diff --git a/app/play.tsx b/app/play.tsx
index e994a80..3e9a8f7 100644
--- a/app/play.tsx
+++ b/app/play.tsx
@@ -1,7 +1,7 @@
-import React, { useEffect, useRef } from "react";
+import React, { useEffect, useRef, useCallback, memo, useMemo } from "react";
 import { StyleSheet, TouchableOpacity, BackHandler, AppState, AppStateStatus, View } from "react-native";
 import { useLocalSearchParams, useRouter } from "expo-router";
-import { Video, ResizeMode } from "expo-av";
+import { Video } from "expo-av";
 import { useKeepAwake } from "expo-keep-awake";
 import { ThemedView } from "@/components/ThemedView";
 import { PlayerControls } from "@/components/PlayerControls";
@@ -16,6 +16,55 @@ import { useTVRemoteHandler } from "@/hooks/useTVRemoteHandler";
 import Toast from "react-native-toast-message";
 import usePlayerStore, { selectCurrentEpisode } from "@/stores/playerStore";
 import { useResponsiveLayout } from "@/hooks/useResponsiveLayout";
+import { useVideoHandlers } from "@/hooks/useVideoHandlers";
+
+// 优化的加载动画组件
+const LoadingContainer = memo(
+  ({ style, currentEpisode }: { style: any; currentEpisode: { url: string; title: string } | undefined }) => {
+    console.info(
+      `[PERF] Video component NOT rendered - waiting for valid URL. currentEpisode: ${!!currentEpisode}, url: ${
+        currentEpisode?.url ? "exists" : "missing"
+      }`
+    );
+    return (
+      <View style={style}>
+        <VideoLoadingAnimation showProgressBar />
+      </View>
+    );
+  }
+);
+
+LoadingContainer.displayName = "LoadingContainer";
+
+// 移到组件外部避免重复创建
+const createResponsiveStyles = (deviceType: string) => {
+  const isMobile = deviceType === "mobile";
+  const isTablet = deviceType === "tablet";
+
+  return StyleSheet.create({
+    container: {
+      flex: 1,
+      backgroundColor: "black",
+      // 移动端和平板端可能需要状态栏处理
+      ...(isMobile || isTablet ? { paddingTop: 0 } : {}),
+    },
+    videoContainer: {
+      ...StyleSheet.absoluteFillObject,
+      // 为触摸设备添加更多的交互区域
+      ...(isMobile || isTablet ? { zIndex: 1 } : {}),
+    },
+    videoPlayer: {
+      ...StyleSheet.absoluteFillObject,
+    },
+    loadingContainer: {
+      ...StyleSheet.absoluteFillObject,
+      backgroundColor: "rgba(0, 0, 0, 0.8)",
+      justifyContent: "center",
+      alignItems: "center",
+      zIndex: 10,
+    },
+  });
+};
 
 export default function PlayScreen() {
   const videoRef = useRef<Video>(null);
@@ -61,17 +110,54 @@ export default function PlayScreen() {
   } = usePlayerStore();
   const currentEpisode = usePlayerStore(selectCurrentEpisode);
 
+  // 使用Video事件处理hook
+  const { videoProps } = useVideoHandlers({
+    videoRef,
+    currentEpisode,
+    initialPosition,
+    introEndTime,
+    playbackRate,
+    handlePlaybackStatusUpdate,
+    deviceType,
+    detail: detail || undefined,
+  });
+
+  // TV遥控器处理 - 总是调用hook，但根据设备类型决定是否使用结果
+  const tvRemoteHandler = useTVRemoteHandler();
+
+  // 优化的动态样式 - 使用useMemo避免重复计算
+  const dynamicStyles = useMemo(() => createResponsiveStyles(deviceType), [deviceType]);
+
   useEffect(() => {
+    const perfStart = performance.now();
+    console.info(`[PERF] PlayScreen useEffect START - source: ${source}, id: ${id}, title: ${title}`);
+
     setVideoRef(videoRef);
     if (source && id && title) {
+      console.info(`[PERF] Calling loadVideo with episodeIndex: ${episodeIndex}, position: ${position}`);
       loadVideo({ source, id, episodeIndex, position, title });
+    } else {
+      console.info(`[PERF] Missing required params - source: ${!!source}, id: ${!!id}, title: ${!!title}`);
     }
 
+    const perfEnd = performance.now();
+    console.info(`[PERF] PlayScreen useEffect END - took ${(perfEnd - perfStart).toFixed(2)}ms`);
+
     return () => {
+      console.info(`[PERF] PlayScreen unmounting - calling reset()`);
       reset(); // Reset state when component unmounts
     };
   }, [episodeIndex, source, position, setVideoRef, reset, loadVideo, id, title]);
 
+  // 优化的屏幕点击处理
+  const onScreenPress = useCallback(() => {
+    if (deviceType === "tv") {
+      tvRemoteHandler.onScreenPress();
+    } else {
+      setShowControls(!showControls);
+    }
+  }, [deviceType, tvRemoteHandler, setShowControls, showControls]);
+
   useEffect(() => {
     const handleAppStateChange = (nextAppState: AppStateStatus) => {
       if (nextAppState === "background" || nextAppState === "inactive") {
@@ -86,14 +172,6 @@ export default function PlayScreen() {
     };
   }, []);
 
-  // TV遥控器处理 - 总是调用hook，但根据设备类型决定是否使用结果
-  const tvRemoteHandler = useTVRemoteHandler();
-  
-  // 根据设备类型使用不同的交互处理
-  const onScreenPress = deviceType === 'tv' 
-    ? tvRemoteHandler.onScreenPress 
-    : () => setShowControls(!showControls);
-
   useEffect(() => {
     const backAction = () => {
       if (showControls) {
@@ -132,42 +210,29 @@ export default function PlayScreen() {
     return <VideoLoadingAnimation showProgressBar />;
   }
 
