diff --git a/apps/android/app/src/main/java/cn/crossdesk/mobile/NativeSession.java b/apps/android/app/src/main/java/cn/crossdesk/mobile/NativeSession.java
index 317d5e2a..0ecc9cfc 100644
--- a/apps/android/app/src/main/java/cn/crossdesk/mobile/NativeSession.java
+++ b/apps/android/app/src/main/java/cn/crossdesk/mobile/NativeSession.java
@@ -195,6 +195,10 @@ final class NativeSession implements AutoCloseable {
                         fail(status >= 0 && status < reasons.length ? reasons[status] : "连接已结束");
                     }
                 } else if (type == 4) {
+                    if(event.optInt("type",-1)==14){
+                        networkStatistics.receiveRemoteEncoder(event.getJSONObject("video_codec").getString("encoder"));
+                        return;
+                    }
                     JSONObject info=event.optJSONObject("host_info");
                     if(info!=null)supportsTextInput=info.optBoolean("supports_text_input",false);
                     ui(() -> {
diff --git a/apps/android/app/src/main/java/cn/crossdesk/mobile/RemoteNetworkStatistics.java b/apps/android/app/src/main/java/cn/crossdesk/mobile/RemoteNetworkStatistics.java
index b447ecf7..a1fe6fb2 100644
--- a/apps/android/app/src/main/java/cn/crossdesk/mobile/RemoteNetworkStatistics.java
+++ b/apps/android/app/src/main/java/cn/crossdesk/mobile/RemoteNetworkStatistics.java
@@ -12,15 +12,18 @@ final class RemoteNetworkStatistics {
     }
     static final class Report {
         final Traffic[] traffic=new Traffic[4];final int mode;final boolean srtp;final double rtt;
+        final String decoder;
         Report(JSONObject json){
             String[] keys={"video","audio","data","total"};
             for(int i=0;i<keys.length;i++){JSONObject item=json.optJSONObject(keys[i]);traffic[i]=item==null?null:new Traffic(item);}
             mode=json.optInt("mode",2);srtp=json.optBoolean("srtp");rtt=json.optDouble("rtt",Double.NaN);
+            decoder=json.optString("decoder","");
         }
     }
     static final class Snapshot {
         final Report report;final int fps,width,height;final double latency,rtt;
-        Snapshot(Report report,int fps,int width,int height,double latency,double rtt){this.report=report;this.fps=fps;this.width=width;this.height=height;this.latency=latency;this.rtt=rtt;}
+        final String remoteEncoder,localDecoder;
+        Snapshot(Report report,int fps,int width,int height,double latency,double rtt,String remoteEncoder,String localDecoder){this.report=report;this.fps=fps;this.width=width;this.height=height;this.latency=latency;this.rtt=rtt;this.remoteEncoder=remoteEncoder;this.localDecoder=localDecoder;}
         String mode(){return report==null?"—":report.mode==0?"P2P 直连":report.mode==1?"TURN 中继":"—";}
         String resolution(){return width>0&&height>0?width+" × "+height:"—";}
         String summary(){
@@ -32,11 +35,13 @@ final class RemoteNetworkStatistics {
         final double time,latency;Frame(double time,double latency){this.time=time;this.latency=latency;}
     }
     private Report report;
+    private String remoteEncoder="";
     private double reportTime,rttTime,averageRtt=Double.NaN;
     private long lastFrameId;
     private int width,height;
     private final ArrayDeque<Frame> frames=new ArrayDeque<>();
     static double now(){return System.nanoTime()/1_000_000_000.0;}
+    synchronized void receiveRemoteEncoder(String encoder){remoteEncoder=encoder;}
     synchronized void receive(Report value,double now){
         report=value;reportTime=now;
         if(!Double.isFinite(value.rtt)||value.rtt<0||value.rtt>2000)return;
@@ -53,7 +58,7 @@ final class RemoteNetworkStatistics {
     synchronized Snapshot snapshot(double now){
         prune(now);double total=0;int count=0;
         for(Frame frame:frames)if(Double.isFinite(frame.latency)){total+=frame.latency;count++;}
-        return new Snapshot(now-reportTime<3?report:null,frames.size(),width,height,count==0?Double.NaN:total/count,now-rttTime<3?averageRtt:Double.NaN);
+        return new Snapshot(now-reportTime<3?report:null,frames.size(),width,height,count==0?Double.NaN:total/count,now-rttTime<3?averageRtt:Double.NaN,remoteEncoder,report==null?"":report.decoder);
     }
     private void prune(double now){while(!frames.isEmpty()&&now-frames.peekFirst().time>=1)frames.removeFirst();}
     static String bitrate(long value){return value<0?"—":value>=1_000_000?String.format(Locale.ROOT,"%.1f Mbps",value/1_000_000.0):value>=1000?String.format(Locale.ROOT,"%.0f Kbps",value/1000.0):value+" bps";}
diff --git a/apps/android/app/src/main/java/cn/crossdesk/mobile/SessionControls.java b/apps/android/app/src/main/java/cn/crossdesk/mobile/SessionControls.java
index bf3ca2e3..6375a2b3 100644
--- a/apps/android/app/src/main/java/cn/crossdesk/mobile/SessionControls.java
+++ b/apps/android/app/src/main/java/cn/crossdesk/mobile/SessionControls.java
@@ -107,7 +107,7 @@ final class SessionControls extends FrameLayout {
     }
     void setMuted(boolean value){muted=value;if(menu!=null&&menuPage.equals("controls"))openMenu("controls");}
     void videoSize(int width,int height){waiting.setVisibility(GONE);positionMouse();}
-    void resetVideoStatistics(){statistics(new RemoteNetworkStatistics.Snapshot(network.report,0,0,0,Double.NaN,network.rtt));}
+    void resetVideoStatistics(){statistics(new RemoteNetworkStatistics.Snapshot(network.report,0,0,0,Double.NaN,network.rtt,network.remoteEncoder,network.localDecoder));}
     void statistics(RemoteNetworkStatistics.Snapshot value){network=value;renderNetwork();}
     void videoSettings(RemoteVideoSettings value){settings=value;renderVideoSettings();}
     void privacyScreen(RemotePrivacyScreen value){privacy=value;renderPrivacy();}
@@ -200,10 +200,12 @@ final class SessionControls extends FrameLayout {
         for(int i=0;i<heading.getChildCount();i++)((TextView)heading.getChildAt(i)).setTextColor(SECONDARY);
         for(int i=0;i<4;i++)trafficRows[i]=trafficRow(body,names[i],trafficCells[i],i==3);
         ui.gap(body,10);ui.divider(body);ui.gap(body,10);
-        String[] titles={"帧率","分辨率","画面延时","连接延时（RTT）","连接方式","媒体加密"};networkDetails=new TextView[titles.length];
-        for(int i=0;i<titles.length;i++){LinearLayout row=ui.row();TextView title=ui.text(titles[i],12,false);title.setTextColor(SECONDARY);row.addView(title,new LinearLayout.LayoutParams(0,-2,1));
