Add Android quick streaming and logout confirmation

backend/cmd/server/main.go

@@ -10,7 +10,7 @@ import (
 
 func main() {
 	monitor.Init(2000)
-	monitor.Infof("Starting Hightube Server v1.0.0-Beta4.1")
+	monitor.Infof("Starting Hightube Server v1.0.0-Beta4.7")
 
 	// Initialize Database and run auto-migrations
 	db.InitDB()

backend/internal/api/room.go

@@ -48,3 +48,18 @@ func GetActiveRooms(c *gin.Context) {
 
 	c.JSON(http.StatusOK, gin.H{"active_rooms": result})
 }
+
+func GetRoomPlaybackOptions(c *gin.Context) {
+	roomID := c.Param("room_id")
+	qualities := []string{"source"}
+	if adminRTMP != nil {
+		if available := adminRTMP.AvailablePlaybackQualities(roomID); len(available) > 0 {
+			qualities = available
+		}
+	}
+
+	c.JSON(http.StatusOK, gin.H{
+		"room_id":   roomID,
+		"qualities": qualities,
+	})
+}

backend/internal/api/router.go

@@ -25,6 +25,7 @@ func SetupRouter(streamServer *stream.RTMPServer) *gin.Engine {
 	r.POST("/api/login", Login)
 	r.POST("/api/admin/login", AdminLogin)
 	r.GET("/api/rooms/active", GetActiveRooms)
+	r.GET("/api/rooms/:room_id/thumbnail", streamServer.HandleThumbnail)
 	r.GET("/live/:room_id", streamServer.HandleHTTPFLV)
 
 	// WebSocket endpoint for live chat
@@ -37,6 +38,7 @@ func SetupRouter(streamServer *stream.RTMPServer) *gin.Engine {
 	authGroup.Use(AuthMiddleware())
 	{
 		authGroup.GET("/room/my", GetMyRoom)
+		authGroup.GET("/rooms/:room_id/playback-options", GetRoomPlaybackOptions)
 		authGroup.POST("/user/change-password", ChangePassword)
 
 		adminGroup := authGroup.Group("/admin")

backend/internal/stream/server.go

@@ -1,11 +1,18 @@
 package stream
 
 import (
+	"context"
+	"crypto/rand"
+	"encoding/hex"
 	"fmt"
 	"io"
 	"net/http"
+	"os"
+	"os/exec"
+	"path/filepath"
 	"strings"
 	"sync"
+	"time"
 
 	"github.com/gin-gonic/gin"
 	"github.com/nareix/joy4/av/avutil"
@@ -27,9 +34,42 @@ func init() {
 
 // RTMPServer manages all active live streams
 type RTMPServer struct {
-	server   *rtmp.Server
-	channels map[string]*pubsub.Queue
-	mutex    sync.RWMutex
+	server             *rtmp.Server
+	channels           map[string]*pubsub.Queue
+	transcoders        map[string][]*variantTranscoder
+	thumbnailJobs      map[string]context.CancelFunc
+	internalPublishKey string
+	thumbnailDir       string
+	mutex              sync.RWMutex
+}
+
+type variantTranscoder struct {
+	quality string
+	cancel  context.CancelFunc
+	cmd     *exec.Cmd
+}
+
+type qualityProfile struct {
+	scale        string
+	videoBitrate string
+	audioBitrate string
+}
+
+var qualityOrder = []string{"source", "720p", "480p"}
+
+const thumbnailCaptureInterval = 12 * time.Second
+
+var supportedQualities = map[string]qualityProfile{
+	"720p": {
+		scale:        "1280:-2",
+		videoBitrate: "2500k",
+		audioBitrate: "128k",
+	},
+	"480p": {
+		scale:        "854:-2",
+		videoBitrate: "1200k",
+		audioBitrate: "96k",
+	},
 }
 
 type writeFlusher struct {
@@ -45,32 +85,31 @@ func (w writeFlusher) Flush() error {
 // NewRTMPServer creates and initializes a new media server
 func NewRTMPServer() *RTMPServer {
 	s := &RTMPServer{
-		channels: make(map[string]*pubsub.Queue),
-		server:   &rtmp.Server{},
+		channels:           make(map[string]*pubsub.Queue),
+		transcoders:        make(map[string][]*variantTranscoder),
+		thumbnailJobs:      make(map[string]context.CancelFunc),
+		internalPublishKey: generateInternalPublishKey(),
+		thumbnailDir:       filepath.Join(os.TempDir(), "hightube-thumbnails"),
+		server:             &rtmp.Server{},
 	}
 
 	// Triggered when a broadcaster (e.g., OBS) starts publishing
 	s.server.HandlePublish = func(conn *rtmp.Conn) {
-		streamPath := conn.URL.Path // Expected format: /live/{stream_key}
+		streamPath := conn.URL.Path // Expected format: /live/{stream_key} or /variant/{room_id}/{quality}/{token}
 		monitor.Infof("OBS publish attempt: %s", streamPath)
 
-		// Extract stream key from path
 		parts := strings.Split(streamPath, "/")
-		if len(parts) < 3 || parts[1] != "live" {
+		if len(parts) < 3 {
 			monitor.Warnf("Invalid publish path format: %s", streamPath)
 			return
 		}
-		streamKey := parts[2]
 
-		// Authenticate stream key
-		var room model.Room
-		if err := db.DB.Where("stream_key = ?", streamKey).First(&room).Error; err != nil {
-			monitor.Warnf("Invalid stream key: %s", streamKey)
-			return // Reject connection
+		roomID, channelPath, isSource, ok := s.resolvePublishPath(parts)
+		if !ok {
+			monitor.Warnf("Invalid publish key/path: %s", streamPath)
+			return
 		}
 
-		monitor.Infof("Stream authenticated for room_id=%d", room.ID)
-
 		// 1. Get audio/video stream metadata
 		streams, err := conn.Streams()
 		if err != nil {
@@ -78,31 +117,42 @@ func NewRTMPServer() *RTMPServer {
 			return
 		}
 
-		// 2. Map the active stream by Room ID so viewers can use /live/{room_id}
-		roomLivePath := fmt.Sprintf("/live/%d", room.ID)
+		monitor.Infof("Stream authenticated for room_id=%s path=%s", roomID, channelPath)
 
 		s.mutex.Lock()
 		q := pubsub.NewQueue()
 		q.WriteHeader(streams)
-		s.channels[roomLivePath] = q
+		s.channels[channelPath] = q
 		s.mutex.Unlock()
 
-		// Mark room as active in DB (using map to ensure true/false is correctly updated)
-		db.DB.Model(&room).Updates(map[string]interface{}{"is_active": true})
+		if isSource {
+			roomIDUint := parseRoomID(roomID)
+			if roomIDUint != 0 {
+				db.DB.Model(&model.Room{}).Where("id = ?", roomIDUint).Updates(map[string]interface{}{"is_active": true})
+			}
+			s.startVariantTranscoders(roomID)
+			s.startThumbnailCapture(roomID)
+		}
 
 		// 3. Cleanup on end
 		defer func() {
 			s.mutex.Lock()
-			delete(s.channels, roomLivePath)
+			delete(s.channels, channelPath)
 			s.mutex.Unlock()
 			q.Close()
-			// Explicitly set is_active to false using map
-			db.DB.Model(&room).Updates(map[string]interface{}{"is_active": false})
 
-			// Clear chat history for this room
-			chat.MainHub.ClearRoomHistory(fmt.Sprintf("%d", room.ID))
-			
-			monitor.Infof("Publishing ended for room_id=%d", room.ID)
+			if isSource {
+				s.stopVariantTranscoders(roomID)
+				s.stopThumbnailCapture(roomID)
+				roomIDUint := parseRoomID(roomID)
+				if roomIDUint != 0 {
+					db.DB.Model(&model.Room{}).Where("id = ?", roomIDUint).Updates(map[string]interface{}{"is_active": false})
+				}
+				chat.MainHub.ClearRoomHistory(roomID)
+				monitor.Infof("Publishing ended for room_id=%s", roomID)
+			} else {
+				monitor.Infof("Variant publishing ended for room_id=%s path=%s", roomID, channelPath)
+			}
 		}()
 