-  // 动态样式
-  const dynamicStyles = createResponsiveStyles(deviceType);
-
   return (
     <ThemedView focusable style={dynamicStyles.container}>
-      <TouchableOpacity 
-        activeOpacity={1} 
-        style={dynamicStyles.videoContainer} 
+      <TouchableOpacity
+        activeOpacity={1}
+        style={dynamicStyles.videoContainer}
         onPress={onScreenPress}
-        disabled={deviceType !== 'tv' && showControls} // 移动端和平板端在显示控制条时禁用触摸
+        disabled={deviceType !== "tv" && showControls} // 移动端和平板端在显示控制条时禁用触摸
       >
-        <Video
-          ref={videoRef}
-          style={dynamicStyles.videoPlayer}
-          source={{ uri: currentEpisode?.url || "" }}
-          posterSource={{ uri: detail?.poster ?? "" }}
-          resizeMode={ResizeMode.CONTAIN}
-          rate={playbackRate}
-          onPlaybackStatusUpdate={handlePlaybackStatusUpdate}
-          onLoad={() => {
-            const jumpPosition = initialPosition || introEndTime || 0;
-            if (jumpPosition > 0) {
-              videoRef.current?.setPositionAsync(jumpPosition);
-            }
-            usePlayerStore.setState({ isLoading: false });
-          }}
-          onLoadStart={() => usePlayerStore.setState({ isLoading: true })}
-          useNativeControls={deviceType !== 'tv'}
-          shouldPlay
-        />
+        {/* 条件渲染Video组件：只有在有有效URL时才渲染 */}
+        {currentEpisode?.url ? (
+          <Video ref={videoRef} style={dynamicStyles.videoPlayer} {...videoProps} />
+        ) : (
+          <LoadingContainer style={dynamicStyles.loadingContainer} currentEpisode={currentEpisode} />
+        )}
 
-        {showControls && deviceType === 'tv' && <PlayerControls showControls={showControls} setShowControls={setShowControls} />}
+        {showControls && deviceType === "tv" && (
+          <PlayerControls showControls={showControls} setShowControls={setShowControls} />
+        )}
 
         <SeekingBar />
 
-        {isLoading && (
+        {/* 只在Video组件存在且正在加载时显示加载动画覆盖层 */}
+        {currentEpisode?.url && isLoading && (
           <View style={dynamicStyles.loadingContainer}>
             <VideoLoadingAnimation showProgressBar />
           </View>
@@ -182,32 +247,3 @@ export default function PlayScreen() {
     </ThemedView>
   );
 }
-
-const createResponsiveStyles = (deviceType: string) => {
-  const isMobile = deviceType === 'mobile';
-  const isTablet = deviceType === 'tablet';
-
-  return StyleSheet.create({
-    container: { 
-      flex: 1, 
-      backgroundColor: "black",
-      // 移动端和平板端可能需要状态栏处理
-      ...(isMobile || isTablet ? { paddingTop: 0 } : {}),
-    },
-    videoContainer: {
-      ...StyleSheet.absoluteFillObject,
-      // 为触摸设备添加更多的交互区域
-      ...(isMobile || isTablet ? { zIndex: 1 } : {}),
-    },
-    videoPlayer: {
-      ...StyleSheet.absoluteFillObject,
-    },
-    loadingContainer: {
-      ...StyleSheet.absoluteFillObject,
-      backgroundColor: 'rgba(0, 0, 0, 0.8)',
-      justifyContent: 'center',
-      alignItems: 'center',
-      zIndex: 10,
-    },
-  });
-};
diff --git a/hooks/useVideoHandlers.ts b/hooks/useVideoHandlers.ts
new file mode 100644
index 0000000..d999898
--- /dev/null
+++ b/hooks/useVideoHandlers.ts
@@ -0,0 +1,131 @@
+import { useCallback, RefObject, useMemo } from 'react';
+import { Video, ResizeMode } from 'expo-av';
+import Toast from 'react-native-toast-message';
+import usePlayerStore from '@/stores/playerStore';
+
+interface UseVideoHandlersProps {
+  videoRef: RefObject<Video>;
+  currentEpisode: { url: string; title: string } | undefined;
+  initialPosition: number;
+  introEndTime?: number;
+  playbackRate: number;
+  handlePlaybackStatusUpdate: (status: any) => void;
+  deviceType: string;
+  detail?: { poster?: string };
+}
+
+export const useVideoHandlers = ({
+  videoRef,
+  currentEpisode,
+  initialPosition,
+  introEndTime,
+  playbackRate,
+  handlePlaybackStatusUpdate,
+  deviceType,
+  detail,
+}: UseVideoHandlersProps) => {
+  
+  const onLoad = useCallback(async () => {
+    console.info(`[PERF] Video onLoad - video ready to play`);
+    
+    try {
+      // 1. 先设置位置（如果需要）
+      const jumpPosition = initialPosition || introEndTime || 0;
+      if (jumpPosition > 0) {
+        console.info(`[PERF] Setting initial position to ${jumpPosition}ms`);
+        await videoRef.current?.setPositionAsync(jumpPosition);
+      }
+      
+      // 2. 显式调用播放以确保自动播放
+      console.info(`[AUTOPLAY] Attempting to start playback after onLoad`);
+      await videoRef.current?.playAsync();
+      console.info(`[AUTOPLAY] Auto-play successful after onLoad`);
+      
+      usePlayerStore.setState({ isLoading: false });
+      console.info(`[PERF] Video loading complete - isLoading set to false`);
+    } catch (error) {
+      console.warn(`[AUTOPLAY] Failed to auto-play after onLoad:`, error);
+      // 即使自动播放失败，也要设置加载完成状态
+      usePlayerStore.setState({ isLoading: false });
+      // 不显示错误提示，因为自动播放失败是常见且预期的情况
+    }
+  }, [videoRef, initialPosition, introEndTime]);
+
+  const onLoadStart = useCallback(() => {
+    if (!currentEpisode?.url) return;
+    
+    console.info(`[PERF] Video onLoadStart - starting to load video: ${currentEpisode.url.substring(0, 100)}...`);
+    usePlayerStore.setState({ isLoading: true });
+  }, [currentEpisode?.url]);
+
+  const onError = useCallback((error: any) => {
+    if (!currentEpisode?.url) return;
+    
+    console.error(`[ERROR] Video playback error:`, error);
+    
+    // 检测SSL证书错误和其他网络错误
+    const errorString = (error as any)?.error?.toString() || error?.toString() || '';
+    const isSSLError = errorString.includes('SSLHandshakeException') || 
+                      errorString.includes('CertPathValidatorException') ||
+                      errorString.includes('Trust anchor for certification path not found');
+    const isNetworkError = errorString.includes('HttpDataSourceException') ||
+                         errorString.includes('IOException') ||
+                         errorString.includes('SocketTimeoutException');
+    
+    if (isSSLError) {
+      console.error(`[SSL_ERROR] SSL certificate validation failed for URL: ${currentEpisode.url}`);
+      Toast.show({ 
+        type: "error", 
+        text1: "SSL证书错误，正在尝试其他播放源...",
+        text2: "请稍候"
+      });
+      usePlayerStore.getState().handleVideoError('ssl', currentEpisode.url);
+    } else if (isNetworkError) {
+      console.error(`[NETWORK_ERROR] Network connection failed for URL: ${currentEpisode.url}`);
+      Toast.show({ 
+        type: "error", 
+        text1: "网络连接失败，正在尝试其他播放源...",
+        text2: "请稍候"
+      });
+      usePlayerStore.getState().handleVideoError('network', currentEpisode.url);
+    } else {
+      console.error(`[VIDEO_ERROR] Other video error for URL: ${currentEpisode.url}`);
+      Toast.show({ 
+        type: "error", 
+        text1: "视频播放失败，正在尝试其他播放源...",
+        text2: "请稍候"
+      });
+      usePlayerStore.getState().handleVideoError('other', currentEpisode.url);
+    }
+  }, [currentEpisode?.url]);
+
+  // 优化的Video组件props
+  const videoProps = useMemo(() => ({
+    source: { uri: currentEpisode?.url || '' },
+    posterSource: { uri: detail?.poster ?? "" },
+    resizeMode: ResizeMode.CONTAIN,
+    rate: playbackRate,
+    onPlaybackStatusUpdate: handlePlaybackStatusUpdate,
+    onLoad,
+    onLoadStart,
+    onError,
+    useNativeControls: deviceType !== 'tv',
+    shouldPlay: true,
+  }), [
+    currentEpisode?.url,
+    detail?.poster,
+    playbackRate,
+    handlePlaybackStatusUpdate,
+    onLoad,
+    onLoadStart,
+    onError,
+    deviceType,
+  ]);
+
+  return {
+    onLoad,
+    onLoadStart,
+    onError,
+    videoProps,
+  };
+};
\ No newline at end of file
diff --git a/services/api.ts b/services/api.ts
index 32e77dd..7d653dc 100644
--- a/services/api.ts
+++ b/services/api.ts
@@ -204,7 +204,8 @@ export class API {
   async searchVideo(query: string, resourceId: string, signal?: AbortSignal): Promise<{ results: SearchResult[] }> {
     const url = `/api/search/one?q=${encodeURIComponent(query)}&resourceId=${encodeURIComponent(resourceId)}`;
     const response = await this._fetch(url, { signal });
-    return response.json();
+    const { results } = await response.json();
+    return { results: results.filter((item: any) => item.title === query )};
   }
 
