diff --git a/android/app/build.gradle b/android/app/build.gradle
index d3e582f3..f35fed4c 100644
--- a/android/app/build.gradle
+++ b/android/app/build.gradle
@@ -105,7 +105,7 @@ android {
 
     defaultConfig {
         applicationId "com.zsw.huixiang"
-        minSdkVersion 24
+        minSdkVersion 21
         targetSdkVersion 30
         versionCode flutterVersionCode.toInteger()
         versionName flutterVersionName
diff --git a/pubspec.yaml b/pubspec.yaml
index d3ca452b..f6b9acd2 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -105,8 +105,6 @@ dependencies:
 
   mqtt_client: ^9.6.8
 
-  flutter_ffmpeg: ^0.4.2
-
 dev_dependencies:
   flutter_test:
     sdk: flutter