 		// 4. Continuously copy data packets to our broadcast queue
@@ -158,6 +208,9 @@ func (s *RTMPServer) Start(addr string) error {
 // HandleHTTPFLV serves browser-compatible HTTP-FLV playback for web clients.
 func (s *RTMPServer) HandleHTTPFLV(c *gin.Context) {
 	streamPath := fmt.Sprintf("/live/%s", c.Param("room_id"))
+	if quality := normalizeQuality(c.Query("quality")); quality != "" {
+		streamPath = fmt.Sprintf("%s/%s", streamPath, quality)
+	}
 
 	s.mutex.RLock()
 	q, ok := s.channels[streamPath]
@@ -198,10 +251,249 @@ func (s *RTMPServer) HandleHTTPFLV(c *gin.Context) {
 	}
 }
 
+func (s *RTMPServer) HandleThumbnail(c *gin.Context) {
+	thumbnailPath := s.thumbnailPath(c.Param("room_id"))
+	if _, err := os.Stat(thumbnailPath); err != nil {
+		c.JSON(http.StatusNotFound, gin.H{"error": "Thumbnail not found"})
+		return
+	}
+
+	c.Header("Cache-Control", "no-store, no-cache, must-revalidate")
+	c.File(thumbnailPath)
+}
+
+func (s *RTMPServer) resolvePublishPath(parts []string) (roomID string, channelPath string, isSource bool, ok bool) {
+	if parts[1] == "live" && len(parts) == 3 {
+		var room model.Room
+		if err := db.DB.Where("stream_key = ?", parts[2]).First(&room).Error; err != nil {
+			return "", "", false, false
+		}
+		roomID = fmt.Sprintf("%d", room.ID)
+		channelPath = fmt.Sprintf("/live/%s", roomID)
+		return roomID, channelPath, true, true
+	}
+
+	if parts[1] == "variant" && len(parts) == 5 {
+		roomID = parts[2]
+		quality := normalizeQuality(parts[3])
+		token := parts[4]
+		if quality == "" || token != s.internalPublishKey {
+			return "", "", false, false
+		}
+		return roomID, fmt.Sprintf("/live/%s/%s", roomID, quality), false, true
+	}
+
+	return "", "", false, false
+}
+
+func (s *RTMPServer) startVariantTranscoders(roomID string) {
+	s.stopVariantTranscoders(roomID)
+
+	launch := make([]*variantTranscoder, 0, len(supportedQualities))
+	for quality, profile := range supportedQualities {
+		ctx, cancel := context.WithCancel(context.Background())
+		inputURL := fmt.Sprintf("rtmp://127.0.0.1:1935/live/%s", roomID)
+		outputURL := fmt.Sprintf("rtmp://127.0.0.1:1935/variant/%s/%s/%s", roomID, quality, s.internalPublishKey)
+		cmd := exec.CommandContext(
+			ctx,
+			"ffmpeg",
+			"-nostdin",
+			"-loglevel", "error",
+			"-i", inputURL,
+			"-vf", "scale="+profile.scale+":force_original_aspect_ratio=decrease",
+			"-c:v", "libx264",
+			"-preset", "veryfast",
+			"-tune", "zerolatency",
+			"-g", "48",
+			"-keyint_min", "48",
+			"-sc_threshold", "0",
+			"-b:v", profile.videoBitrate,
+			"-maxrate", profile.videoBitrate,
+			"-bufsize", profile.videoBitrate,
+			"-c:a", "aac",
+			"-b:a", profile.audioBitrate,
+			"-ar", "44100",
+			"-ac", "2",
+			"-f", "flv",
+			outputURL,
+		)
+
+		transcoder := &variantTranscoder{
+			quality: quality,
+			cancel:  cancel,
+			cmd:     cmd,
+		}
+		launch = append(launch, transcoder)
+
+		go func(roomID string, tr *variantTranscoder) {
+			time.Sleep(2 * time.Second)
+			monitor.Infof("Starting transcoder room_id=%s quality=%s", roomID, tr.quality)
+			if err := tr.cmd.Start(); err != nil {
+				monitor.Errorf("Failed to start transcoder room_id=%s quality=%s: %v", roomID, tr.quality, err)
+				return
+			}
+			if err := tr.cmd.Wait(); err != nil && ctx.Err() == nil {
+				monitor.Warnf("Transcoder exited room_id=%s quality=%s: %v", roomID, tr.quality, err)
+			}
+		}(roomID, transcoder)
+	}
+
+	s.mutex.Lock()
+	s.transcoders[roomID] = launch
+	s.mutex.Unlock()
+}
+
+func (s *RTMPServer) stopVariantTranscoders(roomID string) {
+	s.mutex.Lock()
+	transcoders := s.transcoders[roomID]
+	delete(s.transcoders, roomID)
+	s.mutex.Unlock()
+
+	for _, transcoder := range transcoders {
+		transcoder.cancel()
+	}
+}
+
+func (s *RTMPServer) startThumbnailCapture(roomID string) {
+	s.stopThumbnailCapture(roomID)
+
+	if err := os.MkdirAll(s.thumbnailDir, 0o755); err != nil {
+		monitor.Errorf("Failed to create thumbnail directory: %v", err)
+		return
+	}
+
+	ctx, cancel := context.WithCancel(context.Background())
+
+	s.mutex.Lock()
+	s.thumbnailJobs[roomID] = cancel
+	s.mutex.Unlock()
+
+	go func() {
+		select {
+		case <-ctx.Done():
+			return
+		case <-time.After(3 * time.Second):
+		}
+
+		s.captureThumbnail(roomID)
+
+		ticker := time.NewTicker(thumbnailCaptureInterval)
+		defer ticker.Stop()
+
+		for {
+			select {
+			case <-ctx.Done():
+				return
+			case <-ticker.C:
+				s.captureThumbnail(roomID)
+			}
+		}
+	}()
+}
+
+func (s *RTMPServer) stopThumbnailCapture(roomID string) {
+	s.mutex.Lock()
+	cancel := s.thumbnailJobs[roomID]
+	delete(s.thumbnailJobs, roomID)
+	s.mutex.Unlock()
+
+	if cancel != nil {
+		cancel()
+	}
+
+	_ = os.Remove(s.thumbnailPath(roomID))
+}
+
+func (s *RTMPServer) captureThumbnail(roomID string) {
+	outputPath := s.thumbnailPath(roomID)
+	tempPath := outputPath + ".tmp.jpg"
+	defer os.Remove(tempPath)
+
+	ctx, cancel := context.WithTimeout(context.Background(), 8*time.Second)
+	defer cancel()
+
+	cmd := exec.CommandContext(
+		ctx,
+		"ffmpeg",
+		"-y",
+		"-loglevel", "error",
+		"-rtmp_live", "live",
+		"-i", fmt.Sprintf("rtmp://127.0.0.1:1935/live/%s", roomID),
+		"-frames:v", "1",
+		"-q:v", "4",
+		tempPath,
+	)
+
+	if err := cmd.Run(); err != nil {
+		if ctx.Err() == context.DeadlineExceeded {
+			monitor.Warnf("Thumbnail capture timed out for room_id=%s", roomID)
+			return
+		}
+		monitor.Warnf("Thumbnail capture failed for room_id=%s: %v", roomID, err)
+		return
+	}
+
+	_ = os.Remove(outputPath)
+	if err := os.Rename(tempPath, outputPath); err != nil {
+		monitor.Warnf("Failed to store thumbnail for room_id=%s: %v", roomID, err)
+	}
+}
+
+func (s *RTMPServer) thumbnailPath(roomID string) string {
+	return filepath.Join(s.thumbnailDir, fmt.Sprintf("%s.jpg", roomID))
+}
+
+func normalizeQuality(value string) string {
+	value = strings.ToLower(strings.TrimSpace(value))
+	if _, ok := supportedQualities[value]; ok {
+		return value
+	}
+	return ""
+}
+
+func parseRoomID(value string) uint {
+	var roomID uint
+	_, _ = fmt.Sscanf(value, "%d", &roomID)
+	return roomID
+}
+
+func generateInternalPublishKey() string {
+	buf := make([]byte, 16)
+	if _, err := rand.Read(buf); err != nil {
+		return "internal_publish_fallback_key"
+	}
+	return hex.EncodeToString(buf)
+}
+
 func (s *RTMPServer) ActiveStreamCount() int {
 	s.mutex.RLock()
 	defer s.mutex.RUnlock()
-	return len(s.channels)
+
+	count := 0
+	for path := range s.channels {
+		if strings.Count(path, "/") == 2 {
+			count++
+		}
+	}
+	return count
+}
+
+func (s *RTMPServer) AvailablePlaybackQualities(roomID string) []string {
+	s.mutex.RLock()
+	defer s.mutex.RUnlock()
+
+	basePath := fmt.Sprintf("/live/%s", roomID)
+	available := make([]string, 0, len(qualityOrder))
+	for _, quality := range qualityOrder {
+		streamPath := basePath
+		if quality != "source" {
+			streamPath = fmt.Sprintf("%s/%s", basePath, quality)
+		}
+		if _, ok := s.channels[streamPath]; ok {
+			available = append(available, quality)
+		}
+	}
+	return available
 }
 