   async getResources(signal?: AbortSignal): Promise<ApiSite[]> {
diff --git a/services/m3u8.ts b/services/m3u8.ts
index c3f5652..2fe11c6 100644
--- a/services/m3u8.ts
+++ b/services/m3u8.ts
@@ -10,21 +10,33 @@ export const getResolutionFromM3U8 = async (
   url: string,
   signal?: AbortSignal
 ): Promise<string | null> => {
+  const perfStart = performance.now();
+  console.info(`[PERF] M3U8 resolution detection START - url: ${url.substring(0, 100)}...`);
+  
   // 1. Check cache first
   const cachedEntry = resolutionCache[url];
   if (cachedEntry && Date.now() - cachedEntry.timestamp < CACHE_DURATION) {
+    const perfEnd = performance.now();
+    console.info(`[PERF] M3U8 resolution detection CACHED - took ${(perfEnd - perfStart).toFixed(2)}ms, resolution: ${cachedEntry.resolution}`);
     return cachedEntry.resolution;
   }
 
   if (!url.toLowerCase().endsWith(".m3u8")) {
+    console.info(`[PERF] M3U8 resolution detection SKIPPED - not M3U8 file`);
     return null;
   }
 
   try {
+    const fetchStart = performance.now();
     const response = await fetch(url, { signal });
+    const fetchEnd = performance.now();
+    console.info(`[PERF] M3U8 fetch took ${(fetchEnd - fetchStart).toFixed(2)}ms, status: ${response.status}`);
+    
     if (!response.ok) {
       return null;
     }
+    
+    const parseStart = performance.now();
     const playlist = await response.text();
     const lines = playlist.split("\n");
     let highestResolution = 0;
@@ -42,6 +54,9 @@ export const getResolutionFromM3U8 = async (
         }
       }
     }
+    
+    const parseEnd = performance.now();
+    console.info(`[PERF] M3U8 parsing took ${(parseEnd - parseStart).toFixed(2)}ms, lines: ${lines.length}`);
 
     // 2. Store result in cache
     resolutionCache[url] = {
@@ -49,8 +64,13 @@ export const getResolutionFromM3U8 = async (
       timestamp: Date.now(),
     };
 
+    const perfEnd = performance.now();
+    console.info(`[PERF] M3U8 resolution detection COMPLETE - took ${(perfEnd - perfStart).toFixed(2)}ms, resolution: ${resolutionString}`);
+    
     return resolutionString;
-  } catch {
+  } catch (error) {
+    const perfEnd = performance.now();
+    console.info(`[PERF] M3U8 resolution detection ERROR - took ${(perfEnd - perfStart).toFixed(2)}ms, error: ${error}`);
     return null;
   }
 };
diff --git a/services/storage.ts b/services/storage.ts
index d1fdf33..5faa5bf 100644
--- a/services/storage.ts
+++ b/services/storage.ts
@@ -59,8 +59,16 @@ export class PlayerSettingsManager {
   }
 
   static async get(source: string, id: string): Promise<PlayerSettings | null> {
+    const perfStart = performance.now();
+    console.info(`[PERF] PlayerSettingsManager.get START - source: ${source}, id: ${id}`);
+    
     const allSettings = await this.getAll();
-    return allSettings[generateKey(source, id)] || null;
+    const result = allSettings[generateKey(source, id)] || null;
+    
+    const perfEnd = performance.now();
+    console.info(`[PERF] PlayerSettingsManager.get END - took ${(perfEnd - perfStart).toFixed(2)}ms, found: ${!!result}`);
+    
+    return result;
   }
 