+        String[] titles={"帧率","分辨率","画面延时","连接延时（RTT）","连接方式","媒体加密","被控端编码器","控制端解码器"};networkDetails=new TextView[titles.length];
+        for(int i=0;i<titles.length;i++){LinearLayout row=ui.row();TextView title=ui.text(titles[i],12,false);title.setTextColor(SECONDARY);row.addView(title,i>=6?new LinearLayout.LayoutParams(-2,-2):new LinearLayout.LayoutParams(0,-2,1));
             if(i==5){encryptionLock=ui.icon("lock",GREEN);encryptionOpen=ui.icon("unlock",SECONDARY);for(View icon:new View[]{encryptionLock,encryptionOpen}){LinearLayout.LayoutParams p=ui.size(14,14);p.rightMargin=ui.dp(4);row.addView(icon,p);}}
-            TextView value=ui.text("—",12,false);value.setFontFeatureSettings("tnum");row.addView(value);networkDetails[i]=value;body.addView(row);if(i<titles.length-1)ui.gap(body,7);}
+            TextView value=ui.text("—",12,false);value.setFontFeatureSettings("tnum");
+            if(i>=6){value.setGravity(Gravity.END);value.setSingleLine();value.setEllipsize(android.text.TextUtils.TruncateAt.MARQUEE);value.setMarqueeRepeatLimit(-1);value.setSelected(true);LinearLayout.LayoutParams p=new LinearLayout.LayoutParams(0,-2,1);p.leftMargin=ui.dp(8);row.addView(value,p);}else row.addView(value);
+            networkDetails[i]=value;body.addView(row);if(i<titles.length-1)ui.gap(body,7);}
         renderNetwork();
     }
     private LinearLayout trafficRow(LinearLayout body,String title,TextView[] cells,boolean total){
@@ -222,8 +224,9 @@ final class SessionControls extends FrameLayout {
             String in=RemoteNetworkStatistics.bitrate(traffic==null?-1:traffic.inbound),out=RemoteNetworkStatistics.bitrate(traffic==null?-1:traffic.outbound),loss=RemoteNetworkStatistics.loss(traffic==null?Double.NaN:traffic.loss);
             trafficCells[i][0].setText(in);trafficCells[i][1].setText(out);trafficCells[i][2].setText(loss);trafficRows[i].setContentDescription(names[i]+"，接收 "+in+"，发送 "+out+"，丢包率 "+loss);
         }
-        String[] values={network.fps+" FPS",network.resolution(),RemoteNetworkStatistics.latency(network.latency),RemoteNetworkStatistics.latency(network.rtt),network.mode(),network.report==null?"—":network.report.srtp?"SRTP 已启用":"未启用"};
-        for(int i=0;i<values.length;i++)networkDetails[i].setText(values[i]);networkDetails[5].setTextColor(network.report!=null&&network.report.srtp?GREEN:SECONDARY);
+        String[] values={network.fps+" FPS",network.resolution(),RemoteNetworkStatistics.latency(network.latency),RemoteNetworkStatistics.latency(network.rtt),network.mode(),network.report==null?"—":network.report.srtp?"SRTP 已启用":"未启用",network.remoteEncoder.isEmpty()?"—":network.remoteEncoder,network.localDecoder.isEmpty()?"—":network.localDecoder};
+        // Reassigning identical text every statistics tick restarts the marquee.
+        for(int i=0;i<values.length;i++)if(!android.text.TextUtils.equals(networkDetails[i].getText(),values[i]))networkDetails[i].setText(values[i]);networkDetails[5].setTextColor(network.report!=null&&network.report.srtp?GREEN:SECONDARY);
         encryptionLock.setVisibility(network.report!=null&&network.report.srtp?VISIBLE:GONE);encryptionOpen.setVisibility(network.report!=null&&!network.report.srtp?VISIBLE:GONE);
     }
     private int controlColumns(){return getMeasuredHeight()<ui.dp(400)&&getMeasuredWidth()>=ui.dp(400)?4:3;}
diff --git a/apps/android/native/rtc_bridge.cpp b/apps/android/native/rtc_bridge.cpp
index ef2bf779..a0ebbc79 100644
--- a/apps/android/native/rtc_bridge.cpp
+++ b/apps/android/native/rtc_bridge.cpp
@@ -371,6 +371,7 @@ extern "C" JNIEXPORT jboolean JNICALL JNI_METHOD(nConnect)(
 extern "C" JNIEXPORT void JNICALL JNI_METHOD(nReady)(JNIEnv*, jclass, jlong handle) {
   auto* s = From(handle); if (!s || !s->controller) return;
   auto action = MakeHostInformation("CrossDesk Android", {}, true, "1.6.0", HostPlatform::Android);
+  action.i.supports_video_codec_status = true;
   s->Send(kControlStream, action.to_json()); FreeRemoteAction(action);
 }
 extern "C" JNIEXPORT void JNICALL JNI_METHOD(nPointer)(
diff --git a/apps/desktop/src/gui/ui/common.slint b/apps/desktop/src/gui/ui/common.slint
index 761cfc3d..15733234 100644
--- a/apps/desktop/src/gui/ui/common.slint
+++ b/apps/desktop/src/gui/ui/common.slint
@@ -1,5 +1,37 @@
 import { FlatSurface, UiSurface } from "ui_surface.slint";
 import { UiRadius } from "ui_radius.slint";
+
+// Keep codec names readable in narrow status panels without changing row height.
+export component ScrollingText inherits Rectangle {
+    in property <string> text;
+    in property <color> text-color;
+    in property <length> font-size: 11px;
+    in property <int> font-weight: 400;
+    in property <bool> align-right: false;
+    private property <length> distance: max(0px, label.preferred-width - root.width);
+    private property <float> phase: 0;
+    min-width: 0px;
+    clip: true;
+    accessible-role: AccessibleRole.text;
+    accessible-label: root.text;
+    changed text => { root.phase = 0; }
+    changed width => { root.phase = 0; }
+    Timer {
+        interval: 16ms;
+        running: root.visible && root.width > 0px && root.distance > 0px;
+        // 30 logical pixels/second, with a one-second pause at each end.
+        triggered => { root.phase = mod(root.phase + 0.48, root.distance / 1px + 60); }
+    }
+    label := Text {
+        x: root.distance > 0px ? -min(root.distance, max(0, root.phase - 30) * 1px)
+            : root.align-right ? root.width - self.preferred-width : 0px;
+        width: self.preferred-width; height: root.height;
+        text: root.text; color: root.text-color;
+        font-size: root.font-size; font-weight: root.font-weight;
+        wrap: no-wrap; vertical-alignment: center;
+    }
+}
+
 export global FloatingBarStyle {
     out property <length> corner-radius: UiRadius.menu;
 }
diff --git a/apps/desktop/src/gui/ui/gallery_network_dialog.slint b/apps/desktop/src/gui/ui/gallery_network_dialog.slint
index 0f98b7da..e819e0a4 100644
--- a/apps/desktop/src/gui/ui/gallery_network_dialog.slint
+++ b/apps/desktop/src/gui/ui/gallery_network_dialog.slint
@@ -1,7 +1,7 @@
 import { SurfaceSeparator, FlatSurface, UiSurface } from "ui_surface.slint";
 import { UiRadius } from "ui_radius.slint";
 import { GalleryStrings } from "device_strings.slint";
-import { CompactButton } from "common.slint";
+import { CompactButton, ScrollingText } from "common.slint";
 import { ScrollView } from "std-widgets.slint";
 