 func (s *RTMPServer) ActiveStreamPaths() []string {
@@ -210,7 +502,9 @@ func (s *RTMPServer) ActiveStreamPaths() []string {
 
 	paths := make([]string, 0, len(s.channels))
 	for path := range s.channels {
-		paths = append(paths, path)
+		if strings.Count(path, "/") == 2 {
+			paths = append(paths, path)
+		}
 	}
 	return paths
 }

frontend/android/app/build.gradle.kts

@@ -11,12 +11,12 @@ android {
     ndkVersion = flutter.ndkVersion
 
     compileOptions {
-        sourceCompatibility = JavaVersion.VERSION_1_8
-        targetCompatibility = JavaVersion.VERSION_1_8
+        sourceCompatibility = JavaVersion.VERSION_17
+        targetCompatibility = JavaVersion.VERSION_17
     }
 
     kotlinOptions {
-        jvmTarget = JavaVersion.VERSION_1_8.toString()
+        jvmTarget = JavaVersion.VERSION_17.toString()
     }
 
     defaultConfig {

frontend/android/app/src/main/AndroidManifest.xml

@@ -1,5 +1,7 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android">
     <uses-permission android:name="android.permission.INTERNET" />
+    <uses-permission android:name="android.permission.CAMERA" />
+    <uses-permission android:name="android.permission.RECORD_AUDIO" />
     <application
         android:label="Hightube"
         android:name="${applicationName}"

frontend/lib/pages/home_page.dart

@@ -10,8 +10,10 @@ import 'player_page.dart';
 import 'my_stream_page.dart';
 
 class HomePage extends StatefulWidget {
+  const HomePage({super.key});
+
   @override
-  _HomePageState createState() => _HomePageState();
+  State<HomePage> createState() => _HomePageState();
 }
 
 class _HomePageState extends State<HomePage> {
@@ -21,7 +23,7 @@ class _HomePageState extends State<HomePage> {
   Widget build(BuildContext context) {
     bool isWide = MediaQuery.of(context).size.width > 600;
 
-    final List<Widget> _pages = [
+    final List<Widget> pages = [
       _ExploreView(onGoLive: () => setState(() => _selectedIndex = 1)),
       MyStreamPage(),
       SettingsPage(),
@@ -51,7 +53,7 @@ class _HomePageState extends State<HomePage> {
                 ),
               ],
             ),
-          Expanded(child: _pages[_selectedIndex]),
+          Expanded(child: pages[_selectedIndex]),
         ],
       ),
       bottomNavigationBar: !isWide
@@ -91,6 +93,8 @@ class _ExploreViewState extends State<_ExploreView> {
   List<dynamic> _activeRooms = [];
   bool _isLoading = false;
   Timer? _refreshTimer;
+  String _thumbnailCacheBuster = DateTime.now().millisecondsSinceEpoch
+      .toString();
 
   @override
   void initState() {
@@ -117,18 +121,51 @@ class _ExploreViewState extends State<_ExploreView> {
       final response = await api.getActiveRooms();
       if (response.statusCode == 200) {
         final data = jsonDecode(response.body);
-        if (mounted) setState(() => _activeRooms = data['active_rooms'] ?? []);
+        if (mounted) {
+          setState(() {
+            _activeRooms = data['active_rooms'] ?? [];
+            _thumbnailCacheBuster = DateTime.now().millisecondsSinceEpoch
+                .toString();
+          });
+        }
       }
     } catch (e) {
-      if (!isAuto && mounted)
+      if (!isAuto && mounted) {
         ScaffoldMessenger.of(
           context,
         ).showSnackBar(SnackBar(content: Text("Failed to load rooms")));
+      }
     } finally {
       if (!isAuto && mounted) setState(() => _isLoading = false);
     }
   }
 
+  Future<void> _confirmLogout() async {
+    final confirmed = await showDialog<bool>(
+      context: context,
+      builder: (context) {
+        return AlertDialog(
+          title: const Text('Confirm Logout'),
+          content: const Text('Are you sure you want to log out now?'),
+          actions: [
+            TextButton(
+              onPressed: () => Navigator.pop(context, false),
+              child: const Text('Cancel'),
+            ),
+            FilledButton(
+              onPressed: () => Navigator.pop(context, true),
+              child: const Text('Logout'),
+            ),
+          ],
+        );
+      },
+    );
+
+    if (confirmed == true && mounted) {
+      await context.read<AuthProvider>().logout();
+    }
+  }
+
   @override
   Widget build(BuildContext context) {
     final settings = context.watch<SettingsProvider>();
@@ -141,10 +178,7 @@ class _ExploreViewState extends State<_ExploreView> {
             icon: Icon(Icons.refresh),
             onPressed: () => _refreshRooms(),
           ),
-          IconButton(
-            icon: Icon(Icons.logout),
-            onPressed: () => context.read<AuthProvider>().logout(),
-          ),
+          IconButton(icon: Icon(Icons.logout), onPressed: _confirmLogout),
         ],
       ),
       floatingActionButton: FloatingActionButton.extended(
@@ -198,20 +232,21 @@ class _ExploreViewState extends State<_ExploreView> {
   }
 
   Widget _buildRoomCard(dynamic room, SettingsProvider settings) {
+    final roomId = room['room_id'].toString();
     return Card(
       elevation: 4,
       clipBehavior: Clip.antiAlias,
       shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(16)),
       child: InkWell(
         onTap: () {
-          final playbackUrl = settings.playbackUrl(room['room_id'].toString());
+          final playbackUrl = settings.playbackUrl(roomId);
           Navigator.push(
             context,
             MaterialPageRoute(
               builder: (_) => PlayerPage(
                 title: room['title'],
                 playbackUrl: playbackUrl,
-                roomId: room['room_id'].toString(),
+                roomId: roomId,
               ),
             ),
           );
@@ -224,16 +259,37 @@ class _ExploreViewState extends State<_ExploreView> {
               child: Stack(
                 fit: StackFit.expand,
                 children: [
-                  Container(
-                    color: Theme.of(context).colorScheme.primaryContainer,
-                    child: Center(
-                      child: Icon(
-                        Icons.live_tv,
-                        size: 50,
-                        color: Theme.of(context).colorScheme.primary,
-                      ),
-                    ),
-                  ),
+                  settings.livePreviewThumbnailsEnabled
+                      ? Image.network(
+                          settings.thumbnailUrl(
+                            roomId,
+                            cacheBuster: _thumbnailCacheBuster,
+                          ),
+                          fit: BoxFit.cover,
+                          errorBuilder: (context, error, stackTrace) =>
+                              _buildRoomPreviewFallback(),
+                          loadingBuilder: (context, child, loadingProgress) {
+                            if (loadingProgress == null) {
+                              return child;
+                            }
+                            return Stack(
+                              fit: StackFit.expand,
+                              children: [
+                                _buildRoomPreviewFallback(),
+                                const Center(
+                                  child: SizedBox(
+                                    width: 22,
+                                    height: 22,
+                                    child: CircularProgressIndicator(
+                                      strokeWidth: 2,
+                                    ),
+                                  ),
+                                ),
+                              ],
+                            );
+                          },
+                        )
+                      : _buildRoomPreviewFallback(),
                   Positioned(
                     top: 8,
                     left: 8,
@@ -306,4 +362,17 @@ class _ExploreViewState extends State<_ExploreView> {
       ),
     );
   }
+
+  Widget _buildRoomPreviewFallback() {
+    return Container(
+      color: Theme.of(context).colorScheme.primaryContainer,
+      child: Center(
+        child: Icon(
+          Icons.live_tv,
+          size: 50,
+          color: Theme.of(context).colorScheme.primary,
+        ),
+      ),
+    );
+  }
 }

