diff --git a/app/build.gradle b/app/build.gradle
index 8bbd684..91422ad 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -38,5 +38,5 @@ dependencies {
     androidTestImplementation 'androidx.test.ext:junit:1.1.5'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.1'
 
-    implementation 'com.github.pedroSG94.rtmp-rtsp-stream-client-java:rtplibrary:2.2.6'
+    implementation 'com.github.pedroSG94.rtmp-rtsp-stream-client-java:rtplibrary:a813c206292cea0767d9cb091f14c87ca9afdc9e'
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/jerryxiao/droidcast/ScreenCapService.java b/app/src/main/java/com/jerryxiao/droidcast/ScreenCapService.java
index a45c0e2..449ca62 100644
--- a/app/src/main/java/com/jerryxiao/droidcast/ScreenCapService.java
+++ b/app/src/main/java/com/jerryxiao/droidcast/ScreenCapService.java
@@ -190,8 +190,13 @@ public class ScreenCapService extends Service {
         if (screenCapDisplay instanceof RtmpDisplay d) {
             d.setWriteChunkSize(prefs.getInt("write_chunk_size_int", 1024));
         }
+        if (screenCapDisplay instanceof RtmpDisplay d) {
+            d.setVideoCodec(prefs.getBoolean("enable_h265", false) ? com.pedro.rtmp.rtmp.VideoCodec.H265 : com.pedro.rtmp.rtmp.VideoCodec.H264);
+        }
+        else if (screenCapDisplay instanceof RtspDisplay d) {
+            d.setVideoCodec(prefs.getBoolean("enable_h265", false) ? com.pedro.rtsp.rtsp.VideoCodec.H265 : com.pedro.rtsp.rtsp.VideoCodec.H264);
+        }
         screenCapDisplay.setReTries(prefs.getInt("retries_int", 0));
-        screenCapDisplay.resizeCache(prefs.getInt("cache_size_int", 120));
         screenCapDisplay.setLogs(prefs.getBoolean("enable_lib_logs", true));
         if (prefs.getBoolean("use_gl", true) && prefs.getBoolean("use_force_render", true)) {
             screenCapDisplay.getGlInterface().setForceRender(true);
@@ -215,7 +220,7 @@ public class ScreenCapService extends Service {
         }
         Log.d(TAG, String.format("capture width %d height %d", video_width, video_height));
         if (this.screenCapDisplay.prepareInternalAudio(Integer.parseInt(prefs.getString("audio_bitrate", "131072")), 48000, prefs.getBoolean("stereo_audio", true), false, false) &&
-                this.screenCapDisplay.prepareVideo(video_width, video_height, Integer.parseInt(prefs.getString("fps", "30")), Integer.parseInt(prefs.getString("video_bitrate", "10485760")), 0, 320, -1, -1, 2)) {
+                this.screenCapDisplay.prepareVideo(video_width, video_height, Integer.parseInt(prefs.getString("fps", "30")), Integer.parseInt(prefs.getString("video_bitrate", "10485760")), 0, 320)) {
             this.screenCapDisplay.startStream(server);
         }
         else {
diff --git a/app/src/main/res/values-zh-rCN/strings.xml b/app/src/main/res/values-zh-rCN/strings.xml
index 8c0cbbb..a37fb02 100644
--- a/app/src/main/res/values-zh-rCN/strings.xml
+++ b/app/src/main/res/values-zh-rCN/strings.xml
@@ -16,7 +16,6 @@
     <string name="network_header">网络设置</string>
     <string name="video_bitrate_title">视频比特率</string>
     <string name="audio_bitrate_title">音频比特率</string>
-    <string name="hint_rtmp">rtmp://</string>
     <string name="start_button">开始</string>
     <string name="stop_button">停止</string>
     <string name="settings_button">设置</string>
@@ -37,4 +36,6 @@
     <string name="button_ok">好</string>
     <string name="misc_header">杂项</string>
     <string name="enable_lib_logs_title">开启库日志</string>
+    <string name="enable_h265_title">开启 H.265</string>
+    <string name="h265_warning">并非所有服务器均支持 h265 推流</string>
 </resources>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index ee3c8da..1344c92 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -17,7 +17,6 @@
     <string name="video_bitrate_title">Video Bitrate (bps)</string>
     <string name="audio_bitrate_title">Audio Bitrate</string>
 
-    <string name="hint_rtmp">rtmp://</string>
     <string name="start_button">Start</string>
     <string name="stop_button">Stop</string>
     <string name="settings_button">Settings</string>
@@ -41,4 +40,6 @@
     <string name="button_ok">OK</string>
     <string name="misc_header">Misc</string>
     <string name="enable_lib_logs_title">Enable library logs</string>
+    <string name="enable_h265_title">Enable H.265</string>
+    <string name="h265_warning">Only a few servers support h265 rtmp streaming</string>
 </resources>
\ No newline at end of file
diff --git a/app/src/main/res/xml/preferences.xml b/app/src/main/res/xml/preferences.xml
index 83adfd6..1300b43 100644
--- a/app/src/main/res/xml/preferences.xml
+++ b/app/src/main/res/xml/preferences.xml
@@ -32,6 +32,12 @@
             app:title="@string/fps_title"
             app:useSimpleSummaryProvider="true" />
 
+        <SwitchPreferenceCompat
+            app:key="enable_h265"
+            app:title="@string/enable_h265_title"
+            app:summaryOn="@string/h265_warning"
+            app:defaultValue="false" />
+
         <SwitchPreferenceCompat
             app:key="stereo_audio"
             app:title="@string/stereo_audio_title"