 export struct GalleryNetworkDevice {
@@ -153,18 +153,26 @@ component NetworkRow inherits Rectangle {
         spacing: 12px;
         Rectangle {
             width: (parent.width - 12px) / 2;
-            Text {
-                width: parent.width; height: parent.height;
-                text: GalleryStrings.tr("被控端编码器  ", "Remote encoder  ", "Удалённый кодер  ") + root.device.encoder;
-                font-size: 10px; color: #586f87; vertical-alignment: center; overflow: elide;
+            encoder-label := Text {
+                height: parent.height; width: self.preferred-width;
+                text: GalleryStrings.tr("被控端编码器  ", "Remote encoder  ", "Удалённый кодер  ");
+                font-size: 10px; color: #586f87; vertical-alignment: center;
+            }
+            ScrollingText {
+                x: encoder-label.width; width: max(0px, parent.width - self.x); height: parent.height;
+                text: root.device.encoder; font-size: 10px; text-color: #586f87;
             }
         }
         Rectangle {
             width: (parent.width - 12px) / 2;
-            Text {
-                width: parent.width; height: parent.height;
-                text: GalleryStrings.tr("控制端解码器  ", "Local decoder  ", "Локальный декодер  ") + root.device.decoder;
-                font-size: 10px; color: #586f87; vertical-alignment: center; overflow: elide;
+            decoder-label := Text {
+                height: parent.height; width: self.preferred-width;
+                text: GalleryStrings.tr("控制端解码器  ", "Local decoder  ", "Локальный декодер  ");
+                font-size: 10px; color: #586f87; vertical-alignment: center;
+            }
+            ScrollingText {
+                x: decoder-label.width; width: max(0px, parent.width - self.x); height: parent.height;
+                text: root.device.decoder; font-size: 10px; text-color: #586f87;
             }
         }
     }
diff --git a/apps/desktop/src/gui/ui/stream_window.slint b/apps/desktop/src/gui/ui/stream_window.slint
index 0987c500..c72e35d8 100644
--- a/apps/desktop/src/gui/ui/stream_window.slint
+++ b/apps/desktop/src/gui/ui/stream_window.slint
@@ -2,7 +2,7 @@ import { SurfaceSeparator, FlatSurface, UiSurface } from "ui_surface.slint";
 import { UiRadius } from "ui_radius.slint";
 import { ComboBox, ScrollView } from "std-widgets.slint";
 import { RemoteCursor } from "remote_cursor.slint";
-import { FontAwesomeIcons, IconButton, PrimaryButton, SecondaryButton, DialogSurface, ImGuiFontStyle, ControlStyle, ButtonStyle } from "common.slint";
+import { FontAwesomeIcons, IconButton, PrimaryButton, SecondaryButton, DialogSurface, ImGuiFontStyle, ControlStyle, ButtonStyle, ScrollingText } from "common.slint";
 