frontend/lib/pages/my_stream_page.dart

@@ -5,10 +5,13 @@ import 'package:flutter/services.dart';
 import '../providers/auth_provider.dart';
 import '../providers/settings_provider.dart';
 import '../services/api_service.dart';
+import '../widgets/android_quick_stream_panel.dart';
 
 class MyStreamPage extends StatefulWidget {
+  const MyStreamPage({super.key});
+
   @override
-  _MyStreamPageState createState() => _MyStreamPageState();
+  State<MyStreamPage> createState() => _MyStreamPageState();
 }
 
 class _MyStreamPageState extends State<MyStreamPage> {
@@ -29,13 +32,23 @@ class _MyStreamPageState extends State<MyStreamPage> {
 
     try {
       final response = await api.getMyRoom();
+      if (!mounted) {
+        return;
+      }
       if (response.statusCode == 200) {
         setState(() => _roomInfo = jsonDecode(response.body));
       }
     } catch (e) {
-      ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text("Failed to fetch room info")));
+      if (!mounted) {
+        return;
+      }
+      ScaffoldMessenger.of(
+        context,
+      ).showSnackBar(SnackBar(content: Text("Failed to fetch room info")));
     } finally {
-      setState(() => _isLoading = false);
+      if (mounted) {
+        setState(() => _isLoading = false);
+      }
     }
   }
 
@@ -48,59 +61,76 @@ class _MyStreamPageState extends State<MyStreamPage> {
       body: _isLoading
           ? Center(child: CircularProgressIndicator())
           : _roomInfo == null
-              ? Center(child: Text("No room info found."))
-              : SingleChildScrollView(
-                  padding: EdgeInsets.all(20),
-                  child: Column(
-                    crossAxisAlignment: CrossAxisAlignment.start,
-                    children: [
-                      _buildInfoCard(
-                        title: "Room Title",
-                        value: _roomInfo!['title'],
-                        icon: Icons.edit,
-                        onTap: () {
-                          // TODO: Implement title update API later
-                          ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text("Title editing coming soon!")));
-                        },
-                      ),
-                      SizedBox(height: 20),
-                      _buildInfoCard(
-                        title: "RTMP Server URL",
-                        value: settings.rtmpUrl,
-                        icon: Icons.copy,
-                        onTap: () {
-                          Clipboard.setData(ClipboardData(text: settings.rtmpUrl));
-                          ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text("Server URL copied to clipboard")));
-                        },
-                      ),
-                      SizedBox(height: 20),
-                      _buildInfoCard(
-                        title: "Stream Key (Keep Secret!)",
-                        value: _roomInfo!['stream_key'],
-                        icon: Icons.copy,
-                        isSecret: true,
-                        onTap: () {
-                          Clipboard.setData(ClipboardData(text: _roomInfo!['stream_key']));
-                          ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text("Stream Key copied to clipboard")));
-                        },
-                      ),
-                      SizedBox(height: 30),
-                      Center(
-                        child: Column(
-                          children: [
-                            Icon(Icons.info_outline, color: Colors.grey),
-                            SizedBox(height: 8),
-                            Text(
-                              "Use OBS or other tools to stream to this address.",
-                              textAlign: TextAlign.center,
-                              style: TextStyle(color: Colors.grey, fontSize: 12),
-                            ),
-                          ],
-                        ),
-                      ),
-                    ],
+          ? Center(child: Text("No room info found."))
+          : SingleChildScrollView(
+              padding: EdgeInsets.all(20),
+              child: Column(
+                crossAxisAlignment: CrossAxisAlignment.start,
+                children: [
+                  _buildInfoCard(
+                    title: "Room Title",
+                    value: _roomInfo!['title'],
+                    icon: Icons.edit,
+                    onTap: () {
+                      // TODO: Implement title update API later
+                      ScaffoldMessenger.of(context).showSnackBar(
+                        SnackBar(content: Text("Title editing coming soon!")),
+                      );
+                    },
                   ),
-                ),
+                  SizedBox(height: 20),
+                  _buildInfoCard(
+                    title: "RTMP Server URL",
+                    value: settings.rtmpUrl,
+                    icon: Icons.copy,
+                    onTap: () {
+                      Clipboard.setData(ClipboardData(text: settings.rtmpUrl));
+                      ScaffoldMessenger.of(context).showSnackBar(
+                        SnackBar(
+                          content: Text("Server URL copied to clipboard"),
+                        ),
+                      );
+                    },
+                  ),
+                  SizedBox(height: 20),
+                  _buildInfoCard(
+                    title: "Stream Key (Keep Secret!)",
+                    value: _roomInfo!['stream_key'],
+                    icon: Icons.copy,
+                    isSecret: true,
+                    onTap: () {
+                      Clipboard.setData(
+                        ClipboardData(text: _roomInfo!['stream_key']),
+                      );
+                      ScaffoldMessenger.of(context).showSnackBar(
+                        SnackBar(
+                          content: Text("Stream Key copied to clipboard"),
+                        ),
+                      );
+                    },
+                  ),
+                  SizedBox(height: 24),
+                  AndroidQuickStreamPanel(
+                    rtmpBaseUrl: settings.rtmpUrl,
+                    streamKey: _roomInfo!['stream_key'],
+                  ),
+                  SizedBox(height: 30),
+                  Center(
+                    child: Column(
+                      children: [
+                        Icon(Icons.info_outline, color: Colors.grey),
+                        SizedBox(height: 8),
+                        Text(
+                          "Use OBS or other tools to stream to this address.",
+                          textAlign: TextAlign.center,
+                          style: TextStyle(color: Colors.grey, fontSize: 12),
+                        ),
+                      ],
+                    ),
+                  ),
+                ],
+              ),
+            ),
     );
   }
 

frontend/lib/pages/player_page.dart

@@ -1,4 +1,5 @@
 import 'dart:async';
+import 'dart:convert';
 
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
@@ -8,6 +9,7 @@ import 'package:video_player/video_player.dart';
 
 import '../providers/auth_provider.dart';
 import '../providers/settings_provider.dart';
+import '../services/api_service.dart';
 import '../services/chat_service.dart';
 import '../widgets/web_stream_player.dart';
 
@@ -24,7 +26,7 @@ class PlayerPage extends StatefulWidget {
   });
 
   @override
-  _PlayerPageState createState() => _PlayerPageState();
+  State<PlayerPage> createState() => _PlayerPageState();
 }
 
 class _PlayerPageState extends State<PlayerPage> {
@@ -40,13 +42,16 @@ class _PlayerPageState extends State<PlayerPage> {
   bool _isRefreshing = false;
   bool _isFullscreen = false;
   bool _controlsVisible = true;
+  double _volume = kIsWeb ? 0.0 : 1.0;
   int _playerVersion = 0;
   String _selectedResolution = 'Source';
+  List<String> _availableResolutions = const ['Source'];
   Timer? _controlsHideTimer;
 
   @override
   void initState() {
     super.initState();
+    _loadPlaybackOptions();
     if (!kIsWeb) {
       _initializePlayer();
     }
@@ -55,11 +60,11 @@ class _PlayerPageState extends State<PlayerPage> {
   }
 
   Future<void> _initializePlayer() async {
-    _controller = VideoPlayerController.networkUrl(
-      Uri.parse(widget.playbackUrl),
-    );
+    final playbackUrl = _currentPlaybackUrl();
+    _controller = VideoPlayerController.networkUrl(Uri.parse(playbackUrl));
     try {
       await _controller!.initialize();
+      await _controller!.setVolume(_volume);
       _controller!.play();
       if (mounted) setState(() {});
     } catch (e) {
@@ -81,6 +86,55 @@ class _PlayerPageState extends State<PlayerPage> {
     }
   }
 
