_fuzztest("OnStreamReceivedFuzzTest") {
 ohos_fuzztest("OnBytesReceivedFuzzTest") {
   module_out_path = fuzz_test_output_path
   fuzz_config_file =
-      "${control_center_path}/test/fuzztest/onstreamreceived_fuzzer"
+      "${control_center_path}/test/fuzztest/onbytesreceived_fuzzer"
 
   include_dirs = [
     "include",
@@ -90,7 +90,7 @@ ohos_fuzztest("OnBytesReceivedFuzzTest") {
 ohos_fuzztest("OnSoftbusTimeSyncResultFuzzTest") {
   module_out_path = fuzz_test_output_path
   fuzz_config_file =
-      "${control_center_path}/test/fuzztest/onstreamreceived_fuzzer"
+      "${control_center_path}/test/fuzztest/onsoftbustimesyncresult_fuzzer"
 
   include_dirs = [
     "include",
@@ -125,7 +125,7 @@ ohos_fuzztest("OnSoftbusTimeSyncResultFuzzTest") {
 ohos_fuzztest("AVTransOnSessionClosedFuzzTest") {
   module_out_path = fuzz_test_output_path
   fuzz_config_file =
-      "${control_center_path}/test/fuzztest/onstreamreceived_fuzzer"
+      "${control_center_path}/test/fuzztest/avtransonsessionclosed_fuzzer"
 
   include_dirs = [
     "include",
@@ -140,7 +140,7 @@ ohos_fuzztest("AVTransOnSessionClosedFuzzTest") {
     "-Wno-unused-variable",
     "-fno-omit-frame-pointer",
   ]
-  sources = [ "avtransOnSessionClosed_fuzzer.cpp" ]
+  sources = [ "avtransonsessionclosed_fuzzer.cpp" ]
 
   deps = [ "${engine_path}/av_sender:distributed_av_sender" ]
 
diff --git a/av_transport/av_trans_control_center/test/fuzztest/onstreamreceived_fuzzer/avtransOnSessionClosed_fuzzer.cpp b/av_transport/av_trans_control_center/test/fuzztest/onstreamreceived_fuzzer/avtransonsessionclosed_fuzzer.cpp
similarity index 97%
rename from av_transport/av_trans_control_center/test/fuzztest/onstreamreceived_fuzzer/avtransOnSessionClosed_fuzzer.cpp
rename to av_transport/av_trans_control_center/test/fuzztest/onstreamreceived_fuzzer/avtransonsessionclosed_fuzzer.cpp
index d3ac3c65474a738c2f5306a6e2e2534348059e0a..dc775aaf807f5952550fed70544339e3763998e9 100644
--- a/av_transport/av_trans_control_center/test/fuzztest/onstreamreceived_fuzzer/avtransOnSessionClosed_fuzzer.cpp
+++ b/av_transport/av_trans_control_center/test/fuzztest/onstreamreceived_fuzzer/avtransonsessionclosed_fuzzer.cpp
@@ -13,7 +13,7 @@
  * limitations under the License.
  */
 
-#include "avtransOnSessionClosed_fuzzer.h"
+#include "avtransonsessionclosed_fuzzer.h"
 
 #include <algorithm>
 #include <securec.h>
diff --git a/av_transport/av_trans_control_center/test/fuzztest/onstreamreceived_fuzzer/avtransOnSessionClosed_fuzzer.h b/av_transport/av_trans_control_center/test/fuzztest/onstreamreceived_fuzzer/avtransonsessionclosed_fuzzer.h
similarity index 91%
rename from av_transport/av_trans_control_center/test/fuzztest/onstreamreceived_fuzzer/avtransOnSessionClosed_fuzzer.h
rename to av_transport/av_trans_control_center/test/fuzztest/onstreamreceived_fuzzer/avtransonsessionclosed_fuzzer.h
index 6bc033a675171d17da3468a7ce77f5811149c92f..6e35329561b629481acf881c12c426c48311e967 100644
--- a/av_transport/av_trans_control_center/test/fuzztest/onstreamreceived_fuzzer/avtransOnSessionClosed_fuzzer.h
+++ b/av_transport/av_trans_control_center/test/fuzztest/onstreamreceived_fuzzer/avtransonsessionclosed_fuzzer.h
@@ -16,6 +16,6 @@
 #ifndef TEST_AVTRANSONSESSIONCLOSED_FUZZER_H
 #define TEST_AVTRANSONSESSIONCLOSED_FUZZER_H
 
-#define FUZZ_PROJECT_NAME "avtransOnSessionClosed_fuzzer.cpp"
+#define FUZZ_PROJECT_NAME "avtransonsessionclosed_fuzzer.cpp"
 