 export struct StreamTab {
     remote-id: string,
@@ -1458,13 +1458,12 @@ export component StreamWindow inherits Window {
                                 color: #667085; font-size: ImGuiFontStyle.small;
                                 vertical-alignment: center;
                             }
-                            Text {
+                            ScrollingText {
                                 x: codec-label-width-probe.preferred-width + 8px; y: 0px;
                                 width: parent.width - self.x; height: parent.height;
-                                text: codec.value; color: #344054;
+                                text: codec.value; text-color: #344054;
                                 font-size: ImGuiFontStyle.body; font-weight: 500;
-                                horizontal-alignment: right;
-                                vertical-alignment: center; overflow: elide;
+                                align-right: true;
                             }
                         }
                     }
diff --git a/apps/desktop/tests/slint_stream_render_test.cpp b/apps/desktop/tests/slint_stream_render_test.cpp
index f82494b5..b22d0be6 100644
--- a/apps/desktop/tests/slint_stream_render_test.cpp
+++ b/apps/desktop/tests/slint_stream_render_test.cpp
@@ -48,6 +48,8 @@ int main() {
   auto& adapter = *backend->adapter;
   stream->window().dispatch_resize_event(slint::LogicalSize({1280, 720}));
   stream->show();
+  stream->set_secure_attention_supported(false);
+  stream->set_privacy_visible(true);
   auto rows = std::make_shared<slint::VectorModel<crossdesk::ui::NetworkStatsRow>>();
   stream->set_stats_rows(rows);
   std::vector<crossdesk::ui::NetworkStatsRow> stats(4);
@@ -75,6 +77,13 @@ int main() {
   };
   settle();
   const float top = stream->get_video_area_top();
+  // The initial control is only the logo. Wait for the toolbar reveal before
+  // clicking network status, just as a user does in a new session.
+  const slint::LogicalPosition logo({19, top + 19});
+  stream->window().dispatch_pointer_move_event(logo);
+  stream->window().dispatch_pointer_press_event(logo, slint::PointerEventButton::Left);
+  stream->window().dispatch_pointer_release_event(logo, slint::PointerEventButton::Left);
+  settle(20);
   for (bool dock_right : {false, true}) {
     if (dock_right) {
       stream->invoke_begin_control_drag(5, 20);
@@ -82,19 +91,26 @@ int main() {
       stream->invoke_end_control_drag();
       settle();
     }
-    const int control_x = dock_right ? 916 : 0;
-    const slint::LogicalPosition button({float(control_x + (dock_right ? 278 : 245)), top + 19});
+    // With privacy visible and no Windows shortcuts, the toolbar is 344 px.
+    // Its logo moves to the trailing edge when docked on the right.
+    const int control_x = dock_right ? int(stream->get_video_area_width()) - 344 : 0;
+    const slint::LogicalPosition button({float(control_x + (dock_right ? 214 : 250)), top + 19});
     stream->window().dispatch_pointer_move_event(button);
     settle(35); // Include the tooltip that appears before the click.
     for (bool expanded : {true, false, true, false}) {
       stream->window().dispatch_pointer_press_event(button, slint::PointerEventButton::Left);
       stream->window().dispatch_pointer_release_event(button, slint::PointerEventButton::Left);
       settle(); // No pointer movement: animation must finish on its own.
+      if (stats_visible != expanded) {
+        std::cerr << "Network status button did not toggle the panel; dock_right="
+                  << dock_right << '\n';
+        return 1;
+      }
       for (int y : {65, 195}) {
         const auto pixel = adapter.pixels[(int(top) + y) * 1280 + control_x + 4];
         const bool painted = pixel.r >= 240 && pixel.g >= 240 && pixel.b >= 240;
         const bool cleared = pixel.r == 0 && pixel.g == 0 && pixel.b == 0;
-        if (stats_visible != expanded || (expanded ? !painted : !cleared)) {
+        if (expanded ? !painted : !cleared) {
           std::cerr << "Stats must fully " << (expanded ? "expand" : "collapse")
                     << " without pointer movement; dock_right=" << dock_right
                     << ", y=" << y << ", pixel=" << int(pixel.r) << ','
diff --git a/apps/desktop/tests/slint_ui_smoke_test.cpp b/apps/desktop/tests/slint_ui_smoke_test.cpp
index 12063f94..5d2c8c8a 100644
--- a/apps/desktop/tests/slint_ui_smoke_test.cpp
+++ b/apps/desktop/tests/slint_ui_smoke_test.cpp
@@ -779,7 +779,8 @@ bool VerifyWorkbenchActions() {
   if (window->get_settings_tab() != 0) return false;
   window->set_gallery_settings_error("");
   window->set_settings_open(false);
-  click(60, 20);
+  // DeskHub follows the ID/IP mode switch when direct IP connections are enabled.
+  click(window->get_ip_direct_enabled() ? 204 : 60, 20);
   if (!gallery_opened) return false;
   crossdesk::ui::RecentConnection device{};
   device.remote_id = "987654321";
@@ -850,24 +851,45 @@ bool VerifyWorkbenchActions() {
 bool VerifySystemShortcutMenu() {
   auto stream = crossdesk::ui::StreamWindow::create();
   stream->window().set_size(slint::LogicalSize(slint::Size<float>{1280, 720}));
+  stream->show();
   std::vector<std::string> commands;
   stream->on_send_shortcut([&](slint::SharedString command) { commands.emplace_back(command); });
-  const auto click = [&](float y) {
-    const slint::LogicalPosition point({55, stream->get_video_area_top() + y});
+  const auto settle = [] {
+    for (int i = 0; i < 20; ++i) {
+      std::this_thread::sleep_for(std::chrono::milliseconds(16));
+      slint::platform::update_timers_and_animations();
+    }
+  };
+  const auto click = [&](float x, float y) {
+    const slint::LogicalPosition point({x, stream->get_video_area_top() + y});
     stream->window().dispatch_pointer_move_event(point);
     stream->window().dispatch_pointer_press_event(point, slint::PointerEventButton::Left);
     stream->window().dispatch_pointer_release_event(point, slint::PointerEventButton::Left);
   };
-  click(20);
-  if (!stream->invoke_is_local_control_area(55, 90)) return false;
-  click(58);
-  stream->set_secure_attention_supported(false);
-  click(20);
-  if (stream->invoke_is_local_control_area(55, 90)) return false;
-  click(58);
+  // The toolbar starts collapsed. Reveal it before targeting its buttons.
+  click(19, 19);
+  settle();
   stream->set_secure_attention_supported(true);
-  click(20); click(88);
-  return commands == std::vector<std::string>{"Ctrl+Alt+Del", "Win+L", "Win+L"};
+  settle();
+  click(90, 19);
+  if (!stream->invoke_is_local_control_area(90, 90)) return false;
+  click(90, 68);
+
+  // Switching away from a Windows host hides the entire shortcut entry and
+  // closes an open menu; its former rows must no longer dispatch commands.
+  click(90, 19);
+  if (!stream->invoke_is_local_control_area(90, 90)) return false;
+  stream->set_secure_attention_supported(false);
+  settle();
+  if (stream->invoke_is_local_control_area(90, 90)) return false;
+  click(90, 98);
+  if (commands != std::vector<std::string>{"Ctrl+Alt+Del"}) return false;
+
+  stream->set_secure_attention_supported(true);
+  settle();
+  click(90, 19);
+  click(90, 98);
+  return commands == std::vector<std::string>{"Ctrl+Alt+Del", "Win+L"};
 }
 