   static async save(source: string, id: string, settings: PlayerSettings): Promise<void> {
@@ -165,8 +173,12 @@ export class PlayRecordManager {
   }
 
   static async getAll(): Promise<Record<string, PlayRecord>> {
+    const perfStart = performance.now();
+    const storageType = this.getStorageType();
+    console.info(`[PERF] PlayRecordManager.getAll START - storageType: ${storageType}`);
+    
     let apiRecords: Record<string, PlayRecord> = {};
-    if (this.getStorageType() === "localstorage") {
+    if (storageType === "localstorage") {
       try {
         const data = await AsyncStorage.getItem(STORAGE_KEYS.PLAY_RECORDS);
         apiRecords = data ? JSON.parse(data) : {};
@@ -175,7 +187,13 @@ export class PlayRecordManager {
         return {};
       }
     } else {
+      const apiStart = performance.now();
+      console.info(`[PERF] API getPlayRecords START`);
+      
       apiRecords = await api.getPlayRecords();
+      
+      const apiEnd = performance.now();
+      console.info(`[PERF] API getPlayRecords END - took ${(apiEnd - apiStart).toFixed(2)}ms, records: ${Object.keys(apiRecords).length}`);
     }
 
     const localSettings = await PlayerSettingsManager.getAll();
@@ -186,6 +204,10 @@ export class PlayRecordManager {
         ...localSettings[key],
       };
     }
+    
+    const perfEnd = performance.now();
+    console.info(`[PERF] PlayRecordManager.getAll END - took ${(perfEnd - perfStart).toFixed(2)}ms, total records: ${Object.keys(mergedRecords).length}`);
+    
     return mergedRecords;
   }
 
@@ -207,9 +229,18 @@ export class PlayRecordManager {
   }
 
   static async get(source: string, id: string): Promise<PlayRecord | null> {
+    const perfStart = performance.now();
     const key = generateKey(source, id);
+    const storageType = this.getStorageType();
+    console.info(`[PERF] PlayRecordManager.get START - source: ${source}, id: ${id}, storageType: ${storageType}`);
+    
     const records = await this.getAll();
-    return records[key] || null;
+    const result = records[key] || null;
+    
+    const perfEnd = performance.now();
+    console.info(`[PERF] PlayRecordManager.get END - took ${(perfEnd - perfStart).toFixed(2)}ms, found: ${!!result}`);
+    
+    return result;
   }
 
   static async remove(source: string, id: string): Promise<void> {
diff --git a/stores/detailStore.ts b/stores/detailStore.ts
index 03647ac..6d010d6 100644
--- a/stores/detailStore.ts
+++ b/stores/detailStore.ts
@@ -16,11 +16,14 @@ interface DetailState {
   allSourcesLoaded: boolean;
   controller: AbortController | null;
   isFavorited: boolean;
+  failedSources: Set<string>; // 记录失败的source列表
 
   init: (q: string, preferredSource?: string, id?: string) => Promise<void>;
-  setDetail: (detail: SearchResultWithResolution) => void;
+  setDetail: (detail: SearchResultWithResolution) => Promise<void>;
   abort: () => void;
   toggleFavorite: () => Promise<void>;
+  markSourceAsFailed: (source: string, reason: string) => void;
+  getNextAvailableSource: (currentSource: string, episodeIndex: number) => SearchResultWithResolution | null;
 }
 
 const useDetailStore = create<DetailState>((set, get) => ({
@@ -33,8 +36,12 @@ const useDetailStore = create<DetailState>((set, get) => ({
   allSourcesLoaded: false,
   controller: null,
   isFavorited: false,
+  failedSources: new Set(),
 
   init: async (q, preferredSource, id) => {
+    const perfStart = performance.now();
+    console.info(`[PERF] DetailStore.init START - q: ${q}, preferredSource: ${preferredSource}, id: ${id}`);
+    
     const { controller: oldController } = get();
     if (oldController) {
       oldController.abort();
@@ -55,9 +62,13 @@ const useDetailStore = create<DetailState>((set, get) => ({
     const { videoSource } = useSettingsStore.getState();
 
     const processAndSetResults = async (results: SearchResult[], merge = false) => {
+      const resolutionStart = performance.now();
+      console.info(`[PERF] Resolution detection START - processing ${results.length} sources`);
+      
       const resultsWithResolution = await Promise.all(
         results.map(async (searchResult) => {
           let resolution;
+          const m3u8Start = performance.now();
           try {
             if (searchResult.episodes && searchResult.episodes.length > 0) {
               resolution = await getResolutionFromM3U8(searchResult.episodes[0], signal);
@@ -67,9 +78,14 @@ const useDetailStore = create<DetailState>((set, get) => ({
               console.info(`Failed to get resolution for ${searchResult.source_name}`, e);
             }
           }
+          const m3u8End = performance.now();
+          console.info(`[PERF] M3U8 resolution for ${searchResult.source_name}: ${(m3u8End - m3u8Start).toFixed(2)}ms (${resolution || 'failed'})`);
           return { ...searchResult, resolution };
         })
       );
+      
+      const resolutionEnd = performance.now();
+      console.info(`[PERF] Resolution detection COMPLETE - took ${(resolutionEnd - resolutionStart).toFixed(2)}ms`);
 
       if (signal.aborted) return;
 