 #endif
\ No newline at end of file
diff --git a/av_transport/common/src/av_trans_meta.cpp b/av_transport/common/src/av_trans_meta.cpp
index 0724879b625767b7c3e75ad09adc9fbe4dceac5a..4375e4312e418383d2446f508aa9000fe1c8f2fb 100644
--- a/av_transport/common/src/av_trans_meta.cpp
+++ b/av_transport/common/src/av_trans_meta.cpp
@@ -141,40 +141,31 @@ bool AVTransVideoBufferMeta::UnmarshalVideoMeta(const std::string& jsonStr)
     if (metaJson == nullptr) {
         return false;
     }
+
     cJSON *typeObj = cJSON_GetObjectItemCaseSensitive(metaJson, META_DATA_TYPE.c_str());
-    if (typeObj == nullptr || !IsUInt32(metaJson, META_DATA_TYPE)) {
-        cJSON_Delete(metaJson);
-        return false;
+    if (typeObj != nullptr && IsUInt32(metaJson, META_DATA_TYPE)) {
+        dataType_ = static_cast<BufferDataType>(typeObj->valueint);
     }
-    dataType_ = static_cast<BufferDataType>(typeObj->valueint);
 
     cJSON *timeStampObj = cJSON_GetObjectItemCaseSensitive(metaJson, META_TIMESTAMP.c_str());
-    if (timeStampObj == nullptr || !IsInt64(metaJson, META_TIMESTAMP)) {
-        cJSON_Delete(metaJson);
-        return false;
+    if (timeStampObj != nullptr && IsInt64(metaJson, META_TIMESTAMP)) {
+        pts_ = static_cast<int64_t>(timeStampObj->valueint);
     }
-    pts_ = static_cast<int64_t>(timeStampObj->valueint);
-    
+
     cJSON *numberObj = cJSON_GetObjectItemCaseSensitive(metaJson, META_FRAME_NUMBER.c_str());
-    if (numberObj == nullptr || !IsUInt32(metaJson, META_FRAME_NUMBER)) {
-        cJSON_Delete(metaJson);
-        return false;
+    if (numberObj != nullptr && IsUInt32(metaJson, META_FRAME_NUMBER)) {
+        frameNum_ = static_cast<uint32_t>(numberObj->valueint);
     }
-    frameNum_ = static_cast<uint32_t>(numberObj->valueint);
 
     cJSON *extTimeStampObj = cJSON_GetObjectItemCaseSensitive(metaJson, META_EXT_TIMESTAMP.c_str());
-    if (extTimeStampObj == nullptr || !IsInt64(metaJson, META_EXT_TIMESTAMP)) {
-        cJSON_Delete(metaJson);
-        return false;
+    if (extTimeStampObj != nullptr && IsInt64(metaJson, META_EXT_TIMESTAMP)) {
+        extPts_ = static_cast<int64_t>(extTimeStampObj->valueint);
     }
-    extPts_ = static_cast<int64_t>(extTimeStampObj->valueint);
 
     cJSON *extNumberObj = cJSON_GetObjectItemCaseSensitive(metaJson, META_EXT_FRAME_NUMBER.c_str());
-    if (extNumberObj == nullptr || !IsUInt32(metaJson, META_EXT_FRAME_NUMBER)) {
-        cJSON_Delete(metaJson);
-        return false;
+    if (extNumberObj != nullptr && IsUInt32(metaJson, META_EXT_FRAME_NUMBER)) {
+        extFrameNum_ = static_cast<uint32_t>(extNumberObj->valueint);
     }
-    extFrameNum_ =static_cast<uint32_t>(extNumberObj->valueint);
     cJSON_Delete(metaJson);
     return true;
 }
diff --git a/av_transport/common/src/softbus_channel_adapter.cpp b/av_transport/common/src/softbus_channel_adapter.cpp
index c94fa63e09c4d625ec3822af647c12c363e34afc..5948281d2b33a8fc7e85f3cc65a561cc93c1e92e 100644
--- a/av_transport/common/src/softbus_channel_adapter.cpp
+++ b/av_transport/common/src/softbus_channel_adapter.cpp
@@ -190,7 +190,7 @@ int32_t SoftbusChannelAdapter::CreateChannelServer(const std::string& pkgName, c
     }
     QosTV qos[] = {
         {.qos = QOS_TYPE_MIN_BW,        .value = 40 * 1024 * 1024},
-        {.qos = QOS_TYPE_MAX_LATENCY,       .value = 8000},
+        {.qos = QOS_TYPE_MAX_LATENCY,       .value = 4000},
         {.qos = QOS_TYPE_MIN_LATENCY,       .value = 2000},
     };
 
@@ -276,7 +276,7 @@ int32_t SoftbusChannelAdapter::OpenSoftbusChannel(const std::string &mySessName,
 
     QosTV qos[] = {
         {.qos = QOS_TYPE_MIN_BW,        .value = 40 * 1024 * 1024},
-        {.qos = QOS_TYPE_MAX_LATENCY,       .value = 8000},
+        {.qos = QOS_TYPE_MAX_LATENCY,       .value = 4000},
         {.qos = QOS_TYPE_MIN_LATENCY,       .value = 2000},
     };