 bool VerifyRemoteIdEditing() {
@@ -905,7 +927,7 @@ bool VerifyRemoteIdEditing() {
 
 int main() {
   if (!VerifySystemShortcutMenu()) {
-    std::cerr << "Shortcut menu must omit unsupported SAS and resize its input area\n";
+    std::cerr << "Shortcut menu must dispatch Windows shortcuts and hide for unsupported hosts\n";
     return 13;
   }
   if (!VerifyRemoteIdEditing()) {
diff --git a/apps/harmony/entry/src/main/ets/mobile/ControllerModels.ets b/apps/harmony/entry/src/main/ets/mobile/ControllerModels.ets
index b9868661..42c2048b 100644
--- a/apps/harmony/entry/src/main/ets/mobile/ControllerModels.ets
+++ b/apps/harmony/entry/src/main/ets/mobile/ControllerModels.ets
@@ -99,10 +99,11 @@ export class VideoSettings {
   feedback(): string { return !this.supported ? '连接建立后可调整，需被控端支持。' : this.failed ? '调整失败，请重试。' : this.pending ? '等待电脑端确认…' : ''; }
 }
 export interface Traffic { inbound: number; outbound: number; loss: number; }
-export interface NetworkReport { rtt: number; mode: number; srtp: boolean; video: Traffic; audio: Traffic; data: Traffic; total: Traffic; }
+export interface NetworkReport { rtt: number; mode: number; srtp: boolean; decoder?: string; video: Traffic; audio: Traffic; data: Traffic; total: Traffic; }
 export interface FrameSample { time: number; count: number; latency: number; latencyCount: number; }
 export class NetworkStatistics {
   report?: NetworkReport;
+  remoteEncoder: string = '';
   reportTime: number = -Infinity;
   rttTime: number = -Infinity;
   rtt: number = -1;
diff --git a/apps/harmony/entry/src/main/ets/mobile/MobileController.ets b/apps/harmony/entry/src/main/ets/mobile/MobileController.ets
index a01197c5..65591a8b 100644
--- a/apps/harmony/entry/src/main/ets/mobile/MobileController.ets
+++ b/apps/harmony/entry/src/main/ets/mobile/MobileController.ets
@@ -26,7 +26,8 @@ export interface RemoteDisplay { name: string; }
 interface HostInfo { host_name: string; platform: string; app_version: string; supports_video_settings: boolean; displays: RemoteDisplay[]; }
 interface SettingAck { quality: number; frame_rate: number; preference: number; request_id: number; accepted: boolean; }
 interface ServiceStatus { available: boolean; interactive_stage?: string; }
-interface ControlData { type: number; host_info?: HostInfo; video_settings?: SettingAck; service_status?: ServiceStatus; privacy_status?: PrivacyStatus; }
+interface VideoCodecStatus { encoder: string; }
+interface ControlData { type: number; host_info?: HostInfo; video_settings?: SettingAck; service_status?: ServiceStatus; privacy_status?: PrivacyStatus; video_codec?: VideoCodecStatus; }
 interface PresenceRequest { type: string; devices: string[]; subscribe: boolean; }
 interface SignalType { type: string; }
 
