diff --git a/src/media/media_decoder.h b/src/media/media_decoder.h
index 619fdde94552ea99eedaa9e3feca7d0900f4b315..781f9fa6390d53268dcd33ec9032e7450d14495e 100644
--- a/src/media/media_decoder.h
+++ b/src/media/media_decoder.h
@@ -169,7 +169,7 @@ private:
     AVStream *avStream_ = nullptr;
     bool emulateRate_ = false;
     int64_t startTime_;
-    int64_t lastTimestamp_;
+    int64_t lastTimestamp_ {0};
 
     DeviceParams inputParams_;