+  String _currentPlaybackUrl() {
+    final settings = context.read<SettingsProvider>();
+    final quality = _selectedResolution == 'Source'
+        ? null
+        : _selectedResolution.toLowerCase();
+    return settings.playbackUrl(widget.roomId, quality: quality);
+  }
+
+  Future<void> _loadPlaybackOptions() async {
+    final settings = context.read<SettingsProvider>();
+    final auth = context.read<AuthProvider>();
+    final api = ApiService(settings, auth.token);
+
+    try {
+      final response = await api.getPlaybackOptions(widget.roomId);
+      if (response.statusCode != 200) {
+        return;
+      }
+
+      final data = jsonDecode(response.body) as Map<String, dynamic>;
+      final rawQualities =
+          (data['qualities'] as List<dynamic>? ?? const ['source'])
+              .map((item) => item.toString().trim().toLowerCase())
+              .where((item) => item.isNotEmpty)
+              .toList();
+
+      final normalized = <String>['Source'];
+      for (final quality in rawQualities) {
+        if (quality == 'source') {
+          continue;
+        }
+        normalized.add(quality);
+      }
+
+      if (!mounted) {
+        return;
+      }
+
+      setState(() {
+        _availableResolutions = normalized.toSet().toList();
+        if (!_availableResolutions.contains(_selectedResolution)) {
+          _selectedResolution = 'Source';
+        }
+      });
+    } catch (_) {
+      // Keep source-only playback when the capability probe fails.
+    }
+  }
+
   void _initializeChat() {
     final settings = context.read<SettingsProvider>();
     final auth = context.read<AuthProvider>();
@@ -141,6 +195,8 @@ class _PlayerPageState extends State<PlayerPage> {
       return;
     }
 
+    await _loadPlaybackOptions();
+
     setState(() {
       _isRefreshing = true;
       _isError = false;
@@ -200,6 +256,76 @@ class _PlayerPageState extends State<PlayerPage> {
     _showControls();
   }
 
+  Future<void> _setVolume(double volume) async {
+    final nextVolume = volume.clamp(0.0, 1.0);
+    if (!mounted) {
+      return;
+    }
+
+    setState(() => _volume = nextVolume);
+
+    if (!kIsWeb && _controller != null) {
+      await _controller!.setVolume(nextVolume);
+    }
+  }
+
+  Future<void> _openVolumeSheet() async {
+    _showControls();
+    await showModalBottomSheet<void>(
+      context: context,
+      builder: (context) {
+        return SafeArea(
+          child: Padding(
+            padding: const EdgeInsets.fromLTRB(20, 16, 20, 28),
+            child: StatefulBuilder(
+              builder: (context, setSheetState) {
+                return Column(
+                  mainAxisSize: MainAxisSize.min,
+                  crossAxisAlignment: CrossAxisAlignment.start,
+                  children: [
+                    Text(
+                      'Volume',
+                      style: Theme.of(context).textTheme.titleMedium,
+                    ),
+                    const SizedBox(height: 12),
+                    Row(
+                      children: [
+                        Icon(
+                          _volume == 0
+                              ? Icons.volume_off
+                              : _volume < 0.5
+                              ? Icons.volume_down
+                              : Icons.volume_up,
+                        ),
+                        Expanded(
+                          child: Slider(
+                            value: _volume,
+                            min: 0,
+                            max: 1,
+                            divisions: 20,
+                            label: '${(_volume * 100).round()}%',
+                            onChanged: (value) {
+                              setSheetState(() => _volume = value);
+                              _setVolume(value);
+                            },
+                          ),
+                        ),
+                        SizedBox(
+                          width: 48,
+                          child: Text('${(_volume * 100).round()}%'),
+                        ),
+                      ],
+                    ),
+                  ],
+                );
+              },
+            ),
+          ),
+        );
+      },
+    );
+  }
+
   void _showControls() {
     _controlsHideTimer?.cancel();
     if (mounted) {
@@ -223,22 +349,30 @@ class _PlayerPageState extends State<PlayerPage> {
 
   Future<void> _selectResolution() async {
     _showControls();
+    await _loadPlaybackOptions();
+    if (!mounted) {
+      return;
+    }
+
     final nextResolution = await showModalBottomSheet<String>(
       context: context,
       builder: (context) {
         const options = ['Source', '720p', '480p'];
+        final available = _availableResolutions.toSet();
         return SafeArea(
           child: Column(
             mainAxisSize: MainAxisSize.min,
             children: [
-              const ListTile(
+              ListTile(
                 title: Text('Playback Resolution'),
                 subtitle: Text(
-                  'Current backend only provides the source stream. Lower resolutions are reserved for future multi-bitrate output.',
+                  available.length > 1
+                      ? 'Select an available transcoded stream.'
+                      : 'Only the source stream is available right now.',
                 ),
               ),
               ...options.map((option) {
-                final enabled = option == 'Source';
+                final enabled = available.contains(option);
                 return ListTile(
                   enabled: enabled,
                   leading: Icon(
@@ -249,7 +383,7 @@ class _PlayerPageState extends State<PlayerPage> {
                   title: Text(option),
                   subtitle: enabled
                       ? const Text('Available now')
-                      : const Text('Requires backend transcoding support'),
+                      : const Text('Waiting for backend transcoding output'),
                   onTap: enabled ? () => Navigator.pop(context, option) : null,
                 );
               }),
@@ -376,7 +510,8 @@ class _PlayerPageState extends State<PlayerPage> {
                   : kIsWeb
                   ? WebStreamPlayer(
                       key: ValueKey('web-player-$_playerVersion'),
-                      streamUrl: widget.playbackUrl,
+                      streamUrl: _currentPlaybackUrl(),
+                      volume: _volume,
                     )
                   : _controller != null && _controller!.value.isInitialized
                   ? AspectRatio(
@@ -488,6 +623,15 @@ class _PlayerPageState extends State<PlayerPage> {
                     label: "Refresh",
                     onPressed: _refreshPlayer,
                   ),
+                  _buildControlButton(
+                    icon: _volume == 0
+                        ? Icons.volume_off
+                        : _volume < 0.5
+                        ? Icons.volume_down
+                        : Icons.volume_up,
+                    label: "Volume",
+                    onPressed: _openVolumeSheet,
+                  ),
                   _buildControlButton(
                     icon: _showDanmaku ? Icons.subtitles : Icons.subtitles_off,
                     label: _showDanmaku ? "Danmaku On" : "Danmaku Off",

frontend/lib/pages/settings_page.dart

@@ -11,7 +11,7 @@ class SettingsPage extends StatefulWidget {
   const SettingsPage({super.key});
 
   @override
-  _SettingsPageState createState() => _SettingsPageState();
+  State<SettingsPage> createState() => _SettingsPageState();
 }
 
 class _SettingsPageState extends State<SettingsPage> {
@@ -88,6 +88,32 @@ class _SettingsPageState extends State<SettingsPage> {
     }
   }
 
+  Future<void> _confirmLogout(AuthProvider auth) async {
+    final confirmed = await showDialog<bool>(
+      context: context,
+      builder: (context) {
+        return AlertDialog(
+          title: const Text("Confirm Logout"),
+          content: const Text("Are you sure you want to log out now?"),
+          actions: [
+            TextButton(
+              onPressed: () => Navigator.pop(context, false),
+              child: const Text("Cancel"),
+            ),
+            FilledButton(
+              onPressed: () => Navigator.pop(context, true),
+              child: const Text("Logout"),
+            ),
+          ],
+        );
+      },
+    );
+
+    if (confirmed == true && mounted) {
+      await auth.logout();
+    }
+  }
+
   @override
   Widget build(BuildContext context) {
     final auth = context.watch<AuthProvider>();
@@ -221,6 +247,18 @@ class _SettingsPageState extends State<SettingsPage> {
                 );
               }).toList(),
             ),
+            const SizedBox(height: 32),
+            _buildSectionTitle("Explore"),
+            const SizedBox(height: 8),
+            SwitchListTile.adaptive(
+              contentPadding: EdgeInsets.zero,
+              title: const Text("Live Preview Thumbnails"),
+              subtitle: const Text(
+                "Show cached snapshot covers for live rooms when available.",
+              ),
+              value: settings.livePreviewThumbnailsEnabled,
+              onChanged: settings.setLivePreviewThumbnailsEnabled,
+            ),
             if (isAuthenticated) ...[
               const SizedBox(height: 32),
               _buildSectionTitle("Security"),
@@ -266,7 +304,7 @@ class _SettingsPageState extends State<SettingsPage> {
               SizedBox(
                 width: double.infinity,
                 child: FilledButton.tonalIcon(
-                  onPressed: auth.logout,
+                  onPressed: () => _confirmLogout(auth),
                   icon: const Icon(Icons.logout),
                   label: const Text("Logout"),
                   style: FilledButton.styleFrom(
@@ -307,11 +345,11 @@ class _SettingsPageState extends State<SettingsPage> {
                     style: TextStyle(fontSize: 20, fontWeight: FontWeight.bold),
                   ),
                   Text(
-                    "Version: 1.0.0-beta3.5",
+                    "Version: 1.0.0-beta4.1",
                     style: TextStyle(color: Colors.grey),
                   ),
                   Text(
-                    "Author: Highground-Soft & Minimax",
+                    "Author: Highground-Soft",
                     style: TextStyle(color: Colors.grey),
                   ),
                   SizedBox(height: 20),

frontend/lib/providers/settings_provider.dart

@@ -12,10 +12,12 @@ class SettingsProvider with ChangeNotifier {
   String _baseUrl = _defaultUrl;
   Color _themeColor = Colors.blue;
   ThemeMode _themeMode = ThemeMode.system;
+  bool _livePreviewThumbnailsEnabled = false;
 