@@ -93,59 +109,205 @@ const useDetailStore = create<DetailState>((set, get) => ({
     try {
       // Optimization for favorite navigation
       if (preferredSource && id) {
-        const { results: preferredResult } = await api.searchVideo(q, preferredSource, signal);
+        const searchPreferredStart = performance.now();
+        console.info(`[PERF] API searchVideo (preferred) START - source: ${preferredSource}, query: "${q}"`);
+        
+        let preferredResult: SearchResult[] = [];
+        let preferredSearchError: any = null;
+        
+        try {
+          const response = await api.searchVideo(q, preferredSource, signal);
+          preferredResult = response.results;
+        } catch (error) {
+          preferredSearchError = error;
+          console.error(`[ERROR] API searchVideo (preferred) FAILED - source: ${preferredSource}, error:`, error);
+        }
+        
+        const searchPreferredEnd = performance.now();
+        console.info(`[PERF] API searchVideo (preferred) END - took ${(searchPreferredEnd - searchPreferredStart).toFixed(2)}ms, results: ${preferredResult.length}, error: ${!!preferredSearchError}`);
+        
         if (signal.aborted) return;
+        
+        // 检查preferred source结果
         if (preferredResult.length > 0) {
+          console.info(`[SUCCESS] Preferred source "${preferredSource}" found ${preferredResult.length} results for "${q}"`);
           await processAndSetResults(preferredResult, false);
           set({ loading: false });
+        } else {
+          // 降级策略：preferred source失败时立即尝试所有源
+          if (preferredSearchError) {
+            console.warn(`[FALLBACK] Preferred source "${preferredSource}" failed with error, trying all sources immediately`);
+          } else {
+            console.warn(`[FALLBACK] Preferred source "${preferredSource}" returned 0 results for "${q}", trying all sources immediately`);
+          }
+          
+          // 立即尝试所有源，不再依赖后台搜索
+          const fallbackStart = performance.now();
+          console.info(`[PERF] FALLBACK search (all sources) START - query: "${q}"`);
+          
+          try {
+            const { results: allResults } = await api.searchVideos(q);
+            const fallbackEnd = performance.now();
+            console.info(`[PERF] FALLBACK search END - took ${(fallbackEnd - fallbackStart).toFixed(2)}ms, total results: ${allResults.length}`);
+            
+            const filteredResults = allResults.filter(item => item.title === q);
+            console.info(`[FALLBACK] Filtered results: ${filteredResults.length} matches for "${q}"`);
+            
+            if (filteredResults.length > 0) {
+              console.info(`[SUCCESS] FALLBACK search found results, proceeding with ${filteredResults[0].source_name}`);
+              await processAndSetResults(filteredResults, false);
+              set({ loading: false });
+            } else {
+              console.error(`[ERROR] FALLBACK search found no matching results for "${q}"`);
+              set({ 
+                error: `未找到 "${q}" 的播放源，请检查标题或稍后重试`,
+                loading: false 
+              });
+            }
+          } catch (fallbackError) {
+            console.error(`[ERROR] FALLBACK search FAILED:`, fallbackError);
+            set({ 
+              error: `搜索失败：${fallbackError instanceof Error ? fallbackError.message : '网络错误，请稍后重试'}`,
+              loading: false 
+            });
+          }
+        }
+        
+        // 后台搜索（如果preferred source成功的话）
+        if (preferredResult.length > 0) {
+          const searchAllStart = performance.now();
+          console.info(`[PERF] API searchVideos (background) START`);
+          
+          try {
+            const { results: allResults } = await api.searchVideos(q);
+            
+            const searchAllEnd = performance.now();
+            console.info(`[PERF] API searchVideos (background) END - took ${(searchAllEnd - searchAllStart).toFixed(2)}ms, results: ${allResults.length}`);
+            
+            if (signal.aborted) return;
+            await processAndSetResults(allResults.filter(item => item.title === q), true);
+          } catch (backgroundError) {
+            console.warn(`[WARN] Background search failed, but preferred source already succeeded:`, backgroundError);
+          }
         }
-        // Then load all others in background
-        const { results: allResults } = await api.searchVideos(q);
-        if (signal.aborted) return;
-        await processAndSetResults(allResults, true);
       } else {
         // Standard navigation: fetch resources, then fetch details one by one
-        const allResources = await api.getResources(signal);
-        const enabledResources = videoSource.enabledAll
-          ? allResources
-          : allResources.filter((r) => videoSource.sources[r.key]);
+        const resourcesStart = performance.now();
+        console.info(`[PERF] API getResources START - query: "${q}"`);
+        
+        try {
+          const allResources = await api.getResources(signal);
+          
+          const resourcesEnd = performance.now();
+          console.info(`[PERF] API getResources END - took ${(resourcesEnd - resourcesStart).toFixed(2)}ms, resources: ${allResources.length}`);
+          
+          const enabledResources = videoSource.enabledAll
+            ? allResources
+            : allResources.filter((r) => videoSource.sources[r.key]);
 
-        let firstResultFound = false;
-        const searchPromises = enabledResources.map(async (resource) => {
-          try {
-            const { results } = await api.searchVideo(q, resource.key, signal);
-            if (results.length > 0) {
-              await processAndSetResults(results, true);
-              if (!firstResultFound) {
-                set({ loading: false }); // Stop loading indicator on first result
-                firstResultFound = true;
-              }
-            }
-          } catch (error) {
-            console.info(`Failed to fetch from ${resource.name}:`, error);
+          console.info(`[PERF] Enabled resources: ${enabledResources.length}/${allResources.length}`);
+          
+          if (enabledResources.length === 0) {
+            console.error(`[ERROR] No enabled resources available for search`);
+            set({ 
+              error: "没有可用的视频源，请检查设置或联系管理员",
+              loading: false 
+            });
+            return;
           }
-        });
 
-        await Promise.all(searchPromises);
+          let firstResultFound = false;
+          let totalResults = 0;
+          const searchPromises = enabledResources.map(async (resource) => {
+            try {
+              const searchStart = performance.now();
+              const { results } = await api.searchVideo(q, resource.key, signal);
+              const searchEnd = performance.now();
+              console.info(`[PERF] API searchVideo (${resource.name}) took ${(searchEnd - searchStart).toFixed(2)}ms, results: ${results.length}`);
+              
+              if (results.length > 0) {
+                totalResults += results.length;
+                console.info(`[SUCCESS] Source "${resource.name}" found ${results.length} results for "${q}"`);
+                await processAndSetResults(results, true);
+                if (!firstResultFound) {
+                  set({ loading: false }); // Stop loading indicator on first result
+                  firstResultFound = true;
+                  console.info(`[SUCCESS] First result found from "${resource.name}", stopping loading indicator`);
+                }
+              } else {
+                console.warn(`[WARN] Source "${resource.name}" returned 0 results for "${q}"`);
+              }
+            } catch (error) {
+              console.error(`[ERROR] Failed to fetch from ${resource.name}:`, error);
+            }
+          });
+
+          await Promise.all(searchPromises);
+          
+          // 检查是否找到任何结果
+          if (totalResults === 0) {
+            console.error(`[ERROR] All sources returned 0 results for "${q}"`);
+            set({ 
+              error: `未找到 "${q}" 的播放源，请尝试其他关键词或稍后重试`,
+              loading: false 
+            });
+          } else {
+            console.info(`[SUCCESS] Standard search completed, total results: ${totalResults}`);
+          }
+        } catch (resourceError) {
+          console.error(`[ERROR] Failed to get resources:`, resourceError);
+          set({ 
+            error: `获取视频源失败：${resourceError instanceof Error ? resourceError.message : '网络错误，请稍后重试'}`,
+            loading: false 
+          });
+          return;
+        }
       }
 
