diff --git a/services/media_engine/plugins/source/http_source/dash/dash_segment_downloader.cpp b/services/media_engine/plugins/source/http_source/dash/dash_segment_downloader.cpp
index b73f4ef7a..3fb4e80ae 100644
--- a/services/media_engine/plugins/source/http_source/dash/dash_segment_downloader.cpp
+++ b/services/media_engine/plugins/source/http_source/dash/dash_segment_downloader.cpp
@@ -356,6 +356,8 @@ int32_t DashSegmentDownloader::GetWaterLineAbove()
         } else {
             waterLineAbove = static_cast<int32_t>(DEFAULT_MIN_CACHE_TIME * realTimeBitBate_ / BYTES_TO_BIT);
         }
+        int32_t maxWaterLineAbove = static_cast<int32_t>(ringBufferCapcity_ / 2);
+        waterLineAbove = waterLineAbove > maxWaterLineAbove ? maxWaterLineAbove : waterLineAbove;
         int32_t minWaterLineAbove = 2 * PLAY_WATER_LINE;
         waterLineAbove = waterLineAbove < minWaterLineAbove ? minWaterLineAbove : waterLineAbove;
     }
@@ -370,7 +372,7 @@ void DashSegmentDownloader::CalculateBitRate(size_t fragmentSize, double duratio
         return;
     }
 
-    realTimeBitBate_ = static_cast<int64_t>(fragmentSize * BYTES_TO_BIT) / duration;
+    realTimeBitBate_ = static_cast<int64_t>(fragmentSize * BYTES_TO_BIT * SECOND_TO_MILLIONSECOND) / duration;
     MEDIA_LOG_I("CalculateBitRate streamId: " PUBLIC_LOG_D32 " realTimeBitBate: "
         PUBLIC_LOG_D64, streamId_, realTimeBitBate_);
 }
@@ -1015,12 +1017,6 @@ void DashSegmentDownloader::UpdateDownloadFinished(const std::string& url, const
     } else {
         downloadSpeed_ = 0;
     }
-    if (downloadRequest_ != nullptr) {
-        size_t fragmentSize = downloadRequest_->GetFileContentLength();
-        double duration = downloadRequest_->GetDuration();
-        CalculateBitRate(fragmentSize, duration);
-        downloadBiteRate_ = downloadRequest_->GetBitRate();
-    }
 
     if (initSegment != nullptr && initSegment->writeState_ == INIT_SEGMENT_STATE_USING) {
         MEDIA_LOG_I("UpdateDownloadFinished:streamId:" PUBLIC_LOG_D32 ", writeState:"
@@ -1038,6 +1034,12 @@ void DashSegmentDownloader::UpdateDownloadFinished(const std::string& url, const
         if (mediaSegment_->contentLength_ == 0 && downloadRequest_ != nullptr) {
             mediaSegment_->contentLength_ = downloadRequest_->GetFileContentLength();
         }
+        if (downloadRequest_ != nullptr) {
+            size_t fragmentSize = mediaSegment_->contentLength_;
+            double duration = downloadRequest_->GetDuration();
+            CalculateBitRate(fragmentSize, duration);
+            downloadBiteRate_ = downloadRequest_->GetBitRate();
+        }
         mediaSegment_->isEos_ = true;
         if (mediaSegment_->isLast_) {
             MEDIA_LOG_I("AllSegmentFinish streamId: " PUBLIC_LOG_D32 " download complete", streamId_);
diff --git a/services/media_engine/plugins/source/http_source/dash/include/utils/time_utils.h b/services/media_engine/plugins/source/http_source/dash/include/utils/time_utils.h
index a55090a9b..d30fa69c8 100644
--- a/services/media_engine/plugins/source/http_source/dash/include/utils/time_utils.h
+++ b/services/media_engine/plugins/source/http_source/dash/include/utils/time_utils.h
@@ -43,16 +43,6 @@ constexpr int64_t MS_2_NS = MS_2_US * US_2_NS;
 constexpr int64_t S_2_NS = S_2_MS * MS_2_NS;
 
 constexpr int64_t MEDIA_PTS_UNSET = INT64_MIN + 1;
-
-class TimeUtils {
-public:
-    static int64_t GetBootTimeMs();
-    static int64_t GetBootTimeUs();
-    static int64_t GetMonotonicTimeMs();
-    static int64_t GetMonotonicTimeUs();
-    static int64_t GetCurrentTimeMs();
-};
-
 } // namespace HttpPluginLite
 } // namespace Plugin
 } // namespace Media