diff --git a/components/NativeVideoPlayer.tsx b/components/NativeVideoPlayer.tsx
index 7841c2a..d9890c1 100644
--- a/components/NativeVideoPlayer.tsx
+++ b/components/NativeVideoPlayer.tsx
@@ -407,6 +407,14 @@ export const NativeVideoPlayer = forwardRef<NativeVideoPlayerRef, Props>(
                 videoRef.current?.seek(initialTime);
               }
             }}
+            onError={(e) => {
+              // 杜比视界播放失败时自动降级到 1080P
+              if (currentQn === 126) {
+                onQualityChange(80);
+                return;
+              }
+              console.warn('Video playback error:', e);
+            }}
           />
         ) : (
           <View style={styles.placeholder} />
@@ -572,7 +580,7 @@ export const NativeVideoPlayer = forwardRef<NativeVideoPlayerRef, Props>(
                       q.qn === currentQn && styles.qualityItemActive,
                     ]}
                   >
-                    {q.desc}
+                    {q.desc}{q.qn === 126 ? ' DV' : ''}
                   </Text>
                   {q.qn === currentQn && (
                     <Ionicons name="checkmark" size={16} color="#00AEEC" />
diff --git a/hooks/useVideoDetail.ts b/hooks/useVideoDetail.ts
index 36ec4ec..7bf0386 100644
--- a/hooks/useVideoDetail.ts
+++ b/hooks/useVideoDetail.ts
@@ -39,7 +39,7 @@ export function useVideoDetail(bvid: string) {
         setVideo(detail);
         const cid = detail.pages?.[0]?.cid ?? detail.cid as number;
         cidRef.current = cid;
-        await fetchPlayData(cid, 120, true);
+        await fetchPlayData(cid, 126, true);
       } catch (e: any) {
         setError(e.message ?? 'Load failed');
       } finally {
@@ -52,7 +52,7 @@ export function useVideoDetail(bvid: string) {
   // 登录状态变化时重新拉取清晰度列表（登录后可能获得更高画质）
   useEffect(() => {
     if (cidRef.current) {
-      fetchPlayData(cidRef.current, 120, true).catch((e) => {
+      fetchPlayData(cidRef.current, 126, true).catch((e) => {
         console.warn('Failed to refresh quality list after login change:', e);
       });
     }
diff --git a/services/bilibili.ts b/services/bilibili.ts
index 489031b..f16f139 100644
--- a/services/bilibili.ts
+++ b/services/bilibili.ts
@@ -116,8 +116,10 @@ export async function getVideoDetail(bvid: string): Promise<VideoItem> {
 
 export async function getPlayUrl(bvid: string, cid: number, qn = 64): Promise<PlayUrlResponse> {
   const isAndroid = Platform.OS === 'android';
+  // 1488 = 16(DASH)|64(HDR)|128(4K)|256(杜比全景声)|1024(杜比视界)
+  const FNVAL_ANDROID = 16 | 64 | 128 | 256 | 1024;
   const params = isAndroid
-    ? { bvid, cid, qn, fnval: 16, fourk: 1 }
+    ? { bvid, cid, qn, fnval: FNVAL_ANDROID, fourk: 1 }
     : { bvid, cid, qn, fnval: 0, platform: 'html5', fourk: 1 };
   const res = await api.get('/x/player/playurl', { params });
   return res.data.data as PlayUrlResponse;
diff --git a/services/types.ts b/services/types.ts
index 1589e23..445b4df 100644
--- a/services/types.ts
+++ b/services/types.ts
@@ -69,6 +69,8 @@ export interface DashVideoItem {
   stat:any;
   frameRate: string;
   segment_base?: DashSegmentBase;
+  dolby_type?: number;  // 1=杜比视界
+  hdr_type?: number;    // 1=HDR
 }
 
 export interface DashAudioItem {
@@ -91,6 +93,10 @@ export interface PlayUrlResponse {
     video: DashVideoItem[];
     audio: DashAudioItem[];
   };
+  dolby?: {
+    type: number;          // 1=杜比全景声
+    audio?: DashAudioItem[];
+  };
   quality: number;
   accept_quality: number[];
   accept_description: string[];
diff --git a/utils/dash.ts b/utils/dash.ts
index a0940cc..a5243f8 100644
--- a/utils/dash.ts
+++ b/utils/dash.ts
@@ -1,5 +1,5 @@
 import * as FileSystem from 'expo-file-system/legacy';
-import type { PlayUrlResponse } from '../services/types';
+import type { PlayUrlResponse, DashAudioItem } from '../services/types';
 
 /**
  * 将 Bilibili DASH 响应写成 MPD 文件，返回 file:// URI 供 ExoPlayer 播放。
@@ -12,13 +12,20 @@ export async function buildDashMpdUri(playData: PlayUrlResponse, qn: number): Pr
   return path;
 }
 
+function isDolbyVision(codecs: string): boolean {
+  return /^(dvhe|dvh1)/.test(codecs);
+}
+
 function buildMpdXml(playData: PlayUrlResponse, qn: number): string {
   const dash = playData.dash!;
 
   const video = dash.video.find(v => v.id === qn) ?? dash.video[0];
-  const audio = dash.audio.reduce((best, a) =>
-    a.bandwidth > best.bandwidth ? a : best
-  );
+
+  // 优先使用杜比全景声音轨，回退到带宽最高的普通音轨
+  const dolbyAudios = playData.dolby?.audio;
+  const audio: DashAudioItem = (dolbyAudios && dolbyAudios.length > 0)
+    ? dolbyAudios.reduce((best, a) => a.bandwidth > best.bandwidth ? a : best)
+    : dash.audio.reduce((best, a) => a.bandwidth > best.bandwidth ? a : best);
 
   const dur = dash.duration;
   const vSeg = video.segment_base;
@@ -31,13 +38,18 @@ function buildMpdXml(playData: PlayUrlResponse, qn: number): string {
     ? `\n        <SegmentBase indexRange="${aSeg.index_range}"><Initialization range="${aSeg.initialization}"/></SegmentBase>`
     : '';
 
+  const isDV = isDolbyVision(video.codecs);
+  const dvProperty = isDV
+    ? `\n      <SupplementalProperty schemeIdUri="tag:dolby.com,2016:dash:dolby_vision_profile:2014" value="${video.codecs}"/>`
+    : '';
+
   return `<?xml version="1.0" encoding="UTF-8"?>
 <MPD xmlns="urn:mpeg:dash:schema:mpd:2011"
-     profiles="urn:mpeg:dash:profile:isoff-on-demand:2011"
+     profiles="urn:mpeg:dash:profile:isoff-on-demand:2011,http://dashif.org/guidelines/dash-if-simple"
      type="static"
      mediaPresentationDuration="PT${dur}S">
   <Period duration="PT${dur}S">
-    <AdaptationSet id="1" mimeType="${video.mimeType}" codecs="${video.codecs}" startWithSAP="1" subsegmentAlignment="true">
+    <AdaptationSet id="1" mimeType="${video.mimeType}" codecs="${video.codecs}" startWithSAP="1" subsegmentAlignment="true">${dvProperty}
       <Representation id="v1" bandwidth="${video.bandwidth}" width="${video.width}" height="${video.height}" frameRate="${video.frameRate}">
         <BaseURL>${escapeXml(video.baseUrl)}</BaseURL>${videoSegmentBase}
       </Representation>