   String get baseUrl => _baseUrl;
   Color get themeColor => _themeColor;
   ThemeMode get themeMode => _themeMode;
+  bool get livePreviewThumbnailsEnabled => _livePreviewThumbnailsEnabled;
 
   SettingsProvider() {
     _loadSettings();
@@ -32,6 +34,8 @@ class SettingsProvider with ChangeNotifier {
     if (savedThemeMode != null) {
       _themeMode = _themeModeFromString(savedThemeMode);
     }
+    _livePreviewThumbnailsEnabled =
+        prefs.getBool('livePreviewThumbnailsEnabled') ?? false;
     notifyListeners();
   }
 
@@ -56,18 +60,49 @@ class SettingsProvider with ChangeNotifier {
     notifyListeners();
   }
 
+  void setLivePreviewThumbnailsEnabled(bool enabled) async {
+    _livePreviewThumbnailsEnabled = enabled;
+    final prefs = await SharedPreferences.getInstance();
+    await prefs.setBool('livePreviewThumbnailsEnabled', enabled);
+    notifyListeners();
+  }
+
   // Also provide the RTMP URL based on the same hostname
   String get rtmpUrl {
     final uri = Uri.parse(_baseUrl);
     return "rtmp://${uri.host}:1935/live";
   }
 
-  String playbackUrl(String roomId) {
+  String playbackUrl(String roomId, {String? quality}) {
     final uri = Uri.parse(_baseUrl);
+    final normalizedQuality = quality?.trim().toLowerCase();
+
     if (kIsWeb) {
-      return uri.replace(path: '/live/$roomId').toString();
+      return uri
+          .replace(
+            path: '/live/$roomId',
+            queryParameters:
+                normalizedQuality == null || normalizedQuality.isEmpty
+                ? null
+                : {'quality': normalizedQuality},
+          )
+          .toString();
     }
-    return "$rtmpUrl/$roomId";
+
+    if (normalizedQuality == null || normalizedQuality.isEmpty) {
+      return "$rtmpUrl/$roomId";
+    }
+    return "$rtmpUrl/$roomId/$normalizedQuality";
+  }
+
+  String thumbnailUrl(String roomId, {String? cacheBuster}) {
+    final uri = Uri.parse(_baseUrl);
+    return uri
+        .replace(
+          path: '/api/rooms/$roomId/thumbnail',
+          queryParameters: cacheBuster == null ? null : {'t': cacheBuster},
+        )
+        .toString();
   }
 
   ThemeMode _themeModeFromString(String value) {

frontend/lib/services/api_service.dart

@@ -43,11 +43,24 @@ class ApiService {
     );
   }
 
-  Future<http.Response> changePassword(String oldPassword, String newPassword) async {
+  Future<http.Response> getPlaybackOptions(String roomId) async {
+    return await http.get(
+      Uri.parse("${settings.baseUrl}/api/rooms/$roomId/playback-options"),
+      headers: _headers,
+    );
+  }
+
+  Future<http.Response> changePassword(
+    String oldPassword,
+    String newPassword,
+  ) async {
     return await http.post(
       Uri.parse("${settings.baseUrl}/api/user/change-password"),
       headers: _headers,
-      body: jsonEncode({"old_password": oldPassword, "new_password": newPassword}),
+      body: jsonEncode({
+        "old_password": oldPassword,
+        "new_password": newPassword,
+      }),
     );
   }
 }