-      if (get().searchResults.length === 0) {
-        set({ error: "未找到任何播放源" });
+      const favoriteCheckStart = performance.now();
+      const finalState = get();
+      
+      // 最终检查：如果所有搜索都完成但仍然没有结果
+      if (finalState.searchResults.length === 0 && !finalState.error) {
+        console.error(`[ERROR] All search attempts completed but no results found for "${q}"`);
+        set({ error: `未找到 "${q}" 的播放源，请检查标题拼写或稍后重试` });
+      } else if (finalState.searchResults.length > 0) {
+        console.info(`[SUCCESS] DetailStore.init completed successfully with ${finalState.searchResults.length} sources`);
       }
 
-      if (get().detail) {
-        const { source, id } = get().detail!;
-        const isFavorited = await FavoriteManager.isFavorited(source, id.toString());
-        set({ isFavorited });
+      if (finalState.detail) {
+        const { source, id } = finalState.detail;
+        console.info(`[INFO] Checking favorite status for source: ${source}, id: ${id}`);
+        try {
+          const isFavorited = await FavoriteManager.isFavorited(source, id.toString());
+          set({ isFavorited });
+          console.info(`[INFO] Favorite status: ${isFavorited}`);
+        } catch (favoriteError) {
+          console.warn(`[WARN] Failed to check favorite status:`, favoriteError);
+        }
+      } else {
+        console.warn(`[WARN] No detail found after all search attempts for "${q}"`);
       }
+      
+      const favoriteCheckEnd = performance.now();
+      console.info(`[PERF] Favorite check took ${(favoriteCheckEnd - favoriteCheckStart).toFixed(2)}ms`);
+      
     } catch (e) {
       if ((e as Error).name !== "AbortError") {
-        set({ error: e instanceof Error ? e.message : "获取数据失败" });
+        console.error(`[ERROR] DetailStore.init caught unexpected error:`, e);
+        const errorMessage = e instanceof Error ? e.message : "获取数据失败";
+        set({ error: `搜索失败：${errorMessage}` });
+      } else {
+        console.info(`[INFO] DetailStore.init aborted by user`);
       }
     } finally {
       if (!signal.aborted) {
         set({ loading: false, allSourcesLoaded: true });
+        console.info(`[INFO] DetailStore.init cleanup completed`);
       }
+      
+      const perfEnd = performance.now();
+      console.info(`[PERF] DetailStore.init COMPLETE - total time: ${(perfEnd - perfStart).toFixed(2)}ms`);
     }
   },
 
@@ -178,6 +340,64 @@ const useDetailStore = create<DetailState>((set, get) => ({
     const newIsFavorited = await FavoriteManager.toggle(source, id.toString(), favoriteItem);
     set({ isFavorited: newIsFavorited });
   },
+
+  markSourceAsFailed: (source: string, reason: string) => {
+    const { failedSources } = get();
+    const newFailedSources = new Set(failedSources);
+    newFailedSources.add(source);
+    
+    console.warn(`[SOURCE_FAILED] Marking source "${source}" as failed due to: ${reason}`);
+    console.info(`[SOURCE_FAILED] Total failed sources: ${newFailedSources.size}`);
+    
+    set({ failedSources: newFailedSources });
+  },
+
+  getNextAvailableSource: (currentSource: string, episodeIndex: number) => {
+    const { searchResults, failedSources } = get();
+    
+    console.info(`[SOURCE_SELECTION] Looking for alternative to "${currentSource}" for episode ${episodeIndex + 1}`);
+    console.info(`[SOURCE_SELECTION] Failed sources: [${Array.from(failedSources).join(', ')}]`);
+    
+    // 过滤掉当前source和已失败的sources
+    const availableSources = searchResults.filter(result => 
+      result.source !== currentSource && 
+      !failedSources.has(result.source) &&
+      result.episodes && 
+      result.episodes.length > episodeIndex
+    );
+    
+    console.info(`[SOURCE_SELECTION] Available sources: ${availableSources.length}`);
+    availableSources.forEach(source => {
+      console.info(`[SOURCE_SELECTION] - ${source.source} (${source.source_name}): ${source.episodes?.length || 0} episodes`);
+    });
+    
+    if (availableSources.length === 0) {
+      console.error(`[SOURCE_SELECTION] No available sources for episode ${episodeIndex + 1}`);
+      return null;
+    }
+    
+    // 优先选择有高分辨率的source
+    const sortedSources = availableSources.sort((a, b) => {
+      const aResolution = a.resolution || '';
+      const bResolution = b.resolution || '';
+      
+      // 优先级: 1080p > 720p > 其他 > 无分辨率
+      const resolutionPriority = (res: string) => {
+        if (res.includes('1080')) return 4;
+        if (res.includes('720')) return 3;
+        if (res.includes('480')) return 2;
+        if (res.includes('360')) return 1;
+        return 0;
+      };
+      
+      return resolutionPriority(bResolution) - resolutionPriority(aResolution);
+    });
+    
+    const selectedSource = sortedSources[0];
+    console.info(`[SOURCE_SELECTION] Selected fallback source: ${selectedSource.source} (${selectedSource.source_name}) with resolution: ${selectedSource.resolution || 'unknown'}`);
+    
+    return selectedSource;
+  },
 }));
 
 export const sourcesSelector = (state: DetailState) => state.sources;
diff --git a/stores/playerStore.ts b/stores/playerStore.ts
index c60d93e..fe2f282 100644
--- a/stores/playerStore.ts
+++ b/stores/playerStore.ts
@@ -54,6 +54,7 @@ interface PlayerState {
   _isRecordSaveThrottled: boolean;
   // Internal helper
   _savePlayRecord: (updates?: Partial<PlayRecord>, options?: { immediate?: boolean }) => void;
+  handleVideoError: (errorType: 'ssl' | 'network' | 'other', failedUrl: string) => Promise<void>;
 }
 