@@ -465,6 +466,7 @@ export class MobileController {
     if (this.receivedHostInfo) this.checkRemote(this.remoteVersion);
   }
   private data(message: ControlData): void {
+    if (message.type === 14 && message.video_codec) { this.network.remoteEncoder = message.video_codec.encoder; return; }
     if (message.type === 10 && message.privacy_status) { this.privacyScreen.receive(message.privacy_status, this.now()); this.syncPrivacy(); return; }
     if (message.type === 5) {
       this.serviceAvailable = message.service_status?.available === true;
diff --git a/apps/harmony/entry/src/main/ets/mobile/MobileRemoteView.ets b/apps/harmony/entry/src/main/ets/mobile/MobileRemoteView.ets
index 6a1140f7..954d7157 100644
--- a/apps/harmony/entry/src/main/ets/mobile/MobileRemoteView.ets
+++ b/apps/harmony/entry/src/main/ets/mobile/MobileRemoteView.ets
@@ -198,6 +198,15 @@ export struct MobileRemoteView {
     }.width('100%').constraintSize({ minHeight: 21 })
   }
   @Builder
+  NetworkCodec(label: string, value: string) {
+    Row({ space: 8 }) {
+      Text(label).fontSize(12).fontColor(MobileTheme.secondary).maxLines(1)
+      Text(value).fontSize(12).fontColor(MobileTheme.ink).textAlign(TextAlign.End).layoutWeight(1)
+        .maxLines(1).textOverflow({ overflow: TextOverflow.MARQUEE })
+        .marqueeOptions({ start: true, step: 0.5, loop: -1, fromStart: true })
+    }.width('100%').constraintSize({ minHeight: 21 })
+  }
+  @Builder
   Menu() {
     Column({ space: 10 }) {
       Row({ space: 6 }) {
@@ -266,7 +275,8 @@ export struct MobileRemoteView {
             this.NetworkDetail('连接延时（RTT）', NetworkStatistics.delay(this.state.networkTime - (this.controller?.network.rttTime ?? 0) < 3000 ? this.controller?.network.rtt ?? -1 : -1))
             this.NetworkDetail('连接方式', this.controller?.network.mode(this.state.networkTime) ?? '—')
             this.NetworkDetail('媒体加密', this.controller?.network.current(this.state.networkTime) === undefined ? '—' : this.controller?.network.report?.srtp ? 'SRTP 已启用' : '未启用', this.controller?.network.current(this.state.networkTime)?.srtp === true)
-
+            this.NetworkCodec('被控端编码器', this.controller?.network.remoteEncoder || '—')
+            this.NetworkCodec('控制端解码器', this.controller?.network.report?.decoder || '—')
           }
         }.width('100%')
       }.constraintSize({ maxHeight: Math.max(48, this.viewHeight - 132) }).width('100%').scrollBar(BarState.Off)
diff --git a/apps/harmony/native/mobile_session.cpp b/apps/harmony/native/mobile_session.cpp
index 7252751d..3fc9c401 100644
--- a/apps/harmony/native/mobile_session.cpp
+++ b/apps/harmony/native/mobile_session.cpp
@@ -144,6 +144,7 @@ class MobileSession {
       if (status == Connected && !s->connected_) {
         s->connecting_ = false; s->connected_ = true;
         auto info = MakeHostInformation("CrossDesk HarmonyOS Mobile", {}, true, s->version_, HostPlatform::HarmonyOS);
+        info.i.supports_video_codec_status = true;
         s->Send(info); FreeRemoteAction(info);
         RemoteAction audio{}; audio.type = audio_capture; audio.a = !s->muted_; s->Send(audio);
         s->audio_.Start();
diff --git a/apps/ios/CrossDeskMobile/Bridge/CrossDeskRTCBridge.h b/apps/ios/CrossDeskMobile/Bridge/CrossDeskRTCBridge.h
index b9020186..b8e19824 100644
--- a/apps/ios/CrossDeskMobile/Bridge/CrossDeskRTCBridge.h
+++ b/apps/ios/CrossDeskMobile/Bridge/CrossDeskRTCBridge.h
@@ -136,7 +136,10 @@ typedef struct {
     didReceiveFileAtURL:(NSURL *)fileURL;
 - (void)rtcBridge:(CrossDeskRTCBridge *)bridge
     didUpdateNetworkStats:(CrossDeskNetworkStats)stats
-    NS_SWIFT_NAME(rtcBridge(_:didUpdateNetworkStats:));
+             localDecoder:(NSString *)decoder
+    NS_SWIFT_NAME(rtcBridge(_:didUpdateNetworkStats:localDecoder:));
+- (void)rtcBridge:(CrossDeskRTCBridge *)bridge
+    didUpdateRemoteVideoEncoder:(NSString *)encoder;
 @end
 
 /// Objective-C++ boundary around the native MiniRTC C API.
diff --git a/apps/ios/CrossDeskMobile/Bridge/CrossDeskRTCBridge.mm b/apps/ios/CrossDeskMobile/Bridge/CrossDeskRTCBridge.mm
index b2c9f254..8165c25a 100644
--- a/apps/ios/CrossDeskMobile/Bridge/CrossDeskRTCBridge.mm
+++ b/apps/ios/CrossDeskMobile/Bridge/CrossDeskRTCBridge.mm
@@ -1434,6 +1434,7 @@ Params MakeParams(const RTCState &state, const std::string &user_id,
       action.type = ControlType::host_infomation;
       action.i.platform = crossdesk::HostPlatform::IOS;
       action.i.supports_privacy_screen = true;
+      action.i.supports_video_codec_status = true;
       CopyCString(action.i.host_name, sizeof(action.i.host_name),
                   controller_name);
       action.i.host_name_size = std::strlen(action.i.host_name);
@@ -1719,6 +1720,16 @@ Params MakeParams(const RTCState &state, const std::string &user_id,
   if (source == kControlStream) {
     RemoteAction action{};
     if (!action.from_json(std::string(data, size))) return;
+    if (action.type == ControlType::video_codec_status) {
+      NSString *encoder = [NSString stringWithUTF8String:action.vcs.encoder];
+      DispatchMain(^{
+        if (![self isControllerGenerationActive:generation]) return;
+        id<CrossDeskRTCBridgeDelegate> delegate = self.delegate;
+        if ([delegate respondsToSelector:@selector(rtcBridge:didUpdateRemoteVideoEncoder:)])
+          [delegate rtcBridge:self didUpdateRemoteVideoEncoder:encoder ?: @""];
+      });
+      return;
+    }
     if (action.type == ControlType::privacy_status) {
       const auto message = action.to_json();
       NSData *status = [NSData dataWithBytes:message.data() length:message.size()];
@@ -2034,13 +2045,17 @@ Params MakeParams(const RTCState &state, const std::string &user_id,
       mode == TraversalMode::P2P ? CrossDeskTraversalModeDirect
       : mode == TraversalMode::Relay ? CrossDeskTraversalModeRelay
                                     : CrossDeskTraversalModeUnknown};
+  NSString *decoder = [[NSString alloc]
+      initWithBytes:stats->video_decoder
+             length:strnlen(stats->video_decoder, sizeof(stats->video_decoder))
+           encoding:NSUTF8StringEncoding];
   DispatchMain(^{
     // Disconnect/reconnect can happen while this report waits on the UI queue.
     if (![self isControllerGenerationActive:generation]) return;
     id<CrossDeskRTCBridgeDelegate> delegate = self.delegate;
     if ([delegate respondsToSelector:
-            @selector(rtcBridge:didUpdateNetworkStats:)]) {
-      [delegate rtcBridge:self didUpdateNetworkStats:snapshot];
+            @selector(rtcBridge:didUpdateNetworkStats:localDecoder:)]) {
+      [delegate rtcBridge:self didUpdateNetworkStats:snapshot localDecoder:decoder ?: @""];
     }
   });
 }
diff --git a/apps/ios/CrossDeskMobile/RemoteNetworkStatistics.swift b/apps/ios/CrossDeskMobile/RemoteNetworkStatistics.swift
index 1e958f7a..46f69562 100644
--- a/apps/ios/CrossDeskMobile/RemoteNetworkStatistics.swift
+++ b/apps/ios/CrossDeskMobile/RemoteNetworkStatistics.swift
@@ -16,6 +16,7 @@ struct RemoteNetworkReport {
     var mode: Mode = .unknown
     var srtpActive = false
     var rttMilliseconds: Double = -1
+    var localVideoDecoder = ""
 }
 