frontend/lib/widgets/android_quick_stream_panel.dart

@@ -0,0 +1,470 @@
+import 'dart:async';
+
+import 'package:flutter/foundation.dart';
+import 'package:flutter/material.dart';
+import 'package:permission_handler/permission_handler.dart';
+import 'package:rtmp_streaming/camera.dart';
+
+class AndroidQuickStreamPanel extends StatefulWidget {
+  final String rtmpBaseUrl;
+  final String streamKey;
+
+  const AndroidQuickStreamPanel({
+    super.key,
+    required this.rtmpBaseUrl,
+    required this.streamKey,
+  });
+
+  @override
+  State<AndroidQuickStreamPanel> createState() =>
+      _AndroidQuickStreamPanelState();
+}
+
+class _AndroidQuickStreamPanelState extends State<AndroidQuickStreamPanel> {
+  final CameraController _controller = CameraController(
+    ResolutionPreset.medium,
+    enableAudio: true,
+    androidUseOpenGL: true,
+  );
+
+  List<CameraDescription> _cameras = const [];
+  CameraDescription? _currentCamera;
+  StreamStatistics? _stats;
+  Timer? _statsTimer;
+  bool _permissionsGranted = false;
+  bool _isPreparing = true;
+  bool _isBusy = false;
+  bool _audioEnabled = true;
+  String? _statusMessage;
+
+  String get _streamUrl => '${widget.rtmpBaseUrl}/${widget.streamKey}';
+
+  bool get _isInitialized => _controller.value.isInitialized ?? false;
+  bool get _isStreaming => _controller.value.isStreamingVideoRtmp ?? false;
+
+  @override
+  void initState() {
+    super.initState();
+    _controller.addListener(_onControllerChanged);
+    _initialize();
+  }
+
+  @override
+  void dispose() {
+    _statsTimer?.cancel();
+    _controller.removeListener(_onControllerChanged);
+    _controller.dispose();
+    super.dispose();
+  }
+
+  Future<void> _initialize() async {
+    if (!mounted) {
+      return;
+    }
+    setState(() {
+      _isPreparing = true;
+      _statusMessage = null;
+    });
+
+    final cameraStatus = await Permission.camera.request();
+    final micStatus = await Permission.microphone.request();
+    final granted = cameraStatus.isGranted && micStatus.isGranted;
+
+    if (!mounted) {
+      return;
+    }
+
+    if (!granted) {
+      setState(() {
+        _permissionsGranted = false;
+        _isPreparing = false;
+        _statusMessage =
+            'Camera and microphone permissions are required for quick streaming.';
+      });
+      return;
+    }
+
+    try {
+      final cameras = await availableCameras();
+      if (!mounted) {
+        return;
+      }
+      if (cameras.isEmpty) {
+        setState(() {
+          _permissionsGranted = true;
+          _isPreparing = false;
+          _statusMessage = 'No available cameras were found on this device.';
+        });
+        return;
+      }
+
+      _cameras = cameras;
+      _currentCamera = cameras.first;
+      await _controller.initialize(_currentCamera!);
+
+      if (!mounted) {
+        return;
+      }
+
+      setState(() {
+        _permissionsGranted = true;
+        _isPreparing = false;
+        _statusMessage = 'Ready to go live.';
+      });
+    } on CameraException catch (e) {
+      if (!mounted) {
+        return;
+      }
+      setState(() {
+        _permissionsGranted = true;
+        _isPreparing = false;
+        _statusMessage = e.description ?? e.code;
+      });
+    } catch (e) {
+      if (!mounted) {
+        return;
+      }
+      setState(() {
+        _permissionsGranted = true;
+        _isPreparing = false;
+        _statusMessage = 'Failed to initialize camera: $e';
+      });
+    }
+  }
+
+  void _onControllerChanged() {
+    if (!mounted) {
+      return;
+    }
+
+    final event = _controller.value.event;
+    final eventType = event is Map ? event['eventType']?.toString() : null;
+    if (eventType == 'rtmp_stopped' || eventType == 'camera_closing') {
+      _statsTimer?.cancel();
+      setState(() {
+        _statusMessage =
+            _controller.value.errorDescription ?? 'Streaming stopped.';
+      });
+      return;
+    }
+
+    if (eventType == 'error' || eventType == 'rtmp_retry') {
+      setState(() {
+        _statusMessage =
+            _controller.value.errorDescription ?? 'Streaming error occurred.';
+      });
+      return;
+    }
+
+    setState(() {});
+  }
+
+  Future<void> _startStreaming() async {
+    if (!_isInitialized || _isBusy) {
+      return;
+    }
+
+    setState(() {
+      _isBusy = true;
+      _statusMessage = 'Connecting to stream server...';
+    });
+
+    try {
+      await _controller.startVideoStreaming(_streamUrl, bitrate: 1500 * 1024);
+      if (_isStreaming && !_audioEnabled) {
+        await _controller.switchAudio(false);
+      }
+      _startStatsPolling();
+      if (!mounted) {
+        return;
+      }
+      setState(() => _statusMessage = 'Quick stream is live.');
+    } on CameraException catch (e) {
+      if (!mounted) {
+        return;
+      }
+      setState(() => _statusMessage = e.description ?? e.code);
+    } finally {
+      if (mounted) {
+        setState(() => _isBusy = false);
+      }
+    }
+  }
+
+  Future<void> _stopStreaming() async {
+    if (!_isStreaming || _isBusy) {
+      return;
+    }
+
+    setState(() => _isBusy = true);
+    try {
+      await _controller.stopVideoStreaming();
+      _statsTimer?.cancel();
+      if (!mounted) {
+        return;
+      }
+      setState(() {
+        _stats = null;
+        _statusMessage = 'Quick stream stopped.';
+      });
+    } on CameraException catch (e) {
+      if (!mounted) {
+        return;
+      }
+      setState(() => _statusMessage = e.description ?? e.code);
+    } finally {
+      if (mounted) {
+        setState(() => _isBusy = false);
+      }
+    }
+  }
+
+  Future<void> _switchCamera() async {
+    if (_cameras.length < 2 || !_isInitialized || _isBusy) {
+      return;
+    }
+
+    final currentIndex = _cameras.indexOf(_currentCamera!);
+    final nextCamera = _cameras[(currentIndex + 1) % _cameras.length];
+    final nextCameraName = nextCamera.name;
+    if (nextCameraName == null || nextCameraName.isEmpty) {
+      setState(
+        () => _statusMessage = 'Unable to switch camera on this device.',
+      );
+      return;
+    }
+
+    setState(() => _isBusy = true);
+    try {
+      await _controller.switchCamera(nextCameraName);
+      if (!mounted) {
+        return;
+      }
+      setState(() {
+        _currentCamera = nextCamera;
+        _statusMessage = 'Switched camera.';
+      });
+    } on CameraException catch (e) {
+      if (!mounted) {
+        return;
+      }
+      setState(() => _statusMessage = e.description ?? e.code);
+    } finally {
+      if (mounted) {
+        setState(() => _isBusy = false);
+      }
+    }
+  }
+
+  Future<void> _toggleAudio() async {
+    final nextAudioEnabled = !_audioEnabled;
+
+    if (!_isStreaming) {
+      setState(() {
+        _audioEnabled = nextAudioEnabled;
+        _statusMessage = nextAudioEnabled
+            ? 'Microphone will be enabled when streaming starts.'
+            : 'Microphone will be muted after streaming starts.';
+      });
+      return;
+    }
+
+    setState(() => _isBusy = true);
+    try {
+      await _controller.switchAudio(nextAudioEnabled);
+      if (!mounted) {
+        return;
+      }
+      setState(() {
+        _audioEnabled = nextAudioEnabled;
+        _statusMessage = nextAudioEnabled
+            ? 'Microphone enabled.'
+            : 'Microphone muted.';
+      });
+    } on CameraException catch (e) {
+      if (!mounted) {
+        return;
+      }
+      setState(() => _statusMessage = e.description ?? e.code);
+    } finally {
+      if (mounted) {
+        setState(() => _isBusy = false);
+      }
+    }
+  }
+
+  void _startStatsPolling() {
+    _statsTimer?.cancel();
+    _statsTimer = Timer.periodic(const Duration(seconds: 2), (_) async {
+      if (!_isStreaming) {
+        return;
+      }
+      try {
+        final stats = await _controller.getStreamStatistics();
+        if (!mounted) {
+          return;
+        }
+        setState(() => _stats = stats);
+      } catch (_) {
+        // Ignore transient stats failures while streaming starts up.
+      }
+    });
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    if (kIsWeb || defaultTargetPlatform != TargetPlatform.android) {
+      return const SizedBox.shrink();
+    }
+
+    return Card(
+      child: Padding(
+        padding: const EdgeInsets.all(16),
+        child: Column(
+          crossAxisAlignment: CrossAxisAlignment.start,
+          children: [
+            Row(
+              children: [
+                Icon(
+                  Icons.rocket_launch,
+                  color: Theme.of(context).colorScheme.primary,
+                ),
+                const SizedBox(width: 10),
+                Text(
+                  'Quick Stream (Experimental)',
+                  style: Theme.of(context).textTheme.titleMedium?.copyWith(
+                    fontWeight: FontWeight.bold,
+                  ),
+                ),
+              ],
+            ),
+            const SizedBox(height: 8),
+            Text(
+              'Start streaming directly from your phone camera. For advanced scenes and overlays, continue using OBS.',
+              style: Theme.of(context).textTheme.bodySmall,
+            ),
+            const SizedBox(height: 16),
+            _buildPreview(context),
+            const SizedBox(height: 12),
+            _buildStatus(context),
+            const SizedBox(height: 12),
+            Wrap(
+              spacing: 10,
+              runSpacing: 10,
+              children: [
+                FilledButton.icon(
+                  onPressed: !_permissionsGranted || _isPreparing || _isBusy
+                      ? null
+                      : _isStreaming
+                      ? _stopStreaming
+                      : _startStreaming,
+                  icon: Icon(_isStreaming ? Icons.stop_circle : Icons.wifi),
+                  label: Text(_isStreaming ? 'Stop Stream' : 'Start Stream'),
+                ),
+                OutlinedButton.icon(
+                  onPressed: _cameras.length > 1 && !_isBusy && _isInitialized
+                      ? _switchCamera
+                      : null,
+                  icon: const Icon(Icons.cameraswitch),
+                  label: const Text('Switch Camera'),
+                ),
+                OutlinedButton.icon(
+                  onPressed: _isBusy || !_permissionsGranted
+                      ? null
+                      : _toggleAudio,
+                  icon: Icon(_audioEnabled ? Icons.mic : Icons.mic_off),
+                  label: Text(_audioEnabled ? 'Mic On' : 'Mic Off'),
+                ),
+                TextButton.icon(
+                  onPressed: _isBusy ? null : _initialize,
+                  icon: const Icon(Icons.refresh),
+                  label: const Text('Reinitialize'),
+                ),
+              ],
+            ),
+            const SizedBox(height: 12),
+            Text(
+              'Target: $_streamUrl',
+              style: Theme.of(context).textTheme.bodySmall,
+            ),
+            if (_stats != null) ...[
+              const SizedBox(height: 8),
+              Text(
+                'Stats: ${_stats!.width ?? '-'}x${_stats!.height ?? '-'}  |  ${_stats!.fps ?? '-'} fps  |  ${_formatKbps(_stats!.bitrate)}  |  dropped ${_stats!.droppedVideoFrames ?? 0} video',
+                style: Theme.of(context).textTheme.bodySmall,
+              ),
+            ],
+          ],
+        ),
+      ),
+    );
+  }
+
+  Widget _buildPreview(BuildContext context) {
+    return Container(
+      height: 220,
+      width: double.infinity,
+      decoration: BoxDecoration(
+        color: Colors.black,
+        borderRadius: BorderRadius.circular(16),
+      ),
+      clipBehavior: Clip.antiAlias,
+      child: _isPreparing
+          ? const Center(child: CircularProgressIndicator())
+          : !_permissionsGranted
+          ? _buildPreviewMessage('Grant camera and microphone permissions.')
+          : !_isInitialized
+          ? _buildPreviewMessage('Camera is not ready yet.')
+          : AspectRatio(
+              aspectRatio: _controller.value.aspectRatio,
+              child: CameraPreview(_controller),
+            ),
+    );
+  }
+
+  Widget _buildPreviewMessage(String text) {
+    return Center(
+      child: Padding(
+        padding: const EdgeInsets.all(20),
+        child: Text(
+          text,
+          style: const TextStyle(color: Colors.white70),
+          textAlign: TextAlign.center,
+        ),
+      ),
+    );
+  }
+
+  Widget _buildStatus(BuildContext context) {
+    final statusText =
+        _statusMessage ??
+        (_isStreaming ? 'Quick stream is live.' : 'Waiting for camera.');
+
+    return Container(
+      width: double.infinity,
+      padding: const EdgeInsets.all(12),
+      decoration: BoxDecoration(
+        color: Theme.of(context).colorScheme.surfaceContainerHighest,
+        borderRadius: BorderRadius.circular(12),
+      ),
+      child: Row(
+        children: [
+          Icon(
+            _isStreaming ? Icons.circle : Icons.info_outline,
+            size: _isStreaming ? 12 : 18,
+            color: _isStreaming ? Colors.red : null,
+          ),
+          const SizedBox(width: 10),
+          Expanded(child: Text(statusText)),
+        ],
+      ),
+    );
+  }
+
+  String _formatKbps(int? bitrate) {
+    if (bitrate == null || bitrate <= 0) {
+      return '- kbps';
+    }
+    return '${(bitrate / 1000).toStringAsFixed(0)} kbps';
+  }
+}