 const usePlayerStore = create<PlayerState>((set, get) => ({
@@ -80,44 +81,156 @@ const usePlayerStore = create<PlayerState>((set, get) => ({
   setVideoRef: (ref) => set({ videoRef: ref }),
 
   loadVideo: async ({ source, id, episodeIndex, position, title }) => {
+    const perfStart = performance.now();
+    console.info(`[PERF] PlayerStore.loadVideo START - source: ${source}, id: ${id}, title: ${title}`);
+    
     let detail = useDetailStore.getState().detail;
-    let episodes = episodesSelectorBySource(source)(useDetailStore.getState());
+    let episodes: string[] = [];
+    
+    // 如果有detail，使用detail的source获取episodes；否则使用传入的source
+    if (detail && detail.source) {
+      console.info(`[INFO] Using existing detail source "${detail.source}" to get episodes`);
+      episodes = episodesSelectorBySource(detail.source)(useDetailStore.getState());
+    } else {
+      console.info(`[INFO] No existing detail, using provided source "${source}" to get episodes`);
+      episodes = episodesSelectorBySource(source)(useDetailStore.getState());
+    }
 
     set({
       isLoading: true,
     });
 
-    if (!detail || !episodes || episodes.length === 0 || detail.title !== title) {
+    const needsDetailInit = !detail || !episodes || episodes.length === 0 || detail.title !== title;
+    console.info(`[PERF] Detail check - needsInit: ${needsDetailInit}, hasDetail: ${!!detail}, episodesCount: ${episodes?.length || 0}`);
+
+    if (needsDetailInit) {
+      const detailInitStart = performance.now();
+      console.info(`[PERF] DetailStore.init START - ${title}`);
+      
       await useDetailStore.getState().init(title, source, id);
+      
+      const detailInitEnd = performance.now();
+      console.info(`[PERF] DetailStore.init END - took ${(detailInitEnd - detailInitStart).toFixed(2)}ms`);
+      
       detail = useDetailStore.getState().detail;
-      episodes = episodesSelectorBySource(source)(useDetailStore.getState());
+      
       if (!detail) {
-        console.info("Detail not found after initialization");
+        console.error(`[ERROR] Detail not found after initialization for "${title}" (source: ${source}, id: ${id})`);
+        
+        // 检查DetailStore的错误状态
+        const detailStoreState = useDetailStore.getState();
+        if (detailStoreState.error) {
+          console.error(`[ERROR] DetailStore error: ${detailStoreState.error}`);
+          set({ 
+            isLoading: false,
+            // 可以选择在这里设置一个错误状态，但playerStore可能没有error字段
+          });
+        } else {
+          console.error(`[ERROR] DetailStore init completed but no detail found and no error reported`);
+          set({ isLoading: false });
+        }
         return;
       }
+      
+      // 使用DetailStore找到的实际source来获取episodes，而不是原始的preferredSource
+      console.info(`[INFO] Using actual source "${detail.source}" instead of preferred source "${source}"`);
+      episodes = episodesSelectorBySource(detail.source)(useDetailStore.getState());
+      
+      if (!episodes || episodes.length === 0) {
+        console.error(`[ERROR] No episodes found for "${title}" from source "${detail.source}" (${detail.source_name})`);
+        
+        // 尝试从searchResults中直接获取episodes
+        const detailStoreState = useDetailStore.getState();
+        console.info(`[INFO] Available sources in searchResults: ${detailStoreState.searchResults.map(r => `${r.source}(${r.episodes?.length || 0} episodes)`).join(', ')}`);
+        
+        // 如果当前source没有episodes，尝试使用第一个有episodes的source
+        const sourceWithEpisodes = detailStoreState.searchResults.find(r => r.episodes && r.episodes.length > 0);
+        if (sourceWithEpisodes) {
+          console.info(`[FALLBACK] Using alternative source "${sourceWithEpisodes.source}" with ${sourceWithEpisodes.episodes.length} episodes`);
+          episodes = sourceWithEpisodes.episodes;
+          // 更新detail为有episodes的source
+          detail = sourceWithEpisodes;
+        } else {
+          console.error(`[ERROR] No source with episodes found in searchResults`);
+          set({ isLoading: false });
+          return;
+        }
+      }
+      
+      console.info(`[SUCCESS] Detail and episodes loaded - source: ${detail.source_name}, episodes: ${episodes.length}`);
+    } else {
+      console.info(`[PERF] Skipping DetailStore.init - using cached data`);
+      
+      // 即使是缓存的数据，也要确保使用正确的source获取episodes
+      if (detail && detail.source && detail.source !== source) {
+        console.info(`[INFO] Cached detail source "${detail.source}" differs from provided source "${source}", updating episodes`);
+        episodes = episodesSelectorBySource(detail.source)(useDetailStore.getState());
+        
+        if (!episodes || episodes.length === 0) {
+          console.warn(`[WARN] Cached detail source "${detail.source}" has no episodes, trying provided source "${source}"`);
+          episodes = episodesSelectorBySource(source)(useDetailStore.getState());
+        }
+      }
     }
 
+    // 最终验证：确保我们有有效的detail和episodes数据
+    if (!detail) {
+      console.error(`[ERROR] Final check failed: detail is null`);
+      set({ isLoading: false });
+      return;
+    }
+    
+    if (!episodes || episodes.length === 0) {
+      console.error(`[ERROR] Final check failed: no episodes available for source "${detail.source}" (${detail.source_name})`);
+      set({ isLoading: false });
+      return;
+    }
+    
+    console.info(`[SUCCESS] Final validation passed - detail: ${detail.source_name}, episodes: ${episodes.length}`);
+
     try {
-      const playRecord = await PlayRecordManager.get(detail.source, detail.id.toString());
-      const playerSettings = await PlayerSettingsManager.get(detail.source, detail.id.toString());
+      const storageStart = performance.now();
+      console.info(`[PERF] Storage operations START`);
+      
+      const playRecord = await PlayRecordManager.get(detail!.source, detail!.id.toString());
+      const storagePlayRecordEnd = performance.now();
+      console.info(`[PERF] PlayRecordManager.get took ${(storagePlayRecordEnd - storageStart).toFixed(2)}ms`);
+      
+      const playerSettings = await PlayerSettingsManager.get(detail!.source, detail!.id.toString());
+      const storageEnd = performance.now();
+      console.info(`[PERF] PlayerSettingsManager.get took ${(storageEnd - storagePlayRecordEnd).toFixed(2)}ms`);
+      console.info(`[PERF] Total storage operations took ${(storageEnd - storageStart).toFixed(2)}ms`);
+      
       const initialPositionFromRecord = playRecord?.play_time ? playRecord.play_time * 1000 : 0;
       const savedPlaybackRate = playerSettings?.playbackRate || 1.0;
       