 struct RemoteNetworkSnapshot {
@@ -23,6 +24,8 @@ struct RemoteNetworkSnapshot {
     var framesPerSecond = 0
     var videoLatencyMilliseconds: Double?
     var rttMilliseconds: Double?
+    var remoteVideoEncoder = ""
+    var localVideoDecoder = ""
 
     var connectionMode: String {
         switch report?.mode {
@@ -66,6 +69,11 @@ struct RemoteNetworkStatistics {
     private var frames: [(time: TimeInterval, latency: Double?)] = []
     private var displayedSnapshot = RemoteNetworkSnapshot()
     private var displayTime: TimeInterval?
+    private var remoteVideoEncoder = ""
+
+    mutating func receiveRemoteVideoEncoder(_ encoder: String) {
+        remoteVideoEncoder = encoder
+    }
 
     mutating func receive(_ report: RemoteNetworkReport, at now: TimeInterval) {
         self.report = report
@@ -117,7 +125,9 @@ struct RemoteNetworkStatistics {
             report: now - reportTime < 3 ? report : nil,
             framesPerSecond: recentFrames.count,
             videoLatencyMilliseconds: delays.isEmpty ? nil : delays.reduce(0, +) / Double(delays.count),
-            rttMilliseconds: now - rttTime < 3 ? averageRTT : nil
+            rttMilliseconds: now - rttTime < 3 ? averageRTT : nil,
+            remoteVideoEncoder: remoteVideoEncoder,
+            localVideoDecoder: report?.localVideoDecoder ?? ""
         )
     }
 }
diff --git a/apps/ios/CrossDeskMobile/RemoteSessionModel.swift b/apps/ios/CrossDeskMobile/RemoteSessionModel.swift
index aed2dc7d..066a5656 100644
--- a/apps/ios/CrossDeskMobile/RemoteSessionModel.swift
+++ b/apps/ios/CrossDeskMobile/RemoteSessionModel.swift
@@ -1473,7 +1473,14 @@ final class RemoteSessionModel: NSObject, ObservableObject, CrossDeskRTCBridgeDe
     }
 
     func rtcBridge(_ bridge: CrossDeskRTCBridge,
-                   didUpdateNetworkStats stats: CrossDeskNetworkStats) {
+                   didUpdateRemoteVideoEncoder encoder: String) {
+        guard hasNetworkConsent, isConnected else { return }
+        networkStatistics.receiveRemoteVideoEncoder(encoder)
+    }
+
+    func rtcBridge(_ bridge: CrossDeskRTCBridge,
+                   didUpdateNetworkStats stats: CrossDeskNetworkStats,
+                   localDecoder: String) {
         guard hasNetworkConsent, isConnected else { return }
         func traffic(_ value: CrossDeskTrafficStats) -> RemoteTrafficStatistics {
             RemoteTrafficStatistics(inboundBitrate: value.inboundBitrate,
@@ -1489,7 +1496,8 @@ final class RemoteSessionModel: NSObject, ObservableObject, CrossDeskRTCBridgeDe
         networkStatistics.receive(RemoteNetworkReport(
             video: traffic(stats.video), audio: traffic(stats.audio),
             data: traffic(stats.data), total: traffic(stats.total), mode: mode,
-            srtpActive: stats.srtpActive.boolValue, rttMilliseconds: stats.rttMilliseconds
+            srtpActive: stats.srtpActive.boolValue, rttMilliseconds: stats.rttMilliseconds,
+            localVideoDecoder: localDecoder
         ), at: ProcessInfo.processInfo.systemUptime)
     }
 
diff --git a/apps/ios/CrossDeskMobile/RemoteSessionView.swift b/apps/ios/CrossDeskMobile/RemoteSessionView.swift
index 47b1c2f3..f54acb30 100644
--- a/apps/ios/CrossDeskMobile/RemoteSessionView.swift
+++ b/apps/ios/CrossDeskMobile/RemoteSessionView.swift
@@ -1327,6 +1327,47 @@ private struct FloatingSessionMenu: View {
     }
 }
 