frontend/lib/widgets/web_stream_player_stub.dart

@@ -2,11 +2,13 @@ import 'package:flutter/material.dart';
 
 class WebStreamPlayer extends StatelessWidget {
   final String streamUrl;
+  final double volume;
   final int? refreshToken;
 
   const WebStreamPlayer({
     super.key,
     required this.streamUrl,
+    required this.volume,
     this.refreshToken,
   });
 

frontend/lib/widgets/web_stream_player_web.dart

@@ -1,3 +1,5 @@
+// ignore_for_file: avoid_web_libraries_in_flutter, deprecated_member_use
+
 import 'dart:html' as html;
 import 'dart:ui_web' as ui_web;
 
@@ -5,11 +7,13 @@ import 'package:flutter/material.dart';
 
 class WebStreamPlayer extends StatefulWidget {
   final String streamUrl;
+  final double volume;
   final int? refreshToken;
 
   const WebStreamPlayer({
     super.key,
     required this.streamUrl,
+    required this.volume,
     this.refreshToken,
   });
 
@@ -19,6 +23,7 @@ class WebStreamPlayer extends StatefulWidget {
 
 class _WebStreamPlayerState extends State<WebStreamPlayer> {
   late final String _viewType;
+  html.IFrameElement? _iframe;
 
   @override
   void initState() {
@@ -29,15 +34,30 @@ class _WebStreamPlayerState extends State<WebStreamPlayer> {
     ui_web.platformViewRegistry.registerViewFactory(_viewType, (int viewId) {
       final iframe = html.IFrameElement()
         ..src =
-            'flv_player.html?v=$cacheBuster&src=${Uri.encodeComponent(widget.streamUrl)}'
+            'flv_player.html?v=$cacheBuster'
+            '&src=${Uri.encodeComponent(widget.streamUrl)}'
+            '&volume=${widget.volume}'
         ..style.border = '0'
         ..style.width = '100%'
         ..style.height = '100%'
+        ..style.pointerEvents = 'none'
         ..allow = 'autoplay; fullscreen';
+      _iframe = iframe;
       return iframe;
     });
   }
 
+  @override
+  void didUpdateWidget(covariant WebStreamPlayer oldWidget) {
+    super.didUpdateWidget(oldWidget);
+    if (oldWidget.volume != widget.volume) {
+      _iframe?.contentWindow?.postMessage({
+        'type': 'setVolume',
+        'value': widget.volume,
+      }, '*');
+    }
+  }
+
   @override
   Widget build(BuildContext context) {
     return HtmlElementView(viewType: _viewType);

frontend/pubspec.lock

@@ -368,6 +368,54 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.3.0"
+  permission_handler:
+    dependency: "direct main"
+    description:
+      name: permission_handler
+      sha256: bc917da36261b00137bbc8896bf1482169cd76f866282368948f032c8c1caae1
+      url: "https://pub.dev"
+    source: hosted
+    version: "12.0.1"
+  permission_handler_android:
+    dependency: transitive
+    description:
+      name: permission_handler_android
+      sha256: "1e3bc410ca1bf84662104b100eb126e066cb55791b7451307f9708d4007350e6"
+      url: "https://pub.dev"
+    source: hosted
+    version: "13.0.1"
+  permission_handler_apple:
+    dependency: transitive
+    description:
+      name: permission_handler_apple
+      sha256: f000131e755c54cf4d84a5d8bd6e4149e262cc31c5a8b1d698de1ac85fa41023
+      url: "https://pub.dev"
+    source: hosted
+    version: "9.4.7"
+  permission_handler_html:
+    dependency: transitive
+    description:
+      name: permission_handler_html
+      sha256: "38f000e83355abb3392140f6bc3030660cfaef189e1f87824facb76300b4ff24"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.1.3+5"
+  permission_handler_platform_interface:
+    dependency: transitive
+    description:
+      name: permission_handler_platform_interface
+      sha256: eb99b295153abce5d683cac8c02e22faab63e50679b937fa1bf67d58bb282878
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.3.0"
+  permission_handler_windows:
+    dependency: transitive
+    description:
+      name: permission_handler_windows
+      sha256: "1a790728016f79a41216d88672dbc5df30e686e811ad4e698bfc51f76ad91f1e"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.2.1"
   petitparser:
     dependency: transitive
     description:
@@ -416,6 +464,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.2.0"
+  rtmp_streaming:
+    dependency: "direct main"
+    description:
+      name: rtmp_streaming
+      sha256: f54c0c0443df65086d2936b0f3432fbb351fc35bffba69aa2b004ee7ecf45d40
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.0.5"
   shared_preferences:
     dependency: "direct main"
     description:

frontend/pubspec.yaml

@@ -16,7 +16,7 @@ publish_to: 'none' # Remove this line if you wish to publish to pub.dev
 # https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
 # In Windows, build-name is used as the major, minor, and patch parts
 # of the product and file versions while build-number is used as the build suffix.
-version: 1.0.0-beta4.1
+version: 1.0.0-beta4.7
 
 environment:
   sdk: ^3.11.1
@@ -40,6 +40,8 @@ dependencies:
   video_player: ^2.11.1
   fvp: ^0.35.2
   web_socket_channel: ^3.0.3
+  permission_handler: ^12.0.1
+  rtmp_streaming: ^1.0.5
 
 dev_dependencies:
   flutter_test:

frontend/web/flv_player.html

@@ -45,14 +45,21 @@
   <script src="flv.min.js"></script>
 </head>
 <body>
-  <video id="player" controls autoplay muted playsinline></video>
+  <video id="player" autoplay muted playsinline></video>
   <div id="message">Loading live stream...</div>
   <script>
     const params = new URLSearchParams(window.location.search);
     const streamUrl = params.get('src');
+    const initialVolume = Number.parseFloat(params.get('volume') || '1');
     const video = document.getElementById('player');
     const message = document.getElementById('message');
 
+    function applyVolume(value) {
+      const normalized = Number.isFinite(value) ? Math.max(0, Math.min(1, value)) : 1;
+      video.volume = normalized;
+      video.muted = normalized === 0;
+    }
+
     function showMessage(text) {
       video.style.display = 'none';
       message.style.display = 'flex';
@@ -66,6 +73,8 @@
     } else if (!flvjs.isSupported()) {
       showMessage('This browser does not support FLV playback.');
     } else {
+      applyVolume(initialVolume);
+
       const player = flvjs.createPlayer({
         type: 'flv',
         url: streamUrl,
@@ -90,6 +99,13 @@
       video.style.display = 'block';
       message.style.display = 'none';
 
+      window.addEventListener('message', function(event) {
+        const data = event.data || {};
+        if (data.type === 'setVolume') {
+          applyVolume(Number(data.value));
+        }
+      });
+
       window.addEventListener('beforeunload', function() {
         player.destroy();
       });