diff --git a/buildCommon/commonLibConfig.gradle b/buildCommon/commonLibConfig.gradle
index 189a62f..5ab29a3 100644
--- a/buildCommon/commonLibConfig.gradle
+++ b/buildCommon/commonLibConfig.gradle
@@ -13,8 +13,8 @@ project.ext {
     versions = [
             compileSdkVersion      : 33,
             buildToolsVersion      : "33.0.3",
-            minSdkVersion          : 30,
-            targetSdkVersion       : 30,
+            minSdkVersion          : 28,
+            targetSdkVersion       : 28,
             versionCode            : 1,
             versionName            : "1.0",
             jvmTarget              : "1.8",
diff --git a/library-vlc/src/main/java/com/yinuo/library/vlc/encoder/CameraHelper.java b/library-vlc/src/main/java/com/yinuo/library/vlc/encoder/CameraHelper.java
index e466769..6655e46 100644
--- a/library-vlc/src/main/java/com/yinuo/library/vlc/encoder/CameraHelper.java
+++ b/library-vlc/src/main/java/com/yinuo/library/vlc/encoder/CameraHelper.java
@@ -197,7 +197,7 @@ public class CameraHelper {
         }
 
         // Create a media file name
-        SimpleDateFormat format = new SimpleDateFormat("yyyyMMdd_HHmmss", Locale.CHINA);
+        SimpleDateFormat format = new SimpleDateFormat("yyyyMMddHHmmss", Locale.CHINA);
         String timeStamp = format.format(time);
         String endTimeStamp = format.format(time + duration);
         File mediaFile;