+private struct ScrollingCodecName: View {
+    let value: String
+    @State private var textWidth: CGFloat = 0
+    @State private var startedAt = Date()
+    @ScaledMetric(relativeTo: .caption) private var lineHeight = 16.0
+
+    var body: some View {
+        GeometryReader { bounds in
+            TimelineView(.animation(minimumInterval: 1.0 / 30, paused: textWidth <= bounds.size.width)) { context in
+                Text(value)
+                    .lineLimit(1)
+                    .fixedSize()
+                    .background {
+                        GeometryReader { text in
+                            Color.clear
+                                .onAppear { textWidth = text.size.width }
+                                .onChange(of: text.size.width) { textWidth = $0; startedAt = Date() }
+                        }
+                    }
+                    .offset(x: offset(in: bounds.size.width, at: context.date))
+                    .frame(width: bounds.size.width, height: bounds.size.height, alignment: .leading)
+                    .clipped()
+            }
+            .onAppear { startedAt = Date() }
+            .onChange(of: value) { _ in startedAt = Date() }
+            .onChange(of: bounds.size.width) { _ in startedAt = Date() }
+        }
+        .frame(height: lineHeight)
+        .accessibilityElement(children: .ignore)
+        .accessibilityLabel(value)
+    }
+
+    private func offset(in width: CGFloat, at time: Date) -> CGFloat {
+        let distance = max(0, textWidth - width)
+        guard distance > 0 else { return width - textWidth }
+        // Pause for one second at each end, then repeat at 30 points/second.
+        let phase = max(0, time.timeIntervalSince(startedAt)).truncatingRemainder(dividingBy: Double(distance) / 30 + 2)
+        return -min(distance, CGFloat(max(0, phase - 1) * 30))
+    }
+}
+
 private struct FloatingNetworkStatistics: View {
     let snapshot: RemoteNetworkSnapshot
     let frameSize: CGSize
@@ -1366,6 +1407,8 @@ private struct FloatingNetworkStatistics: View {
                     }
                 }
                 .accessibilityElement(children: .combine)
+                codec("被控端编码器", value: snapshot.remoteVideoEncoder)
+                codec("控制端解码器", value: snapshot.localVideoDecoder)
             }
             .font(.caption.monospacedDigit())
         }
@@ -1386,6 +1429,14 @@ private struct FloatingNetworkStatistics: View {
         .accessibilityElement(children: .combine)
     }
 
+    private func codec(_ title: String, value: String) -> some View {
+        HStack(spacing: 8) {
+            Text(title).foregroundStyle(.secondary).fixedSize()
+            ScrollingCodecName(value: value.isEmpty ? "—" : value)
+        }
+        .accessibilityElement(children: .combine)
+    }
+
     private func trafficRow(_ title: String, statistics: RemoteTrafficStatistics?) -> some View {
         trafficRow(title,
                    inbound: RemoteNetworkSnapshot.bitrate(statistics?.inboundBitrate),
diff --git a/docs/USER_GUIDE.md b/docs/USER_GUIDE.md
index 6ba48693..942fa384 100644
--- a/docs/USER_GUIDE.md
+++ b/docs/USER_GUIDE.md
@@ -123,7 +123,7 @@ sudo apt install "./crossdesk-virtual-desktop-xfce-linux-amd64-<version>.deb"
 
 桌面端可同步文本剪贴板。接收文件的位置可在“设置 → 常规 → 文件保存路径”调整。关闭主窗口会隐藏窗口并保持程序运行；需要完全退出时使用系统托盘或菜单栏中的退出入口。
 
-普通会话与桌面墙的网络状态均显示实际使用的视频编解码器名称，包括回退后的软件编解码器。名称统一采用“实现名称 (编码格式)”，名称首字母大写、技术缩写保留全大写，例如 `VideoToolbox (H.264)`、`NVENC (H.264)`、`NVDEC (H.264)`、`SVT-AV1 (AV1)`、`Dav1d (AV1)` 和 `LibAOM (AV1)`；Media Foundation 额外标注 `HW`（硬件）或 `SW`（软件）。被控端需要支持编码器状态上报；旧版本或尚未获取到的信息显示“—”。
+桌面端普通会话、桌面墙和移动端（Android、iOS、鸿蒙）的网络状态均显示“被控端编码器”和“控制端解码器”，使用实际的视频编解码器名称，包括回退后的软件编解码器。名称保持单行，超出可用宽度时自动横向滚动，完整显示时保持静止。名称统一采用“实现名称 (编码格式)”，名称首字母大写、技术缩写保留全大写，例如 `VideoToolbox (H.264)`、`NVENC (H.264)`、`NVDEC (H.264)`、`SVT-AV1 (AV1)`、`Dav1d (AV1)` 和 `LibAOM (AV1)`；Media Foundation 额外标注 `HW`（硬件）或 `SW`（软件）。被控端需要支持编码器状态上报；旧版本或尚未获取到的信息显示“—”。
 
 ### 在会话中调整画面
 
diff --git a/libs/controller/include/mobile_controller_protocol.h b/libs/controller/include/mobile_controller_protocol.h
index 9266680c..410bc667 100644
--- a/libs/controller/include/mobile_controller_protocol.h
+++ b/libs/controller/include/mobile_controller_protocol.h
@@ -10,6 +10,7 @@
 #include <minirtc.h>
 #include <nlohmann/json.hpp>
 #include <remote_action.h>
+#include <cstring>
 
 namespace crossdesk::mobile_controller {
 inline std::string PrivacyMessage(int flag, bool block_local_input) {
@@ -38,6 +39,7 @@ inline nlohmann::json NetworkReport(const MiniRtcNetTrafficStats& stats, Travers
     return nlohmann::json{{"inbound", in.bitrate}, {"outbound", out.bitrate}, {"loss", in.loss_rate}};
   };
   return {{"rtt", stats.rtt_ms}, {"mode", mode}, {"srtp", stats.srtp_active},
+    {"decoder", std::string(stats.video_decoder, strnlen(stats.video_decoder, sizeof(stats.video_decoder)))},
     {"video", traffic(stats.video_inbound_stats, stats.video_outbound_stats)},
     {"audio", traffic(stats.audio_inbound_stats, stats.audio_outbound_stats)},
     {"data", traffic(stats.data_inbound_stats, stats.data_outbound_stats)},