+      const episodesMappingStart = performance.now();
+      const mappedEpisodes = episodes.map((ep, index) => ({
+        url: ep,
+        title: `第 ${index + 1} 集`,
+      }));
+      const episodesMappingEnd = performance.now();
+      console.info(`[PERF] Episodes mapping (${episodes.length} episodes) took ${(episodesMappingEnd - episodesMappingStart).toFixed(2)}ms`);
+      
       set({
         isLoading: false,
         currentEpisodeIndex: episodeIndex,
         initialPosition: position || initialPositionFromRecord,
         playbackRate: savedPlaybackRate,
-        episodes: episodes.map((ep, index) => ({
-          url: ep,
-          title: `第 ${index + 1} 集`,
-        })),
+        episodes: mappedEpisodes,
         introEndTime: playRecord?.introEndTime || playerSettings?.introEndTime,
         outroStartTime: playRecord?.outroStartTime || playerSettings?.outroStartTime,
       });
+      
+      const perfEnd = performance.now();
+      console.info(`[PERF] PlayerStore.loadVideo COMPLETE - total time: ${(perfEnd - perfStart).toFixed(2)}ms`);
+      
     } catch (error) {
       console.info("Failed to load play record", error);
       set({ isLoading: false });
+      
+      const perfEnd = performance.now();
+      console.info(`[PERF] PlayerStore.loadVideo ERROR - total time: ${(perfEnd - perfStart).toFixed(2)}ms`);
     }
   },
 
@@ -352,12 +465,105 @@ const usePlayerStore = create<PlayerState>((set, get) => ({
       outroStartTime: undefined,
     });
   },
+
+  handleVideoError: async (errorType: 'ssl' | 'network' | 'other', failedUrl: string) => {
+    const perfStart = performance.now();
+    console.error(`[VIDEO_ERROR] Handling ${errorType} error for URL: ${failedUrl}`);
+    
+    const detailStoreState = useDetailStore.getState();
+    const { detail } = detailStoreState;
+    const { currentEpisodeIndex } = get();
+    
+    if (!detail) {
+      console.error(`[VIDEO_ERROR] Cannot fallback - no detail available`);
+      set({ isLoading: false });
+      return;
+    }
+    
+    // 标记当前source为失败
+    const currentSource = detail.source;
+    const errorReason = `${errorType} error: ${failedUrl.substring(0, 100)}...`;
+    useDetailStore.getState().markSourceAsFailed(currentSource, errorReason);
+    
+    // 获取下一个可用的source
+    const fallbackSource = useDetailStore.getState().getNextAvailableSource(currentSource, currentEpisodeIndex);
+    
+    if (!fallbackSource) {
+      console.error(`[VIDEO_ERROR] No fallback sources available for episode ${currentEpisodeIndex + 1}`);
+      Toast.show({ 
+        type: "error", 
+        text1: "播放失败", 
+        text2: "所有播放源都不可用，请稍后重试" 
+      });
+      set({ isLoading: false });
+      return;
+    }
+    
+    console.info(`[VIDEO_ERROR] Switching to fallback source: ${fallbackSource.source} (${fallbackSource.source_name})`);
+    
+    try {
+      // 更新DetailStore的当前detail为fallback source
+      await useDetailStore.getState().setDetail(fallbackSource);
+      
+      // 重新加载当前集数的episodes
+      const newEpisodes = fallbackSource.episodes || [];
+      if (newEpisodes.length > currentEpisodeIndex) {
+        const mappedEpisodes = newEpisodes.map((ep, index) => ({
+          url: ep,
+          title: `第 ${index + 1} 集`,
+        }));
+        
+        set({
+          episodes: mappedEpisodes,
+          isLoading: false, // 让Video组件重新渲染
+        });
+        
+        const perfEnd = performance.now();
+        console.info(`[VIDEO_ERROR] Successfully switched to fallback source in ${(perfEnd - perfStart).toFixed(2)}ms`);
+        console.info(`[VIDEO_ERROR] New episode URL: ${newEpisodes[currentEpisodeIndex].substring(0, 100)}...`);
+        
+        Toast.show({ 
+          type: "success", 
+          text1: "已切换播放源", 
+          text2: `正在使用 ${fallbackSource.source_name}` 
+        });
+      } else {
+        console.error(`[VIDEO_ERROR] Fallback source doesn't have episode ${currentEpisodeIndex + 1}`);
+        set({ isLoading: false });
+      }
+    } catch (error) {
+      console.error(`[VIDEO_ERROR] Failed to switch to fallback source:`, error);
+      set({ isLoading: false });
+    }
+  },
 }));
 
 export default usePlayerStore;
 
 export const selectCurrentEpisode = (state: PlayerState) => {
-  if (state.episodes.length > state.currentEpisodeIndex) {
-    return state.episodes[state.currentEpisodeIndex];
+  // 增强数据安全性检查
+  if (
+    state.episodes &&
+    Array.isArray(state.episodes) &&
+    state.episodes.length > 0 &&
+    state.currentEpisodeIndex >= 0 &&
+    state.currentEpisodeIndex < state.episodes.length
+  ) {
+    const episode = state.episodes[state.currentEpisodeIndex];
+    // 确保episode有有效的URL
+    if (episode && episode.url && episode.url.trim() !== "") {
+      return episode;
+    } else {
+      // 仅在调试模式下打印
+      if (__DEV__) {
+        console.info(`[PERF] selectCurrentEpisode - episode found but invalid URL: ${episode?.url}`);
+      }
+    }
+  } else {
+    // 仅在调试模式下打印
+    if (__DEV__) {
+      console.info(`[PERF] selectCurrentEpisode - no valid episode: episodes.length=${state.episodes?.length}, currentIndex=${state.currentEpisodeIndex}`);
+    }
   }
+  return undefined;
 };